* [Qemu-devel] [PULL 00/34] Block layer patches
@ 2016-02-22 16:32 Kevin Wolf
2016-02-22 16:32 ` [Qemu-devel] [PULL 01/34] qemu-img: initialize MapEntry object Kevin Wolf
` (34 more replies)
0 siblings, 35 replies; 36+ messages in thread
From: Kevin Wolf @ 2016-02-22 16:32 UTC (permalink / raw)
To: qemu-block; +Cc: kwolf, qemu-devel
The following changes since commit c3bce9d5f986bc22b0692a8fa9d26ce6d304375c:
etraxfs_dma: Dont forward zero-length payload to clients (2016-02-20 00:17:48 +0100)
are available in the git repository at:
git://repo.or.cz/qemu/kevin.git tags/for-upstream
for you to fetch changes up to fe243e4881bc9e09767dba05f15acb016cfa7a52:
Merge remote-tracking branch 'mreitz/tags/pull-block-for-kevin-2016-02-22' into queue-block (2016-02-22 16:57:50 +0100)
----------------------------------------------------------------
Block layer patches
----------------------------------------------------------------
Alberto Garcia (17):
throttle: Make throttle_compute_timer() static
throttle: Make throttle_conflicting() set errp
throttle: Make throttle_max_is_missing_limit() set errp
throttle: Make throttle_is_valid() set errp
throttle: Set always an average value when setting a maximum value
throttle: Merge all functions that check the configuration into one
throttle: Use throttle_config_init() to initialize ThrottleConfig
throttle: Add support for burst periods
throttle: Add command-line settings to define the burst periods
qapi: Add burst length parameters to block_set_io_throttle
qapi: Add burst length fields to BlockDeviceInfo
throttle: Check that burst_level leaks correctly
throttle: Test throttle_compute_wait() during bursts
qemu-iotests: Extend iotest 093 to test bursts
qapi: Correct the name of the iops_rd parameter
docs: Document the throttling infrastructure
MAINTAINERS: Add myself as maintainer of the throttling code
Alyssa Milburn (1):
blockdev: unset inappropriate flags when changing medium
Changlong Xie (1):
quorum: fix segfault when read fails in fifo mode
Daniel P. Berrange (8):
qemu-io: add support for --object command line arg
qemu-img: add support for --object command line arg
qemu-io: allow specifying image as a set of options args
qemu-nbd: allow specifying image as a set of options args
qemu-img: allow specifying image as a set of options args
qemu-nbd: don't overlap long option values with short options
qemu-nbd: use no_argument/required_argument constants
qemu-io: use no_argument/required_argument constants
John Snow (1):
qemu-img: initialize MapEntry object
Kevin Wolf (3):
block: Fix -incoming with snapshot=on
block migration: Activate image on destination before writing to it
Merge remote-tracking branch 'mreitz/tags/pull-block-for-kevin-2016-02-22' into queue-block
Sascha Silbe (3):
qemu-iotests: 067: ignore QMP events
qemu-iotests: 140: don't use IDE device
qemu-iotests: 140: make description slightly more verbose
Vladimir Sementsov-Ogievskiy (1):
spec: add qcow2 bitmaps extension specification
MAINTAINERS | 9 +
block.c | 4 -
block/qapi.c | 20 ++
block/quorum.c | 3 +-
blockdev.c | 109 +++++++---
docs/specs/qcow2.txt | 221 +++++++++++++++++++-
docs/throttle.txt | 252 +++++++++++++++++++++++
hmp.c | 12 ++
include/qemu/throttle.h | 55 +++--
migration/block.c | 7 +
qapi/block-core.json | 92 +++++++--
qemu-img-cmds.hx | 44 ++--
qemu-img.c | 491 +++++++++++++++++++++++++++++++++++++++------
qemu-img.texi | 14 ++
qemu-io.c | 115 +++++++++--
qemu-nbd.c | 104 ++++++----
qemu-nbd.texi | 7 +-
qmp-commands.hx | 25 ++-
tests/qemu-iotests/067 | 11 +-
tests/qemu-iotests/067.out | 144 -------------
tests/qemu-iotests/093 | 65 ++++--
tests/qemu-iotests/093.out | 4 +-
tests/qemu-iotests/140 | 8 +-
tests/qemu-iotests/140.out | 1 -
tests/qemu-iotests/145 | 52 +++++
tests/qemu-iotests/145.out | 5 +
tests/qemu-iotests/group | 1 +
tests/test-throttle.c | 88 ++++++--
util/throttle.c | 132 ++++++++----
29 files changed, 1663 insertions(+), 432 deletions(-)
create mode 100644 docs/throttle.txt
create mode 100755 tests/qemu-iotests/145
create mode 100644 tests/qemu-iotests/145.out
^ permalink raw reply [flat|nested] 36+ messages in thread
* [Qemu-devel] [PULL 01/34] qemu-img: initialize MapEntry object
2016-02-22 16:32 [Qemu-devel] [PULL 00/34] Block layer patches Kevin Wolf
@ 2016-02-22 16:32 ` Kevin Wolf
2016-02-22 16:32 ` [Qemu-devel] [PULL 02/34] quorum: fix segfault when read fails in fifo mode Kevin Wolf
` (33 subsequent siblings)
34 siblings, 0 replies; 36+ messages in thread
From: Kevin Wolf @ 2016-02-22 16:32 UTC (permalink / raw)
To: qemu-block; +Cc: kwolf, qemu-devel
From: John Snow <jsnow@redhat.com>
Commit 16b0d555 introduced an issue where we are not initializing
has_filename for the 'next' MapEntry object, which leads to interesting
errors in both Valgrind and Clang -fsanitize=undefined.
Zero the stack object at allocation AND make sure the utility to
populate the fields properly marks has_filename as false if applicable.
Signed-off-by: John Snow <jsnow@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
---
qemu-img.c | 26 +++++++++++++++-----------
1 file changed, 15 insertions(+), 11 deletions(-)
diff --git a/qemu-img.c b/qemu-img.c
index 7030107..fb9ab1f 100644
--- a/qemu-img.c
+++ b/qemu-img.c
@@ -2194,6 +2194,7 @@ static int get_block_status(BlockDriverState *bs, int64_t sector_num,
int64_t ret;
int depth;
BlockDriverState *file;
+ bool has_offset;
/* As an optimization, we could cache the current range of unallocated
* clusters in each file of the chain, and avoid querying the same
@@ -2220,17 +2221,20 @@ static int get_block_status(BlockDriverState *bs, int64_t sector_num,
depth++;
}
- e->start = sector_num * BDRV_SECTOR_SIZE;
- e->length = nb_sectors * BDRV_SECTOR_SIZE;
- e->data = !!(ret & BDRV_BLOCK_DATA);
- e->zero = !!(ret & BDRV_BLOCK_ZERO);
- e->offset = ret & BDRV_BLOCK_OFFSET_MASK;
- e->has_offset = !!(ret & BDRV_BLOCK_OFFSET_VALID);
- e->depth = depth;
- if (file && e->has_offset) {
- e->has_filename = true;
- e->filename = file->filename;
- }
+ has_offset = !!(ret & BDRV_BLOCK_OFFSET_VALID);
+
+ *e = (MapEntry) {
+ .start = sector_num * BDRV_SECTOR_SIZE,
+ .length = nb_sectors * BDRV_SECTOR_SIZE,
+ .data = !!(ret & BDRV_BLOCK_DATA),
+ .zero = !!(ret & BDRV_BLOCK_ZERO),
+ .offset = ret & BDRV_BLOCK_OFFSET_MASK,
+ .has_offset = has_offset,
+ .depth = depth,
+ .has_filename = file && has_offset,
+ .filename = file && has_offset ? file->filename : NULL,
+ };
+
return 0;
}
--
1.8.3.1
^ permalink raw reply related [flat|nested] 36+ messages in thread
* [Qemu-devel] [PULL 02/34] quorum: fix segfault when read fails in fifo mode
2016-02-22 16:32 [Qemu-devel] [PULL 00/34] Block layer patches Kevin Wolf
2016-02-22 16:32 ` [Qemu-devel] [PULL 01/34] qemu-img: initialize MapEntry object Kevin Wolf
@ 2016-02-22 16:32 ` Kevin Wolf
2016-02-22 16:32 ` [Qemu-devel] [PULL 03/34] spec: add qcow2 bitmaps extension specification Kevin Wolf
` (32 subsequent siblings)
34 siblings, 0 replies; 36+ messages in thread
From: Kevin Wolf @ 2016-02-22 16:32 UTC (permalink / raw)
To: qemu-block; +Cc: kwolf, qemu-devel
From: Changlong Xie <xiecl.fnst@cn.fujitsu.com>
Signed-off-by: Wen Congyang <wency@cn.fujitsu.com>
Signed-off-by: Changlong Xie <xiecl.fnst@cn.fujitsu.com>
Reviewed-by: Alberto Garcia <berto@igalia.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
---
block/quorum.c | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)
diff --git a/block/quorum.c b/block/quorum.c
index a5ae4b8..11cc60b 100644
--- a/block/quorum.c
+++ b/block/quorum.c
@@ -286,7 +286,8 @@ static void quorum_aio_cb(void *opaque, int ret)
if (acb->is_read && s->read_pattern == QUORUM_READ_PATTERN_FIFO) {
/* We try to read next child in FIFO order if we fail to read */
- if (ret < 0 && ++acb->child_iter < s->num_children) {
+ if (ret < 0 && (acb->child_iter + 1) < s->num_children) {
+ acb->child_iter++;
read_fifo_child(acb);
return;
}
--
1.8.3.1
^ permalink raw reply related [flat|nested] 36+ messages in thread
* [Qemu-devel] [PULL 03/34] spec: add qcow2 bitmaps extension specification
2016-02-22 16:32 [Qemu-devel] [PULL 00/34] Block layer patches Kevin Wolf
2016-02-22 16:32 ` [Qemu-devel] [PULL 01/34] qemu-img: initialize MapEntry object Kevin Wolf
2016-02-22 16:32 ` [Qemu-devel] [PULL 02/34] quorum: fix segfault when read fails in fifo mode Kevin Wolf
@ 2016-02-22 16:32 ` Kevin Wolf
2016-02-22 16:32 ` [Qemu-devel] [PULL 04/34] block: Fix -incoming with snapshot=on Kevin Wolf
` (31 subsequent siblings)
34 siblings, 0 replies; 36+ messages in thread
From: Kevin Wolf @ 2016-02-22 16:32 UTC (permalink / raw)
To: qemu-block; +Cc: kwolf, qemu-devel
From: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com>
The new feature for qcow2: storing bitmaps.
This patch adds new header extension to qcow2 - Bitmaps Extension. It
provides an ability to store virtual disk related bitmaps in a qcow2
image. For now there is only one type of such bitmaps: Dirty Tracking
Bitmap, which just tracks virtual disk changes from some moment.
Note: Only bitmaps, relative to the virtual disk, stored in qcow2 file,
should be stored in this qcow2 file. The size of each bitmap
(considering its granularity) is equal to virtual disk size.
Signed-off-by: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com>
Reviewed-by: Max Reitz <mreitz@redhat.com>
Reviewed-by: John Snow <jsnow@redhat.com>
Reviewed-by: Fam Zheng <famz@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
---
docs/specs/qcow2.txt | 221 ++++++++++++++++++++++++++++++++++++++++++++++++++-
1 file changed, 220 insertions(+), 1 deletion(-)
diff --git a/docs/specs/qcow2.txt b/docs/specs/qcow2.txt
index f236d8c..80cdfd0 100644
--- a/docs/specs/qcow2.txt
+++ b/docs/specs/qcow2.txt
@@ -103,7 +103,18 @@ in the description of a field.
write to an image with unknown auto-clear features if it
clears the respective bits from this field first.
- Bits 0-63: Reserved (set to 0)
+ Bit 0: Bitmaps extension bit
+ This bit indicates consistency for the bitmaps
+ extension data.
+
+ It is an error if this bit is set without the
+ bitmaps extension present.
+
+ If the bitmaps extension is present but this
+ bit is unset, the bitmaps extension data must be
+ considered inconsistent.
+
+ Bits 1-63: Reserved (set to 0)
96 - 99: refcount_order
Describes the width of a reference count block entry (width
@@ -123,6 +134,7 @@ be stored. Each extension has a structure like the following:
0x00000000 - End of the header extension area
0xE2792ACA - Backing file format name
0x6803f857 - Feature name table
+ 0x23852875 - Bitmaps extension
other - Unknown header extension, can be safely
ignored
@@ -166,6 +178,36 @@ the header extension data. Each entry look like this:
terminated if it has full length)
+== Bitmaps extension ==
+
+The bitmaps extension is an optional header extension. It provides the ability
+to store bitmaps related to a virtual disk. For now, there is only one bitmap
+type: the dirty tracking bitmap, which tracks virtual disk changes from some
+point in time.
+
+The data of the extension should be considered consistent only if the
+corresponding auto-clear feature bit is set, see autoclear_features above.
+
+The fields of the bitmaps extension are:
+
+ Byte 0 - 3: nb_bitmaps
+ The number of bitmaps contained in the image. Must be
+ greater than or equal to 1.
+
+ Note: Qemu currently only supports up to 65535 bitmaps per
+ image.
+
+ 4 - 7: Reserved, must be zero.
+
+ 8 - 15: bitmap_directory_size
+ Size of the bitmap directory in bytes. It is the cumulative
+ size of all (nb_bitmaps) bitmap headers.
+
+ 16 - 23: bitmap_directory_offset
+ Offset into the image file at which the bitmap directory
+ starts. Must be aligned to a cluster boundary.
+
+
== Host cluster management ==
qcow2 manages the allocation of host clusters by maintaining a reference count
@@ -360,3 +402,180 @@ Snapshot table entry:
variable: Padding to round up the snapshot table entry size to the
next multiple of 8.
+
+
+== Bitmaps ==
+
+As mentioned above, the bitmaps extension provides the ability to store bitmaps
+related to a virtual disk. This section describes how these bitmaps are stored.
+
+All stored bitmaps are related to the virtual disk stored in the same image, so
+each bitmap size is equal to the virtual disk size.
+
+Each bit of the bitmap is responsible for strictly defined range of the virtual
+disk. For bit number bit_nr the corresponding range (in bytes) will be:
+
+ [bit_nr * bitmap_granularity .. (bit_nr + 1) * bitmap_granularity - 1]
+
+Granularity is a property of the concrete bitmap, see below.
+
+
+=== Bitmap directory ===
+
+Each bitmap saved in the image is described in a bitmap directory entry. The
+bitmap directory is a contiguous area in the image file, whose starting offset
+and length are given by the header extension fields bitmap_directory_offset and
+bitmap_directory_size. The entries of the bitmap directory have variable
+length, depending on the lengths of the bitmap name and extra data. These
+entries are also called bitmap headers.
+
+Structure of a bitmap directory entry:
+
+ Byte 0 - 7: bitmap_table_offset
+ Offset into the image file at which the bitmap table
+ (described below) for the bitmap starts. Must be aligned to
+ a cluster boundary.
+
+ 8 - 11: bitmap_table_size
+ Number of entries in the bitmap table of the bitmap.
+
+ 12 - 15: flags
+ Bit
+ 0: in_use
+ The bitmap was not saved correctly and may be
+ inconsistent.
+
+ 1: auto
+ The bitmap must reflect all changes of the virtual
+ disk by any application that would write to this qcow2
+ file (including writes, snapshot switching, etc.). The
+ type of this bitmap must be 'dirty tracking bitmap'.
+
+ 2: extra_data_compatible
+ This flags is meaningful when the extra data is
+ unknown to the software (currently any extra data is
+ unknown to Qemu).
+ If it is set, the bitmap may be used as expected, extra
+ data must be left as is.
+ If it is not set, the bitmap must not be used, but
+ both it and its extra data be left as is.
+
+ Bits 3 - 31 are reserved and must be 0.
+
+ 16: type
+ This field describes the sort of the bitmap.
+ Values:
+ 1: Dirty tracking bitmap
+
+ Values 0, 2 - 255 are reserved.
+
+ 17: granularity_bits
+ Granularity bits. Valid values: 0 - 63.
+
+ Note: Qemu currently doesn't support granularity_bits
+ greater than 31.
+
+ Granularity is calculated as
+ granularity = 1 << granularity_bits
+
+ A bitmap's granularity is how many bytes of the image
+ accounts for one bit of the bitmap.
+
+ 18 - 19: name_size
+ Size of the bitmap name. Must be non-zero.
+
+ Note: Qemu currently doesn't support values greater than
+ 1023.
+
+ 20 - 23: extra_data_size
+ Size of type-specific extra data.
+
+ For now, as no extra data is defined, extra_data_size is
+ reserved and should be zero. If it is non-zero the
+ behavior is defined by extra_data_compatible flag.
+
+ variable: extra_data
+ Extra data for the bitmap, occupying extra_data_size bytes.
+ Extra data must never contain references to clusters or in
+ some other way allocate additional clusters.
+
+ variable: name
+ The name of the bitmap (not null terminated), occupying
+ name_size bytes. Must be unique among all bitmap names
+ within the bitmaps extension.
+
+ variable: Padding to round up the bitmap directory entry size to the
+ next multiple of 8. All bytes of the padding must be zero.
+
+
+=== Bitmap table ===
+
+Each bitmap is stored using a one-level structure (as opposed to two-level
+structures like for refcounts and guest clusters mapping) for the mapping of
+bitmap data to host clusters. This structure is called the bitmap table.
+
+Each bitmap table has a variable size (stored in the bitmap directory entry)
+and may use multiple clusters, however, it must be contiguous in the image
+file.
+
+Structure of a bitmap table entry:
+
+ Bit 0: Reserved and must be zero if bits 9 - 55 are non-zero.
+ If bits 9 - 55 are zero:
+ 0: Cluster should be read as all zeros.
+ 1: Cluster should be read as all ones.
+
+ 1 - 8: Reserved and must be zero.
+
+ 9 - 55: Bits 9 - 55 of the host cluster offset. Must be aligned to
+ a cluster boundary. If the offset is 0, the cluster is
+ unallocated; in that case, bit 0 determines how this
+ cluster should be treated during reads.
+
+ 56 - 63: Reserved and must be zero.
+
+
+=== Bitmap data ===
+
+As noted above, bitmap data is stored in separate clusters, described by the
+bitmap table. Given an offset (in bytes) into the bitmap data, the offset into
+the image file can be obtained as follows:
+
+ image_offset(bitmap_data_offset) =
+ bitmap_table[bitmap_data_offset / cluster_size] +
+ (bitmap_data_offset % cluster_size)
+
+This offset is not defined if bits 9 - 55 of bitmap table entry are zero (see
+above).
+
+Given an offset byte_nr into the virtual disk and the bitmap's granularity, the
+bit offset into the image file to the corresponding bit of the bitmap can be
+calculated like this:
+
+ bit_offset(byte_nr) =
+ image_offset(byte_nr / granularity / 8) * 8 +
+ (byte_nr / granularity) % 8
+
+If the size of the bitmap data is not a multiple of the cluster size then the
+last cluster of the bitmap data contains some unused tail bits. These bits must
+be zero.
+
+
+=== Dirty tracking bitmaps ===
+
+Bitmaps with 'type' field equal to one are dirty tracking bitmaps.
+
+When the virtual disk is in use dirty tracking bitmap may be 'enabled' or
+'disabled'. While the bitmap is 'enabled', all writes to the virtual disk
+should be reflected in the bitmap. A set bit in the bitmap means that the
+corresponding range of the virtual disk (see above) was written to while the
+bitmap was 'enabled'. An unset bit means that this range was not written to.
+
+The software doesn't have to sync the bitmap in the image file with its
+representation in RAM after each write. Flag 'in_use' should be set while the
+bitmap is not synced.
+
+In the image file the 'enabled' state is reflected by the 'auto' flag. If this
+flag is set, the software must consider the bitmap as 'enabled' and start
+tracking virtual disk changes to this bitmap from the first write to the
+virtual disk. If this flag is not set then the bitmap is disabled.
--
1.8.3.1
^ permalink raw reply related [flat|nested] 36+ messages in thread
* [Qemu-devel] [PULL 04/34] block: Fix -incoming with snapshot=on
2016-02-22 16:32 [Qemu-devel] [PULL 00/34] Block layer patches Kevin Wolf
` (2 preceding siblings ...)
2016-02-22 16:32 ` [Qemu-devel] [PULL 03/34] spec: add qcow2 bitmaps extension specification Kevin Wolf
@ 2016-02-22 16:32 ` Kevin Wolf
2016-02-22 16:32 ` [Qemu-devel] [PULL 05/34] qemu-io: add support for --object command line arg Kevin Wolf
` (30 subsequent siblings)
34 siblings, 0 replies; 36+ messages in thread
From: Kevin Wolf @ 2016-02-22 16:32 UTC (permalink / raw)
To: qemu-block; +Cc: kwolf, qemu-devel
The BDRV_O_INACTIVE flag should only be set for images explicitly opened
by the user. snapshot=on needs to create a new qcow2 image and write
some metadata to it. This is not a problem because it can't come from
the source, so there's no reason to mark it as BDRV_O_INACTIVE, even
though it is opened while waiting for the migration to complete.
This fixes an assertion failure when -incoming and snapshot=on are
combined.
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
---
block.c | 4 ----
blockdev.c | 8 +++++++
tests/qemu-iotests/145 | 52 ++++++++++++++++++++++++++++++++++++++++++++++
tests/qemu-iotests/145.out | 5 +++++
tests/qemu-iotests/group | 1 +
5 files changed, 66 insertions(+), 4 deletions(-)
create mode 100755 tests/qemu-iotests/145
create mode 100644 tests/qemu-iotests/145.out
diff --git a/block.c b/block.c
index efc3c43..ba24b8e 100644
--- a/block.c
+++ b/block.c
@@ -1191,10 +1191,6 @@ static int bdrv_fill_options(QDict **options, const char *filename,
}
}
- if (runstate_check(RUN_STATE_INMIGRATE)) {
- *flags |= BDRV_O_INACTIVE;
- }
-
return 0;
}
diff --git a/blockdev.c b/blockdev.c
index 1f73478..ed97d8a 100644
--- a/blockdev.c
+++ b/blockdev.c
@@ -610,6 +610,10 @@ static BlockBackend *blockdev_init(const char *file, QDict *bs_opts,
qdict_put(bs_opts, BDRV_OPT_CACHE_NO_FLUSH, qstring_from_str("on"));
}
+ if (runstate_check(RUN_STATE_INMIGRATE)) {
+ bdrv_flags |= BDRV_O_INACTIVE;
+ }
+
blk = blk_new_open(qemu_opts_id(opts), file, NULL, bs_opts, bdrv_flags,
errp);
if (!blk) {
@@ -688,6 +692,10 @@ static BlockDriverState *bds_tree_init(QDict *bs_opts, Error **errp)
goto fail;
}
+ if (runstate_check(RUN_STATE_INMIGRATE)) {
+ bdrv_flags |= BDRV_O_INACTIVE;
+ }
+
bs = NULL;
ret = bdrv_open(&bs, NULL, NULL, bs_opts, bdrv_flags, errp);
if (ret < 0) {
diff --git a/tests/qemu-iotests/145 b/tests/qemu-iotests/145
new file mode 100755
index 0000000..7d8febb
--- /dev/null
+++ b/tests/qemu-iotests/145
@@ -0,0 +1,52 @@
+#!/bin/bash
+#
+# Test the combination of -incoming and snapshot=on
+#
+# Copyright (C) 2016 Red Hat, Inc.
+#
+# This program is free software; you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation; either version 2 of the License, or
+# (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program. If not, see <http://www.gnu.org/licenses/>.
+#
+
+# creator
+owner=kwolf@redhat.com
+
+seq=`basename $0`
+echo "QA output created by $seq"
+
+here=`pwd`
+tmp=/tmp/$$
+status=1 # failure is the default!
+
+_cleanup()
+{
+ _cleanup_test_img
+ true
+}
+trap "_cleanup; exit \$status" 0 1 2 3 15
+
+# get standard environment, filters and checks
+. ./common.rc
+. ./common.filter
+
+_supported_fmt generic
+_supported_proto generic
+_supported_os Linux
+
+_make_test_img 1M
+echo quit | $QEMU -nographic -hda "$TEST_IMG" -incoming 'exec:true' -snapshot -serial none -monitor stdio | _filter_qemu
+
+# success, all done
+echo "*** done"
+rm -f $seq.full
+status=0
diff --git a/tests/qemu-iotests/145.out b/tests/qemu-iotests/145.out
new file mode 100644
index 0000000..75b5c8a
--- /dev/null
+++ b/tests/qemu-iotests/145.out
@@ -0,0 +1,5 @@
+QA output created by 145
+Formatting 'TEST_DIR/t.IMGFMT', fmt=IMGFMT size=1048576
+QEMU X.Y.Z monitor - type 'help' for more information
+(qemu) q^[[K^[[Dqu^[[K^[[D^[[Dqui^[[K^[[D^[[D^[[Dquit^[[K
+*** done
diff --git a/tests/qemu-iotests/group b/tests/qemu-iotests/group
index 65df029..47fd40c 100644
--- a/tests/qemu-iotests/group
+++ b/tests/qemu-iotests/group
@@ -147,3 +147,4 @@
142 auto
143 auto quick
144 rw auto quick
+145 auto quick
--
1.8.3.1
^ permalink raw reply related [flat|nested] 36+ messages in thread
* [Qemu-devel] [PULL 05/34] qemu-io: add support for --object command line arg
2016-02-22 16:32 [Qemu-devel] [PULL 00/34] Block layer patches Kevin Wolf
` (3 preceding siblings ...)
2016-02-22 16:32 ` [Qemu-devel] [PULL 04/34] block: Fix -incoming with snapshot=on Kevin Wolf
@ 2016-02-22 16:32 ` Kevin Wolf
2016-02-22 16:32 ` [Qemu-devel] [PULL 06/34] qemu-img: " Kevin Wolf
` (29 subsequent siblings)
34 siblings, 0 replies; 36+ messages in thread
From: Kevin Wolf @ 2016-02-22 16:32 UTC (permalink / raw)
To: qemu-block; +Cc: kwolf, qemu-devel
From: "Daniel P. Berrange" <berrange@redhat.com>
Allow creation of user creatable object types with qemu-io
via a new --object command line arg. This will be used to supply
passwords and/or encryption keys to the various block driver
backends via the recently added 'secret' object type.
# printf letmein > mypasswd.txt
# qemu-io --object secret,id=sec0,file=mypasswd.txt \
...other args...
