* [Qemu-devel] [PULL 01/23] block: Always pass NULL as drv for bdrv_open()
2015-09-11 19:40 [Qemu-devel] [PULL 00/23] Block layer patches Kevin Wolf
@ 2015-09-11 19:40 ` Kevin Wolf
2015-09-11 19:40 ` [Qemu-devel] [PULL 02/23] block: Drop drv parameter from bdrv_open() Kevin Wolf
` (22 subsequent siblings)
23 siblings, 0 replies; 34+ messages in thread
From: Kevin Wolf @ 2015-09-11 19:40 UTC (permalink / raw)
To: qemu-block; +Cc: kwolf, qemu-devel
From: Max Reitz <mreitz@redhat.com>
Change all callers of bdrv_open() to pass the driver name in the options
QDict instead of passing its BlockDriver pointer.
Signed-off-by: Max Reitz <mreitz@redhat.com>
Reviewed-by: Alberto Garcia <berto@igalia.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
---
block.c | 24 ++++++++++----------
block/qcow2.c | 16 ++++++++-----
block/vvfat.c | 8 +++++--
blockdev.c | 72 +++++++++++++++++++++++------------------------------------
4 files changed, 57 insertions(+), 63 deletions(-)
diff --git a/block.c b/block.c
index cb5d7ae..d0b9101 100644
--- a/block.c
+++ b/block.c
@@ -1385,11 +1385,13 @@ int bdrv_append_temp_snapshot(BlockDriverState *bs, int flags, Error **errp)
qstring_from_str("file"));
qdict_put(snapshot_options, "file.filename",
qstring_from_str(tmp_filename));
+ qdict_put(snapshot_options, "driver",
+ qstring_from_str("qcow2"));
bs_snapshot = bdrv_new();
ret = bdrv_open(&bs_snapshot, NULL, NULL, snapshot_options,
- flags, &bdrv_qcow2, &local_err);
+ flags, NULL, &local_err);
if (ret < 0) {
error_propagate(errp, local_err);
goto out;
@@ -3739,7 +3741,6 @@ void bdrv_img_create(const char *filename, const char *fmt,
const char *backing_fmt, *backing_file;
int64_t size;
BlockDriver *drv, *proto_drv;
- BlockDriver *backing_drv = NULL;
Error *local_err = NULL;
int ret = 0;
@@ -3813,14 +3814,6 @@ void bdrv_img_create(const char *filename, const char *fmt,
}
backing_fmt = qemu_opt_get(opts, BLOCK_OPT_BACKING_FMT);
- if (backing_fmt) {
- backing_drv = bdrv_find_format(backing_fmt);
- if (!backing_drv) {
- error_setg(errp, "Unknown backing file format '%s'",
- backing_fmt);
- goto out;
- }
- }
// The size for the image must always be specified, with one exception:
// If we are using a backing file, we can obtain the size from there
@@ -3831,6 +3824,7 @@ void bdrv_img_create(const char *filename, const char *fmt,
char *full_backing = g_new0(char, PATH_MAX);
int64_t size;
int back_flags;
+ QDict *backing_options = NULL;
bdrv_get_full_backing_filename_from_filename(filename, backing_file,
full_backing, PATH_MAX,
@@ -3844,9 +3838,15 @@ void bdrv_img_create(const char *filename, const char *fmt,
back_flags =
flags & ~(BDRV_O_RDWR | BDRV_O_SNAPSHOT | BDRV_O_NO_BACKING);
+ if (backing_fmt) {
+ backing_options = qdict_new();
+ qdict_put(backing_options, "driver",
+ qstring_from_str(backing_fmt));
+ }
+
bs = NULL;
- ret = bdrv_open(&bs, full_backing, NULL, NULL, back_flags,
- backing_drv, &local_err);
+ ret = bdrv_open(&bs, full_backing, NULL, backing_options,
+ back_flags, NULL, &local_err);
g_free(full_backing);
if (ret < 0) {
goto out;