Reviewed-by: Eric Blake <eblake@redhat.com>
Signed-off-by: Daniel P. Berrange <berrange@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
---
qemu-io.c | 34 ++++++++++++++++++++++++++++++++++
1 file changed, 34 insertions(+)
diff --git a/qemu-io.c b/qemu-io.c
index 6c0c028..969c8bf 100644
--- a/qemu-io.c
+++ b/qemu-io.c
@@ -18,6 +18,7 @@
#include "qemu/config-file.h"
#include "qemu/readline.h"
#include "qapi/qmp/qstring.h"
+#include "qom/object_interfaces.h"
#include "sysemu/block-backend.h"
#include "block/block_int.h"
#include "trace/control.h"
@@ -200,6 +201,8 @@ static void usage(const char *name)
"Usage: %s [-h] [-V] [-rsnm] [-f FMT] [-c STRING] ... [file]\n"
"QEMU Disk exerciser\n"
"\n"
+" --object OBJECTDEF define an object such as 'secret' for\n"
+" passwords and/or encryption keys\n"
" -c, --cmd STRING execute command with its arguments\n"
" from the given string\n"
" -f, --format FMT specifies the block driver to use\n"
@@ -361,6 +364,20 @@ static void reenable_tty_echo(void)
qemu_set_tty_echo(STDIN_FILENO, true);
}
+enum {
+ OPTION_OBJECT = 256,
+};
+
+static QemuOptsList qemu_object_opts = {
+ .name = "object",
+ .implied_opt_name = "qom-type",
+ .head = QTAILQ_HEAD_INITIALIZER(qemu_object_opts.head),
+ .desc = {
+ { }
+ },
+};
+
+
int main(int argc, char **argv)
{
int readonly = 0;
@@ -379,6 +396,7 @@ int main(int argc, char **argv)
{ "discard", 1, NULL, 'd' },
{ "cache", 1, NULL, 't' },
{ "trace", 1, NULL, 'T' },
+ { "object", 1, NULL, OPTION_OBJECT },
{ NULL, 0, NULL, 0 }
};
int c;
@@ -395,6 +413,7 @@ int main(int argc, char **argv)
qemu_init_exec_dir(argv[0]);
module_call_init(MODULE_INIT_QOM);
+ qemu_add_opts(&qemu_object_opts);
bdrv_init();
while ((c = getopt_long(argc, argv, sopt, lopt, &opt_index)) != -1) {
@@ -446,6 +465,14 @@ int main(int argc, char **argv)
case 'h':
usage(progname);
exit(0);
+ case OPTION_OBJECT: {
+ QemuOpts *qopts = NULL;
+ qopts = qemu_opts_parse_noisily(&qemu_object_opts,
+ optarg, true);
+ if (!qopts) {
+ exit(1);
+ }
+ } break;
default:
usage(progname);
exit(1);
@@ -462,6 +489,13 @@ int main(int argc, char **argv)
exit(1);
}
+ if (qemu_opts_foreach(&qemu_object_opts,
+ user_creatable_add_opts_foreach,
+ NULL, &local_error)) {
+ error_report_err(local_error);
+ exit(1);
+ }
+
/* initialize commands */
qemuio_add_command(&quit_cmd);
qemuio_add_command(&open_cmd);
--
1.8.3.1
^ permalink raw reply related [flat|nested] 36+ messages in thread
* [Qemu-devel] [PULL 06/34] qemu-img: add support for --object command line arg
2016-02-22 16:32 [Qemu-devel] [PULL 00/34] Block layer patches Kevin Wolf
` (4 preceding siblings ...)
2016-02-22 16:32 ` [Qemu-devel] [PULL 05/34] qemu-io: add support for --object command line arg Kevin Wolf
@ 2016-02-22 16:32 ` Kevin Wolf
2016-02-22 16:32 ` [Qemu-devel] [PULL 07/34] qemu-io: allow specifying image as a set of options args Kevin Wolf
` (28 subsequent siblings)
34 siblings, 0 replies; 36+ messages in thread
From: Kevin Wolf @ 2016-02-22 16:32 UTC (permalink / raw)
To: qemu-block; +Cc: kwolf, qemu-devel
From: "Daniel P. Berrange" <berrange@redhat.com>
Allow creation of user creatable object types with qemu-img
via a new --object command line arg. This will be used to supply
passwords and/or encryption keys to the various block driver
backends via the recently added 'secret' object type.
# printf letmein > mypasswd.txt
# qemu-img info --object secret,id=sec0,file=mypasswd.txt \
...other info args...
Reviewed-by: Eric Blake <eblake@redhat.com>
Signed-off-by: Daniel P. Berrange <berrange@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
---
qemu-img-cmds.hx | 44 +++++-----
qemu-img.c | 260 +++++++++++++++++++++++++++++++++++++++++++++++++++++--
qemu-img.texi | 8 ++
3 files changed, 282 insertions(+), 30 deletions(-)
diff --git a/qemu-img-cmds.hx b/qemu-img-cmds.hx
index 9567774..0eaf307 100644
--- a/qemu-img-cmds.hx
+++ b/qemu-img-cmds.hx
@@ -10,68 +10,68 @@ STEXI
ETEXI
DEF("check", img_check,
- "check [-q] [-f fmt] [--output=ofmt] [-r [leaks | all]] [-T src_cache] filename")
+ "check [-q] [--object objectdef] [-f fmt] [--output=ofmt] [-r [leaks | all]] [-T src_cache] filename")
STEXI
-@item check [-q] [-f @var{fmt}] [--output=@var{ofmt}] [-r [leaks | all]] [-T @var{src_cache}] @var{filename}
+@item check [--object @var{objectdef}] [-q] [-f @var{fmt}] [--output=@var{ofmt}] [-r [leaks | all]] [-T @var{src_cache}] @var{filename}
ETEXI
DEF("create", img_create,
- "create [-q] [-f fmt] [-o options] filename [size]")
+ "create [-q] [--object objectdef] [-f fmt] [-o options] filename [size]")
STEXI
-@item create [-q] [-f @var{fmt}] [-o @var{options}] @var{filename} [@var{size}]
+@item create [--object @var{objectdef}] [-q] [-f @var{fmt}] [-o @var{options}] @var{filename} [@var{size}]
ETEXI
DEF("commit", img_commit,
- "commit [-q] [-f fmt] [-t cache] [-b base] [-d] [-p] filename")
+ "commit [-q] [--object objectdef] [-f fmt] [-t cache] [-b base] [-d] [-p] filename")
STEXI
-@item commit [-q] [-f @var{fmt}] [-t @var{cache}] [-b @var{base}] [-d] [-p] @var{filename}
+@item commit [--object @var{objectdef}] [-q] [-f @var{fmt}] [-t @var{cache}] [-b @var{base}] [-d] [-p] @var{filename}
ETEXI
DEF("compare", img_compare,
- "compare [-f fmt] [-F fmt] [-T src_cache] [-p] [-q] [-s] filename1 filename2")
+ "compare [--object objectdef] [-f fmt] [-F fmt] [-T src_cache] [-p] [-q] [-s] filename1 filename2")
STEXI
-@item compare [-f @var{fmt}] [-F @var{fmt}] [-T @var{src_cache}] [-p] [-q] [-s] @var{filename1} @var{filename2}
+@item compare [--object @var{objectdef}] [-f @var{fmt}] [-F @var{fmt}] [-T @var{src_cache}] [-p] [-q] [-s] @var{filename1} @var{filename2}
ETEXI
DEF("convert", img_convert,
- "convert [-c] [-p] [-q] [-n] [-f fmt] [-t cache] [-T src_cache] [-O output_fmt] [-o options] [-s snapshot_id_or_name] [-l snapshot_param] [-S sparse_size] filename [filename2 [...]] output_filename")
+ "convert [--object objectdef] [-c] [-p] [-q] [-n] [-f fmt] [-t cache] [-T src_cache] [-O output_fmt] [-o options] [-s snapshot_id_or_name] [-l snapshot_param] [-S sparse_size] filename [filename2 [...]] output_filename")
STEXI
-@item convert [-c] [-p] [-q] [-n] [-f @var{fmt}] [-t @var{cache}] [-T @var{src_cache}] [-O @var{output_fmt}] [-o @var{options}] [-s @var{snapshot_id_or_name}] [-l @var{snapshot_param}] [-S @var{sparse_size}] @var{filename} [@var{filename2} [...]] @var{output_filename}
+@item convert [--object @var{objectdef}] [-c] [-p] [-q] [-n] [-f @var{fmt}] [-t @var{cache}] [-T @var{src_cache}] [-O @var{output_fmt}] [-o @var{options}] [-s @var{snapshot_id_or_name}] [-l @var{snapshot_param}] [-S @var{sparse_size}] @var{filename} [@var{filename2} [...]] @var{output_filename}
ETEXI
DEF("info", img_info,
- "info [-f fmt] [--output=ofmt] [--backing-chain] filename")
+ "info [--object objectdef] [-f fmt] [--output=ofmt] [--backing-chain] filename")
STEXI
-@item info [-f @var{fmt}] [--output=@var{ofmt}] [--backing-chain] @var{filename}
+@item info [--object @var{objectdef}] [-f @var{fmt}] [--output=@var{ofmt}] [--backing-chain] @var{filename}
ETEXI
DEF("map", img_map,
- "map [-f fmt] [--output=ofmt] filename")
+ "map [--object objectdef] [-f fmt] [--output=ofmt] filename")
STEXI
-@item map [-f @var{fmt}] [--output=@var{ofmt}] @var{filename}
+@item map [--object @var{objectdef}] [-f @var{fmt}] [--output=@var{ofmt}] @var{filename}
ETEXI
DEF("snapshot", img_snapshot,
- "snapshot [-q] [-l | -a snapshot | -c snapshot | -d snapshot] filename")
+ "snapshot [--object objectdef] [-q] [-l | -a snapshot | -c snapshot | -d snapshot] filename")
STEXI
-@item snapshot [-q] [-l | -a @var{snapshot} | -c @var{snapshot} | -d @var{snapshot}] @var{filename}
+@item snapshot [--object @var{objectdef}] [-q] [-l | -a @var{snapshot} | -c @var{snapshot} | -d @var{snapshot}] @var{filename}
ETEXI
DEF("rebase", img_rebase,
- "rebase [-q] [-f fmt] [-t cache] [-T src_cache] [-p] [-u] -b backing_file [-F backing_fmt] filename")
+ "rebase [--object objectdef] [-q] [-f fmt] [-t cache] [-T src_cache] [-p] [-u] -b backing_file [-F backing_fmt] filename")
STEXI
-@item rebase [-q] [-f @var{fmt}] [-t @var{cache}] [-T @var{src_cache}] [-p] [-u] -b @var{backing_file} [-F @var{backing_fmt}] @var{filename}
+@item rebase [--object @var{objectdef}] [-q] [-f @var{fmt}] [-t @var{cache}] [-T @var{src_cache}] [-p] [-u] -b @var{backing_file} [-F @var{backing_fmt}] @var{filename}
ETEXI
DEF("resize", img_resize,
- "resize [-q] filename [+ | -]size")
+ "resize [--object objectdef] [-q] filename [+ | -]size")
STEXI
-@item resize [-q] @var{filename} [+ | -]@var{size}
+@item resize [--object @var{objectdef}] [-q] @var{filename} [+ | -]@var{size}
ETEXI
DEF("amend", img_amend,
- "amend [-p] [-q] [-f fmt] [-t cache] -o options filename")
+ "amend [--object objectdef] [-p] [-q] [-f fmt] [-t cache] -o options filename")
STEXI
-@item amend [-p] [-q] [-f @var{fmt}] [-t @var{cache}] -o @var{options} @var{filename}
+@item amend [--object @var{objectdef}] [-p] [-q] [-f @var{fmt}] [-t @var{cache}] -o @var{options} @var{filename}
@end table
ETEXI
diff --git a/qemu-img.c b/qemu-img.c
index fb9ab1f..fc8070c 100644
--- a/qemu-img.c
+++ b/qemu-img.c
@@ -27,8 +27,10 @@
#include "qapi/qmp/qerror.h"
#include "qapi/qmp/qjson.h"
#include "qemu-common.h"
+#include "qemu/config-file.h"
#include "qemu/option.h"
#include "qemu/error-report.h"
+#include "qom/object_interfaces.h"
#include "sysemu/sysemu.h"
#include "sysemu/block-backend.h"
#include "block/block_int.h"
@@ -47,6 +49,7 @@ typedef struct img_cmd_t {
enum {
OPTION_OUTPUT = 256,
OPTION_BACKING_CHAIN = 257,
+ OPTION_OBJECT = 258,
};
typedef enum OutputFormat {
@@ -94,6 +97,10 @@ static void QEMU_NORETURN help(void)
"\n"
"Command parameters:\n"
" 'filename' is a disk image filename\n"
+ " 'objectdef' is a QEMU user creatable object definition. See the qemu(1)\n"
+ " manual page for a description of the object properties. The most common\n"
+ " object type is a 'secret', which is used to supply passwords and/or\n"
+ " encryption keys.\n"
" 'fmt' is the disk image format. It is guessed automatically in most cases\n"
" 'cache' is the cache mode used to write the output disk image, the valid\n"
" options are: 'none', 'writeback' (default, except for convert), 'writethrough',\n"
@@ -154,6 +161,15 @@ static void QEMU_NORETURN help(void)
exit(EXIT_SUCCESS);
}
+static QemuOptsList qemu_object_opts = {
+ .name = "object",
+ .implied_opt_name = "qom-type",
+ .head = QTAILQ_HEAD_INITIALIZER(qemu_object_opts.head),
+ .desc = {
+ { }
+ },
+};
+
static int GCC_FMT_ATTR(2, 3) qprintf(bool quiet, const char *fmt, ...)
{
int ret = 0;
@@ -275,7 +291,13 @@ static int img_create(int argc, char **argv)
bool quiet = false;
for(;;) {
- c = getopt(argc, argv, "F:b:f:he6o:q");
+ static const struct option long_options[] = {
+ {"help", no_argument, 0, 'h'},
+ {"object", required_argument, 0, OPTION_OBJECT},
+ {0, 0, 0, 0}
+ };
+ c = getopt_long(argc, argv, "F:b:f:he6o:q",
+ long_options, NULL);
if (c == -1) {
break;
}
@@ -317,6 +339,14 @@ static int img_create(int argc, char **argv)
case 'q':
quiet = true;
break;
+ case OPTION_OBJECT: {
+ QemuOpts *opts;
+ opts = qemu_opts_parse_noisily(&qemu_object_opts,
+ optarg, true);
+ if (!opts) {
+ goto fail;
+ }
+ } break;
}
}
@@ -332,6 +362,13 @@ static int img_create(int argc, char **argv)
}
optind++;
+ if (qemu_opts_foreach(&qemu_object_opts,
+ user_creatable_add_opts_foreach,
+ NULL, &local_err)) {
+ error_report_err(local_err);
+ goto fail;
+ }
+
/* Get image size, if specified */
if (optind < argc) {
int64_t sval;
@@ -489,6 +526,7 @@ static int img_check(int argc, char **argv)
int flags = BDRV_O_FLAGS | BDRV_O_CHECK;
ImageCheck *check;
bool quiet = false;
+ Error *local_err = NULL;
fmt = NULL;
output = NULL;
@@ -500,6 +538,7 @@ static int img_check(int argc, char **argv)
{"format", required_argument, 0, 'f'},
{"repair", required_argument, 0, 'r'},
{"output", required_argument, 0, OPTION_OUTPUT},
+ {"object", required_argument, 0, OPTION_OBJECT},
{0, 0, 0, 0}
};
c = getopt_long(argc, argv, "hf:r:T:q",
@@ -536,6 +575,14 @@ static int img_check(int argc, char **argv)
case 'q':
quiet = true;
break;
+ case OPTION_OBJECT: {
+ QemuOpts *opts;
+ opts = qemu_opts_parse_noisily(&qemu_object_opts,
+ optarg, true);
+ if (!opts) {
+ return 1;
+ }
+ } break;
}
}
if (optind != argc - 1) {
@@ -552,6 +599,13 @@ static int img_check(int argc, char **argv)
return 1;
}
+ if (qemu_opts_foreach(&qemu_object_opts,
+ user_creatable_add_opts_foreach,
+ NULL, &local_err)) {
+ error_report_err(local_err);
+ return 1;
+ }
+
ret = bdrv_parse_cache_flags(cache, &flags);
if (ret < 0) {
error_report("Invalid source cache option: %s", cache);
@@ -675,7 +729,13 @@ static int img_commit(int argc, char **argv)
cache = BDRV_DEFAULT_CACHE;
base = NULL;
for(;;) {
- c = getopt(argc, argv, "f:ht:b:dpq");
+ static const struct option long_options[] = {
+ {"help", no_argument, 0, 'h'},
+ {"object", required_argument, 0, OPTION_OBJECT},
+ {0, 0, 0, 0}
+ };
+ c = getopt_long(argc, argv, "f:ht:b:dpq",
+ long_options, NULL);
if (c == -1) {
break;
}
@@ -704,6 +764,14 @@ static int img_commit(int argc, char **argv)
case 'q':
quiet = true;
break;
+ case OPTION_OBJECT: {
+ QemuOpts *opts;
+ opts = qemu_opts_parse_noisily(&qemu_object_opts,
+ optarg, true);
+ if (!opts) {
+ return 1;
+ }
+ } break;
}
}
@@ -717,6 +785,13 @@ static int img_commit(int argc, char **argv)
}
filename = argv[optind++];
+ if (qemu_opts_foreach(&qemu_object_opts,
+ user_creatable_add_opts_foreach,
+ NULL, &local_err)) {
+ error_report_err(local_err);
+ return 1;
+ }
+
flags = BDRV_O_RDWR | BDRV_O_UNMAP;
ret = bdrv_parse_cache_flags(cache, &flags);
if (ret < 0) {
@@ -973,10 +1048,17 @@ static int img_compare(int argc, char **argv)
int64_t nb_sectors;
int c, pnum;
uint64_t progress_base;
+ Error *local_err = NULL;
cache = BDRV_DEFAULT_CACHE;
for (;;) {
- c = getopt(argc, argv, "hf:F:T:pqs");
+ static const struct option long_options[] = {
+ {"help", no_argument, 0, 'h'},
+ {"object", required_argument, 0, OPTION_OBJECT},
+ {0, 0, 0, 0}
+ };
+ c = getopt_long(argc, argv, "hf:F:T:pqs",
+ long_options, NULL);
if (c == -1) {
break;
}
@@ -1003,6 +1085,15 @@ static int img_compare(int argc, char **argv)
case 's':
strict = true;
break;
+ case OPTION_OBJECT: {
+ QemuOpts *opts;
+ opts = qemu_opts_parse_noisily(&qemu_object_opts,
+ optarg, true);
+ if (!opts) {
+ ret = 2;
+ goto out4;
+ }
+ } break;
}
}
@@ -1018,6 +1109,14 @@ static int img_compare(int argc, char **argv)
filename1 = argv[optind++];
filename2 = argv[optind++];
+ if (qemu_opts_foreach(&qemu_object_opts,
+ user_creatable_add_opts_foreach,
+ NULL, &local_err)) {
+ error_report_err(local_err);
+ ret = 2;
+ goto out4;
+ }
+
/* Initialize before goto out */
qemu_progress_init(progress, 2.0);
@@ -1225,6 +1324,7 @@ out2:
blk_unref(blk1);
out3:
qemu_progress_end();
+out4:
return ret;
}
@@ -1555,7 +1655,13 @@ static int img_convert(int argc, char **argv)
compress = 0;
skip_create = 0;
for(;;) {
- c = getopt(argc, argv, "hf:O:B:ce6o:s:l:S:pt:T:qn");
+ static const struct option long_options[] = {
+ {"help", no_argument, 0, 'h'},
+ {"object", required_argument, 0, OPTION_OBJECT},
+ {0, 0, 0, 0}
+ };
+ c = getopt_long(argc, argv, "hf:O:B:ce6o:s:l:S:pt:T:qn",
+ long_options, NULL);
if (c == -1) {
break;
}
@@ -1646,9 +1752,23 @@ static int img_convert(int argc, char **argv)
case 'n':
skip_create = 1;
break;
+ case OPTION_OBJECT:
+ opts = qemu_opts_parse_noisily(&qemu_object_opts,
+ optarg, true);
+ if (!opts) {
+ goto fail_getopt;
+ }
+ break;
}
}
+ if (qemu_opts_foreach(&qemu_object_opts,
+ user_creatable_add_opts_foreach,
+ NULL, &local_err)) {
+ error_report_err(local_err);
+ goto fail_getopt;
+ }
+
/* Initialize before goto out */
if (quiet) {
progress = 0;
@@ -2077,6 +2197,7 @@ static int img_info(int argc, char **argv)
bool chain = false;
const char *filename, *fmt, *output;
ImageInfoList *list;
+ Error *local_err = NULL;
fmt = NULL;
output = NULL;
@@ -2087,6 +2208,7 @@ static int img_info(int argc, char **argv)
{"format", required_argument, 0, 'f'},
{"output", required_argument, 0, OPTION_OUTPUT},
{"backing-chain", no_argument, 0, OPTION_BACKING_CHAIN},
+ {"object", required_argument, 0, OPTION_OBJECT},
{0, 0, 0, 0}
};
c = getopt_long(argc, argv, "f:h",
@@ -2108,6 +2230,14 @@ static int img_info(int argc, char **argv)
case OPTION_BACKING_CHAIN:
chain = true;
break;
+ case OPTION_OBJECT: {
+ QemuOpts *opts;
+ opts = qemu_opts_parse_noisily(&qemu_object_opts,
+ optarg, true);
+ if (!opts) {
+ return 1;
+ }
+ } break;
}
}
if (optind != argc - 1) {
@@ -2124,6 +2254,13 @@ static int img_info(int argc, char **argv)
return 1;
}
+ if (qemu_opts_foreach(&qemu_object_opts,
+ user_creatable_add_opts_foreach,
+ NULL, &local_err)) {
+ error_report_err(local_err);
+ return 1;
+ }
+
list = collect_image_info_list(filename, fmt, chain);
if (!list) {
return 1;
@@ -2269,6 +2406,7 @@ static int img_map(int argc, char **argv)
int64_t length;
MapEntry curr = { .length = 0 }, next;
int ret = 0;
+ Error *local_err = NULL;
fmt = NULL;
output = NULL;
@@ -2278,6 +2416,7 @@ static int img_map(int argc, char **argv)
{"help", no_argument, 0, 'h'},
{"format", required_argument, 0, 'f'},
{"output", required_argument, 0, OPTION_OUTPUT},
+ {"object", required_argument, 0, OPTION_OBJECT},
{0, 0, 0, 0}
};
c = getopt_long(argc, argv, "f:h",
@@ -2296,6 +2435,14 @@ static int img_map(int argc, char **argv)
case OPTION_OUTPUT:
output = optarg;
break;
+ case OPTION_OBJECT: {
+ QemuOpts *opts;
+ opts = qemu_opts_parse_noisily(&qemu_object_opts,
+ optarg, true);
+ if (!opts) {
+ return 1;
+ }
+ } break;
}
}
if (optind != argc - 1) {
@@ -2312,6 +2459,13 @@ static int img_map(int argc, char **argv)
return 1;
}
+ if (qemu_opts_foreach(&qemu_object_opts,
+ user_creatable_add_opts_foreach,
+ NULL, &local_err)) {
+ error_report_err(local_err);
+ return 1;
+ }
+
blk = img_open("image", filename, fmt, BDRV_O_FLAGS, true, false);
if (!blk) {
return 1;
@@ -2378,7 +2532,13 @@ static int img_snapshot(int argc, char **argv)
bdrv_oflags = BDRV_O_FLAGS | BDRV_O_RDWR;
/* Parse commandline parameters */
for(;;) {
- c = getopt(argc, argv, "la:c:d:hq");
+ static const struct option long_options[] = {
+ {"help", no_argument, 0, 'h'},
+ {"object", required_argument, 0, OPTION_OBJECT},
+ {0, 0, 0, 0}
+ };
+ c = getopt_long(argc, argv, "la:c:d:hq",
+ long_options, NULL);
if (c == -1) {
break;
}
@@ -2422,6 +2582,14 @@ static int img_snapshot(int argc, char **argv)
case 'q':
quiet = true;
break;
+ case OPTION_OBJECT: {
+ QemuOpts *opts;
+ opts = qemu_opts_parse_noisily(&qemu_object_opts,
+ optarg, true);
+ if (!opts) {
+ return 1;
+ }
+ } break;
}
}
@@ -2430,6 +2598,13 @@ static int img_snapshot(int argc, char **argv)
}
filename = argv[optind++];
+ if (qemu_opts_foreach(&qemu_object_opts,
+ user_creatable_add_opts_foreach,
+ NULL, &err)) {
+ error_report_err(err);
+ return 1;
+ }
+
/* Open the image */
blk = img_open("image", filename, NULL, bdrv_oflags, true, quiet);
if (!blk) {
@@ -2503,7 +2678,13 @@ static int img_rebase(int argc, char **argv)
out_baseimg = NULL;
out_basefmt = NULL;
for(;;) {
- c = getopt(argc, argv, "hf:F:b:upt:T:q");
+ static const struct option long_options[] = {
+ {"help", no_argument, 0, 'h'},
+ {"object", required_argument, 0, OPTION_OBJECT},
+ {0, 0, 0, 0}
+ };
+ c = getopt_long(argc, argv, "hf:F:b:upt:T:q",
+ long_options, NULL);
if (c == -1) {
break;
}
@@ -2536,6 +2717,14 @@ static int img_rebase(int argc, char **argv)
case 'q':
quiet = true;
break;
+ case OPTION_OBJECT: {
+ QemuOpts *opts;
+ opts = qemu_opts_parse_noisily(&qemu_object_opts,
+ optarg, true);
+ if (!opts) {
+ return 1;
+ }
+ } break;
}
}
@@ -2551,6 +2740,13 @@ static int img_rebase(int argc, char **argv)
}
filename = argv[optind++];
+ if (qemu_opts_foreach(&qemu_object_opts,
+ user_creatable_add_opts_foreach,
+ NULL, &local_err)) {
+ error_report_err(local_err);
+ return 1;
+ }
+
qemu_progress_init(progress, 2.0);
qemu_progress_print(0, 100);
@@ -2811,6 +3007,8 @@ static int img_resize(int argc, char **argv)
bool quiet = false;
BlockBackend *blk = NULL;
QemuOpts *param;
+ Error *local_err = NULL;
+
static QemuOptsList resize_options = {
.name = "resize_options",
.head = QTAILQ_HEAD_INITIALIZER(resize_options.head),
@@ -2837,7 +3035,13 @@ static int img_resize(int argc, char **argv)
/* Parse getopt arguments */
fmt = NULL;
for(;;) {
- c = getopt(argc, argv, "f:hq");
+ static const struct option long_options[] = {
+ {"help", no_argument, 0, 'h'},
+ {"object", required_argument, 0, OPTION_OBJECT},
+ {0, 0, 0, 0}
+ };
+ c = getopt_long(argc, argv, "f:hq",
+ long_options, NULL);
if (c == -1) {
break;
}
@@ -2852,6 +3056,14 @@ static int img_resize(int argc, char **argv)
case 'q':
quiet = true;
break;
+ case OPTION_OBJECT: {
+ QemuOpts *opts;
+ opts = qemu_opts_parse_noisily(&qemu_object_opts,
+ optarg, true);
+ if (!opts) {
+ return 1;
+ }
+ } break;
}
}
if (optind != argc - 1) {
@@ -2859,6 +3071,13 @@ static int img_resize(int argc, char **argv)
}
filename = argv[optind++];
+ if (qemu_opts_foreach(&qemu_object_opts,
+ user_creatable_add_opts_foreach,
+ NULL, &local_err)) {
+ error_report_err(local_err);
+ return 1;
+ }
+
/* Choose grow, shrink, or absolute resize mode */
switch (size[0]) {
case '+':
@@ -2946,10 +3165,17 @@ static int img_amend(int argc, char **argv)
bool quiet = false, progress = false;
BlockBackend *blk = NULL;
BlockDriverState *bs = NULL;
+ Error *local_err = NULL;
cache = BDRV_DEFAULT_CACHE;
for (;;) {
- c = getopt(argc, argv, "ho:f:t:pq");
+ static const struct option long_options[] = {
+ {"help", no_argument, 0, 'h'},
+ {"object", required_argument, 0, OPTION_OBJECT},
+ {0, 0, 0, 0}
+ };
+ c = getopt_long(argc, argv, "ho:f:t:pq",
+ long_options, NULL);
if (c == -1) {
break;
}
@@ -2985,6 +3211,14 @@ static int img_amend(int argc, char **argv)
case 'q':
quiet = true;
break;
+ case OPTION_OBJECT:
+ opts = qemu_opts_parse_noisily(&qemu_object_opts,
+ optarg, true);
+ if (!opts) {
+ ret = -1;
+ goto out_no_progress;
+ }
+ break;
}
}
@@ -2992,6 +3226,14 @@ static int img_amend(int argc, char **argv)
error_exit("Must specify options (-o)");
}
+ if (qemu_opts_foreach(&qemu_object_opts,
+ user_creatable_add_opts_foreach,
+ NULL, &local_err)) {
+ error_report_err(local_err);
+ ret = -1;
+ goto out_no_progress;
+ }
+
if (quiet) {
progress = false;
}
@@ -3115,6 +3357,8 @@ int main(int argc, char **argv)
}
cmdname = argv[1];
+ qemu_add_opts(&qemu_object_opts);
+
/* find the command */
for (cmd = img_cmds; cmd->name != NULL; cmd++) {
if (!strcmp(cmdname, cmd->name)) {
diff --git a/qemu-img.texi b/qemu-img.texi
index 7163a10..9e47543 100644
--- a/qemu-img.texi
+++ b/qemu-img.texi
@@ -24,6 +24,14 @@ Command parameters:
@table @var
@item filename
is a disk image filename
+
+@item --object @var{objectdef}
+
+is a QEMU user creatable object definition. See the @code{qemu(1)} manual
+page for a description of the object properties. The most common object
+type is a @code{secret}, which is used to supply passwords and/or encryption
+keys.