diff --git a/block/qcow2.c b/block/qcow2.c
index ea34ae2..867b43b 100644
--- a/block/qcow2.c
+++ b/block/qcow2.c
@@ -1873,8 +1873,10 @@ static int qcow2_create2(const char *filename, int64_t total_size,
QemuOpts *opts, int version, int refcount_order,
Error **errp)
{
- /* Calculate cluster_bits */
int cluster_bits;
+ QDict *options;
+
+ /* Calculate cluster_bits */
cluster_bits = ctz32(cluster_size);
if (cluster_bits < MIN_CLUSTER_BITS || cluster_bits > MAX_CLUSTER_BITS ||
(1 << cluster_bits) != cluster_size)
@@ -2032,9 +2034,11 @@ static int qcow2_create2(const char *filename, int64_t total_size,
* refcount of the cluster that is occupied by the header and the refcount
* table)
*/
- ret = bdrv_open(&bs, filename, NULL, NULL,
+ options = qdict_new();
+ qdict_put(options, "driver", qstring_from_str("qcow2"));
+ ret = bdrv_open(&bs, filename, NULL, options,
BDRV_O_RDWR | BDRV_O_CACHE_WB | BDRV_O_NO_FLUSH,
- &bdrv_qcow2, &local_err);
+ NULL, &local_err);
if (ret < 0) {
error_propagate(errp, local_err);
goto out;
@@ -2084,9 +2088,11 @@ static int qcow2_create2(const char *filename, int64_t total_size,
bs = NULL;
/* Reopen the image without BDRV_O_NO_FLUSH to flush it before returning */
- ret = bdrv_open(&bs, filename, NULL, NULL,
+ options = qdict_new();
+ qdict_put(options, "driver", qstring_from_str("qcow2"));
+ ret = bdrv_open(&bs, filename, NULL, options,
BDRV_O_RDWR | BDRV_O_CACHE_WB | BDRV_O_NO_BACKING,
- &bdrv_qcow2, &local_err);
+ NULL, &local_err);
if (local_err) {
error_propagate(errp, local_err);
goto out;
diff --git a/block/vvfat.c b/block/vvfat.c
index 2068697..bffe8ad 100644
--- a/block/vvfat.c
+++ b/block/vvfat.c
@@ -2926,6 +2926,8 @@ static int enable_write_target(BDRVVVFATState *s, Error **errp)
QemuOpts *opts = NULL;
int ret;
int size = sector2cluster(s, s->sector_count);
+ QDict *options;
+
s->used_clusters = calloc(size, 1);
array_init(&(s->commits), sizeof(commit_t));
@@ -2956,9 +2958,11 @@ static int enable_write_target(BDRVVVFATState *s, Error **errp)
}
s->qcow = NULL;
- ret = bdrv_open(&s->qcow, s->qcow_filename, NULL, NULL,
+ options = qdict_new();
+ qdict_put(options, "driver", qstring_from_str("qcow"));
+ ret = bdrv_open(&s->qcow, s->qcow_filename, NULL, options,
BDRV_O_RDWR | BDRV_O_CACHE_WB | BDRV_O_NO_FLUSH,
- bdrv_qcow, errp);
+ NULL, errp);
if (ret < 0) {
goto err;
}
diff --git a/blockdev.c b/blockdev.c
index 6b48be6..577bf42 100644
--- a/blockdev.c
+++ b/blockdev.c
@@ -1422,9 +1422,8 @@ typedef struct ExternalSnapshotState {
static void external_snapshot_prepare(BlkTransactionState *common,
Error **errp)
{
- BlockDriver *drv;
int flags, ret;
- QDict *options = NULL;
+ QDict *options;
Error *local_err = NULL;
bool has_device = false;
const char *device;
@@ -1459,12 +1458,6 @@ static void external_snapshot_prepare(BlkTransactionState *common,
}
/* start processing */
- drv = bdrv_find_format(format);
- if (!drv) {
- error_setg(errp, QERR_INVALID_BLOCK_FORMAT, format);
- return;
- }
-
state->old_bs = bdrv_lookup_bs(has_device ? device : NULL,
has_node_name ? node_name : NULL,
&local_err);
@@ -1523,17 +1516,18 @@ static void external_snapshot_prepare(BlkTransactionState *common,
}
}
+ options = qdict_new();
if (has_snapshot_node_name) {
- options = qdict_new();
qdict_put(options, "node-name",
qstring_from_str(snapshot_node_name));
}
+ qdict_put(options, "driver", qstring_from_str(format));
/* TODO Inherit bs->options or only take explicit options with an
* extended QMP command? */
assert(state->new_bs == NULL);
ret = bdrv_open(&state->new_bs, new_image_file, NULL, options,
- flags | BDRV_O_NO_BACKING, drv, &local_err);
+ flags | BDRV_O_NO_BACKING, NULL, &local_err);
/* We will manually add the backing_hd field to the bs later */
if (ret != 0) {
error_propagate(errp, local_err);
@@ -1895,13 +1889,19 @@ void qmp_block_passwd(bool has_device, const char *device,
/* Assumes AioContext is held */
static void qmp_bdrv_open_encrypted(BlockDriverState *bs, const char *filename,
- int bdrv_flags, BlockDriver *drv,
+ int bdrv_flags, const char *format,
const char *password, Error **errp)
{
Error *local_err = NULL;
+ QDict *options = NULL;
int ret;
- ret = bdrv_open(&bs, filename, NULL, NULL, bdrv_flags, drv, &local_err);
+ if (format) {
+ options = qdict_new();
+ qdict_put(options, "driver", qstring_from_str(format));
+ }
+
+ ret = bdrv_open(&bs, filename, NULL, options, bdrv_flags, NULL, &local_err);
if (ret < 0) {
error_propagate(errp, local_err);
return;
@@ -1916,7 +1916,6 @@ void qmp_change_blockdev(const char *device, const char *filename,
BlockBackend *blk;
BlockDriverState *bs;
AioContext *aio_context;
- BlockDriver *drv = NULL;
int bdrv_flags;
Error *err = NULL;
@@ -1931,14 +1930,6 @@ void qmp_change_blockdev(const char *device, const char *filename,
aio_context = bdrv_get_aio_context(bs);
aio_context_acquire(aio_context);
- if (format) {
- drv = bdrv_find_whitelisted_format(format, bs->read_only);
- if (!drv) {
- error_setg(errp, QERR_INVALID_BLOCK_FORMAT, format);
- goto out;
- }
- }
-
eject_device(blk, 0, &err);
if (err) {
error_propagate(errp, err);
@@ -1948,7 +1939,7 @@ void qmp_change_blockdev(const char *device, const char *filename,
bdrv_flags = bdrv_is_read_only(bs) ? 0 : BDRV_O_RDWR;
bdrv_flags |= bdrv_is_snapshot(bs) ? BDRV_O_SNAPSHOT : 0;
- qmp_bdrv_open_encrypted(bs, filename, bdrv_flags, drv, NULL, errp);
+ qmp_bdrv_open_encrypted(bs, filename, bdrv_flags, format, NULL, errp);
out:
aio_context_release(aio_context);
@@ -2466,7 +2457,7 @@ void qmp_drive_backup(const char *device, const char *target,
BlockDriverState *source = NULL;
BdrvDirtyBitmap *bmap = NULL;
AioContext *aio_context;
- BlockDriver *drv = NULL;
+ QDict *options = NULL;
Error *local_err = NULL;
int flags;
int64_t size;
@@ -2506,13 +2497,6 @@ void qmp_drive_backup(const char *device, const char *target,
if (!has_format) {
format = mode == NEW_IMAGE_MODE_EXISTING ? NULL : bs->drv->format_name;
}
- if (format) {
- drv = bdrv_find_format(format);
- if (!drv) {
- error_setg(errp, QERR_INVALID_BLOCK_FORMAT, format);
- goto out;
- }
- }
/* Early check to avoid creating target */
if (bdrv_op_is_blocked(bs, BLOCK_OP_TYPE_BACKUP_SOURCE, errp)) {