+
@item fmt
is the disk image format. It is guessed automatically in most cases. See below
for a description of the supported disk formats.
--
1.8.3.1
^ permalink raw reply related [flat|nested] 36+ messages in thread
* [Qemu-devel] [PULL 07/34] qemu-io: allow specifying image as a set of options args
2016-02-22 16:32 [Qemu-devel] [PULL 00/34] Block layer patches Kevin Wolf
` (5 preceding siblings ...)
2016-02-22 16:32 ` [Qemu-devel] [PULL 06/34] qemu-img: " Kevin Wolf
@ 2016-02-22 16:32 ` Kevin Wolf
2016-02-22 16:32 ` [Qemu-devel] [PULL 08/34] qemu-nbd: " Kevin Wolf
` (27 subsequent siblings)
34 siblings, 0 replies; 36+ messages in thread
From: Kevin Wolf @ 2016-02-22 16:32 UTC (permalink / raw)
To: qemu-block; +Cc: kwolf, qemu-devel
From: "Daniel P. Berrange" <berrange@redhat.com>
Currently qemu-io allows an image filename to be passed on the
command line, but unless using the JSON format, it does not have
a way to set any options except the format eg
qemu-io https://127.0.0.1/images/centos7.iso
qemu-io /home/berrange/demo.qcow2
By contrast when using the interactive shell, it is possible to
use --option with the 'open' command, or to omit the filename.
This adds a --image-opts arg that indicates that the positional
filename should be interpreted as a full option string, not
just a filename.
qemu-io --image-opts driver=https,url=https://127.0.0.1/images,sslverify=off
qemu-io --image-opts driver=qcow2,file.filename=/home/berrange/demo.qcow2
This flag is mutually exclusive with the '-f' flag and with
the '-o' flag to the 'open' command
Signed-off-by: Daniel P. Berrange <berrange@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
---
qemu-io.c | 57 +++++++++++++++++++++++++++++++++++++++++++++++++++------
1 file changed, 51 insertions(+), 6 deletions(-)
diff --git a/qemu-io.c b/qemu-io.c
index 969c8bf..4a0d5f0 100644
--- a/qemu-io.c
+++ b/qemu-io.c
@@ -32,6 +32,7 @@ static BlockBackend *qemuio_blk;
/* qemu-io commands passed using -c */
static int ncmdline;
static char **cmdline;
+static bool imageOpts;
static ReadLineState *readline_state;
@@ -151,6 +152,10 @@ static int open_f(BlockBackend *blk, int argc, char **argv)
readonly = 1;
break;
case 'o':
+ if (imageOpts) {
+ printf("--image-opts and 'open -o' are mutually exclusive\n");
+ return 0;
+ }
if (!qemu_opts_parse_noisily(&empty_opts, optarg, false)) {
qemu_opts_reset(&empty_opts);
return 0;
@@ -166,6 +171,14 @@ static int open_f(BlockBackend *blk, int argc, char **argv)
flags |= BDRV_O_RDWR;
}
+ if (imageOpts && (optind == argc - 1)) {
+ if (!qemu_opts_parse_noisily(&empty_opts, argv[optind], false)) {
+ qemu_opts_reset(&empty_opts);
+ return 0;
+ }
+ optind++;
+ }
+
qopts = qemu_opts_find(&empty_opts, NULL);
opts = qopts ? qemu_opts_to_qdict(qopts, NULL) : NULL;
qemu_opts_reset(&empty_opts);
@@ -366,6 +379,7 @@ static void reenable_tty_echo(void)
enum {
OPTION_OBJECT = 256,
+ OPTION_IMAGE_OPTS = 257,
};
static QemuOptsList qemu_object_opts = {
@@ -378,6 +392,16 @@ static QemuOptsList qemu_object_opts = {
};
+static QemuOptsList file_opts = {
+ .name = "file",
+ .implied_opt_name = "file",
+ .head = QTAILQ_HEAD_INITIALIZER(file_opts.head),
+ .desc = {
+ /* no elements => accept any params */
+ { /* end of list */ }
+ },
+};
+
int main(int argc, char **argv)
{
int readonly = 0;
@@ -397,6 +421,7 @@ int main(int argc, char **argv)
{ "cache", 1, NULL, 't' },
{ "trace", 1, NULL, 'T' },
{ "object", 1, NULL, OPTION_OBJECT },
+ { "image-opts", 0, NULL, OPTION_IMAGE_OPTS },
{ NULL, 0, NULL, 0 }
};
int c;
@@ -404,6 +429,7 @@ int main(int argc, char **argv)
int flags = BDRV_O_UNMAP;
Error *local_error = NULL;
QDict *opts = NULL;
+ const char *format = NULL;
#ifdef CONFIG_POSIX
signal(SIGPIPE, SIG_IGN);
@@ -431,10 +457,7 @@ int main(int argc, char **argv)
}
break;
case 'f':
- if (!opts) {
- opts = qdict_new();
- }
- qdict_put(opts, "driver", qstring_from_str(optarg));
+ format = optarg;
break;
case 'c':
add_user_command(optarg);
@@ -466,13 +489,16 @@ int main(int argc, char **argv)
usage(progname);
exit(0);
case OPTION_OBJECT: {
- QemuOpts *qopts = NULL;
+ QemuOpts *qopts;
qopts = qemu_opts_parse_noisily(&qemu_object_opts,
optarg, true);
if (!qopts) {
exit(1);
}
} break;
+ case OPTION_IMAGE_OPTS:
+ imageOpts = true;
+ break;
default:
usage(progname);
exit(1);
@@ -484,6 +510,11 @@ int main(int argc, char **argv)
exit(1);
}
+ if (format && imageOpts) {
+ error_report("--image-opts and -f are mutually exclusive");
+ exit(1);
+ }
+
if (qemu_init_main_loop(&local_error)) {
error_report_err(local_error);
exit(1);
@@ -516,7 +547,21 @@ int main(int argc, char **argv)
}
if ((argc - optind) == 1) {
- openfile(argv[optind], flags, opts);
+ if (imageOpts) {
+ QemuOpts *qopts = NULL;
+ qopts = qemu_opts_parse_noisily(&file_opts, argv[optind], false);
+ if (!qopts) {
+ exit(1);
+ }
+ opts = qemu_opts_to_qdict(qopts, NULL);
+ openfile(NULL, flags, opts);
+ } else {
+ if (format) {
+ opts = qdict_new();
+ qdict_put(opts, "driver", qstring_from_str(format));
+ }
+ openfile(argv[optind], flags, opts);
+ }
}
command_loop();
--
1.8.3.1
^ permalink raw reply related [flat|nested] 36+ messages in thread
* [Qemu-devel] [PULL 08/34] qemu-nbd: allow specifying image as a set of options args
2016-02-22 16:32 [Qemu-devel] [PULL 00/34] Block layer patches Kevin Wolf
` (6 preceding siblings ...)
2016-02-22 16:32 ` [Qemu-devel] [PULL 07/34] qemu-io: allow specifying image as a set of options args Kevin Wolf
@ 2016-02-22 16:32 ` Kevin Wolf
2016-02-22 16:32 ` [Qemu-devel] [PULL 09/34] qemu-img: " Kevin Wolf
` (26 subsequent siblings)
34 siblings, 0 replies; 36+ messages in thread
From: Kevin Wolf @ 2016-02-22 16:32 UTC (permalink / raw)
To: qemu-block; +Cc: kwolf, qemu-devel
From: "Daniel P. Berrange" <berrange@redhat.com>
Currently qemu-nbd allows an image filename to be passed on the
command line, but unless using the JSON format, it does not have
a way to set any options except the format eg
qemu-nbd https://127.0.0.1/images/centos7.iso
qemu-nbd /home/berrange/demo.qcow2
This adds a --image-opts arg that indicates that the positional
filename should be interpreted as a full option string, not
just a filename.
qemu-nbd --image-opts driver=https,url=https://127.0.0.1/images,sslverify=off
qemu-nbd --image-opts driver=file,filename=/home/berrange/demo.qcow2
This flag is mutually exclusive with the '-f' flag.
Signed-off-by: Daniel P. Berrange <berrange@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
---
qemu-nbd.c | 43 ++++++++++++++++++++++++++++++++++++++-----
qemu-nbd.texi | 7 ++++++-
2 files changed, 44 insertions(+), 6 deletions(-)
diff --git a/qemu-nbd.c b/qemu-nbd.c
index 933ca4a..424e71f 100644
--- a/qemu-nbd.c
+++ b/qemu-nbd.c
@@ -43,6 +43,7 @@
#define QEMU_NBD_OPT_DETECT_ZEROES 4
#define QEMU_NBD_OPT_OBJECT 5
#define QEMU_NBD_OPT_TLSCREDS 6
+#define QEMU_NBD_OPT_IMAGE_OPTS 7
static NBDExport *exp;
static bool newproto;
@@ -105,6 +106,7 @@ static void usage(const char *name)
" --aio=MODE set AIO mode (native or threads)\n"
" --discard=MODE set discard mode (ignore, unmap)\n"
" --detect-zeroes=MODE set detect-zeroes mode (off, on, unmap)\n"
+" --image-opts treat FILE as a full set of image options\n"
"\n"
"Report bugs to <qemu-devel@nongnu.org>\n"
, name, NBD_DEFAULT_PORT, "DEVICE");
@@ -394,6 +396,16 @@ static SocketAddress *nbd_build_socket_address(const char *sockpath,
}
+static QemuOptsList file_opts = {
+ .name = "file",
+ .implied_opt_name = "file",
+ .head = QTAILQ_HEAD_INITIALIZER(file_opts.head),
+ .desc = {
+ /* no elements => accept any params */
+ { /* end of list */ }
+ },
+};
+
static QemuOptsList qemu_object_opts = {
.name = "object",
.implied_opt_name = "qom-type",
@@ -475,6 +487,7 @@ int main(int argc, char **argv)
{ "object", 1, NULL, QEMU_NBD_OPT_OBJECT },
{ "export-name", 1, NULL, 'x' },
{ "tls-creds", 1, NULL, QEMU_NBD_OPT_TLSCREDS },
+ { "image-opts", 0, NULL, QEMU_NBD_OPT_IMAGE_OPTS },
{ NULL, 0, NULL, 0 }
};
int ch;
@@ -493,6 +506,7 @@ int main(int argc, char **argv)
QDict *options = NULL;
const char *export_name = NULL;
const char *tlscredsid = NULL;
+ bool imageOpts = false;
/* The client thread uses SIGTERM to interrupt the server. A signal
* handler ensures that "qemu-nbd -v -c" exits with a nice status code.
@@ -672,6 +686,9 @@ int main(int argc, char **argv)
case QEMU_NBD_OPT_TLSCREDS:
tlscredsid = optarg;
break;
+ case QEMU_NBD_OPT_IMAGE_OPTS:
+ imageOpts = true;
+ break;
}
}
@@ -800,13 +817,29 @@ int main(int argc, char **argv)
bdrv_init();
atexit(bdrv_close_all);
- if (fmt) {
- options = qdict_new();
- qdict_put(options, "driver", qstring_from_str(fmt));
+ srcpath = argv[optind];
+ if (imageOpts) {
+ QemuOpts *opts;
+ if (fmt) {
+ error_report("--image-opts and -f are mutually exclusive");
+ exit(EXIT_FAILURE);
+ }
+ opts = qemu_opts_parse_noisily(&file_opts, srcpath, true);
+ if (!opts) {
+ qemu_opts_reset(&file_opts);
+ exit(EXIT_FAILURE);
+ }
+ options = qemu_opts_to_qdict(opts, NULL);
+ qemu_opts_reset(&file_opts);
+ blk = blk_new_open("hda", NULL, NULL, options, flags, &local_err);
+ } else {
+ if (fmt) {
+ options = qdict_new();
+ qdict_put(options, "driver", qstring_from_str(fmt));
+ }
+ blk = blk_new_open("hda", srcpath, NULL, options, flags, &local_err);
}
- srcpath = argv[optind];
- blk = blk_new_open("hda", srcpath, NULL, options, flags, &local_err);
if (!blk) {
error_reportf_err(local_err, "Failed to blk_new_open '%s': ",
argv[optind]);
diff --git a/qemu-nbd.texi b/qemu-nbd.texi
index 227a73c..9f23343 100644
--- a/qemu-nbd.texi
+++ b/qemu-nbd.texi
@@ -13,7 +13,8 @@ Export a QEMU disk image using the NBD protocol.
@c man end
@c man begin OPTIONS
-@var{filename} is a disk image filename.
+@var{filename} is a disk image filename, or a set of block
+driver options if @var{--image-opts} is specified.
@var{dev} is an NBD device.
@@ -33,6 +34,10 @@ The offset into the image
The interface to bind to (default @samp{0.0.0.0})
@item -k, --socket=@var{path}
Use a unix socket with path @var{path}
+@item --image-opts
+Treat @var{filename} as a set of image options, instead of a plain
+filename. If this flag is specified, the @var{-f} flag should
+not be used, instead the '@code{format=}' option should be set.
@item -f, --format=@var{fmt}
Force the use of the block driver for format @var{fmt} instead of
auto-detecting
--
1.8.3.1
^ permalink raw reply related [flat|nested] 36+ messages in thread
* [Qemu-devel] [PULL 09/34] qemu-img: allow specifying image as a set of options args
2016-02-22 16:32 [Qemu-devel] [PULL 00/34] Block layer patches Kevin Wolf
` (7 preceding siblings ...)
2016-02-22 16:32 ` [Qemu-devel] [PULL 08/34] qemu-nbd: " Kevin Wolf
@ 2016-02-22 16:32 ` Kevin Wolf
2016-02-22 16:32 ` [Qemu-devel] [PULL 10/34] qemu-nbd: don't overlap long option values with short options Kevin Wolf
` (25 subsequent siblings)
34 siblings, 0 replies; 36+ messages in thread
From: Kevin Wolf @ 2016-02-22 16:32 UTC (permalink / raw)
To: qemu-block; +Cc: kwolf, qemu-devel
From: "Daniel P. Berrange" <berrange@redhat.com>
Currently qemu-img allows an image filename to be passed on the
command line, but unless using the JSON format, it does not have
a way to set any options except the format eg
qemu-img info https://127.0.0.1/images/centos7.iso
This adds a --image-opts arg that indicates that the positional
filename should be interpreted as a full option string, not
just a filename.
qemu-img info --image-opts driver=https,url=https://127.0.0.1/images,sslverify=off
This flag is mutually exclusive with the '-f' / '-F' flags.
Signed-off-by: Daniel P. Berrange <berrange@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
---
qemu-img-cmds.hx | 44 ++++++------
qemu-img.c | 205 ++++++++++++++++++++++++++++++++++++++++++++-----------
qemu-img.texi | 6 ++
3 files changed, 195 insertions(+), 60 deletions(-)
diff --git a/qemu-img-cmds.hx b/qemu-img-cmds.hx
index 0eaf307..e7cded6 100644
--- a/qemu-img-cmds.hx
+++ b/qemu-img-cmds.hx
@@ -10,68 +10,68 @@ STEXI
ETEXI
DEF("check", img_check,
- "check [-q] [--object objectdef] [-f fmt] [--output=ofmt] [-r [leaks | all]] [-T src_cache] filename")
+ "check [-q] [--object objectdef] [--image-opts] [-f fmt] [--output=ofmt] [-r [leaks | all]] [-T src_cache] filename")
STEXI
-@item check [--object @var{objectdef}] [-q] [-f @var{fmt}] [--output=@var{ofmt}] [-r [leaks | all]] [-T @var{src_cache}] @var{filename}
+@item check [--object @var{objectdef}] [--image-opts] [-q] [-f @var{fmt}] [--output=@var{ofmt}] [-r [leaks | all]] [-T @var{src_cache}] @var{filename}
ETEXI
DEF("create", img_create,
- "create [-q] [--object objectdef] [-f fmt] [-o options] filename [size]")
+ "create [-q] [--object objectdef] [--image-opts] [-f fmt] [-o options] filename [size]")
STEXI
-@item create [--object @var{objectdef}] [-q] [-f @var{fmt}] [-o @var{options}] @var{filename} [@var{size}]
+@item create [--object @var{objectdef}] [--image-opts] [-q] [-f @var{fmt}] [-o @var{options}] @var{filename} [@var{size}]
ETEXI
DEF("commit", img_commit,
- "commit [-q] [--object objectdef] [-f fmt] [-t cache] [-b base] [-d] [-p] filename")
+ "commit [-q] [--object objectdef] [--image-opts] [-f fmt] [-t cache] [-b base] [-d] [-p] filename")
STEXI
-@item commit [--object @var{objectdef}] [-q] [-f @var{fmt}] [-t @var{cache}] [-b @var{base}] [-d] [-p] @var{filename}
+@item commit [--object @var{objectdef}] [--image-opts] [-q] [-f @var{fmt}] [-t @var{cache}] [-b @var{base}] [-d] [-p] @var{filename}
ETEXI
DEF("compare", img_compare,
- "compare [--object objectdef] [-f fmt] [-F fmt] [-T src_cache] [-p] [-q] [-s] filename1 filename2")
+ "compare [--object objectdef] [--image-opts] [-f fmt] [-F fmt] [-T src_cache] [-p] [-q] [-s] filename1 filename2")
STEXI
-@item compare [--object @var{objectdef}] [-f @var{fmt}] [-F @var{fmt}] [-T @var{src_cache}] [-p] [-q] [-s] @var{filename1} @var{filename2}
+@item compare [--object @var{objectdef}] [--image-opts] [-f @var{fmt}] [-F @var{fmt}] [-T @var{src_cache}] [-p] [-q] [-s] @var{filename1} @var{filename2}
ETEXI
DEF("convert", img_convert,
- "convert [--object objectdef] [-c] [-p] [-q] [-n] [-f fmt] [-t cache] [-T src_cache] [-O output_fmt] [-o options] [-s snapshot_id_or_name] [-l snapshot_param] [-S sparse_size] filename [filename2 [...]] output_filename")
+ "convert [--object objectdef] [--image-opts] [-c] [-p] [-q] [-n] [-f fmt] [-t cache] [-T src_cache] [-O output_fmt] [-o options] [-s snapshot_id_or_name] [-l snapshot_param] [-S sparse_size] filename [filename2 [...]] output_filename")
STEXI
-@item convert [--object @var{objectdef}] [-c] [-p] [-q] [-n] [-f @var{fmt}] [-t @var{cache}] [-T @var{src_cache}] [-O @var{output_fmt}] [-o @var{options}] [-s @var{snapshot_id_or_name}] [-l @var{snapshot_param}] [-S @var{sparse_size}] @var{filename} [@var{filename2} [...]] @var{output_filename}
+@item convert [--object @var{objectdef}] [--image-opts] [-c] [-p] [-q] [-n] [-f @var{fmt}] [-t @var{cache}] [-T @var{src_cache}] [-O @var{output_fmt}] [-o @var{options}] [-s @var{snapshot_id_or_name}] [-l @var{snapshot_param}] [-S @var{sparse_size}] @var{filename} [@var{filename2} [...]] @var{output_filename}
ETEXI
DEF("info", img_info,
- "info [--object objectdef] [-f fmt] [--output=ofmt] [--backing-chain] filename")
+ "info [--object objectdef] [--image-opts] [-f fmt] [--output=ofmt] [--backing-chain] filename")
STEXI
-@item info [--object @var{objectdef}] [-f @var{fmt}] [--output=@var{ofmt}] [--backing-chain] @var{filename}
+@item info [--object @var{objectdef}] [--image-opts] [-f @var{fmt}] [--output=@var{ofmt}] [--backing-chain] @var{filename}
ETEXI
DEF("map", img_map,
- "map [--object objectdef] [-f fmt] [--output=ofmt] filename")
+ "map [--object objectdef] [--image-opts] [-f fmt] [--output=ofmt] filename")
STEXI
-@item map [--object @var{objectdef}] [-f @var{fmt}] [--output=@var{ofmt}] @var{filename}
+@item map [--object @var{objectdef}] [--image-opts] [-f @var{fmt}] [--output=@var{ofmt}] @var{filename}
ETEXI
DEF("snapshot", img_snapshot,
- "snapshot [--object objectdef] [-q] [-l | -a snapshot | -c snapshot | -d snapshot] filename")
+ "snapshot [--object objectdef] [--image-opts] [-q] [-l | -a snapshot | -c snapshot | -d snapshot] filename")
STEXI
-@item snapshot [--object @var{objectdef}] [-q] [-l | -a @var{snapshot} | -c @var{snapshot} | -d @var{snapshot}] @var{filename}
+@item snapshot [--object @var{objectdef}] [--image-opts] [-q] [-l | -a @var{snapshot} | -c @var{snapshot} | -d @var{snapshot}] @var{filename}
ETEXI
DEF("rebase", img_rebase,
- "rebase [--object objectdef] [-q] [-f fmt] [-t cache] [-T src_cache] [-p] [-u] -b backing_file [-F backing_fmt] filename")
+ "rebase [--object objectdef] [--image-opts] [-q] [-f fmt] [-t cache] [-T src_cache] [-p] [-u] -b backing_file [-F backing_fmt] filename")
STEXI
-@item rebase [--object @var{objectdef}] [-q] [-f @var{fmt}] [-t @var{cache}] [-T @var{src_cache}] [-p] [-u] -b @var{backing_file} [-F @var{backing_fmt}] @var{filename}
+@item rebase [--object @var{objectdef}] [--image-opts] [-q] [-f @var{fmt}] [-t @var{cache}] [-T @var{src_cache}] [-p] [-u] -b @var{backing_file} [-F @var{backing_fmt}] @var{filename}
ETEXI
DEF("resize", img_resize,
- "resize [--object objectdef] [-q] filename [+ | -]size")
+ "resize [--object objectdef] [--image-opts] [-q] filename [+ | -]size")
STEXI
-@item resize [--object @var{objectdef}] [-q] @var{filename} [+ | -]@var{size}
+@item resize [--object @var{objectdef}] [--image-opts] [-q] @var{filename} [+ | -]@var{size}
ETEXI
DEF("amend", img_amend,
- "amend [--object objectdef] [-p] [-q] [-f fmt] [-t cache] -o options filename")
+ "amend [--object objectdef] [--image-opts] [-p] [-q] [-f fmt] [-t cache] -o options filename")
STEXI
-@item amend [--object @var{objectdef}] [-p] [-q] [-f @var{fmt}] [-t @var{cache}] -o @var{options} @var{filename}
+@item amend [--object @var{objectdef}] [--image-opts] [-p] [-q] [-f @var{fmt}] [-t @var{cache}] -o @var{options} @var{filename}
@end table
ETEXI
diff --git a/qemu-img.c b/qemu-img.c
index fc8070c..2edb139 100644
--- a/qemu-img.c
+++ b/qemu-img.c
@@ -50,6 +50,7 @@ enum {
OPTION_OUTPUT = 256,
OPTION_BACKING_CHAIN = 257,
OPTION_OBJECT = 258,
+ OPTION_IMAGE_OPTS = 259,
};
typedef enum OutputFormat {
@@ -170,6 +171,15 @@ static QemuOptsList qemu_object_opts = {
},
};
+static QemuOptsList qemu_source_opts = {
+ .name = "source",
+ .implied_opt_name = "file",
+ .head = QTAILQ_HEAD_INITIALIZER(qemu_source_opts.head),
+ .desc = {
+ { }
+ },
+};
+
static int GCC_FMT_ATTR(2, 3) qprintf(bool quiet, const char *fmt, ...)
{
int ret = 0;
@@ -212,13 +222,56 @@ static int print_block_option_help(const char *filename, const char *fmt)
return 0;
}
-static BlockBackend *img_open(const char *id, const char *filename,
- const char *fmt, int flags,
- bool require_io, bool quiet)
+
+static int img_open_password(BlockBackend *blk, const char *filename,
+ bool require_io, bool quiet)
{
- BlockBackend *blk;
BlockDriverState *bs;
char password[256];
+
+ bs = blk_bs(blk);
+ if (bdrv_is_encrypted(bs) && require_io) {
+ qprintf(quiet, "Disk image '%s' is encrypted.\n", filename);
+ if (qemu_read_password(password, sizeof(password)) < 0) {
+ error_report("No password given");
+ return -1;
+ }
+ if (bdrv_set_key(bs, password) < 0) {
+ error_report("invalid password");
+ return -1;
+ }
+ }
+ return 0;
+}
+
+
+static BlockBackend *img_open_opts(const char *id,
+ const char *optstr,
+ QemuOpts *opts, int flags,
+ bool require_io, bool quiet)
+{
+ QDict *options;
+ Error *local_err = NULL;
+ BlockBackend *blk;
+ options = qemu_opts_to_qdict(opts, NULL);
+ blk = blk_new_open(id, NULL, NULL, options, flags, &local_err);
+ if (!blk) {
+ error_reportf_err(local_err, "Could not open '%s'", optstr);
+ return NULL;
+ }
+
+ if (img_open_password(blk, optstr, require_io, quiet) < 0) {
+ blk_unref(blk);
+ return NULL;
+ }
+ return blk;
+}
+
+static BlockBackend *img_open_file(const char *id, const char *filename,
+ const char *fmt, int flags,
+ bool require_io, bool quiet)
+{
+ BlockBackend *blk;
Error *local_err = NULL;
QDict *options = NULL;
@@ -230,27 +283,43 @@ static BlockBackend *img_open(const char *id, const char *filename,
blk = blk_new_open(id, filename, NULL, options, flags, &local_err);
if (!blk) {
error_reportf_err(local_err, "Could not open '%s': ", filename);
- goto fail;
+ return NULL;
}
- bs = blk_bs(blk);
- if (bdrv_is_encrypted(bs) && require_io) {
- qprintf(quiet, "Disk image '%s' is encrypted.\n", filename);
- if (qemu_read_password(password, sizeof(password)) < 0) {
- error_report("No password given");
- goto fail;
- }
- if (bdrv_set_key(bs, password) < 0) {
- error_report("invalid password");
- goto fail;
- }
+ if (img_open_password(blk, filename, require_io, quiet) < 0) {
+ blk_unref(blk);
+ return NULL;
+ }
+ return blk;
+}
+
+
+static BlockBackend *img_open(const char *id,
+ bool image_opts,
+ const char *filename,
+ const char *fmt, int flags,
+ bool require_io, bool quiet)
+{
+ BlockBackend *blk;
+ if (image_opts) {
+ QemuOpts *opts;
+ if (fmt) {
+ error_report("--image-opts and --format are mutually exclusive");
+ return NULL;
+ }
+ opts = qemu_opts_parse_noisily(qemu_find_opts("source"),
+ filename, true);
+ if (!opts) {
+ return NULL;
+ }
+ blk = img_open_opts(id, filename, opts, flags, true, quiet);
+ } else {
+ blk = img_open_file(id, filename, fmt, flags, true, quiet);
}
return blk;
-fail:
- blk_unref(blk);
- return NULL;
}
+
static int add_old_style_options(const char *fmt, QemuOpts *opts,
const char *base_filename,
const char *base_fmt)
@@ -527,6 +596,7 @@ static int img_check(int argc, char **argv)
ImageCheck *check;
bool quiet = false;
Error *local_err = NULL;
+ bool image_opts = false;
fmt = NULL;
output = NULL;
@@ -539,6 +609,7 @@ static int img_check(int argc, char **argv)
{"repair", required_argument, 0, 'r'},
{"output", required_argument, 0, OPTION_OUTPUT},
{"object", required_argument, 0, OPTION_OBJECT},
+ {"image-opts", no_argument, 0, OPTION_IMAGE_OPTS},
{0, 0, 0, 0}
};
c = getopt_long(argc, argv, "hf:r:T:q",
@@ -583,6 +654,9 @@ static int img_check(int argc, char **argv)
return 1;
}
} break;
+ case OPTION_IMAGE_OPTS:
+ image_opts = true;
+ break;
}
}
if (optind != argc - 1) {
@@ -612,7 +686,7 @@ static int img_check(int argc, char **argv)
return 1;
}
- blk = img_open("image", filename, fmt, flags, true, quiet);
+ blk = img_open("image", image_opts, filename, fmt, flags, true, quiet);
if (!blk) {
return 1;
}
@@ -724,6 +798,7 @@ static int img_commit(int argc, char **argv)
bool progress = false, quiet = false, drop = false;
Error *local_err = NULL;
CommonBlockJobCBInfo cbi;
+ bool image_opts = false;
fmt = NULL;
cache = BDRV_DEFAULT_CACHE;
@@ -732,6 +807,7 @@ static int img_commit(int argc, char **argv)
static const struct option long_options[] = {
{"help", no_argument, 0, 'h'},
{"object", required_argument, 0, OPTION_OBJECT},
+ {"image-opts", no_argument, 0, OPTION_IMAGE_OPTS},
{0, 0, 0, 0}
};
c = getopt_long(argc, argv, "f:ht:b:dpq",
@@ -772,6 +848,9 @@ static int img_commit(int argc, char **argv)
return 1;
}
} break;
+ case OPTION_IMAGE_OPTS:
+ image_opts = true;
+ break;
}
}
@@ -799,7 +878,7 @@ static int img_commit(int argc, char **argv)
return 1;
}
- blk = img_open("image", filename, fmt, flags, true, quiet);
+ blk = img_open("image", image_opts, filename, fmt, flags, true, quiet);
if (!blk) {
return 1;
}
@@ -1049,12 +1128,14 @@ static int img_compare(int argc, char **argv)
int c, pnum;
uint64_t progress_base;
Error *local_err = NULL;
+ bool image_opts = false;
cache = BDRV_DEFAULT_CACHE;
for (;;) {
static const struct option long_options[] = {
{"help", no_argument, 0, 'h'},
{"object", required_argument, 0, OPTION_OBJECT},
+ {"image-opts", no_argument, 0, OPTION_IMAGE_OPTS},
{0, 0, 0, 0}
};
c = getopt_long(argc, argv, "hf:F:T:pqs",
@@ -1094,6 +1175,9 @@ static int img_compare(int argc, char **argv)
goto out4;
}
} break;
+ case OPTION_IMAGE_OPTS:
+ image_opts = true;
+ break;
}
}
@@ -1128,18 +1212,18 @@ static int img_compare(int argc, char **argv)
goto out3;
}
- blk1 = img_open("image_1", filename1, fmt1, flags, true, quiet);
+ blk1 = img_open("image_1", image_opts, filename1, fmt1, flags, true, quiet);
if (!blk1) {
ret = 2;
goto out3;
}
- bs1 = blk_bs(blk1);
- blk2 = img_open("image_2", filename2, fmt2, flags, true, quiet);
+ blk2 = img_open("image_2", image_opts, filename2, fmt2, flags, true, quiet);
if (!blk2) {
ret = 2;
goto out2;
}
+ bs1 = blk_bs(blk1);
bs2 = blk_bs(blk2);
buf1 = blk_blockalign(blk1, IO_BUF_SIZE);
@@ -1646,6 +1730,7 @@ static int img_convert(int argc, char **argv)
Error *local_err = NULL;
QemuOpts *sn_opts = NULL;
ImgConvertState state;
+ bool image_opts = false;
fmt = NULL;
out_fmt = "raw";
@@ -1658,6 +1743,7 @@ static int img_convert(int argc, char **argv)
static const struct option long_options[] = {
{"help", no_argument, 0, 'h'},
{"object", required_argument, 0, OPTION_OBJECT},
+ {"image-opts", no_argument, 0, OPTION_IMAGE_OPTS},
{0, 0, 0, 0}
};
c = getopt_long(argc, argv, "hf:O:B:ce6o:s:l:S:pt:T:qn",
@@ -1759,6 +1845,9 @@ static int img_convert(int argc, char **argv)
goto fail_getopt;
}
break;
+ case OPTION_IMAGE_OPTS:
+ image_opts = true;
+ break;
}
}
@@ -1775,7 +1864,6 @@ static int img_convert(int argc, char **argv)
}
qemu_progress_init(progress, 1.0);
-
bs_n = argc - optind - 1;
out_filename = bs_n >= 1 ? argv[argc - 1] : NULL;
@@ -1813,8 +1901,8 @@ static int img_convert(int argc, char **argv)
for (bs_i = 0; bs_i < bs_n; bs_i++) {
char *id = bs_n > 1 ? g_strdup_printf("source_%d", bs_i)
: g_strdup("source");
- blk[bs_i] = img_open(id, argv[optind + bs_i], fmt, src_flags,
- true, quiet);
+ blk[bs_i] = img_open(id, image_opts, argv[optind + bs_i],
+ fmt, src_flags, true, quiet);
g_free(id);
if (!blk[bs_i]) {
ret = -1;
@@ -1955,7 +2043,13 @@ static int img_convert(int argc, char **argv)
goto out;
}
- out_blk = img_open("target", out_filename, out_fmt, flags, true, quiet);
+ /* XXX we should allow --image-opts to trigger use of
+ * img_open() here, but then we have trouble with
+ * the bdrv_create() call which takes different params.
+ * Not critical right now, so fix can wait...
+ */
+ out_blk = img_open_file("target", out_filename,
+ out_fmt, flags, true, quiet);
if (!out_blk) {
ret = -1;
goto out;
@@ -2121,7 +2215,8 @@ static gboolean str_equal_func(gconstpointer a, gconstpointer b)
* image file. If there was an error a message will have been printed to
* stderr.
*/
-static ImageInfoList *collect_image_info_list(const char *filename,
+static ImageInfoList *collect_image_info_list(bool image_opts,
+ const char *filename,
const char *fmt,
bool chain)
{
@@ -2145,8 +2240,9 @@ static ImageInfoList *collect_image_info_list(const char *filename,
}
g_hash_table_insert(filenames, (gpointer)filename, NULL);
- blk = img_open("image", filename, fmt,
- BDRV_O_FLAGS | BDRV_O_NO_BACKING, false, false);
+ blk = img_open("image", image_opts, filename, fmt,
+ BDRV_O_FLAGS | BDRV_O_NO_BACKING,
+ false, false);
if (!blk) {
goto err;
}
@@ -2198,6 +2294,7 @@ static int img_info(int argc, char **argv)
const char *filename, *fmt, *output;
ImageInfoList *list;
Error *local_err = NULL;
+ bool image_opts = false;
fmt = NULL;
output = NULL;
@@ -2209,6 +2306,7 @@ static int img_info(int argc, char **argv)
{"output", required_argument, 0, OPTION_OUTPUT},
{"backing-chain", no_argument, 0, OPTION_BACKING_CHAIN},
{"object", required_argument, 0, OPTION_OBJECT},
+ {"image-opts", no_argument, 0, OPTION_IMAGE_OPTS},
{0, 0, 0, 0}
};
c = getopt_long(argc, argv, "f:h",
@@ -2238,6 +2336,9 @@ static int img_info(int argc, char **argv)
return 1;
}
} break;
+ case OPTION_IMAGE_OPTS:
+ image_opts = true;
+ break;
}
}
if (optind != argc - 1) {
@@ -2261,7 +2362,7 @@ static int img_info(int argc, char **argv)
return 1;
}
- list = collect_image_info_list(filename, fmt, chain);
+ list = collect_image_info_list(image_opts, filename, fmt, chain);
if (!list) {
return 1;
}
@@ -2407,6 +2508,7 @@ static int img_map(int argc, char **argv)
MapEntry curr = { .length = 0 }, next;
int ret = 0;
Error *local_err = NULL;
+ bool image_opts = false;
fmt = NULL;
output = NULL;
@@ -2417,6 +2519,7 @@ static int img_map(int argc, char **argv)
{"format", required_argument, 0, 'f'},
{"output", required_argument, 0, OPTION_OUTPUT},
{"object", required_argument, 0, OPTION_OBJECT},
+ {"image-opts", no_argument, 0, OPTION_IMAGE_OPTS},
{0, 0, 0, 0}
};
c = getopt_long(argc, argv, "f:h",
@@ -2443,6 +2546,9 @@ static int img_map(int argc, char **argv)
return 1;
}
} break;
+ case OPTION_IMAGE_OPTS:
+ image_opts = true;
+ break;
}
}
if (optind != argc - 1) {
@@ -2466,7 +2572,8 @@ static int img_map(int argc, char **argv)
return 1;
}
- blk = img_open("image", filename, fmt, BDRV_O_FLAGS, true, false);
+ blk = img_open("image", image_opts, filename, fmt,
+ BDRV_O_FLAGS, true, false);
if (!blk) {
return 1;
}
@@ -2528,6 +2635,7 @@ static int img_snapshot(int argc, char **argv)
qemu_timeval tv;
bool quiet = false;
Error *err = NULL;
+ bool image_opts = false;
bdrv_oflags = BDRV_O_FLAGS | BDRV_O_RDWR;
/* Parse commandline parameters */
@@ -2535,6 +2643,7 @@ static int img_snapshot(int argc, char **argv)
static const struct option long_options[] = {
{"help", no_argument, 0, 'h'},
{"object", required_argument, 0, OPTION_OBJECT},
+ {"image-opts", no_argument, 0, OPTION_IMAGE_OPTS},
{0, 0, 0, 0}
};
c = getopt_long(argc, argv, "la:c:d:hq",
@@ -2590,6 +2699,9 @@ static int img_snapshot(int argc, char **argv)
return 1;
}
} break;
+ case OPTION_IMAGE_OPTS:
+ image_opts = true;
+ break;
}
}
@@ -2606,7 +2718,8 @@ static int img_snapshot(int argc, char **argv)
}
/* Open the image */
- blk = img_open("image", filename, NULL, bdrv_oflags, true, quiet);
+ blk = img_open("image", image_opts, filename, NULL,
+ bdrv_oflags, true, quiet);
if (!blk) {
return 1;
}
@@ -2670,6 +2783,7 @@ static int img_rebase(int argc, char **argv)
int progress = 0;
bool quiet = false;
Error *local_err = NULL;
+ bool image_opts = false;
/* Parse commandline parameters */
fmt = NULL;
@@ -2681,6 +2795,7 @@ static int img_rebase(int argc, char **argv)
static const struct option long_options[] = {
{"help", no_argument, 0, 'h'},
{"object", required_argument, 0, OPTION_OBJECT},
+ {"image-opts", no_argument, 0, OPTION_IMAGE_OPTS},
{0, 0, 0, 0}
};
c = getopt_long(argc, argv, "hf:F:b:upt:T:q",
@@ -2725,6 +2840,9 @@ static int img_rebase(int argc, char **argv)
return 1;
}
} break;
+ case OPTION_IMAGE_OPTS:
+ image_opts = true;
+ break;
}
}
@@ -2770,7 +2888,7 @@ static int img_rebase(int argc, char **argv)
* Ignore the old backing file for unsafe rebase in case we want to correct
* the reference to a renamed or moved backing file.
*/
- blk = img_open("image", filename, fmt, flags, true, quiet);
+ blk = img_open("image", image_opts, filename, fmt, flags, true, quiet);
if (!blk) {
ret = -1;
goto out;
@@ -3022,6 +3140,7 @@ static int img_resize(int argc, char **argv)
}
},
};
+ bool image_opts = false;
/* Remove size from argv manually so that negative numbers are not treated
* as options by getopt. */
@@ -3038,6 +3157,7 @@ static int img_resize(int argc, char **argv)
static const struct option long_options[] = {
{"help", no_argument, 0, 'h'},
{"object", required_argument, 0, OPTION_OBJECT},
+ {"image-opts", no_argument, 0, OPTION_IMAGE_OPTS},
{0, 0, 0, 0}
};
c = getopt_long(argc, argv, "f:hq",
@@ -3064,6 +3184,9 @@ static int img_resize(int argc, char **argv)
return 1;
}
} break;
+ case OPTION_IMAGE_OPTS:
+ image_opts = true;
+ break;
}
}
if (optind != argc - 1) {
@@ -3105,8 +3228,8 @@ static int img_resize(int argc, char **argv)
n = qemu_opt_get_size(param, BLOCK_OPT_SIZE, 0);
qemu_opts_del(param);
- blk = img_open("image", filename, fmt, BDRV_O_FLAGS | BDRV_O_RDWR,
- true, quiet);
+ blk = img_open("image", image_opts, filename, fmt,
+ BDRV_O_FLAGS | BDRV_O_RDWR, true, quiet);
if (!blk) {
ret = -1;
goto out;
@@ -3166,12 +3289,14 @@ static int img_amend(int argc, char **argv)
BlockBackend *blk = NULL;
BlockDriverState *bs = NULL;
Error *local_err = NULL;
+ bool image_opts = false;
cache = BDRV_DEFAULT_CACHE;
for (;;) {
static const struct option long_options[] = {
{"help", no_argument, 0, 'h'},
{"object", required_argument, 0, OPTION_OBJECT},
+ {"image-opts", no_argument, 0, OPTION_IMAGE_OPTS},
{0, 0, 0, 0}
};
c = getopt_long(argc, argv, "ho:f:t:pq",
@@ -3219,6 +3344,9 @@ static int img_amend(int argc, char **argv)
goto out_no_progress;
}
break;
+ case OPTION_IMAGE_OPTS:
+ image_opts = true;
+ break;
}
}
@@ -3260,7 +3388,7 @@ static int img_amend(int argc, char **argv)
goto out;
}
- blk = img_open("image", filename, fmt, flags, true, quiet);
+ blk = img_open("image", image_opts, filename, fmt, flags, true, quiet);
if (!blk) {
ret = -1;
goto out;
@@ -3358,6 +3486,7 @@ int main(int argc, char **argv)
cmdname = argv[1];
qemu_add_opts(&qemu_object_opts);
+ qemu_add_opts(&qemu_source_opts);
/* find the command */
for (cmd = img_cmds; cmd->name != NULL; cmd++) {
diff --git a/qemu-img.texi b/qemu-img.texi
index 9e47543..afaebdd 100644
--- a/qemu-img.texi
+++ b/qemu-img.texi
@@ -32,6 +32,12 @@ page for a description of the object properties. The most common object
type is a @code{secret}, which is used to supply passwords and/or encryption
keys.
+@item --image-opts
+
+Indicates that the @var{filename} parameter is to be interpreted as a
+full option string, not a plain filename. This parameter is mutually
+exclusive with the @var{-f} and @var{-F} parameters.
+
@item fmt
is the disk image format. It is guessed automatically in most cases. See below
for a description of the supported disk formats.
--
1.8.3.1
^ permalink raw reply related [flat|nested] 36+ messages in thread
* [Qemu-devel] [PULL 10/34] qemu-nbd: don't overlap long option values with short options
2016-02-22 16:32 [Qemu-devel] [PULL 00/34] Block layer patches Kevin Wolf
` (8 preceding siblings ...)
2016-02-22 16:32 ` [Qemu-devel] [PULL 09/34] qemu-img: " Kevin Wolf
@ 2016-02-22 16:32 ` Kevin Wolf
2016-02-22 16:32 ` [Qemu-devel] [PULL 11/34] qemu-nbd: use no_argument/required_argument constants Kevin Wolf
` (24 subsequent siblings)
34 siblings, 0 replies; 36+ messages in thread
From: Kevin Wolf @ 2016-02-22 16:32 UTC (permalink / raw)
To: qemu-block; +Cc: kwolf, qemu-devel
From: "Daniel P. Berrange" <berrange@redhat.com>
When defining values for long options, the normal practice is
to start numbering from 256, to avoid overlap with the range
of valid values for short options.
Reviewed-by: Eric Blake <eblake@redhat.com>
Signed-off-by: Daniel P. Berrange <berrange@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
---
qemu-nbd.c | 14 +++++++-------
1 file changed, 7 insertions(+), 7 deletions(-)
diff --git a/qemu-nbd.c b/qemu-nbd.c
index 424e71f..9ccfc13 100644
--- a/qemu-nbd.c
+++ b/qemu-nbd.c
@@ -37,13 +37,13 @@
#include <pthread.h>
#define SOCKET_PATH "/var/lock/qemu-nbd-%s"
-#define QEMU_NBD_OPT_CACHE 1
-#define QEMU_NBD_OPT_AIO 2
-#define QEMU_NBD_OPT_DISCARD 3
-#define QEMU_NBD_OPT_DETECT_ZEROES 4
-#define QEMU_NBD_OPT_OBJECT 5
-#define QEMU_NBD_OPT_TLSCREDS 6
-#define QEMU_NBD_OPT_IMAGE_OPTS 7
+#define QEMU_NBD_OPT_CACHE 256
+#define QEMU_NBD_OPT_AIO 257
+#define QEMU_NBD_OPT_DISCARD 258
+#define QEMU_NBD_OPT_DETECT_ZEROES 259
+#define QEMU_NBD_OPT_OBJECT 260
+#define QEMU_NBD_OPT_TLSCREDS 261
+#define QEMU_NBD_OPT_IMAGE_OPTS 262
static NBDExport *exp;
static bool newproto;
--
1.8.3.1
^ permalink raw reply related [flat|nested] 36+ messages in thread
* [Qemu-devel] [PULL 11/34] qemu-nbd: use no_argument/required_argument constants
2016-02-22 16:32 [Qemu-devel] [PULL 00/34] Block layer patches Kevin Wolf
` (9 preceding siblings ...)
2016-02-22 16:32 ` [Qemu-devel] [PULL 10/34] qemu-nbd: don't overlap long option values with short options Kevin Wolf
@ 2016-02-22 16:32 ` Kevin Wolf
2016-02-22 16:32 ` [Qemu-devel] [PULL 12/34] qemu-io: " Kevin Wolf
` (23 subsequent siblings)
34 siblings, 0 replies; 36+ messages in thread
From: Kevin Wolf @ 2016-02-22 16:32 UTC (permalink / raw)
To: qemu-block; +Cc: kwolf, qemu-devel
From: "Daniel P. Berrange" <berrange@redhat.com>
When declaring the 'struct option' array, use the standard
constants no_argument/required_argument, instead of magic
values 0 and 1.
Reviewed-by: Eric Blake <eblake@redhat.com>
Signed-off-by: Daniel P. Berrange <berrange@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
---
qemu-nbd.c | 51 ++++++++++++++++++++++++++-------------------------
1 file changed, 26 insertions(+), 25 deletions(-)
diff --git a/qemu-nbd.c b/qemu-nbd.c
index 9ccfc13..efc427c 100644
--- a/qemu-nbd.c
+++ b/qemu-nbd.c
@@ -463,31 +463,32 @@ int main(int argc, char **argv)
const char *sn_id_or_name = NULL;
const char *sopt = "hVb:o:p:rsnP:c:dvk:e:f:tl:x:";
struct option lopt[] = {
- { "help", 0, NULL, 'h' },
- { "version", 0, NULL, 'V' },
- { "bind", 1, NULL, 'b' },
- { "port", 1, NULL, 'p' },
- { "socket", 1, NULL, 'k' },
- { "offset", 1, NULL, 'o' },
- { "read-only", 0, NULL, 'r' },
- { "partition", 1, NULL, 'P' },
- { "connect", 1, NULL, 'c' },
- { "disconnect", 0, NULL, 'd' },
- { "snapshot", 0, NULL, 's' },
- { "load-snapshot", 1, NULL, 'l' },
- { "nocache", 0, NULL, 'n' },
- { "cache", 1, NULL, QEMU_NBD_OPT_CACHE },
- { "aio", 1, NULL, QEMU_NBD_OPT_AIO },
- { "discard", 1, NULL, QEMU_NBD_OPT_DISCARD },
- { "detect-zeroes", 1, NULL, QEMU_NBD_OPT_DETECT_ZEROES },
- { "shared", 1, NULL, 'e' },
- { "format", 1, NULL, 'f' },
- { "persistent", 0, NULL, 't' },
- { "verbose", 0, NULL, 'v' },
- { "object", 1, NULL, QEMU_NBD_OPT_OBJECT },
- { "export-name", 1, NULL, 'x' },
- { "tls-creds", 1, NULL, QEMU_NBD_OPT_TLSCREDS },
- { "image-opts", 0, NULL, QEMU_NBD_OPT_IMAGE_OPTS },
+ { "help", no_argument, NULL, 'h' },
+ { "version", no_argument, NULL, 'V' },
+ { "bind", required_argument, NULL, 'b' },
+ { "port", required_argument, NULL, 'p' },
+ { "socket", required_argument, NULL, 'k' },
+ { "offset", required_argument, NULL, 'o' },
+ { "read-only", no_argument, NULL, 'r' },
+ { "partition", required_argument, NULL, 'P' },
+ { "connect", required_argument, NULL, 'c' },
+ { "disconnect", no_argument, NULL, 'd' },
+ { "snapshot", no_argument, NULL, 's' },
+ { "load-snapshot", required_argument, NULL, 'l' },
+ { "nocache", no_argument, NULL, 'n' },
+ { "cache", required_argument, NULL, QEMU_NBD_OPT_CACHE },
+ { "aio", required_argument, NULL, QEMU_NBD_OPT_AIO },
+ { "discard", required_argument, NULL, QEMU_NBD_OPT_DISCARD },
+ { "detect-zeroes", required_argument, NULL,
+ QEMU_NBD_OPT_DETECT_ZEROES },
+ { "shared", required_argument, NULL, 'e' },
+ { "format", required_argument, NULL, 'f' },
+ { "persistent", no_argument, NULL, 't' },
+ { "verbose", no_argument, NULL, 'v' },
+ { "object", required_argument, NULL, QEMU_NBD_OPT_OBJECT },
+ { "export-name", required_argument, NULL, 'x' },
+ { "tls-creds", required_argument, NULL, QEMU_NBD_OPT_TLSCREDS },
+ { "image-opts", no_argument, NULL, QEMU_NBD_OPT_IMAGE_OPTS },
{ NULL, 0, NULL, 0 }
};
int ch;
--
1.8.3.1
^ permalink raw reply related [flat|nested] 36+ messages in thread
* [Qemu-devel] [PULL 12/34] qemu-io: use no_argument/required_argument constants
2016-02-22 16:32 [Qemu-devel] [PULL 00/34] Block layer patches Kevin Wolf
` (10 preceding siblings ...)
2016-02-22 16:32 ` [Qemu-devel] [PULL 11/34] qemu-nbd: use no_argument/required_argument constants Kevin Wolf
@ 2016-02-22 16:32 ` Kevin Wolf
2016-02-22 16:32 ` [Qemu-devel] [PULL 13/34] block migration: Activate image on destination before writing to it Kevin Wolf
` (22 subsequent siblings)
34 siblings, 0 replies; 36+ messages in thread
From: Kevin Wolf @ 2016-02-22 16:32 UTC (permalink / raw)
To: qemu-block; +Cc: kwolf, qemu-devel
From: "Daniel P. Berrange" <berrange@redhat.com>
When declaring the 'struct option' array, use the standard
constants no_argument/required_argument, instead of magic
values 0 and 1.
Reviewed-by: Eric Blake <eblake@redhat.com>
Signed-off-by: Daniel P. Berrange <berrange@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
---
qemu-io.c | 30 +++++++++++++++---------------
1 file changed, 15 insertions(+), 15 deletions(-)
diff --git a/qemu-io.c b/qemu-io.c
index 4a0d5f0..8c31257 100644
--- a/qemu-io.c
+++ b/qemu-io.c
@@ -407,21 +407,21 @@ int main(int argc, char **argv)
int readonly = 0;
const char *sopt = "hVc:d:f:rsnmgkt:T:";
const struct option lopt[] = {
- { "help", 0, NULL, 'h' },
- { "version", 0, NULL, 'V' },
- { "offset", 1, NULL, 'o' },
- { "cmd", 1, NULL, 'c' },
- { "format", 1, NULL, 'f' },
- { "read-only", 0, NULL, 'r' },
- { "snapshot", 0, NULL, 's' },
- { "nocache", 0, NULL, 'n' },
- { "misalign", 0, NULL, 'm' },
- { "native-aio", 0, NULL, 'k' },
- { "discard", 1, NULL, 'd' },
- { "cache", 1, NULL, 't' },
- { "trace", 1, NULL, 'T' },
- { "object", 1, NULL, OPTION_OBJECT },
- { "image-opts", 0, NULL, OPTION_IMAGE_OPTS },
+ { "help", no_argument, NULL, 'h' },
+ { "version", no_argument, NULL, 'V' },
+ { "offset", required_argument, NULL, 'o' },
+ { "cmd", required_argument, NULL, 'c' },
+ { "format", required_argument, NULL, 'f' },
+ { "read-only", no_argument, NULL, 'r' },
+ { "snapshot", no_argument, NULL, 's' },
+ { "nocache", no_argument, NULL, 'n' },
+ { "misalign", no_argument, NULL, 'm' },
+ { "native-aio", no_argument, NULL, 'k' },
+ { "discard", required_argument, NULL, 'd' },
+ { "cache", required_argument, NULL, 't' },
+ { "trace", required_argument, NULL, 'T' },
+ { "object", required_argument, NULL, OPTION_OBJECT },
+ { "image-opts", no_argument, NULL, OPTION_IMAGE_OPTS },
{ NULL, 0, NULL, 0 }
};
int c;
--
1.8.3.1
^ permalink raw reply related [flat|nested] 36+ messages in thread
* [Qemu-devel] [PULL 13/34] block migration: Activate image on destination before writing to it
2016-02-22 16:32 [Qemu-devel] [PULL 00/34] Block layer patches Kevin Wolf
` (11 preceding siblings ...)
2016-02-22 16:32 ` [Qemu-devel] [PULL 12/34] qemu-io: " Kevin Wolf
@ 2016-02-22 16:32 ` Kevin Wolf
2016-02-22 16:32 ` [Qemu-devel] [PULL 14/34] throttle: Make throttle_compute_timer() static Kevin Wolf
` (21 subsequent siblings)
34 siblings, 0 replies; 36+ messages in thread
From: Kevin Wolf @ 2016-02-22 16:32 UTC (permalink / raw)
To: qemu-block; +Cc: kwolf, qemu-devel
When using 'migrate -b', we must make sure to take ownership of the
image before writing to it. Otherwise metadata would be thrown away on
migration completion; this was caught by the assertions introduced in
commit 09e0c771.
Reported-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
---
migration/block.c | 7 +++++++
1 file changed, 7 insertions(+)
diff --git a/migration/block.c b/migration/block.c
index a444058..3a8330a 100644
--- a/migration/block.c
+++ b/migration/block.c
@@ -786,6 +786,7 @@ static int block_load(QEMUFile *f, void *opaque, int version_id)
int64_t addr;
BlockDriverState *bs, *bs_prev = NULL;
BlockBackend *blk;
+ Error *local_err = NULL;
uint8_t *buf;
int64_t total_sectors = 0;
int nr_sectors;
@@ -824,6 +825,12 @@ static int block_load(QEMUFile *f, void *opaque, int version_id)
device_name);
return -EINVAL;
}
+
+ bdrv_invalidate_cache(bs, &local_err);
+ if (local_err) {
+ error_report_err(local_err);
+ return -EINVAL;
+ }
}
if (total_sectors - addr < BDRV_SECTORS_PER_DIRTY_CHUNK) {
--
1.8.3.1
^ permalink raw reply related [flat|nested] 36+ messages in thread
* [Qemu-devel] [PULL 14/34] throttle: Make throttle_compute_timer() static
2016-02-22 16:32 [Qemu-devel] [PULL 00/34] Block layer patches Kevin Wolf
` (12 preceding siblings ...)