@@ -2540,7 +2524,7 @@ void qmp_drive_backup(const char *device, const char *target,
}
if (mode != NEW_IMAGE_MODE_EXISTING) {
- assert(format && drv);
+ assert(format);
if (source) {
bdrv_img_create(target, format, source->filename,
source->drv->format_name, NULL,
@@ -2556,8 +2540,13 @@ void qmp_drive_backup(const char *device, const char *target,
goto out;
}
+ if (format) {
+ options = qdict_new();
+ qdict_put(options, "driver", qstring_from_str(format));
+ }
+
target_bs = NULL;
- ret = bdrv_open(&target_bs, target, NULL, NULL, flags, drv, &local_err);
+ ret = bdrv_open(&target_bs, target, NULL, options, flags, NULL, &local_err);
if (ret < 0) {
error_propagate(errp, local_err);
goto out;
@@ -2663,9 +2652,8 @@ void qmp_drive_mirror(const char *device, const char *target,
BlockDriverState *bs;
BlockDriverState *source, *target_bs;
AioContext *aio_context;
- BlockDriver *drv = NULL;
Error *local_err = NULL;
- QDict *options = NULL;
+ QDict *options;
int flags;
int64_t size;
int ret;
@@ -2722,13 +2710,6 @@ void qmp_drive_mirror(const char *device, const char *target,
if (!has_format) {
format = mode == NEW_IMAGE_MODE_EXISTING ? NULL : bs->drv->format_name;
}
- if (format) {
- drv = bdrv_find_format(format);
- if (!drv) {
- error_setg(errp, QERR_INVALID_BLOCK_FORMAT, format);
- goto out;
- }
- }
if (bdrv_op_is_blocked(bs, BLOCK_OP_TYPE_MIRROR, errp)) {
goto out;
@@ -2783,7 +2764,7 @@ void qmp_drive_mirror(const char *device, const char *target,
&& mode != NEW_IMAGE_MODE_EXISTING)
{
/* create new image w/o backing file */
- assert(format && drv);
+ assert(format);
bdrv_img_create(target, format,
NULL, NULL, NULL, size, flags, &local_err, false);
} else {
@@ -2807,17 +2788,20 @@ void qmp_drive_mirror(const char *device, const char *target,
goto out;
}
+ options = qdict_new();
if (has_node_name) {
- options = qdict_new();
qdict_put(options, "node-name", qstring_from_str(node_name));
}
+ if (format) {
+ qdict_put(options, "driver", qstring_from_str(format));
+ }
/* Mirroring takes care of copy-on-write using the source's backing
* file.
*/
target_bs = NULL;
ret = bdrv_open(&target_bs, target, NULL, options,
- flags | BDRV_O_NO_BACKING, drv, &local_err);
+ flags | BDRV_O_NO_BACKING, NULL, &local_err);
if (ret < 0) {
error_propagate(errp, local_err);
goto out;
--
1.8.3.1
^ permalink raw reply related [flat|nested] 34+ messages in thread* [Qemu-devel] [PULL 02/23] block: Drop drv parameter from bdrv_open()
2015-09-11 19:40 [Qemu-devel] [PULL 00/23] Block layer patches Kevin Wolf
2015-09-11 19:40 ` [Qemu-devel] [PULL 01/23] block: Always pass NULL as drv for bdrv_open() Kevin Wolf
@ 2015-09-11 19:40 ` Kevin Wolf
2015-09-11 19:40 ` [Qemu-devel] [PULL 03/23] block: Drop drv parameter from bdrv_open_inherit() Kevin Wolf
` (21 subsequent siblings)
23 siblings, 0 replies; 34+ messages in thread
From: Kevin Wolf @ 2015-09-11 19:40 UTC (permalink / raw)
To: qemu-block; +Cc: kwolf, qemu-devel
From: Max Reitz <mreitz@redhat.com>
Now that this parameter is effectively unused, we can drop it and just
pass NULL on to bdrv_open_inherit().