2016-02-22 16:32 ` [Qemu-devel] [PULL 13/34] block migration: Activate image on destination before writing to it Kevin Wolf
@ 2016-02-22 16:32 ` Kevin Wolf
2016-02-22 16:32 ` [Qemu-devel] [PULL 15/34] throttle: Make throttle_conflicting() set errp Kevin Wolf
` (20 subsequent siblings)
34 siblings, 0 replies; 36+ messages in thread
From: Kevin Wolf @ 2016-02-22 16:32 UTC (permalink / raw)
To: qemu-block; +Cc: kwolf, qemu-devel
From: Alberto Garcia <berto@igalia.com>
This function is only used internally in throttle.c
Signed-off-by: Alberto Garcia <berto@igalia.com>
Reviewed-by: Kevin Wolf <kwolf@redhat.com>
Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
---
include/qemu/throttle.h | 6 ------
util/throttle.c | 8 ++++----
2 files changed, 4 insertions(+), 10 deletions(-)
diff --git a/include/qemu/throttle.h b/include/qemu/throttle.h
index d0c98ed..52c98d9 100644
--- a/include/qemu/throttle.h
+++ b/include/qemu/throttle.h
@@ -84,12 +84,6 @@ void throttle_leak_bucket(LeakyBucket *bkt, int64_t delta);
int64_t throttle_compute_wait(LeakyBucket *bkt);
-/* expose timer computation function for unit tests */
-bool throttle_compute_timer(ThrottleState *ts,
- bool is_write,
- int64_t now,
- int64_t *next_timestamp);
-
/* init/destroy cycle */
void throttle_init(ThrottleState *ts);
diff --git a/util/throttle.c b/util/throttle.c
index 2f9b23d..c21043a 100644
--- a/util/throttle.c
+++ b/util/throttle.c
@@ -137,10 +137,10 @@ static int64_t throttle_compute_wait_for(ThrottleState *ts,
* @next_timestamp: the resulting timer
* @ret: true if a timer must be set
*/
-bool throttle_compute_timer(ThrottleState *ts,
- bool is_write,
- int64_t now,
- int64_t *next_timestamp)
+static bool throttle_compute_timer(ThrottleState *ts,
+ bool is_write,
+ int64_t now,
+ int64_t *next_timestamp)
{
int64_t wait;
--
1.8.3.1
^ permalink raw reply related [flat|nested] 36+ messages in thread
* [Qemu-devel] [PULL 15/34] throttle: Make throttle_conflicting() set errp
2016-02-22 16:32 [Qemu-devel] [PULL 00/34] Block layer patches Kevin Wolf
` (13 preceding siblings ...)
2016-02-22 16:32 ` [Qemu-devel] [PULL 14/34] throttle: Make throttle_compute_timer() static Kevin Wolf
@ 2016-02-22 16:32 ` Kevin Wolf
2016-02-22 16:32 ` [Qemu-devel] [PULL 16/34] throttle: Make throttle_max_is_missing_limit() " Kevin Wolf
` (19 subsequent siblings)
34 siblings, 0 replies; 36+ messages in thread
From: Kevin Wolf @ 2016-02-22 16:32 UTC (permalink / raw)
To: qemu-block; +Cc: kwolf, qemu-devel
From: Alberto Garcia <berto@igalia.com>
The caller does not need to set it, and this will allow us to refactor
this function later.
Signed-off-by: Alberto Garcia <berto@igalia.com>
Reviewed-by: Kevin Wolf <kwolf@redhat.com>
Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
---
blockdev.c | 4 +---
include/qemu/throttle.h | 2 +-
tests/test-throttle.c | 12 ++++++------
util/throttle.c | 11 +++++++++--
4 files changed, 17 insertions(+), 12 deletions(-)
diff --git a/blockdev.c b/blockdev.c
index ed97d8a..14e89de 100644
--- a/blockdev.c
+++ b/blockdev.c
@@ -345,9 +345,7 @@ static bool parse_stats_intervals(BlockAcctStats *stats, QList *intervals,
static bool check_throttle_config(ThrottleConfig *cfg, Error **errp)
{
- if (throttle_conflicting(cfg)) {
- error_setg(errp, "bps/iops/max total values and read/write values"
- " cannot be used at the same time");
+ if (throttle_conflicting(cfg, errp)) {
return false;
}
diff --git a/include/qemu/throttle.h b/include/qemu/throttle.h
index 52c98d9..69cf171 100644
--- a/include/qemu/throttle.h
+++ b/include/qemu/throttle.h
@@ -106,7 +106,7 @@ bool throttle_timers_are_initialized(ThrottleTimers *tt);
/* configuration */
bool throttle_enabled(ThrottleConfig *cfg);
-bool throttle_conflicting(ThrottleConfig *cfg);
+bool throttle_conflicting(ThrottleConfig *cfg, Error **errp);
bool throttle_is_valid(ThrottleConfig *cfg);
diff --git a/tests/test-throttle.c b/tests/test-throttle.c
index 858f1aa..579b8af 100644
--- a/tests/test-throttle.c
+++ b/tests/test-throttle.c
@@ -255,31 +255,31 @@ static void test_conflicts_for_one_set(bool is_max,
int write)
{
memset(&cfg, 0, sizeof(cfg));
- g_assert(!throttle_conflicting(&cfg));
+ g_assert(!throttle_conflicting(&cfg, NULL));
set_cfg_value(is_max, total, 1);
set_cfg_value(is_max, read, 1);
- g_assert(throttle_conflicting(&cfg));
+ g_assert(throttle_conflicting(&cfg, NULL));
memset(&cfg, 0, sizeof(cfg));
set_cfg_value(is_max, total, 1);
set_cfg_value(is_max, write, 1);
- g_assert(throttle_conflicting(&cfg));
+ g_assert(throttle_conflicting(&cfg, NULL));
memset(&cfg, 0, sizeof(cfg));
set_cfg_value(is_max, total, 1);
set_cfg_value(is_max, read, 1);
set_cfg_value(is_max, write, 1);
- g_assert(throttle_conflicting(&cfg));
+ g_assert(throttle_conflicting(&cfg, NULL));
memset(&cfg, 0, sizeof(cfg));
set_cfg_value(is_max, total, 1);
- g_assert(!throttle_conflicting(&cfg));
+ g_assert(!throttle_conflicting(&cfg, NULL));
memset(&cfg, 0, sizeof(cfg));
set_cfg_value(is_max, read, 1);
set_cfg_value(is_max, write, 1);
- g_assert(!throttle_conflicting(&cfg));
+ g_assert(!throttle_conflicting(&cfg, NULL));
}
static void test_conflicting_config(void)
diff --git a/util/throttle.c b/util/throttle.c
index c21043a..564e132 100644
--- a/util/throttle.c
+++ b/util/throttle.c
@@ -252,8 +252,9 @@ bool throttle_enabled(ThrottleConfig *cfg)
*
* @cfg: the throttling configuration to inspect
* @ret: true if any conflict detected else false
+ * @errp: error object
*/
-bool throttle_conflicting(ThrottleConfig *cfg)
+bool throttle_conflicting(ThrottleConfig *cfg, Error **errp)
{
bool bps_flag, ops_flag;
bool bps_max_flag, ops_max_flag;
@@ -274,7 +275,13 @@ bool throttle_conflicting(ThrottleConfig *cfg)
(cfg->buckets[THROTTLE_OPS_READ].max ||
cfg->buckets[THROTTLE_OPS_WRITE].max);
- return bps_flag || ops_flag || bps_max_flag || ops_max_flag;
+ if (bps_flag || ops_flag || bps_max_flag || ops_max_flag) {
+ error_setg(errp, "bps/iops/max total values and read/write values"
+ " cannot be used at the same time");
+ return true;
+ }
+
+ return false;
}
/* check if a throttling configuration is valid
--
1.8.3.1
^ permalink raw reply related [flat|nested] 36+ messages in thread
* [Qemu-devel] [PULL 16/34] throttle: Make throttle_max_is_missing_limit() set errp
2016-02-22 16:32 [Qemu-devel] [PULL 00/34] Block layer patches Kevin Wolf
` (14 preceding siblings ...)
2016-02-22 16:32 ` [Qemu-devel] [PULL 15/34] throttle: Make throttle_conflicting() set errp Kevin Wolf
@ 2016-02-22 16:32 ` Kevin Wolf
2016-02-22 16:32 ` [Qemu-devel] [PULL 17/34] throttle: Make throttle_is_valid() " Kevin Wolf
` (18 subsequent siblings)
34 siblings, 0 replies; 36+ messages in thread
From: Kevin Wolf @ 2016-02-22 16:32 UTC (permalink / raw)
To: qemu-block; +Cc: kwolf, qemu-devel
From: Alberto Garcia <berto@igalia.com>
The caller does not need to set it, and this will allow us to refactor
this function later.
Signed-off-by: Alberto Garcia <berto@igalia.com>
Reviewed-by: Kevin Wolf <kwolf@redhat.com>
Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
---
blockdev.c | 4 +---
include/qemu/throttle.h | 2 +-
tests/test-throttle.c | 6 +++---
util/throttle.c | 5 ++++-
4 files changed, 9 insertions(+), 8 deletions(-)
diff --git a/blockdev.c b/blockdev.c
index 14e89de..52aabf7 100644
--- a/blockdev.c
+++ b/blockdev.c
@@ -355,9 +355,7 @@ static bool check_throttle_config(ThrottleConfig *cfg, Error **errp)
return false;
}
- if (throttle_max_is_missing_limit(cfg)) {
- error_setg(errp, "bps_max/iops_max require corresponding"
- " bps/iops values");
+ if (throttle_max_is_missing_limit(cfg, errp)) {
return false;
}
diff --git a/include/qemu/throttle.h b/include/qemu/throttle.h
index 69cf171..03bdec0 100644
--- a/include/qemu/throttle.h
+++ b/include/qemu/throttle.h
@@ -110,7 +110,7 @@ bool throttle_conflicting(ThrottleConfig *cfg, Error **errp);
bool throttle_is_valid(ThrottleConfig *cfg);
-bool throttle_max_is_missing_limit(ThrottleConfig *cfg);
+bool throttle_max_is_missing_limit(ThrottleConfig *cfg, Error **errp);
void throttle_config(ThrottleState *ts,
ThrottleTimers *tt,
diff --git a/tests/test-throttle.c b/tests/test-throttle.c
index 579b8af..49bd3bc 100644
--- a/tests/test-throttle.c
+++ b/tests/test-throttle.c
@@ -338,15 +338,15 @@ static void test_max_is_missing_limit(void)
memset(&cfg, 0, sizeof(cfg));
cfg.buckets[i].max = 100;
cfg.buckets[i].avg = 0;
- g_assert(throttle_max_is_missing_limit(&cfg));
+ g_assert(throttle_max_is_missing_limit(&cfg, NULL));
cfg.buckets[i].max = 0;
cfg.buckets[i].avg = 0;
- g_assert(!throttle_max_is_missing_limit(&cfg));
+ g_assert(!throttle_max_is_missing_limit(&cfg, NULL));
cfg.buckets[i].max = 0;
cfg.buckets[i].avg = 100;
- g_assert(!throttle_max_is_missing_limit(&cfg));
+ g_assert(!throttle_max_is_missing_limit(&cfg, NULL));
}
}
diff --git a/util/throttle.c b/util/throttle.c
index 564e132..77010b4 100644
--- a/util/throttle.c
+++ b/util/throttle.c
@@ -306,13 +306,16 @@ bool throttle_is_valid(ThrottleConfig *cfg)
/* check if bps_max/iops_max is used without bps/iops
* @cfg: the throttling configuration to inspect
+ * @errp: error object
*/
-bool throttle_max_is_missing_limit(ThrottleConfig *cfg)
+bool throttle_max_is_missing_limit(ThrottleConfig *cfg, Error **errp)
{
int i;
for (i = 0; i < BUCKETS_COUNT; i++) {
if (cfg->buckets[i].max && !cfg->buckets[i].avg) {
+ error_setg(errp, "bps_max/iops_max require corresponding"
+ " bps/iops values");
return true;
}
}
--
1.8.3.1
^ permalink raw reply related [flat|nested] 36+ messages in thread
* [Qemu-devel] [PULL 17/34] throttle: Make throttle_is_valid() set errp
2016-02-22 16:32 [Qemu-devel] [PULL 00/34] Block layer patches Kevin Wolf
` (15 preceding siblings ...)
2016-02-22 16:32 ` [Qemu-devel] [PULL 16/34] throttle: Make throttle_max_is_missing_limit() " Kevin Wolf
@ 2016-02-22 16:32 ` Kevin Wolf
2016-02-22 16:32 ` [Qemu-devel] [PULL 18/34] throttle: Set always an average value when setting a maximum value Kevin Wolf
` (17 subsequent siblings)
34 siblings, 0 replies; 36+ messages in thread
From: Kevin Wolf @ 2016-02-22 16:32 UTC (permalink / raw)
To: qemu-block; +Cc: kwolf, qemu-devel
From: Alberto Garcia <berto@igalia.com>
The caller does not need to set it, and this will allow us to refactor
this function later.
Signed-off-by: Alberto Garcia <berto@igalia.com>
Reviewed-by: Kevin Wolf <kwolf@redhat.com>
Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
---
blockdev.c | 4 +---
include/qemu/throttle.h | 2 +-
tests/test-throttle.c | 2 +-
util/throttle.c | 5 ++++-
4 files changed, 7 insertions(+), 6 deletions(-)
diff --git a/blockdev.c b/blockdev.c
index 52aabf7..11a3139 100644
--- a/blockdev.c
+++ b/blockdev.c
@@ -349,9 +349,7 @@ static bool check_throttle_config(ThrottleConfig *cfg, Error **errp)
return false;
}
- if (!throttle_is_valid(cfg)) {
- error_setg(errp, "bps/iops/max values must be within [0, %lld]",
- THROTTLE_VALUE_MAX);
+ if (!throttle_is_valid(cfg, errp)) {
return false;
}
diff --git a/include/qemu/throttle.h b/include/qemu/throttle.h
index 03bdec0..ecae621 100644
--- a/include/qemu/throttle.h
+++ b/include/qemu/throttle.h
@@ -108,7 +108,7 @@ bool throttle_enabled(ThrottleConfig *cfg);
bool throttle_conflicting(ThrottleConfig *cfg, Error **errp);
-bool throttle_is_valid(ThrottleConfig *cfg);
+bool throttle_is_valid(ThrottleConfig *cfg, Error **errp);
bool throttle_max_is_missing_limit(ThrottleConfig *cfg, Error **errp);
diff --git a/tests/test-throttle.c b/tests/test-throttle.c
index 49bd3bc..0e7c7e0 100644
--- a/tests/test-throttle.c
+++ b/tests/test-throttle.c
@@ -315,7 +315,7 @@ static void test_is_valid_for_value(int value, bool should_be_valid)
for (index = 0; index < BUCKETS_COUNT; index++) {
memset(&cfg, 0, sizeof(cfg));
set_cfg_value(is_max, index, value);
- g_assert(throttle_is_valid(&cfg) == should_be_valid);
+ g_assert(throttle_is_valid(&cfg, NULL) == should_be_valid);
}
}
}
diff --git a/util/throttle.c b/util/throttle.c
index 77010b4..9046dd8 100644
--- a/util/throttle.c
+++ b/util/throttle.c
@@ -287,8 +287,9 @@ bool throttle_conflicting(ThrottleConfig *cfg, Error **errp)
/* check if a throttling configuration is valid
* @cfg: the throttling configuration to inspect
* @ret: true if valid else false
+ * @errp: error object
*/
-bool throttle_is_valid(ThrottleConfig *cfg)
+bool throttle_is_valid(ThrottleConfig *cfg, Error **errp)
{
int i;
@@ -297,6 +298,8 @@ bool throttle_is_valid(ThrottleConfig *cfg)
cfg->buckets[i].max < 0 ||
cfg->buckets[i].avg > THROTTLE_VALUE_MAX ||
cfg->buckets[i].max > THROTTLE_VALUE_MAX) {
+ error_setg(errp, "bps/iops/max values must be within [0, %lld]",
+ THROTTLE_VALUE_MAX);
return false;
}
}
--
1.8.3.1
^ permalink raw reply related [flat|nested] 36+ messages in thread
* [Qemu-devel] [PULL 18/34] throttle: Set always an average value when setting a maximum value
2016-02-22 16:32 [Qemu-devel] [PULL 00/34] Block layer patches Kevin Wolf
` (16 preceding siblings ...)
2016-02-22 16:32 ` [Qemu-devel] [PULL 17/34] throttle: Make throttle_is_valid() " Kevin Wolf
@ 2016-02-22 16:32 ` Kevin Wolf
2016-02-22 16:32 ` [Qemu-devel] [PULL 19/34] throttle: Merge all functions that check the configuration into one Kevin Wolf
` (16 subsequent siblings)
34 siblings, 0 replies; 36+ messages in thread
From: Kevin Wolf @ 2016-02-22 16:32 UTC (permalink / raw)
To: qemu-block; +Cc: kwolf, qemu-devel
From: Alberto Garcia <berto@igalia.com>
When testing the ranges of valid values, set_cfg_value() creates
sometimes invalid throttling configurations by setting bucket.max
while leaving bucket.avg uninitialized.
While this doesn't break the current tests, it will as soon as
we unify all functions that check the validity of the throttling
configuration.
This patch ensures that the value of bucket.avg is valid when setting
bucket.max.
Signed-off-by: Alberto Garcia <berto@igalia.com>
Reviewed-by: Kevin Wolf <kwolf@redhat.com>
Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
---
tests/test-throttle.c | 2 ++
1 file changed, 2 insertions(+)
diff --git a/tests/test-throttle.c b/tests/test-throttle.c
index 0e7c7e0..3e208a8 100644
--- a/tests/test-throttle.c
+++ b/tests/test-throttle.c
@@ -222,6 +222,8 @@ static void set_cfg_value(bool is_max, int index, int value)
{
if (is_max) {
cfg.buckets[index].max = value;
+ /* If max is set, avg should never be 0 */
+ cfg.buckets[index].avg = MAX(cfg.buckets[index].avg, 1);
} else {
cfg.buckets[index].avg = value;
}
--
1.8.3.1
^ permalink raw reply related [flat|nested] 36+ messages in thread
* [Qemu-devel] [PULL 19/34] throttle: Merge all functions that check the configuration into one
2016-02-22 16:32 [Qemu-devel] [PULL 00/34] Block layer patches Kevin Wolf
` (17 preceding siblings ...)
2016-02-22 16:32 ` [Qemu-devel] [PULL 18/34] throttle: Set always an average value when setting a maximum value Kevin Wolf
@ 2016-02-22 16:32 ` Kevin Wolf
2016-02-22 16:32 ` [Qemu-devel] [PULL 20/34] throttle: Use throttle_config_init() to initialize ThrottleConfig Kevin Wolf
` (15 subsequent siblings)
34 siblings, 0 replies; 36+ messages in thread
From: Kevin Wolf @ 2016-02-22 16:32 UTC (permalink / raw)
To: qemu-block; +Cc: kwolf, qemu-devel
From: Alberto Garcia <berto@igalia.com>
There's no need to keep throttle_conflicting(), throttle_is_valid()
and throttle_max_is_missing_limit() as separate functions, so this
patch merges all three into one.
As a consequence, check_throttle_config() becomes redundant and can be
replaced with throttle_is_valid().
Signed-off-by: Alberto Garcia <berto@igalia.com>
Reviewed-by: Kevin Wolf <kwolf@redhat.com>
Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
---
blockdev.c | 21 ++-------------------
include/qemu/throttle.h | 4 ----
tests/test-throttle.c | 18 +++++++++---------
util/throttle.c | 40 ++++++++--------------------------------
4 files changed, 19 insertions(+), 64 deletions(-)
diff --git a/blockdev.c b/blockdev.c
index 11a3139..73babeb 100644
--- a/blockdev.c
+++ b/blockdev.c
@@ -343,23 +343,6 @@ static bool parse_stats_intervals(BlockAcctStats *stats, QList *intervals,
return true;
}
-static bool check_throttle_config(ThrottleConfig *cfg, Error **errp)
-{
- if (throttle_conflicting(cfg, errp)) {
- return false;
- }
-
- if (!throttle_is_valid(cfg, errp)) {
- return false;
- }
-
- if (throttle_max_is_missing_limit(cfg, errp)) {
- return false;
- }
-
- return true;
-}
-
typedef enum { MEDIA_DISK, MEDIA_CDROM } DriveMediaType;
/* All parameters but @opts are optional and may be set to NULL. */
@@ -434,7 +417,7 @@ static void extract_common_blockdev_options(QemuOpts *opts, int *bdrv_flags,
throttle_cfg->op_size =
qemu_opt_get_number(opts, "throttling.iops-size", 0);
- if (!check_throttle_config(throttle_cfg, errp)) {
+ if (!throttle_is_valid(throttle_cfg, errp)) {
return;
}
}
@@ -2660,7 +2643,7 @@ void qmp_block_set_io_throttle(const char *device, int64_t bps, int64_t bps_rd,
cfg.op_size = iops_size;
}
- if (!check_throttle_config(&cfg, errp)) {
+ if (!throttle_is_valid(&cfg, errp)) {
goto out;
}
diff --git a/include/qemu/throttle.h b/include/qemu/throttle.h
index ecae621..aec0785 100644
--- a/include/qemu/throttle.h
+++ b/include/qemu/throttle.h
@@ -106,12 +106,8 @@ bool throttle_timers_are_initialized(ThrottleTimers *tt);
/* configuration */
bool throttle_enabled(ThrottleConfig *cfg);
-bool throttle_conflicting(ThrottleConfig *cfg, Error **errp);
-
bool throttle_is_valid(ThrottleConfig *cfg, Error **errp);
-bool throttle_max_is_missing_limit(ThrottleConfig *cfg, Error **errp);
-
void throttle_config(ThrottleState *ts,
ThrottleTimers *tt,
ThrottleConfig *cfg);
diff --git a/tests/test-throttle.c b/tests/test-throttle.c
index 3e208a8..a0c17ac 100644
--- a/tests/test-throttle.c
+++ b/tests/test-throttle.c
@@ -257,31 +257,31 @@ static void test_conflicts_for_one_set(bool is_max,
int write)
{
memset(&cfg, 0, sizeof(cfg));
- g_assert(!throttle_conflicting(&cfg, NULL));
+ g_assert(throttle_is_valid(&cfg, NULL));
set_cfg_value(is_max, total, 1);
set_cfg_value(is_max, read, 1);
- g_assert(throttle_conflicting(&cfg, NULL));
+ g_assert(!throttle_is_valid(&cfg, NULL));
memset(&cfg, 0, sizeof(cfg));
set_cfg_value(is_max, total, 1);
set_cfg_value(is_max, write, 1);
- g_assert(throttle_conflicting(&cfg, NULL));
+ g_assert(!throttle_is_valid(&cfg, NULL));
memset(&cfg, 0, sizeof(cfg));
set_cfg_value(is_max, total, 1);
set_cfg_value(is_max, read, 1);
set_cfg_value(is_max, write, 1);
- g_assert(throttle_conflicting(&cfg, NULL));
+ g_assert(!throttle_is_valid(&cfg, NULL));
memset(&cfg, 0, sizeof(cfg));
set_cfg_value(is_max, total, 1);
- g_assert(!throttle_conflicting(&cfg, NULL));
+ g_assert(throttle_is_valid(&cfg, NULL));
memset(&cfg, 0, sizeof(cfg));
set_cfg_value(is_max, read, 1);
set_cfg_value(is_max, write, 1);
- g_assert(!throttle_conflicting(&cfg, NULL));
+ g_assert(throttle_is_valid(&cfg, NULL));
}
static void test_conflicting_config(void)
@@ -340,15 +340,15 @@ static void test_max_is_missing_limit(void)
memset(&cfg, 0, sizeof(cfg));
cfg.buckets[i].max = 100;
cfg.buckets[i].avg = 0;
- g_assert(throttle_max_is_missing_limit(&cfg, NULL));
+ g_assert(!throttle_is_valid(&cfg, NULL));
cfg.buckets[i].max = 0;
cfg.buckets[i].avg = 0;
- g_assert(!throttle_max_is_missing_limit(&cfg, NULL));
+ g_assert(throttle_is_valid(&cfg, NULL));
cfg.buckets[i].max = 0;
cfg.buckets[i].avg = 100;
- g_assert(!throttle_max_is_missing_limit(&cfg, NULL));
+ g_assert(throttle_is_valid(&cfg, NULL));
}
}
diff --git a/util/throttle.c b/util/throttle.c
index 9046dd8..f8bf03c 100644
--- a/util/throttle.c
+++ b/util/throttle.c
@@ -248,14 +248,14 @@ bool throttle_enabled(ThrottleConfig *cfg)
return false;
}
-/* return true if any two throttling parameters conflicts
- *
+/* check if a throttling configuration is valid
* @cfg: the throttling configuration to inspect
- * @ret: true if any conflict detected else false
+ * @ret: true if valid else false
* @errp: error object
*/
-bool throttle_conflicting(ThrottleConfig *cfg, Error **errp)
+bool throttle_is_valid(ThrottleConfig *cfg, Error **errp)
{
+ int i;
bool bps_flag, ops_flag;
bool bps_max_flag, ops_max_flag;
@@ -278,21 +278,9 @@ bool throttle_conflicting(ThrottleConfig *cfg, Error **errp)
if (bps_flag || ops_flag || bps_max_flag || ops_max_flag) {
error_setg(errp, "bps/iops/max total values and read/write values"
" cannot be used at the same time");
- return true;
+ return false;
}
- return false;
-}
-
-/* check if a throttling configuration is valid
- * @cfg: the throttling configuration to inspect
- * @ret: true if valid else false
- * @errp: error object
- */
-bool throttle_is_valid(ThrottleConfig *cfg, Error **errp)
-{
- int i;
-
for (i = 0; i < BUCKETS_COUNT; i++) {
if (cfg->buckets[i].avg < 0 ||
cfg->buckets[i].max < 0 ||
@@ -302,27 +290,15 @@ bool throttle_is_valid(ThrottleConfig *cfg, Error **errp)
THROTTLE_VALUE_MAX);
return false;
}
- }
-
- return true;
-}
-/* check if bps_max/iops_max is used without bps/iops
- * @cfg: the throttling configuration to inspect
- * @errp: error object
- */
-bool throttle_max_is_missing_limit(ThrottleConfig *cfg, Error **errp)
-{
- int i;
-
- for (i = 0; i < BUCKETS_COUNT; i++) {
if (cfg->buckets[i].max && !cfg->buckets[i].avg) {
error_setg(errp, "bps_max/iops_max require corresponding"
" bps/iops values");
- return true;
+ return false;
}
}
- return false;
+
+ return true;
}
/* fix bucket parameters */
--
1.8.3.1
^ permalink raw reply related [flat|nested] 36+ messages in thread
* [Qemu-devel] [PULL 20/34] throttle: Use throttle_config_init() to initialize ThrottleConfig
2016-02-22 16:32 [Qemu-devel] [PULL 00/34] Block layer patches Kevin Wolf
` (18 preceding siblings ...)
2016-02-22 16:32 ` [Qemu-devel] [PULL 19/34] throttle: Merge all functions that check the configuration into one Kevin Wolf
@ 2016-02-22 16:32 ` Kevin Wolf
2016-02-22 16:32 ` [Qemu-devel] [PULL 21/34] throttle: Add support for burst periods Kevin Wolf
` (14 subsequent siblings)
34 siblings, 0 replies; 36+ messages in thread
From: Kevin Wolf @ 2016-02-22 16:32 UTC (permalink / raw)
To: qemu-block; +Cc: kwolf, qemu-devel
From: Alberto Garcia <berto@igalia.com>
We can currently initialize ThrottleConfig by zeroing all its fields,
but this will change with the new fields to define the length of the
burst periods.
This patch introduces a new throttle_config_init() function and uses it
to replace all memset() calls that initialize ThrottleConfig directly.
Signed-off-by: Alberto Garcia <berto@igalia.com>
Reviewed-by: Kevin Wolf <kwolf@redhat.com>
Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
---
blockdev.c | 4 ++--
include/qemu/throttle.h | 2 ++
tests/test-throttle.c | 28 +++++++++++++++++-----------
util/throttle.c | 10 ++++++++++
4 files changed, 31 insertions(+), 13 deletions(-)
diff --git a/blockdev.c b/blockdev.c
index 73babeb..e01486e 100644
--- a/blockdev.c
+++ b/blockdev.c
@@ -387,7 +387,7 @@ static void extract_common_blockdev_options(QemuOpts *opts, int *bdrv_flags,
}
if (throttle_cfg) {
- memset(throttle_cfg, 0, sizeof(*throttle_cfg));
+ throttle_config_init(throttle_cfg);
throttle_cfg->buckets[THROTTLE_BPS_TOTAL].avg =
qemu_opt_get_number(opts, "throttling.bps-total", 0);
throttle_cfg->buckets[THROTTLE_BPS_READ].avg =
@@ -2611,7 +2611,7 @@ void qmp_block_set_io_throttle(const char *device, int64_t bps, int64_t bps_rd,
goto out;
}
- memset(&cfg, 0, sizeof(cfg));
+ throttle_config_init(&cfg);
cfg.buckets[THROTTLE_BPS_TOTAL].avg = bps;
cfg.buckets[THROTTLE_BPS_READ].avg = bps_rd;
cfg.buckets[THROTTLE_BPS_WRITE].avg = bps_wr;
diff --git a/include/qemu/throttle.h b/include/qemu/throttle.h
index aec0785..8ec8951 100644
--- a/include/qemu/throttle.h
+++ b/include/qemu/throttle.h
@@ -114,6 +114,8 @@ void throttle_config(ThrottleState *ts,
void throttle_get_config(ThrottleState *ts, ThrottleConfig *cfg);
+void throttle_config_init(ThrottleConfig *cfg);
+
/* usage */
bool throttle_schedule_timer(ThrottleState *ts,
ThrottleTimers *tt,
diff --git a/tests/test-throttle.c b/tests/test-throttle.c
index a0c17ac..34f1f9e 100644
--- a/tests/test-throttle.c
+++ b/tests/test-throttle.c
@@ -35,6 +35,9 @@ static bool double_cmp(double x, double y)
/* tests for single bucket operations */
static void test_leak_bucket(void)
{
+ throttle_config_init(&cfg);
+ bkt = cfg.buckets[THROTTLE_BPS_TOTAL];
+
/* set initial value */
bkt.avg = 150;
bkt.max = 15;
@@ -64,6 +67,9 @@ static void test_compute_wait(void)
int64_t wait;
int64_t result;
+ throttle_config_init(&cfg);
+ bkt = cfg.buckets[THROTTLE_BPS_TOTAL];
+
/* no operation limit set */
bkt.avg = 0;
bkt.max = 15;
@@ -233,17 +239,17 @@ static void test_enabled(void)
{
int i;
- memset(&cfg, 0, sizeof(cfg));
+ throttle_config_init(&cfg);
g_assert(!throttle_enabled(&cfg));
for (i = 0; i < BUCKETS_COUNT; i++) {
- memset(&cfg, 0, sizeof(cfg));
+ throttle_config_init(&cfg);
set_cfg_value(false, i, 150);
g_assert(throttle_enabled(&cfg));
}
for (i = 0; i < BUCKETS_COUNT; i++) {
- memset(&cfg, 0, sizeof(cfg));
+ throttle_config_init(&cfg);
set_cfg_value(false, i, -150);
g_assert(!throttle_enabled(&cfg));
}
@@ -256,29 +262,29 @@ static void test_conflicts_for_one_set(bool is_max,
int read,
int write)
{
- memset(&cfg, 0, sizeof(cfg));
+ throttle_config_init(&cfg);
g_assert(throttle_is_valid(&cfg, NULL));
set_cfg_value(is_max, total, 1);
set_cfg_value(is_max, read, 1);
g_assert(!throttle_is_valid(&cfg, NULL));
- memset(&cfg, 0, sizeof(cfg));
+ throttle_config_init(&cfg);
set_cfg_value(is_max, total, 1);
set_cfg_value(is_max, write, 1);
g_assert(!throttle_is_valid(&cfg, NULL));
- memset(&cfg, 0, sizeof(cfg));
+ throttle_config_init(&cfg);
set_cfg_value(is_max, total, 1);
set_cfg_value(is_max, read, 1);
set_cfg_value(is_max, write, 1);
g_assert(!throttle_is_valid(&cfg, NULL));
- memset(&cfg, 0, sizeof(cfg));
+ throttle_config_init(&cfg);
set_cfg_value(is_max, total, 1);
g_assert(throttle_is_valid(&cfg, NULL));
- memset(&cfg, 0, sizeof(cfg));
+ throttle_config_init(&cfg);
set_cfg_value(is_max, read, 1);
set_cfg_value(is_max, write, 1);
g_assert(throttle_is_valid(&cfg, NULL));
@@ -315,7 +321,7 @@ static void test_is_valid_for_value(int value, bool should_be_valid)
int is_max, index;
for (is_max = 0; is_max < 2; is_max++) {
for (index = 0; index < BUCKETS_COUNT; index++) {
- memset(&cfg, 0, sizeof(cfg));
+ throttle_config_init(&cfg);
set_cfg_value(is_max, index, value);
g_assert(throttle_is_valid(&cfg, NULL) == should_be_valid);
}
@@ -337,7 +343,7 @@ static void test_max_is_missing_limit(void)
int i;
for (i = 0; i < BUCKETS_COUNT; i++) {
- memset(&cfg, 0, sizeof(cfg));
+ throttle_config_init(&cfg);
cfg.buckets[i].max = 100;
cfg.buckets[i].avg = 0;
g_assert(!throttle_is_valid(&cfg, NULL));
@@ -552,7 +558,7 @@ static void test_groups(void)
g_assert(bdrv1->throttle_state == bdrv3->throttle_state);
/* Setting the config of a group member affects the whole group */
- memset(&cfg1, 0, sizeof(cfg1));
+ throttle_config_init(&cfg1);
cfg1.buckets[THROTTLE_BPS_READ].avg = 500000;
cfg1.buckets[THROTTLE_BPS_WRITE].avg = 285000;
cfg1.buckets[THROTTLE_OPS_READ].avg = 20000;
diff --git a/util/throttle.c b/util/throttle.c
index f8bf03c..6a01cee 100644
--- a/util/throttle.c
+++ b/util/throttle.c
@@ -171,10 +171,20 @@ void throttle_timers_attach_aio_context(ThrottleTimers *tt,
tt->write_timer_cb, tt->timer_opaque);
}
+/*
+ * Initialize the ThrottleConfig structure to a valid state
+ * @cfg: the config to initialize
+ */
+void throttle_config_init(ThrottleConfig *cfg)
+{
+ memset(cfg, 0, sizeof(*cfg));
+}
+
/* To be called first on the ThrottleState */
void throttle_init(ThrottleState *ts)
{
memset(ts, 0, sizeof(ThrottleState));
+ throttle_config_init(&ts->cfg);
}
/* To be called first on the ThrottleTimers */
--
1.8.3.1
^ permalink raw reply related [flat|nested] 36+ messages in thread
* [Qemu-devel] [PULL 21/34] throttle: Add support for burst periods
2016-02-22 16:32 [Qemu-devel] [PULL 00/34] Block layer patches Kevin Wolf
` (19 preceding siblings ...)
2016-02-22 16:32 ` [Qemu-devel] [PULL 20/34] throttle: Use throttle_config_init() to initialize ThrottleConfig Kevin Wolf
@ 2016-02-22 16:32 ` Kevin Wolf
2016-02-22 16:32 ` [Qemu-devel] [PULL 22/34] throttle: Add command-line settings to define the " Kevin Wolf
` (13 subsequent siblings)
34 siblings, 0 replies; 36+ messages in thread
From: Kevin Wolf @ 2016-02-22 16:32 UTC (permalink / raw)
To: qemu-block; +Cc: kwolf, qemu-devel
From: Alberto Garcia <berto@igalia.com>
This patch adds support for burst periods to the throttling code.
With this feature the user can keep performing bursts as defined by
the LeakyBucket.max rate for a configurable period of time.
Signed-off-by: Alberto Garcia <berto@igalia.com>
Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
---
include/qemu/throttle.h | 41 +++++++++++++++++++++++----
util/throttle.c | 73 ++++++++++++++++++++++++++++++++++++++++---------
2 files changed, 96 insertions(+), 18 deletions(-)
diff --git a/include/qemu/throttle.h b/include/qemu/throttle.h
index 8ec8951..63df690 100644
--- a/include/qemu/throttle.h
+++ b/include/qemu/throttle.h
@@ -2,7 +2,7 @@
* QEMU throttling infrastructure
*
* Copyright (C) Nodalink, EURL. 2013-2014
- * Copyright (C) Igalia, S.L. 2015
+ * Copyright (C) Igalia, S.L. 2015-2016
*
* Authors:
* Benoît Canet <benoit.canet@nodalink.com>
@@ -42,16 +42,47 @@ typedef enum {
} BucketType;
/*
- * The max parameter of the leaky bucket throttling algorithm can be used to
- * allow the guest to do bursts.
- * The max value is a pool of I/O that the guest can use without being throttled
- * at all. Throttling is triggered once this pool is empty.
+ * This module implements I/O limits using the leaky bucket
+ * algorithm. The code is independent of the I/O units, but it is
+ * currently used for bytes per second and operations per second.
+ *
+ * Three parameters can be set by the user:
+ *
+ * - avg: the desired I/O limits in units per second.
+ * - max: the limit during bursts, also in units per second.
+ * - burst_length: the maximum length of the burst period, in seconds.
+ *
+ * Here's how it works:
+ *
+ * - The bucket level (number of performed I/O units) is kept in
+ * bkt.level and leaks at a rate of bkt.avg units per second.
+ *
+ * - The size of the bucket is bkt.max * bkt.burst_length. Once the
+ * bucket is full no more I/O is performed until the bucket leaks
+ * again. This is what makes the I/O rate bkt.avg.
+ *
+ * - The bkt.avg rate does not apply until the bucket is full,
+ * allowing the user to do bursts until then. The I/O limit during
+ * bursts is bkt.max. To enforce this limit we keep an additional
+ * bucket in bkt.burst_length that leaks at a rate of bkt.max units
+ * per second.
+ *
+ * - Because of all of the above, the user can perform I/O at a
+ * maximum of bkt.max units per second for at most bkt.burst_length
+ * seconds in a row. After that the bucket will be full and the I/O
+ * rate will go down to bkt.avg.
+ *
+ * - Since the bucket always leaks at a rate of bkt.avg, this also
+ * determines how much the user needs to wait before being able to
+ * do bursts again.
*/
typedef struct LeakyBucket {
double avg; /* average goal in units per second */
double max; /* leaky bucket max burst in units */
double level; /* bucket level in units */
+ double burst_level; /* bucket level in units (for computing bursts) */
+ unsigned burst_length; /* max length of the burst period, in seconds */
} LeakyBucket;
/* The following structure is used to configure a ThrottleState
diff --git a/util/throttle.c b/util/throttle.c
index 6a01cee..371c769 100644
--- a/util/throttle.c
+++ b/util/throttle.c
@@ -41,6 +41,14 @@ void throttle_leak_bucket(LeakyBucket *bkt, int64_t delta_ns)
/* make the bucket leak */
bkt->level = MAX(bkt->level - leak, 0);
+
+ /* if we allow bursts for more than one second we also need to
+ * keep track of bkt->burst_level so the bkt->max goal per second
+ * is attained */
+ if (bkt->burst_length > 1) {
+ leak = (bkt->max * (double) delta_ns) / NANOSECONDS_PER_SECOND;
+ bkt->burst_level = MAX(bkt->burst_level - leak, 0);
+ }
}
/* Calculate the time delta since last leak and make proportionals leaks
@@ -91,13 +99,24 @@ int64_t throttle_compute_wait(LeakyBucket *bkt)
return 0;
}
- extra = bkt->level - bkt->max;
+ /* If the bucket is full then we have to wait */
+ extra = bkt->level - bkt->max * bkt->burst_length;
+ if (extra > 0) {
+ return throttle_do_compute_wait(bkt->avg, extra);
+ }
- if (extra <= 0) {
- return 0;
+ /* If the bucket is not full yet we have to make sure that we
+ * fulfill the goal of bkt->max units per second. */
+ if (bkt->burst_length > 1) {
+ /* We use 1/10 of the max value to smooth the throttling.
+ * See throttle_fix_bucket() for more details. */
+ extra = bkt->burst_level - bkt->max / 10;
+ if (extra > 0) {
+ return throttle_do_compute_wait(bkt->max, extra);
+ }
}
- return throttle_do_compute_wait(bkt->avg, extra);
+ return 0;
}
/* This function compute the time that must be waited while this IO
@@ -177,7 +196,11 @@ void throttle_timers_attach_aio_context(ThrottleTimers *tt,
*/
void throttle_config_init(ThrottleConfig *cfg)
{
+ unsigned i;
memset(cfg, 0, sizeof(*cfg));
+ for (i = 0; i < BUCKETS_COUNT; i++) {
+ cfg->buckets[i].burst_length = 1;
+ }
}
/* To be called first on the ThrottleState */
@@ -301,6 +324,16 @@ bool throttle_is_valid(ThrottleConfig *cfg, Error **errp)
return false;
}
+ if (!cfg->buckets[i].burst_length) {
+ error_setg(errp, "the burst length cannot be 0");
+ return false;
+ }
+
+ if (cfg->buckets[i].burst_length > 1 && !cfg->buckets[i].max) {
+ error_setg(errp, "burst length set without burst rate");
+ return false;
+ }
+
if (cfg->buckets[i].max && !cfg->buckets[i].avg) {
error_setg(errp, "bps_max/iops_max require corresponding"
" bps/iops values");
@@ -317,7 +350,7 @@ static void throttle_fix_bucket(LeakyBucket *bkt)
double min;
/* zero bucket level */
- bkt->level = 0;
+ bkt->level = bkt->burst_level = 0;
/* The following is done to cope with the Linux CFQ block scheduler
* which regroup reads and writes by block of 100ms in the guest.
@@ -420,22 +453,36 @@ bool throttle_schedule_timer(ThrottleState *ts,
*/
void throttle_account(ThrottleState *ts, bool is_write, uint64_t size)
{
+ const BucketType bucket_types_size[2][2] = {
+ { THROTTLE_BPS_TOTAL, THROTTLE_BPS_READ },
+ { THROTTLE_BPS_TOTAL, THROTTLE_BPS_WRITE }
+ };
+ const BucketType bucket_types_units[2][2] = {
+ { THROTTLE_OPS_TOTAL, THROTTLE_OPS_READ },
+ { THROTTLE_OPS_TOTAL, THROTTLE_OPS_WRITE }
+ };
double units = 1.0;
+ unsigned i;
/* if cfg.op_size is defined and smaller than size we compute unit count */
if (ts->cfg.op_size && size > ts->cfg.op_size) {
units = (double) size / ts->cfg.op_size;
}
- ts->cfg.buckets[THROTTLE_BPS_TOTAL].level += size;
- ts->cfg.buckets[THROTTLE_OPS_TOTAL].level += units;
+ for (i = 0; i < 2; i++) {
+ LeakyBucket *bkt;
+
+ bkt = &ts->cfg.buckets[bucket_types_size[is_write][i]];
+ bkt->level += size;
+ if (bkt->burst_length > 1) {
+ bkt->burst_level += size;
+ }
- if (is_write) {
- ts->cfg.buckets[THROTTLE_BPS_WRITE].level += size;
- ts->cfg.buckets[THROTTLE_OPS_WRITE].level += units;
- } else {
- ts->cfg.buckets[THROTTLE_BPS_READ].level += size;
- ts->cfg.buckets[THROTTLE_OPS_READ].level += units;
+ bkt = &ts->cfg.buckets[bucket_types_units[is_write][i]];
+ bkt->level += units;
+ if (bkt->burst_length > 1) {
+ bkt->burst_level += units;
+ }
}
}
--
1.8.3.1
^ permalink raw reply related [flat|nested] 36+ messages in thread
* [Qemu-devel] [PULL 22/34] throttle: Add command-line settings to define the burst periods
2016-02-22 16:32 [Qemu-devel] [PULL 00/34] Block layer patches Kevin Wolf
` (20 preceding siblings ...)
2016-02-22 16:32 ` [Qemu-devel] [PULL 21/34] throttle: Add support for burst periods Kevin Wolf
@ 2016-02-22 16:32 ` Kevin Wolf
2016-02-22 16:32 ` [Qemu-devel] [PULL 23/34] qapi: Add burst length parameters to block_set_io_throttle Kevin Wolf
` (12 subsequent siblings)
34 siblings, 0 replies; 36+ messages in thread
From: Kevin Wolf @ 2016-02-22 16:32 UTC (permalink / raw)
To: qemu-block; +Cc: kwolf, qemu-devel
From: Alberto Garcia <berto@igalia.com>
This patch adds all the throttling.*-max-length command-line
parameters to define the length of the burst periods.
Signed-off-by: Alberto Garcia <berto@igalia.com>
Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
---
blockdev.c | 37 +++++++++++++++++++++++++++++++++++++
1 file changed, 37 insertions(+)
diff --git a/blockdev.c b/blockdev.c
index e01486e..4fde17f 100644
--- a/blockdev.c
+++ b/blockdev.c
@@ -414,6 +414,19 @@ static void extract_common_blockdev_options(QemuOpts *opts, int *bdrv_flags,
throttle_cfg->buckets[THROTTLE_OPS_WRITE].max =
qemu_opt_get_number(opts, "throttling.iops-write-max", 0);
+ throttle_cfg->buckets[THROTTLE_BPS_TOTAL].burst_length =
+ qemu_opt_get_number(opts, "throttling.bps-total-max-length", 1);
+ throttle_cfg->buckets[THROTTLE_BPS_READ].burst_length =
+ qemu_opt_get_number(opts, "throttling.bps-read-max-length", 1);
+ throttle_cfg->buckets[THROTTLE_BPS_WRITE].burst_length =
+ qemu_opt_get_number(opts, "throttling.bps-write-max-length", 1);
+ throttle_cfg->buckets[THROTTLE_OPS_TOTAL].burst_length =
+ qemu_opt_get_number(opts, "throttling.iops-total-max-length", 1);
+ throttle_cfg->buckets[THROTTLE_OPS_READ].burst_length =
+ qemu_opt_get_number(opts, "throttling.iops-read-max-length", 1);
+ throttle_cfg->buckets[THROTTLE_OPS_WRITE].burst_length =
+ qemu_opt_get_number(opts, "throttling.iops-write-max-length", 1);
+
throttle_cfg->op_size =
qemu_opt_get_number(opts, "throttling.iops-size", 0);
@@ -4072,6 +4085,30 @@ QemuOptsList qemu_common_drive_opts = {
.type = QEMU_OPT_NUMBER,
.help = "total bytes write burst",
},{
+ .name = "throttling.iops-total-max-length",
+ .type = QEMU_OPT_NUMBER,
+ .help = "length of the iops-total-max burst period, in seconds",
+ },{
+ .name = "throttling.iops-read-max-length",
+ .type = QEMU_OPT_NUMBER,
+ .help = "length of the iops-read-max burst period, in seconds",
+ },{
+ .name = "throttling.iops-write-max-length",
+ .type = QEMU_OPT_NUMBER,
+ .help = "length of the iops-write-max burst period, in seconds",
+ },{
+ .name = "throttling.bps-total-max-length",
+ .type = QEMU_OPT_NUMBER,
+ .help = "length of the bps-total-max burst period, in seconds",
+ },{
+ .name = "throttling.bps-read-max-length",
+ .type = QEMU_OPT_NUMBER,
+ .help = "length of the bps-read-max burst period, in seconds",
+ },{
+ .name = "throttling.bps-write-max-length",
+ .type = QEMU_OPT_NUMBER,
+ .help = "length of the bps-write-max burst period, in seconds",
+ },{
.name = "throttling.iops-size",
.type = QEMU_OPT_NUMBER,
.help = "when limiting by iops max size of an I/O in bytes",
--
1.8.3.1
^ permalink raw reply related [flat|nested] 36+ messages in thread
* [Qemu-devel] [PULL 23/34] qapi: Add burst length parameters to block_set_io_throttle
2016-02-22 16:32 [Qemu-devel] [PULL 00/34] Block layer patches Kevin Wolf
` (21 preceding siblings ...)
2016-02-22 16:32 ` [Qemu-devel] [PULL 22/34] throttle: Add command-line settings to define the " Kevin Wolf
@ 2016-02-22 16:32 ` Kevin Wolf
2016-02-22 16:32 ` [Qemu-devel] [PULL 24/34] qapi: Add burst length fields to BlockDeviceInfo Kevin Wolf
` (11 subsequent siblings)
34 siblings, 0 replies; 36+ messages in thread
From: Kevin Wolf @ 2016-02-22 16:32 UTC (permalink / raw)
To: qemu-block; +Cc: kwolf, qemu-devel
From: Alberto Garcia <berto@igalia.com>
This patch adds the new bps_*_max_length and iops_*_max_length
parameters to the block_set_io_throttle command.
Signed-off-by: Alberto Garcia <berto@igalia.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
---
blockdev.c | 31 +++++++++++++++++++++++++++++++
hmp.c | 12 ++++++++++++
qapi/block-core.json | 51 +++++++++++++++++++++++++++++++++++++++++++++------
qmp-commands.hx | 25 ++++++++++++++++---------
4 files changed, 104 insertions(+), 15 deletions(-)
diff --git a/blockdev.c b/blockdev.c
index 4fde17f..5c02a42 100644
--- a/blockdev.c
+++ b/blockdev.c
@@ -2598,6 +2598,18 @@ void qmp_block_set_io_throttle(const char *device, int64_t bps, int64_t bps_rd,
int64_t iops_rd_max,
bool has_iops_wr_max,
int64_t iops_wr_max,
+ bool has_bps_max_length,
+ int64_t bps_max_length,
+ bool has_bps_rd_max_length,
+ int64_t bps_rd_max_length,
+ bool has_bps_wr_max_length,
+ int64_t bps_wr_max_length,
+ bool has_iops_max_length,
+ int64_t iops_max_length,
+ bool has_iops_rd_max_length,
+ int64_t iops_rd_max_length,
+ bool has_iops_wr_max_length,
+ int64_t iops_wr_max_length,
bool has_iops_size,
int64_t iops_size,
bool has_group,
@@ -2652,6 +2664,25 @@ void qmp_block_set_io_throttle(const char *device, int64_t bps, int64_t bps_rd,
cfg.buckets[THROTTLE_OPS_WRITE].max = iops_wr_max;
}
+ if (has_bps_max_length) {
+ cfg.buckets[THROTTLE_BPS_TOTAL].burst_length = bps_max_length;
+ }
+ if (has_bps_rd_max_length) {
+ cfg.buckets[THROTTLE_BPS_READ].burst_length = bps_rd_max_length;
+ }
+ if (has_bps_wr_max_length) {
+ cfg.buckets[THROTTLE_BPS_WRITE].burst_length = bps_wr_max_length;
+ }
+ if (has_iops_max_length) {
+ cfg.buckets[THROTTLE_OPS_TOTAL].burst_length = iops_max_length;
+ }
+ if (has_iops_rd_max_length) {
+ cfg.buckets[THROTTLE_OPS_READ].burst_length = iops_rd_max_length;
+ }
+ if (has_iops_wr_max_length) {
+ cfg.buckets[THROTTLE_OPS_WRITE].burst_length = iops_wr_max_length;
+ }
+
if (has_iops_size) {
cfg.op_size = iops_size;
}
diff --git a/hmp.c b/hmp.c
index bfbd667..d00c2d4 100644
--- a/hmp.c
+++ b/hmp.c
@@ -1414,6 +1414,18 @@ void hmp_block_set_io_throttle(Monitor *mon, const QDict *qdict)
0,
false,
0,
+ false, /* no burst length via HMP */
+ 0,
+ false,
+ 0,
+ false,
+ 0,
+ false,
+ 0,
+ false,
+ 0,
+ false,
+ 0,
false, /* No default I/O size */
0,
false,
diff --git a/qapi/block-core.json b/qapi/block-core.json
index 33012b8..126d834 100644
--- a/qapi/block-core.json
+++ b/qapi/block-core.json
@@ -1298,17 +1298,53 @@
#
# @iops_wr: write I/O operations per second
#
-# @bps_max: #optional total max in bytes (Since 1.7)
+# @bps_max: #optional total throughput limit during bursts,
+# in bytes (Since 1.7)
#
-# @bps_rd_max: #optional read max in bytes (Since 1.7)
+# @bps_rd_max: #optional read throughput limit during bursts,
+# in bytes (Since 1.7)
#
-# @bps_wr_max: #optional write max in bytes (Since 1.7)
+# @bps_wr_max: #optional write throughput limit during bursts,
+# in bytes (Since 1.7)
#
-# @iops_max: #optional total I/O operations max (Since 1.7)
+# @iops_max: #optional total I/O operations per second during bursts,
+# in bytes (Since 1.7)
#
-# @iops_rd_max: #optional read I/O operations max (Since 1.7)
+# @iops_rd_max: #optional read I/O operations per second during bursts,
+# in bytes (Since 1.7)
#
-# @iops_wr_max: #optional write I/O operations max (Since 1.7)
+# @iops_wr_max: #optional write I/O operations per second during bursts,
+# in bytes (Since 1.7)
+#
+# @bps_max_length: #optional maximum length of the @bps_max burst
+# period, in seconds. It must only
+# be set if @bps_max is set as well.
+# Defaults to 1. (Since 2.6)
+#
+# @bps_rd_max_length: #optional maximum length of the @bps_rd_max
+# burst period, in seconds. It must only
+# be set if @bps_rd_max is set as well.
+# Defaults to 1. (Since 2.6)
+#
+# @bps_wr_max_length: #optional maximum length of the @bps_wr_max
+# burst period, in seconds. It must only
+# be set if @bps_wr_max is set as well.
+# Defaults to 1. (Since 2.6)
+#
+# @iops_max_length: #optional maximum length of the @iops burst
+# period, in seconds. It must only
+# be set if @iops_max is set as well.
+# Defaults to 1. (Since 2.6)
+#
+# @iops_rd_max_length: #optional maximum length of the @iops_rd_max
+# burst period, in seconds. It must only
+# be set if @iops_rd_max is set as well.
+# Defaults to 1. (Since 2.6)
+#
+# @iops_wr_max_length: #optional maximum length of the @iops_wr_max
+# burst period, in seconds. It must only
+# be set if @iops_wr_max is set as well.