Signed-off-by: Max Reitz <mreitz@redhat.com>
Reviewed-by: Alberto Garcia <berto@igalia.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
---
block.c | 9 ++++-----
block/block-backend.c | 2 +-
block/parallels.c | 2 +-
block/qcow.c | 2 +-
block/qcow2.c | 6 +++---
block/qed.c | 2 +-
block/sheepdog.c | 5 ++---
block/vdi.c | 2 +-
block/vhdx.c | 2 +-
block/vmdk.c | 7 +++----
block/vpc.c | 2 +-
block/vvfat.c | 2 +-
blockdev.c | 8 ++++----
include/block/block.h | 3 +--
14 files changed, 25 insertions(+), 29 deletions(-)
diff --git a/block.c b/block.c
index d0b9101..0e1b4b4 100644
--- a/block.c
+++ b/block.c
@@ -1391,7 +1391,7 @@ int bdrv_append_temp_snapshot(BlockDriverState *bs, int flags, Error **errp)
bs_snapshot = bdrv_new();
ret = bdrv_open(&bs_snapshot, NULL, NULL, snapshot_options,
- flags, NULL, &local_err);
+ flags, &local_err);
if (ret < 0) {
error_propagate(errp, local_err);
goto out;
@@ -1637,11 +1637,10 @@ close_and_fail:
}
int bdrv_open(BlockDriverState **pbs, const char *filename,
- const char *reference, QDict *options, int flags,
- BlockDriver *drv, Error **errp)
+ const char *reference, QDict *options, int flags, Error **errp)
{
return bdrv_open_inherit(pbs, filename, reference, options, flags, NULL,
- NULL, drv, errp);
+ NULL, NULL, errp);
}
typedef struct BlockReopenQueueEntry {
@@ -3846,7 +3845,7 @@ void bdrv_img_create(const char *filename, const char *fmt,
bs = NULL;
ret = bdrv_open(&bs, full_backing, NULL, backing_options,
- back_flags, NULL, &local_err);
+ back_flags, &local_err);
g_free(full_backing);
if (ret < 0) {
goto out;
diff --git a/block/block-backend.c b/block/block-backend.c
index aee8a12..c2e8732 100644
--- a/block/block-backend.c
+++ b/block/block-backend.c
@@ -126,7 +126,7 @@ BlockBackend *blk_new_open(const char *name, const char *filename,
return NULL;
}
- ret = bdrv_open(&blk->bs, filename, reference, options, flags, NULL, errp);
+ ret = bdrv_open(&blk->bs, filename, reference, options, flags, errp);
if (ret < 0) {
blk_unref(blk);
return NULL;
diff --git a/block/parallels.c b/block/parallels.c
index 046b568..5cd6ec3 100644
--- a/block/parallels.c
+++ b/block/parallels.c
@@ -476,7 +476,7 @@ static int parallels_create(const char *filename, QemuOpts *opts, Error **errp)
file = NULL;
ret = bdrv_open(&file, filename, NULL, NULL,
- BDRV_O_RDWR | BDRV_O_PROTOCOL, NULL, &local_err);
+ BDRV_O_RDWR | BDRV_O_PROTOCOL, &local_err);
if (ret < 0) {
error_propagate(errp, local_err);
return ret;
diff --git a/block/qcow.c b/block/qcow.c
index 01fba54..6e35db1 100644
--- a/block/qcow.c
+++ b/block/qcow.c
@@ -793,7 +793,7 @@ static int qcow_create(const char *filename, QemuOpts *opts, Error **errp)
qcow_bs = NULL;
ret = bdrv_open(&qcow_bs, filename, NULL, NULL,
- BDRV_O_RDWR | BDRV_O_PROTOCOL, NULL, &local_err);
+ BDRV_O_RDWR | BDRV_O_PROTOCOL, &local_err);
if (ret < 0) {
error_propagate(errp, local_err);
goto cleanup;
diff --git a/block/qcow2.c b/block/qcow2.c
index 867b43b..a707d8d 100644
--- a/block/qcow2.c
+++ b/block/qcow2.c
@@ -1975,7 +1975,7 @@ static int qcow2_create2(const char *filename, int64_t total_size,
bs = NULL;
ret = bdrv_open(&bs, filename, NULL, NULL, BDRV_O_RDWR | BDRV_O_PROTOCOL,
- NULL, &local_err);
+ &local_err);
if (ret < 0) {
error_propagate(errp, local_err);
return ret;
@@ -2038,7 +2038,7 @@ static int qcow2_create2(const char *filename, int64_t total_size,
qdict_put(options, "driver", qstring_from_str("qcow2"));