+# Defaults to 1. (Since 2.6)
#
# @iops_size: #optional an I/O size in bytes (Since 1.7)
#
@@ -1325,6 +1361,9 @@
'*bps_max': 'int', '*bps_rd_max': 'int',
'*bps_wr_max': 'int', '*iops_max': 'int',
'*iops_rd_max': 'int', '*iops_wr_max': 'int',
+ '*bps_max_length': 'int', '*bps_rd_max_length': 'int',
+ '*bps_wr_max_length': 'int', '*iops_max_length': 'int',
+ '*iops_rd_max_length': 'int', '*iops_wr_max_length': 'int',
'*iops_size': 'int', '*group': 'str' } }
##
diff --git a/qmp-commands.hx b/qmp-commands.hx
index 9fb0d78..085dc7d 100644
--- a/qmp-commands.hx
+++ b/qmp-commands.hx
@@ -2006,7 +2006,7 @@ EQMP
{
.name = "block_set_io_throttle",
- .args_type = "device:B,bps:l,bps_rd:l,bps_wr:l,iops:l,iops_rd:l,iops_wr:l,bps_max:l?,bps_rd_max:l?,bps_wr_max:l?,iops_max:l?,iops_rd_max:l?,iops_wr_max:l?,iops_size:l?,group:s?",
+ .args_type = "device:B,bps:l,bps_rd:l,bps_wr:l,iops:l,iops_rd:l,iops_wr:l,bps_max:l?,bps_rd_max:l?,bps_wr_max:l?,iops_max:l?,iops_rd_max:l?,iops_wr_max:l?,bps_max_length:l?,bps_rd_max_length:l?,bps_wr_max_length:l?,iops_max_length:l?,iops_rd_max_length:l?,iops_wr_max_length:l?,iops_size:l?,group:s?",
.mhandler.cmd_new = qmp_marshal_block_set_io_throttle,
},
@@ -2025,14 +2025,20 @@ Arguments:
- "iops": total I/O operations per second (json-int)
- "iops_rd": read I/O operations per second (json-int)
- "iops_wr": write I/O operations per second (json-int)
-- "bps_max": total max in bytes (json-int)
-- "bps_rd_max": read max in bytes (json-int)
-- "bps_wr_max": write max in bytes (json-int)
-- "iops_max": total I/O operations max (json-int)
-- "iops_rd_max": read I/O operations max (json-int)
-- "iops_wr_max": write I/O operations max (json-int)
-- "iops_size": I/O size in bytes when limiting (json-int)
-- "group": throttle group name (json-string)
+- "bps_max": total throughput limit during bursts, in bytes (json-int, optional)
+- "bps_rd_max": read throughput limit during bursts, in bytes (json-int, optional)
+- "bps_wr_max": write throughput limit during bursts, in bytes (json-int, optional)
+- "iops_max": total I/O operations per second during bursts (json-int, optional)
+- "iops_rd_max": read I/O operations per second during bursts (json-int, optional)
+- "iops_wr_max": write I/O operations per second during bursts (json-int, optional)
+- "bps_max_length": maximum length of the @bps_max burst period, in seconds (json-int, optional)
+- "bps_rd_max_length": maximum length of the @bps_rd_max burst period, in seconds (json-int, optional)
+- "bps_wr_max_length": maximum length of the @bps_wr_max burst period, in seconds (json-int, optional)
+- "iops_max_length": maximum length of the @iops_max burst period, in seconds (json-int, optional)
+- "iops_rd_max_length": maximum length of the @iops_rd_max burst period, in seconds (json-int, optional)
+- "iops_wr_max_length": maximum length of the @iops_wr_max burst period, in seconds (json-int, optional)
+- "iops_size": I/O size in bytes when limiting (json-int, optional)
+- "group": throttle group name (json-string, optional)
Example:
@@ -2049,6 +2055,7 @@ Example:
"iops_max": 0,
"iops_rd_max": 0,
"iops_wr_max": 0,
+ "bps_max_length": 60,
"iops_size": 0 } }
<- { "return": {} }
--
1.8.3.1
^ permalink raw reply related [flat|nested] 36+ messages in thread
* [Qemu-devel] [PULL 24/34] qapi: Add burst length fields to BlockDeviceInfo
2016-02-22 16:32 [Qemu-devel] [PULL 00/34] Block layer patches Kevin Wolf
` (22 preceding siblings ...)
2016-02-22 16:32 ` [Qemu-devel] [PULL 23/34] qapi: Add burst length parameters to block_set_io_throttle Kevin Wolf
@ 2016-02-22 16:32 ` Kevin Wolf
2016-02-22 16:32 ` [Qemu-devel] [PULL 25/34] throttle: Check that burst_level leaks correctly Kevin Wolf
` (10 subsequent siblings)
34 siblings, 0 replies; 36+ messages in thread
From: Kevin Wolf @ 2016-02-22 16:32 UTC (permalink / raw)
To: qemu-block; +Cc: kwolf, qemu-devel
From: Alberto Garcia <berto@igalia.com>
This patch adds the new bps_*_max_length and iops_*_max_length
parameters to the BlockDeviceInfo struct.
Signed-off-by: Alberto Garcia <berto@igalia.com>
Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
---
block/qapi.c | 20 ++++++++++++++++++++
qapi/block-core.json | 39 +++++++++++++++++++++++++++++++++------
2 files changed, 53 insertions(+), 6 deletions(-)
diff --git a/block/qapi.c b/block/qapi.c
index 67891b7..db2d3fb 100644
--- a/block/qapi.c
+++ b/block/qapi.c
@@ -92,6 +92,26 @@ BlockDeviceInfo *bdrv_block_device_info(BlockDriverState *bs, Error **errp)
info->has_iops_wr_max = cfg.buckets[THROTTLE_OPS_WRITE].max;
info->iops_wr_max = cfg.buckets[THROTTLE_OPS_WRITE].max;
+ info->has_bps_max_length = info->has_bps_max;
+ info->bps_max_length =
+ cfg.buckets[THROTTLE_BPS_TOTAL].burst_length;
+ info->has_bps_rd_max_length = info->has_bps_rd_max;
+ info->bps_rd_max_length =
+ cfg.buckets[THROTTLE_BPS_READ].burst_length;
+ info->has_bps_wr_max_length = info->has_bps_wr_max;
+ info->bps_wr_max_length =
+ cfg.buckets[THROTTLE_BPS_WRITE].burst_length;
+
+ info->has_iops_max_length = info->has_iops_max;
+ info->iops_max_length =
+ cfg.buckets[THROTTLE_OPS_TOTAL].burst_length;
+ info->has_iops_rd_max_length = info->has_iops_rd_max;
+ info->iops_rd_max_length =
+ cfg.buckets[THROTTLE_OPS_READ].burst_length;
+ info->has_iops_wr_max_length = info->has_iops_wr_max;
+ info->iops_wr_max_length =
+ cfg.buckets[THROTTLE_OPS_WRITE].burst_length;
+
info->has_iops_size = cfg.op_size;
info->iops_size = cfg.op_size;
diff --git a/qapi/block-core.json b/qapi/block-core.json
index 126d834..fbbc709 100644
--- a/qapi/block-core.json
+++ b/qapi/block-core.json
@@ -273,17 +273,41 @@
#
# @image: the info of image used (since: 1.6)
#
-# @bps_max: #optional total max in bytes (Since 1.7)
+# @bps_max: #optional total throughput limit during bursts,
+# in bytes (Since 1.7)
#
-# @bps_rd_max: #optional read max in bytes (Since 1.7)
+# @bps_rd_max: #optional read throughput limit during bursts,
+# in bytes (Since 1.7)
+#
+# @bps_wr_max: #optional write throughput limit during bursts,
+# in bytes (Since 1.7)
#
-# @bps_wr_max: #optional write max in bytes (Since 1.7)
+# @iops_max: #optional total I/O operations per second during bursts,
+# in bytes (Since 1.7)
#
-# @iops_max: #optional total I/O operations max (Since 1.7)
+# @iops_rd_max: #optional read I/O operations per second during bursts,
+# in bytes (Since 1.7)
#
-# @iops_rd_max: #optional read I/O operations max (Since 1.7)
+# @iops_wr_max: #optional write I/O operations per second during bursts,
+# in bytes (Since 1.7)
#
-# @iops_wr_max: #optional write I/O operations max (Since 1.7)
+# @bps_max_length: #optional maximum length of the @bps_max burst
+# period, in seconds. (Since 2.6)
+#
+# @bps_rd_max_length: #optional maximum length of the @bps_rd_max
+# burst period, in seconds. (Since 2.6)
+#
+# @bps_wr_max_length: #optional maximum length of the @bps_wr_max
+# burst period, in seconds. (Since 2.6)
+#
+# @iops_max_length: #optional maximum length of the @iops burst
+# period, in seconds. (Since 2.6)
+#
+# @iops_rd_max_length: #optional maximum length of the @iops_rd_max
+# burst period, in seconds. (Since 2.6)
+#
+# @iops_wr_max_length: #optional maximum length of the @iops_wr_max
+# burst period, in seconds. (Since 2.6)
#
# @iops_size: #optional an I/O size in bytes (Since 1.7)
#
@@ -308,6 +332,9 @@
'*bps_max': 'int', '*bps_rd_max': 'int',
'*bps_wr_max': 'int', '*iops_max': 'int',
'*iops_rd_max': 'int', '*iops_wr_max': 'int',
+ '*bps_max_length': 'int', '*bps_rd_max_length': 'int',
+ '*bps_wr_max_length': 'int', '*iops_max_length': 'int',
+ '*iops_rd_max_length': 'int', '*iops_wr_max_length': 'int',
'*iops_size': 'int', '*group': 'str', 'cache': 'BlockdevCacheInfo',
'write_threshold': 'int' } }
--
1.8.3.1
^ permalink raw reply related [flat|nested] 36+ messages in thread
* [Qemu-devel] [PULL 25/34] throttle: Check that burst_level leaks correctly
2016-02-22 16:32 [Qemu-devel] [PULL 00/34] Block layer patches Kevin Wolf
` (23 preceding siblings ...)
2016-02-22 16:32 ` [Qemu-devel] [PULL 24/34] qapi: Add burst length fields to BlockDeviceInfo Kevin Wolf
@ 2016-02-22 16:32 ` Kevin Wolf
2016-02-22 16:32 ` [Qemu-devel] [PULL 26/34] throttle: Test throttle_compute_wait() during bursts Kevin Wolf
` (9 subsequent siblings)
34 siblings, 0 replies; 36+ messages in thread
From: Kevin Wolf @ 2016-02-22 16:32 UTC (permalink / raw)
To: qemu-block; +Cc: kwolf, qemu-devel
From: Alberto Garcia <berto@igalia.com>
This patch expands test_leak_bucket() to check that burst_level leaks
correctly.
Signed-off-by: Alberto Garcia <berto@igalia.com>
Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
---
tests/test-throttle.c | 16 ++++++++++++++++
1 file changed, 16 insertions(+)
diff --git a/tests/test-throttle.c b/tests/test-throttle.c
index 34f1f9e..145ba08 100644
--- a/tests/test-throttle.c
+++ b/tests/test-throttle.c
@@ -60,6 +60,22 @@ static void test_leak_bucket(void)
g_assert(bkt.avg == 150);
g_assert(bkt.max == 15);
g_assert(double_cmp(bkt.level, 0));
+
+ /* check that burst_level leaks correctly */
+ bkt.burst_level = 6;
+ bkt.max = 250;
+ bkt.burst_length = 2; /* otherwise burst_level will not leak */
+ throttle_leak_bucket(&bkt, NANOSECONDS_PER_SECOND / 100);
+ g_assert(double_cmp(bkt.burst_level, 3.5));
+
+ throttle_leak_bucket(&bkt, NANOSECONDS_PER_SECOND / 100);
+ g_assert(double_cmp(bkt.burst_level, 1));
+
+ throttle_leak_bucket(&bkt, NANOSECONDS_PER_SECOND / 100);
+ g_assert(double_cmp(bkt.burst_level, 0));
+
+ throttle_leak_bucket(&bkt, NANOSECONDS_PER_SECOND / 100);
+ g_assert(double_cmp(bkt.burst_level, 0));
}
static void test_compute_wait(void)
--
1.8.3.1
^ permalink raw reply related [flat|nested] 36+ messages in thread
* [Qemu-devel] [PULL 26/34] throttle: Test throttle_compute_wait() during bursts
2016-02-22 16:32 [Qemu-devel] [PULL 00/34] Block layer patches Kevin Wolf
` (24 preceding siblings ...)
2016-02-22 16:32 ` [Qemu-devel] [PULL 25/34] throttle: Check that burst_level leaks correctly Kevin Wolf
@ 2016-02-22 16:32 ` Kevin Wolf
2016-02-22 16:32 ` [Qemu-devel] [PULL 27/34] qemu-iotests: Extend iotest 093 to test bursts Kevin Wolf
` (8 subsequent siblings)
34 siblings, 0 replies; 36+ messages in thread
From: Kevin Wolf @ 2016-02-22 16:32 UTC (permalink / raw)
To: qemu-block; +Cc: kwolf, qemu-devel
From: Alberto Garcia <berto@igalia.com>
This test simulates an I/O burst for more than two seconds and checks
that it works as expected.
Signed-off-by: Alberto Garcia <berto@igalia.com>
Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
---
tests/test-throttle.c | 22 ++++++++++++++++++++++
1 file changed, 22 insertions(+)
diff --git a/tests/test-throttle.c b/tests/test-throttle.c
index 145ba08..59675fa 100644
--- a/tests/test-throttle.c
+++ b/tests/test-throttle.c
@@ -80,6 +80,7 @@ static void test_leak_bucket(void)
static void test_compute_wait(void)
{
+ unsigned i;
int64_t wait;
int64_t result;
@@ -115,6 +116,27 @@ static void test_compute_wait(void)
/* time required to do half an operation */
result = (int64_t) NANOSECONDS_PER_SECOND / 150 / 2;
g_assert(wait == result);
+
+ /* Perform I/O for 2.2 seconds at a rate of bkt.max */
+ bkt.burst_length = 2;
+ bkt.level = 0;
+ bkt.avg = 10;
+ bkt.max = 200;
+ for (i = 0; i < 22; i++) {
+ double units = bkt.max / 10;
+ bkt.level += units;
+ bkt.burst_level += units;
+ throttle_leak_bucket(&bkt, NANOSECONDS_PER_SECOND / 10);
+ wait = throttle_compute_wait(&bkt);
+ g_assert(double_cmp(bkt.burst_level, 0));
+ g_assert(double_cmp(bkt.level, (i + 1) * (bkt.max - bkt.avg) / 10));
+ /* We can do bursts for the 2 seconds we have configured in
+ * burst_length. We have 100 extra miliseconds of burst
+ * because bkt.level has been leaking during this time.
+ * After that, we have to wait. */
+ result = i < 21 ? 0 : 1.8 * NANOSECONDS_PER_SECOND;
+ g_assert(wait == result);
+ }
}
/* functions to test ThrottleState initialization/destroy methods */
--
1.8.3.1
^ permalink raw reply related [flat|nested] 36+ messages in thread
* [Qemu-devel] [PULL 27/34] qemu-iotests: Extend iotest 093 to test bursts
2016-02-22 16:32 [Qemu-devel] [PULL 00/34] Block layer patches Kevin Wolf
` (25 preceding siblings ...)
2016-02-22 16:32 ` [Qemu-devel] [PULL 26/34] throttle: Test throttle_compute_wait() during bursts Kevin Wolf
@ 2016-02-22 16:32 ` Kevin Wolf
2016-02-22 16:32 ` [Qemu-devel] [PULL 28/34] qapi: Correct the name of the iops_rd parameter Kevin Wolf
` (7 subsequent siblings)
34 siblings, 0 replies; 36+ messages in thread
From: Kevin Wolf @ 2016-02-22 16:32 UTC (permalink / raw)
To: qemu-block; +Cc: kwolf, qemu-devel
From: Alberto Garcia <berto@igalia.com>
This patch adds a new test that checks that the burst settings
('iops_max', 'iops_max_length', etc.) of the throttling code work as
expected.
Signed-off-by: Alberto Garcia <berto@igalia.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
---
tests/qemu-iotests/093 | 65 ++++++++++++++++++++++++++++++++++++----------
tests/qemu-iotests/093.out | 4 +--
2 files changed, 53 insertions(+), 16 deletions(-)
diff --git a/tests/qemu-iotests/093 b/tests/qemu-iotests/093
index c0e9e2b..ce8e13c 100755
--- a/tests/qemu-iotests/093
+++ b/tests/qemu-iotests/093
@@ -3,7 +3,7 @@
# Tests for IO throttling
#
# Copyright (C) 2015 Red Hat, Inc.
-# Copyright (C) 2015 Igalia, S.L.
+# Copyright (C) 2015-2016 Igalia, S.L.
#
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
@@ -21,6 +21,8 @@
import iotests
+nsec_per_sec = 1000000000
+
class ThrottleTestCase(iotests.QMPTestCase):
test_img = "null-aio://"
max_drives = 3
@@ -42,16 +44,7 @@ class ThrottleTestCase(iotests.QMPTestCase):
def tearDown(self):
self.vm.shutdown()
- def do_test_throttle(self, ndrives, seconds, params):
- def check_limit(limit, num):
- # IO throttling algorithm is discrete, allow 10% error so the test
- # is more robust
- return limit == 0 or \
- (num < seconds * limit * 1.1 / ndrives
- and num > seconds * limit * 0.9 / ndrives)
-
- nsec_per_sec = 1000000000
-
+ def configure_throttle(self, ndrives, params):
params['group'] = 'test'
# Set the I/O throttling parameters to all drives
@@ -60,13 +53,21 @@ class ThrottleTestCase(iotests.QMPTestCase):
result = self.vm.qmp("block_set_io_throttle", conv_keys=False, **params)
self.assert_qmp(result, 'return', {})
+ def do_test_throttle(self, ndrives, seconds, params):
+ def check_limit(limit, num):
+ # IO throttling algorithm is discrete, allow 10% error so the test
+ # is more robust
+ return limit == 0 or \
+ (num < seconds * limit * 1.1 / ndrives
+ and num > seconds * limit * 0.9 / ndrives)
+
# Set vm clock to a known value
ns = seconds * nsec_per_sec
self.vm.qtest("clock_step %d" % ns)
- # Submit enough requests. They will drain bps_max and iops_max, but the
- # rest requests won't get executed until we advance the virtual clock
- # with qtest interface
+ # Submit enough requests so the throttling mechanism kicks
+ # in. The throttled requests won't be executed until we
+ # advance the virtual clock.
rq_size = 512
rd_nr = max(params['bps'] / rq_size / 2,
params['bps_rd'] / rq_size,
@@ -142,8 +143,44 @@ class ThrottleTestCase(iotests.QMPTestCase):
for tk in params:
limits = dict([(k, 0) for k in params])
limits[tk] = params[tk] * ndrives
+ self.configure_throttle(ndrives, limits)
self.do_test_throttle(ndrives, 5, limits)
+ def test_burst(self):
+ params = {"bps": 4096,
+ "bps_rd": 4096,
+ "bps_wr": 4096,
+ "iops": 10,
+ "iops_rd": 10,
+ "iops_wr": 10,
+ }
+ ndrives = 1
+ # Pick each out of all possible params and test
+ for tk in params:
+ rate = params[tk] * ndrives
+ burst_rate = rate * 7
+ burst_length = 4
+
+ # Configure the throttling settings
+ settings = dict([(k, 0) for k in params])
+ settings[tk] = rate
+ settings['%s_max' % tk] = burst_rate
+ settings['%s_max_length' % tk] = burst_length
+ self.configure_throttle(ndrives, settings)
+
+ # Wait for the bucket to empty so we can do bursts
+ wait_ns = nsec_per_sec * burst_length * burst_rate / rate
+ self.vm.qtest("clock_step %d" % wait_ns)
+
+ # Test I/O at the max burst rate
+ limits = dict([(k, 0) for k in params])
+ limits[tk] = burst_rate
+ self.do_test_throttle(ndrives, burst_length, limits)
+
+ # Now test I/O at the normal rate
+ limits[tk] = rate
+ self.do_test_throttle(ndrives, 5, limits)
+
class ThrottleTestCoroutine(ThrottleTestCase):
test_img = "null-co://"
diff --git a/tests/qemu-iotests/093.out b/tests/qemu-iotests/093.out
index fbc63e6..89968f3 100644
--- a/tests/qemu-iotests/093.out
+++ b/tests/qemu-iotests/093.out
@@ -1,5 +1,5 @@
-..
+....
----------------------------------------------------------------------
-Ran 2 tests
+Ran 4 tests
OK
--
1.8.3.1
^ permalink raw reply related [flat|nested] 36+ messages in thread
* [Qemu-devel] [PULL 28/34] qapi: Correct the name of the iops_rd parameter
2016-02-22 16:32 [Qemu-devel] [PULL 00/34] Block layer patches Kevin Wolf
` (26 preceding siblings ...)
2016-02-22 16:32 ` [Qemu-devel] [PULL 27/34] qemu-iotests: Extend iotest 093 to test bursts Kevin Wolf
@ 2016-02-22 16:32 ` Kevin Wolf
2016-02-22 16:32 ` [Qemu-devel] [PULL 29/34] docs: Document the throttling infrastructure Kevin Wolf
` (6 subsequent siblings)
34 siblings, 0 replies; 36+ messages in thread
From: Kevin Wolf @ 2016-02-22 16:32 UTC (permalink / raw)
To: qemu-block; +Cc: kwolf, qemu-devel
From: Alberto Garcia <berto@igalia.com>
Signed-off-by: Alberto Garcia <berto@igalia.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
---
qapi/block-core.json | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/qapi/block-core.json b/qapi/block-core.json
index fbbc709..9bf1b22 100644
--- a/qapi/block-core.json
+++ b/qapi/block-core.json
@@ -1321,7 +1321,7 @@
#
# @iops: total I/O operations per second
#
-# @ops_rd: read I/O operations per second
+# @iops_rd: read I/O operations per second
#
# @iops_wr: write I/O operations per second
#
--
1.8.3.1
^ permalink raw reply related [flat|nested] 36+ messages in thread
* [Qemu-devel] [PULL 29/34] docs: Document the throttling infrastructure
2016-02-22 16:32 [Qemu-devel] [PULL 00/34] Block layer patches Kevin Wolf
` (27 preceding siblings ...)
2016-02-22 16:32 ` [Qemu-devel] [PULL 28/34] qapi: Correct the name of the iops_rd parameter Kevin Wolf
@ 2016-02-22 16:32 ` Kevin Wolf
2016-02-22 16:32 ` [Qemu-devel] [PULL 30/34] MAINTAINERS: Add myself as maintainer of the throttling code Kevin Wolf
` (5 subsequent siblings)
34 siblings, 0 replies; 36+ messages in thread
From: Kevin Wolf @ 2016-02-22 16:32 UTC (permalink / raw)
To: qemu-block; +Cc: kwolf, qemu-devel
From: Alberto Garcia <berto@igalia.com>
Signed-off-by: Alberto Garcia <berto@igalia.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
---
docs/throttle.txt | 252 ++++++++++++++++++++++++++++++++++++++++++++++++++++++
1 file changed, 252 insertions(+)
create mode 100644 docs/throttle.txt
diff --git a/docs/throttle.txt b/docs/throttle.txt
new file mode 100644
index 0000000..28204e4
--- /dev/null
+++ b/docs/throttle.txt
@@ -0,0 +1,252 @@
+The QEMU throttling infrastructure
+==================================
+Copyright (C) 2016 Igalia, S.L.
+Author: Alberto Garcia <berto@igalia.com>
+
+This work is licensed under the terms of the GNU GPL, version 2 or
+later. See the COPYING file in the top-level directory.
+
+Introduction
+------------
+QEMU includes a throttling module that can be used to set limits to
+I/O operations. The code itself is generic and independent of the I/O
+units, but it is currenly used to limit the number of bytes per second
+and operations per second (IOPS) when performing disk I/O.
+
+This document explains how to use the throttling code in QEMU, and how
+it works internally. The implementation is in throttle.c.
+
+
+Using throttling to limit disk I/O
+----------------------------------
+Two aspects of the disk I/O can be limited: the number of bytes per
+second and the number of operations per second (IOPS). For each one of
+them the user can set a global limit or separate limits for read and
+write operations. This gives us a total of six different parameters.
+
+I/O limits can be set using the throttling.* parameters of -drive, or
+using the QMP 'block_set_io_throttle' command. These are the names of
+the parameters for both cases:
+
+|-----------------------+-----------------------|
+| -drive | block_set_io_throttle |
+|-----------------------+-----------------------|
+| throttling.iops-total | iops |
+| throttling.iops-read | iops_rd |
+| throttling.iops-write | iops_wr |
+| throttling.bps-total | bps |
+| throttling.bps-read | bps_rd |
+| throttling.bps-write | bps_wr |
+|-----------------------+-----------------------|
+
+It is possible to set limits for both IOPS and bps and the same time,
+and for each case we can decide whether to have separate read and
+write limits or not, but note that if iops-total is set then neither
+iops-read nor iops-write can be set. The same applies to bps-total and
+bps-read/write.
+
+The default value of these parameters is 0, and it means 'unlimited'.
+
+In its most basic usage, the user can add a drive to QEMU with a limit
+of 100 IOPS with the following -drive line:
+
+ -drive file=hd0.qcow2,throttling.iops-total=100
+
+We can do the same using QMP. In this case all these parameters are
+mandatory, so we must set to 0 the ones that we don't want to limit:
+
+ { "execute": "block_set_io_throttle",
+ "arguments": {
+ "device": "virtio0",
+ "iops": 100,
+ "iops_rd": 0,
+ "iops_wr": 0,
+ "bps": 0,
+ "bps_rd": 0,
+ "bps_wr": 0
+ }
+ }
+
+
+I/O bursts
+----------
+In addition to the basic limits we have just seen, QEMU allows the
+user to do bursts of I/O for a configurable amount of time. A burst is
+an amount of I/O that can exceed the basic limit. Bursts are useful to
+allow better performance when there are peaks of activity (the OS
+boots, a service needs to be restarted) while keeping the average
+limits lower the rest of the time.
+
+Two parameters control bursts: their length and the maximum amount of
+I/O they allow. These two can be configured separately for each one of
+the six basic parameters described in the previous section, but in
+this section we'll use 'iops-total' as an example.
+
+The I/O limit during bursts is set using 'iops-total-max', and the
+maximum length (in seconds) is set with 'iops-total-max-length'. So if
+we want to configure a drive with a basic limit of 100 IOPS and allow
+bursts of 2000 IOPS for 60 seconds, we would do it like this (the line
+is split for clarity):
+
+ -drive file=hd0.qcow2,
+ throttling.iops-total=100,
+ throttling.iops-total-max=2000,
+ throttling.iops-total-max-length=60
+
+Or, with QMP:
+
+ { "execute": "block_set_io_throttle",
+ "arguments": {
+ "device": "virtio0",
+ "iops": 100,
+ "iops_rd": 0,
+ "iops_wr": 0,
+ "bps": 0,
+ "bps_rd": 0,
+ "bps_wr": 0,
+ "iops_max": 2000,
+ "iops_max_length": 60,
+ }
+ }
+
+With this, the user can perform I/O on hd0.qcow2 at a rate of 2000
+IOPS for 1 minute before it's throttled down to 100 IOPS.
+
+The user will be able to do bursts again if there's a sufficiently
+long period of time with unused I/O (see below for details).
+
+The default value for 'iops-total-max' is 0 and it means that bursts
+are not allowed. 'iops-total-max-length' can only be set if
+'iops-total-max' is set as well, and its default value is 1 second.
+
+Here's the complete list of parameters for configuring bursts:
+
+|----------------------------------+-----------------------|
+| -drive | block_set_io_throttle |
+|----------------------------------+-----------------------|
+| throttling.iops-total-max | iops_max |
+| throttling.iops-total-max-length | iops_max_length |
+| throttling.iops-read-max | iops_rd_max |
+| throttling.iops-read-max-length | iops_rd_max_length |
+| throttling.iops-write-max | iops_wr_max |
+| throttling.iops-write-max-length | iops_wr_max_length |
+| throttling.bps-total-max | bps_max |
+| throttling.bps-total-max-length | bps_max_length |
+| throttling.bps-read-max | bps_rd_max |
+| throttling.bps-read-max-length | bps_rd_max_length |
+| throttling.bps-write-max | bps_wr_max |
+| throttling.bps-write-max-length | bps_wr_max_length |
+|----------------------------------+-----------------------|
+
+
+Controlling the size of I/O operations
+--------------------------------------
+When applying IOPS limits all I/O operations are treated equally
+regardless of their size. This means that the user can take advantage
+of this in order to circumvent the limits and submit one huge I/O
+request instead of several smaller ones.
+
+QEMU provides a setting called throttling.iops-size to prevent this
+from happening. This setting specifies the size (in bytes) of an I/O
+request for accounting purposes. Larger requests will be counted
+proportionally to this size.
+
+For example, if iops-size is set to 4096 then an 8KB request will be
+counted as two, and a 6KB request will be counted as one and a
+half. This only applies to requests larger than iops-size: smaller
+requests will be always counted as one, no matter their size.
+
+The default value of iops-size is 0 and it means that the size of the
+requests is never taken into account when applying IOPS limits.
+
+
+Applying I/O limits to groups of disks
+--------------------------------------
+In all the examples so far we have seen how to apply limits to the I/O
+performed on individual drives, but QEMU allows grouping drives so
+they all share the same limits.
+
+The way it works is that each drive with I/O limits is assigned to a
+group named using the throttling.group parameter. If this parameter is
+not specified, then the device name (i.e. 'virtio0', 'ide0-hd0') will
+be used as the group name.
+
+Limits set using the throttling.* parameters discussed earlier in this
+document apply to the combined I/O of all members of a group.
+
+Consider this example:
+
+ -drive file=hd1.qcow2,throttling.iops-total=6000,throttling.group=foo
+ -drive file=hd2.qcow2,throttling.iops-total=6000,throttling.group=foo
+ -drive file=hd3.qcow2,throttling.iops-total=3000,throttling.group=bar
+ -drive file=hd4.qcow2,throttling.iops-total=6000,throttling.group=foo
+ -drive file=hd5.qcow2,throttling.iops-total=3000,throttling.group=bar
+ -drive file=hd6.qcow2,throttling.iops-total=5000
+
+Here hd1, hd2 and hd4 are all members of a group named 'foo' with a
+combined IOPS limit of 6000, and hd3 and hd5 are members of 'bar'. hd6
+is left alone (technically it is part of a 1-member group).
+
+Limits are applied in a round-robin fashion so if there are concurrent
+I/O requests on several drives of the same group they will be
+distributed evenly.
+
+When I/O limits are applied to an existing drive using the QMP command
+'block_set_io_throttle', the following things need to be taken into
+account:
+
+ - I/O limits are shared within the same group, so new values will
+ affect all members and overwrite the previous settings. In other
+ words: if different limits are applied to members of the same
+ group, the last one wins.
+
+ - If 'group' is unset it is assumed to be the current group of that
+ drive. If the drive is not in a group yet, it will be added to a
+ group named after the device name.
+
+ - If 'group' is set then the drive will be moved to that group if
+ it was member of a different one. In this case the limits
+ specified in the parameters will be applied to the new group
+ only.
+
+ - I/O limits can be disabled by setting all of them to 0. In this
+ case the device will be removed from its group and the rest of
+ its members will not be affected. The 'group' parameter is
+ ignored.
+
+
+The Leaky Bucket algorithm
+--------------------------
+I/O limits in QEMU are implemented using the leaky bucket algorithm
+(specifically the "Leaky bucket as a meter" variant).
+
+This algorithm uses the analogy of a bucket that leaks water
+constantly. The water that gets into the bucket represents the I/O
+that has been performed, and no more I/O is allowed once the bucket is
+full.
+
+To see the way this corresponds to the throttling parameters in QEMU,
+consider the following values:
+
+ iops-total=100
+ iops-total-max=2000
+ iops-total-max-length=60
+
+ - Water leaks from the bucket at a rate of 100 IOPS.
+ - Water can be added to the bucket at a rate of 2000 IOPS.
+ - The size of the bucket is 2000 x 60 = 120000
+ - If 'iops-total-max-length' is unset then the bucket size is 100.
+
+The bucket is initially empty, therefore water can be added until it's
+full at a rate of 2000 IOPS (the burst rate). Once the bucket is full
+we can only add as much water as it leaks, therefore the I/O rate is
+reduced to 100 IOPS. If we add less water than it leaks then the
+bucket will start to empty, allowing for bursts again.
+
+Note that since water is leaking from the bucket even during bursts,
+it will take a bit more than 60 seconds at 2000 IOPS to fill it
+up. After those 60 seconds the bucket will have leaked 60 x 100 =
+6000, allowing for 3 more seconds of I/O at 2000 IOPS.
+
+Also, due to the way the algorithm works, longer burst can be done at
+a lower I/O rate, e.g. 1000 IOPS during 120 seconds.
--
1.8.3.1
^ permalink raw reply related [flat|nested] 36+ messages in thread
* [Qemu-devel] [PULL 30/34] MAINTAINERS: Add myself as maintainer of the throttling code
2016-02-22 16:32 [Qemu-devel] [PULL 00/34] Block layer patches Kevin Wolf
` (28 preceding siblings ...)
2016-02-22 16:32 ` [Qemu-devel] [PULL 29/34] docs: Document the throttling infrastructure Kevin Wolf
@ 2016-02-22 16:32 ` Kevin Wolf
2016-02-22 16:32 ` [Qemu-devel] [PULL 31/34] blockdev: unset inappropriate flags when changing medium Kevin Wolf
` (4 subsequent siblings)
34 siblings, 0 replies; 36+ messages in thread
From: Kevin Wolf @ 2016-02-22 16:32 UTC (permalink / raw)
To: qemu-block; +Cc: kwolf, qemu-devel
From: Alberto Garcia <berto@igalia.com>
Signed-off-by: Alberto Garcia <berto@igalia.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
---
MAINTAINERS | 9 +++++++++
1 file changed, 9 insertions(+)
diff --git a/MAINTAINERS b/MAINTAINERS
index 9adeda3..606d9c0 100644
--- a/MAINTAINERS
+++ b/MAINTAINERS
@@ -1283,6 +1283,15 @@ S: Maintained
F: include/qemu/sockets.h
F: util/qemu-sockets.c
+Throttling infrastructure
+M: Alberto Garcia <berto@igalia.com>
+S: Supported
+F: block/throttle-groups.c
+F: include/block/throttle-groups.h
+F: include/qemu/throttle.h
+F: util/throttle.c
+L: qemu-block@nongnu.org
+
Usermode Emulation
------------------
Overall
--
1.8.3.1
^ permalink raw reply related [flat|nested] 36+ messages in thread
* [Qemu-devel] [PULL 31/34] blockdev: unset inappropriate flags when changing medium
2016-02-22 16:32 [Qemu-devel] [PULL 00/34] Block layer patches Kevin Wolf
` (29 preceding siblings ...)
2016-02-22 16:32 ` [Qemu-devel] [PULL 30/34] MAINTAINERS: Add myself as maintainer of the throttling code Kevin Wolf
@ 2016-02-22 16:32 ` Kevin Wolf
2016-02-22 16:32 ` [Qemu-devel] [PULL 32/34] qemu-iotests: 067: ignore QMP events Kevin Wolf
` (3 subsequent siblings)
34 siblings, 0 replies; 36+ messages in thread
From: Kevin Wolf @ 2016-02-22 16:32 UTC (permalink / raw)
To: qemu-block; +Cc: kwolf, qemu-devel
From: Alyssa Milburn <fuzzie@fuzzie.org>
Most importantly, this removes BDRV_O_TEMPORARY, to avoid unlink()ing an
image which replaces a snapshotted one.
Signed-off-by: Alyssa Milburn <fuzzie@fuzzie.org>
Message-id: 20160206133618.GA16635@li141-249.members.linode.com
Signed-off-by: Max Reitz <mreitz@redhat.com>
---
blockdev.c | 2 ++
1 file changed, 2 insertions(+)
diff --git a/blockdev.c b/blockdev.c
index 5c02a42..d4bc435 100644
--- a/blockdev.c
+++ b/blockdev.c
@@ -2513,6 +2513,8 @@ void qmp_blockdev_change_medium(const char *device, const char *filename,
}
bdrv_flags = blk_get_open_flags_from_root_state(blk);
+ bdrv_flags &= ~(BDRV_O_TEMPORARY | BDRV_O_SNAPSHOT | BDRV_O_NO_BACKING |
+ BDRV_O_PROTOCOL);
if (!has_read_only) {
read_only = BLOCKDEV_CHANGE_READ_ONLY_MODE_RETAIN;
--
1.8.3.1
^ permalink raw reply related [flat|nested] 36+ messages in thread
* [Qemu-devel] [PULL 32/34] qemu-iotests: 067: ignore QMP events
2016-02-22 16:32 [Qemu-devel] [PULL 00/34] Block layer patches Kevin Wolf
` (30 preceding siblings ...)
2016-02-22 16:32 ` [Qemu-devel] [PULL 31/34] blockdev: unset inappropriate flags when changing medium Kevin Wolf
@ 2016-02-22 16:32 ` Kevin Wolf
2016-02-22 16:32 ` [Qemu-devel] [PULL 33/34] qemu-iotests: 140: don't use IDE device Kevin Wolf
` (2 subsequent siblings)
34 siblings, 0 replies; 36+ messages in thread
From: Kevin Wolf @ 2016-02-22 16:32 UTC (permalink / raw)
To: qemu-block; +Cc: kwolf, qemu-devel
From: Sascha Silbe <silbe@linux.vnet.ibm.com>
The relative ordering of "device_del" return value and the
"DEVICE_DELETED" QMP event depends on the architecture being
tested. On x86 unplugging virtio disks is asynchronous
(=qdev_unplug()= → =hotplug_handler_unplug_request()=) while on s390x
it is synchronous (=qdev_unplug()= → =hotplug_handler_unplug()=). This
leads to the actual output on s390x consistently differing from the
reference output (that was probably produced on x86).
The easiest way to address this is to filter out QMP events in
067. The DEVICE_DELETED event is already getting explicitly tested by
the Python-based test case 139, so the test coverage should be
unaffected. Make use of the recently introduced _filter_qmp_events()
to remove QMP events from the test case output and adjust the
reference output accordingly.
The tr / sed / tr trick used for filtering was suggested by Max Reitz
<mreitz@redhat.com>.
Signed-off-by: Sascha Silbe <silbe@linux.vnet.ibm.com>
Message-id: 1455886869-139916-2-git-send-email-silbe@linux.vnet.ibm.com
Signed-off-by: Max Reitz <mreitz@redhat.com>
---
tests/qemu-iotests/067 | 11 +++-
tests/qemu-iotests/067.out | 144 ---------------------------------------------
2 files changed, 10 insertions(+), 145 deletions(-)
diff --git a/tests/qemu-iotests/067 b/tests/qemu-iotests/067
index 3788534..77dec0d 100755
--- a/tests/qemu-iotests/067
+++ b/tests/qemu-iotests/067
@@ -45,11 +45,20 @@ function do_run_qemu()
echo
}
+# Remove QMP events from (pretty-printed) output. Doesn't handle
+# nested dicts correctly, but we don't get any of those in this test.
+_filter_qmp_events()
+{
+ tr '\n' '\t' | sed -e \
+ 's/{\s*"timestamp":\s*{[^}]*},\s*"event":[^,}]*\(,\s*"data":\s*{[^}]*}\)\?\s*}\s*//g' \
+ | tr '\t' '\n'
+}
+
function run_qemu()
{
do_run_qemu "$@" 2>&1 | _filter_testdir | _filter_qmp | _filter_qemu \
| sed -e 's/\("actual-size":\s*\)[0-9]\+/\1SIZE/g' \
- | _filter_generated_node_ids
+ | _filter_generated_node_ids | _filter_qmp_events
}
size=128M
diff --git a/tests/qemu-iotests/067.out b/tests/qemu-iotests/067.out
index ae3fccb..7e25a49 100644
--- a/tests/qemu-iotests/067.out
+++ b/tests/qemu-iotests/067.out
@@ -70,34 +70,6 @@ Testing: -drive file=TEST_DIR/t.qcow2,format=qcow2,if=none,id=disk -device virti
}
}
{
- "timestamp": {
- "seconds": TIMESTAMP,
- "microseconds": TIMESTAMP
- },
- "event": "DEVICE_DELETED",
- "data": {
- "path": "/machine/peripheral/virtio0/virtio-backend"
- }
-}
-{
- "timestamp": {
- "seconds": TIMESTAMP,
- "microseconds": TIMESTAMP
- },
- "event": "DEVICE_DELETED",
- "data": {
- "device": "virtio0",
- "path": "/machine/peripheral/virtio0"
- }
-}
-{
- "timestamp": {
- "seconds": TIMESTAMP,
- "microseconds": TIMESTAMP
- },
- "event": "RESET"
-}
-{
"return": [
]
}
@@ -105,14 +77,6 @@ Testing: -drive file=TEST_DIR/t.qcow2,format=qcow2,if=none,id=disk -device virti
"return": {
}
}
-{
- "timestamp": {
- "seconds": TIMESTAMP,
- "microseconds": TIMESTAMP
- },
- "event": "SHUTDOWN"
-}
-
=== -drive/device_add and device_del ===
@@ -186,34 +150,6 @@ Testing: -drive file=TEST_DIR/t.qcow2,format=qcow2,if=none,id=disk
}
}
{
- "timestamp": {
- "seconds": TIMESTAMP,
- "microseconds": TIMESTAMP
- },
- "event": "DEVICE_DELETED",
- "data": {
- "path": "/machine/peripheral/virtio0/virtio-backend"
- }
-}
-{
- "timestamp": {
- "seconds": TIMESTAMP,
- "microseconds": TIMESTAMP
- },
- "event": "DEVICE_DELETED",
- "data": {
- "device": "virtio0",
- "path": "/machine/peripheral/virtio0"
- }
-}
-{
- "timestamp": {
- "seconds": TIMESTAMP,
- "microseconds": TIMESTAMP
- },
- "event": "RESET"
-}
-{
"return": [
]
}
@@ -221,14 +157,6 @@ Testing: -drive file=TEST_DIR/t.qcow2,format=qcow2,if=none,id=disk
"return": {
}
}
-{
- "timestamp": {
- "seconds": TIMESTAMP,
- "microseconds": TIMESTAMP
- },
- "event": "SHUTDOWN"
-}
-
=== drive_add/device_add and device_del ===
@@ -305,34 +233,6 @@ Testing:
}
}
{
- "timestamp": {
- "seconds": TIMESTAMP,
- "microseconds": TIMESTAMP
- },
- "event": "DEVICE_DELETED",
- "data": {
- "path": "/machine/peripheral/virtio0/virtio-backend"
- }
-}
-{
- "timestamp": {
- "seconds": TIMESTAMP,
- "microseconds": TIMESTAMP
- },
- "event": "DEVICE_DELETED",
- "data": {
- "device": "virtio0",
- "path": "/machine/peripheral/virtio0"
- }
-}
-{
- "timestamp": {
- "seconds": TIMESTAMP,
- "microseconds": TIMESTAMP
- },
- "event": "RESET"
-}
-{
"return": [
]
}
@@ -340,14 +240,6 @@ Testing:
"return": {
}
}
-{
- "timestamp": {
- "seconds": TIMESTAMP,
- "microseconds": TIMESTAMP
- },
- "event": "SHUTDOWN"
-}
-
=== blockdev_add/device_add and device_del ===
@@ -425,34 +317,6 @@ Testing:
}
}
{
- "timestamp": {
- "seconds": TIMESTAMP,
- "microseconds": TIMESTAMP
- },
- "event": "DEVICE_DELETED",
- "data": {
- "path": "/machine/peripheral/virtio0/virtio-backend"
- }
-}
-{
- "timestamp": {
- "seconds": TIMESTAMP,
- "microseconds": TIMESTAMP
- },
- "event": "DEVICE_DELETED",
- "data": {
- "device": "virtio0",
- "path": "/machine/peripheral/virtio0"
- }
-}
-{
- "timestamp": {
- "seconds": TIMESTAMP,
- "microseconds": TIMESTAMP
- },
- "event": "RESET"
-}
-{
"return": [
{
"io-status": "ok",
@@ -506,12 +370,4 @@ Testing:
"return": {
}
}
-{
- "timestamp": {
- "seconds": TIMESTAMP,
- "microseconds": TIMESTAMP
- },
- "event": "SHUTDOWN"
-}
-
*** done
--
1.8.3.1
^ permalink raw reply related [flat|nested] 36+ messages in thread
* [Qemu-devel] [PULL 33/34] qemu-iotests: 140: don't use IDE device
2016-02-22 16:32 [Qemu-devel] [PULL 00/34] Block layer patches Kevin Wolf
` (31 preceding siblings ...)
2016-02-22 16:32 ` [Qemu-devel] [PULL 32/34] qemu-iotests: 067: ignore QMP events Kevin Wolf
@ 2016-02-22 16:32 ` Kevin Wolf
2016-02-22 16:32 ` [Qemu-devel] [PULL 34/34] qemu-iotests: 140: make description slightly more verbose Kevin Wolf
2016-02-22 17:46 ` [Qemu-devel] [PULL 00/34] Block layer patches Peter Maydell
34 siblings, 0 replies; 36+ messages in thread
From: Kevin Wolf @ 2016-02-22 16:32 UTC (permalink / raw)
To: qemu-block; +Cc: kwolf, qemu-devel
From: Sascha Silbe <silbe@linux.vnet.ibm.com>
IDE is only implemented by very few architectures (mostly PC). The
test doesn't actually need a block device attached to the
BlockBackend, so just drop it and adjust the reference output
accordingly.
Fixes: 16dee418 ("iotests: Add test for eject under NBD server")
Signed-off-by: Sascha Silbe <silbe@linux.vnet.ibm.com>
Message-id: 1455827853-33477-2-git-send-email-silbe@linux.vnet.ibm.com
Signed-off-by: Max Reitz <mreitz@redhat.com>
---
tests/qemu-iotests/140 | 2 +-
tests/qemu-iotests/140.out | 1 -
2 files changed, 1 insertion(+), 2 deletions(-)
diff --git a/tests/qemu-iotests/140 b/tests/qemu-iotests/140
index f78c317..baaf64e 100755
--- a/tests/qemu-iotests/140
+++ b/tests/qemu-iotests/140
@@ -49,7 +49,7 @@ _make_test_img 64k
$QEMU_IO -c 'write -P 42 0 64k' "$TEST_IMG" | _filter_qemu_io
keep_stderr=y \
-_launch_qemu -drive if=ide,media=cdrom,id=drv,file="$TEST_IMG",format=$IMGFMT \
+_launch_qemu -drive if=none,media=cdrom,id=drv,file="$TEST_IMG",format=$IMGFMT \
2> >(_filter_nbd)
_send_qemu_cmd $QEMU_HANDLE \
diff --git a/tests/qemu-iotests/140.out b/tests/qemu-iotests/140.out
index 72f1b4c..0409cd0 100644
--- a/tests/qemu-iotests/140.out
+++ b/tests/qemu-iotests/140.out
@@ -7,7 +7,6 @@ wrote 65536/65536 bytes at offset 0
{"return": {}}
read 65536/65536 bytes at offset 0
64 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
-{"timestamp": {"seconds": TIMESTAMP, "microseconds": TIMESTAMP}, "event": "DEVICE_TRAY_MOVED", "data": {"device": "drv", "tray-open": true}}
{"return": {}}
can't open device nbd+unix:///drv?socket=TEST_DIR/nbd: No export with name 'drv' available
no file open, try 'help open'
--
1.8.3.1
^ permalink raw reply related [flat|nested] 36+ messages in thread
* [Qemu-devel] [PULL 34/34] qemu-iotests: 140: make description slightly more verbose
2016-02-22 16:32 [Qemu-devel] [PULL 00/34] Block layer patches Kevin Wolf
` (32 preceding siblings ...)
2016-02-22 16:32 ` [Qemu-devel] [PULL 33/34] qemu-iotests: 140: don't use IDE device Kevin Wolf
@ 2016-02-22 16:32 ` Kevin Wolf
2016-02-22 17:46 ` [Qemu-devel] [PULL 00/34] Block layer patches Peter Maydell
34 siblings, 0 replies; 36+ messages in thread
From: Kevin Wolf @ 2016-02-22 16:32 UTC (permalink / raw)
To: qemu-block; +Cc: kwolf, qemu-devel
From: Sascha Silbe <silbe@linux.vnet.ibm.com>
Describe in a little more detail what the test is supposed to achieve.
Signed-off-by: Sascha Silbe <silbe@linux.vnet.ibm.com>
Message-id: 1455827853-33477-3-git-send-email-silbe@linux.vnet.ibm.com
Signed-off-by: Max Reitz <mreitz@redhat.com>
---
tests/qemu-iotests/140 | 6 +++++-
1 file changed, 5 insertions(+), 1 deletion(-)
diff --git a/tests/qemu-iotests/140 b/tests/qemu-iotests/140
index baaf64e..05e4506 100755
--- a/tests/qemu-iotests/140
+++ b/tests/qemu-iotests/140
@@ -1,6 +1,10 @@
#!/bin/bash
#
-# Test case for ejecting a BB with an NBD server attached to it
+# Test case for ejecting a BlockBackend with an NBD server attached to it
+#
+# Verify that the NBD server stops offering the drive when ejecting a
+# BlockDriverState tree from a BlockBackend (that is, a medium from a
+# drive) exposed via an NBD server.
#
# Copyright (C) 2016 Red Hat, Inc.
#
--
1.8.3.1
^ permalink raw reply related [flat|nested] 36+ messages in thread
* Re: [Qemu-devel] [PULL 00/34] Block layer patches
2016-02-22 16:32 [Qemu-devel] [PULL 00/34] Block layer patches Kevin Wolf
` (33 preceding siblings ...)
2016-02-22 16:32 ` [Qemu-devel] [PULL 34/34] qemu-iotests: 140: make description slightly more verbose Kevin Wolf
@ 2016-02-22 17:46 ` Peter Maydell
34 siblings, 0 replies; 36+ messages in thread
From: Peter Maydell @ 2016-02-22 17:46 UTC (permalink / raw)
To: Kevin Wolf; +Cc: QEMU Developers, Qemu-block
On 22 February 2016 at 16:32, Kevin Wolf <kwolf@redhat.com> wrote:
> The following changes since commit c3bce9d5f986bc22b0692a8fa9d26ce6d304375c:
>
> etraxfs_dma: Dont forward zero-length payload to clients (2016-02-20 00:17:48 +0100)
>
> are available in the git repository at:
>
> git://repo.or.cz/qemu/kevin.git tags/for-upstream
>
> for you to fetch changes up to fe243e4881bc9e09767dba05f15acb016cfa7a52:
>
> Merge remote-tracking branch 'mreitz/tags/pull-block-for-kevin-2016-02-22' into queue-block (2016-02-22 16:57:50 +0100)
>
> ----------------------------------------------------------------
>
> Block layer patches
>
> ----------------------------------------------------------------
Applied, thanks.
-- PMM
^ permalink raw reply [flat|nested] 36+ messages in thread
end of thread, other threads:[~2016-02-22 17:47 UTC | newest]
Thread overview: 36+ messages (download: mbox.gz / follow: Atom feed)
-- links below jump to the message on this page --
2016-02-22 16:32 [Qemu-devel] [PULL 00/34] Block layer patches Kevin Wolf
2016-02-22 16:32 ` [Qemu-devel] [PULL 01/34] qemu-img: initialize MapEntry object Kevin Wolf
2016-02-22 16:32 ` [Qemu-devel] [PULL 02/34] quorum: fix segfault when read fails in fifo mode Kevin Wolf
2016-02-22 16:32 ` [Qemu-devel] [PULL 03/34] spec: add qcow2 bitmaps extension specification Kevin Wolf
2016-02-22 16:32 ` [Qemu-devel] [PULL 04/34] block: Fix -incoming with snapshot=on Kevin Wolf
2016-02-22 16:32 ` [Qemu-devel] [PULL 05/34] qemu-io: add support for --object command line arg Kevin Wolf
2016-02-22 16:32 ` [Qemu-devel] [PULL 06/34] qemu-img: " Kevin Wolf
2016-02-22 16:32 ` [Qemu-devel] [PULL 07/34] qemu-io: allow specifying image as a set of options args Kevin Wolf
2016-02-22 16:32 ` [Qemu-devel] [PULL 08/34] qemu-nbd: " Kevin Wolf
2016-02-22 16:32 ` [Qemu-devel] [PULL 09/34] qemu-img: " Kevin Wolf
2016-02-22 16:32 ` [Qemu-devel] [PULL 10/34] qemu-nbd: don't overlap long option values with short options Kevin Wolf
2016-02-22 16:32 ` [Qemu-devel] [PULL 11/34] qemu-nbd: use no_argument/required_argument constants Kevin Wolf
2016-02-22 16:32 ` [Qemu-devel] [PULL 12/34] qemu-io: " Kevin Wolf
2016-02-22 16:32 ` [Qemu-devel] [PULL 13/34] block migration: Activate image on destination before writing to it Kevin Wolf
2016-02-22 16:32 ` [Qemu-devel] [PULL 14/34] throttle: Make throttle_compute_timer() static Kevin Wolf
2016-02-22 16:32 ` [Qemu-devel] [PULL 15/34] throttle: Make throttle_conflicting() set errp Kevin Wolf
2016-02-22 16:32 ` [Qemu-devel] [PULL 16/34] throttle: Make throttle_max_is_missing_limit() " Kevin Wolf
2016-02-22 16:32 ` [Qemu-devel] [PULL 17/34] throttle: Make throttle_is_valid() " Kevin Wolf
2016-02-22 16:32 ` [Qemu-devel] [PULL 18/34] throttle: Set always an average value when setting a maximum value Kevin Wolf
2016-02-22 16:32 ` [Qemu-devel] [PULL 19/34] throttle: Merge all functions that check the configuration into one Kevin Wolf
2016-02-22 16:32 ` [Qemu-devel] [PULL 20/34] throttle: Use throttle_config_init() to initialize ThrottleConfig Kevin Wolf
2016-02-22 16:32 ` [Qemu-devel] [PULL 21/34] throttle: Add support for burst periods Kevin Wolf
2016-02-22 16:32 ` [Qemu-devel] [PULL 22/34] throttle: Add command-line settings to define the " Kevin Wolf
2016-02-22 16:32 ` [Qemu-devel] [PULL 23/34] qapi: Add burst length parameters to block_set_io_throttle Kevin Wolf
2016-02-22 16:32 ` [Qemu-devel] [PULL 24/34] qapi: Add burst length fields to BlockDeviceInfo Kevin Wolf
2016-02-22 16:32 ` [Qemu-devel] [PULL 25/34] throttle: Check that burst_level leaks correctly Kevin Wolf
2016-02-22 16:32 ` [Qemu-devel] [PULL 26/34] throttle: Test throttle_compute_wait() during bursts Kevin Wolf
2016-02-22 16:32 ` [Qemu-devel] [PULL 27/34] qemu-iotests: Extend iotest 093 to test bursts Kevin Wolf
2016-02-22 16:32 ` [Qemu-devel] [PULL 28/34] qapi: Correct the name of the iops_rd parameter Kevin Wolf
2016-02-22 16:32 ` [Qemu-devel] [PULL 29/34] docs: Document the throttling infrastructure Kevin Wolf
2016-02-22 16:32 ` [Qemu-devel] [PULL 30/34] MAINTAINERS: Add myself as maintainer of the throttling code Kevin Wolf
2016-02-22 16:32 ` [Qemu-devel] [PULL 31/34] blockdev: unset inappropriate flags when changing medium Kevin Wolf
2016-02-22 16:32 ` [Qemu-devel] [PULL 32/34] qemu-iotests: 067: ignore QMP events Kevin Wolf
2016-02-22 16:32 ` [Qemu-devel] [PULL 33/34] qemu-iotests: 140: don't use IDE device Kevin Wolf
2016-02-22 16:32 ` [Qemu-devel] [PULL 34/34] qemu-iotests: 140: make description slightly more verbose Kevin Wolf
2016-02-22 17:46 ` [Qemu-devel] [PULL 00/34] Block layer patches Peter Maydell
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