ret = bdrv_open(&bs, filename, NULL, options,
BDRV_O_RDWR | BDRV_O_CACHE_WB | BDRV_O_NO_FLUSH,
- NULL, &local_err);
+ &local_err);
if (ret < 0) {
error_propagate(errp, local_err);
goto out;
@@ -2092,7 +2092,7 @@ static int qcow2_create2(const char *filename, int64_t total_size,
qdict_put(options, "driver", qstring_from_str("qcow2"));
ret = bdrv_open(&bs, filename, NULL, options,
BDRV_O_RDWR | BDRV_O_CACHE_WB | BDRV_O_NO_BACKING,
- NULL, &local_err);
+ &local_err);
if (local_err) {
error_propagate(errp, local_err);
goto out;
diff --git a/block/qed.c b/block/qed.c
index 954ed00..a7ff1d9 100644
--- a/block/qed.c
+++ b/block/qed.c
@@ -583,7 +583,7 @@ static int qed_create(const char *filename, uint32_t cluster_size,
bs = NULL;
ret = bdrv_open(&bs, filename, NULL, NULL,
- BDRV_O_RDWR | BDRV_O_CACHE_WB | BDRV_O_PROTOCOL, NULL,
+ BDRV_O_RDWR | BDRV_O_CACHE_WB | BDRV_O_PROTOCOL,
&local_err);
if (ret < 0) {
error_propagate(errp, local_err);
diff --git a/block/sheepdog.c b/block/sheepdog.c
index 9585beb..67ca788 100644
--- a/block/sheepdog.c
+++ b/block/sheepdog.c
@@ -1554,7 +1554,7 @@ static int sd_prealloc(const char *filename, Error **errp)
int ret;
ret = bdrv_open(&bs, filename, NULL, NULL, BDRV_O_RDWR | BDRV_O_PROTOCOL,
- NULL, errp);
+ errp);
if (ret < 0) {
goto out_with_err_set;
}
@@ -1746,8 +1746,7 @@ static int sd_create(const char *filename, QemuOpts *opts,
}
bs = NULL;
- ret = bdrv_open(&bs, backing_file, NULL, NULL, BDRV_O_PROTOCOL, NULL,
- errp);
+ ret = bdrv_open(&bs, backing_file, NULL, NULL, BDRV_O_PROTOCOL, errp);
if (ret < 0) {
goto out;
}
diff --git a/block/vdi.c b/block/vdi.c
index 7642ef3..062a654 100644
--- a/block/vdi.c
+++ b/block/vdi.c
@@ -764,7 +764,7 @@ static int vdi_create(const char *filename, QemuOpts *opts, Error **errp)
goto exit;
}
ret = bdrv_open(&bs, filename, NULL, NULL, BDRV_O_RDWR | BDRV_O_PROTOCOL,
- NULL, &local_err);
+ &local_err);
if (ret < 0) {
error_propagate(errp, local_err);
goto exit;
diff --git a/block/vhdx.c b/block/vhdx.c
index f05c7a9..d3bb1bd 100644
--- a/block/vhdx.c
+++ b/block/vhdx.c
@@ -1842,7 +1842,7 @@ static int vhdx_create(const char *filename, QemuOpts *opts, Error **errp)
bs = NULL;
ret = bdrv_open(&bs, filename, NULL, NULL, BDRV_O_RDWR | BDRV_O_PROTOCOL,
- NULL, &local_err);
+ &local_err);
if (ret < 0) {
error_propagate(errp, local_err);
goto exit;
diff --git a/block/vmdk.c b/block/vmdk.c
index fbaab67..7bdc3d0 100644
--- a/block/vmdk.c
+++ b/block/vmdk.c
@@ -1632,7 +1632,7 @@ static int vmdk_create_extent(const char *filename, int64_t filesize,
assert(bs == NULL);
ret = bdrv_open(&bs, filename, NULL, NULL, BDRV_O_RDWR | BDRV_O_PROTOCOL,
- NULL, &local_err);
+ &local_err);
if (ret < 0) {
error_propagate(errp, local_err);
goto exit;
@@ -1905,8 +1905,7 @@ static int vmdk_create(const char *filename, QemuOpts *opts, Error **errp)
ret = -ENOENT;
goto exit;
}
- ret = bdrv_open(&bs, full_backing, NULL, NULL, BDRV_O_NO_BACKING, NULL,
- errp);
+ ret = bdrv_open(&bs, full_backing, NULL, NULL, BDRV_O_NO_BACKING, errp);
g_free(full_backing);
if (ret != 0) {
goto exit;
@@ -1977,7 +1976,7 @@ static int vmdk_create(const char *filename, QemuOpts *opts, Error **errp)
}
assert(new_bs == NULL);
ret = bdrv_open(&new_bs, filename, NULL, NULL,
- BDRV_O_RDWR | BDRV_O_PROTOCOL, NULL, &local_err);
+ BDRV_O_RDWR | BDRV_O_PROTOCOL, &local_err);
if (ret < 0) {
error_propagate(errp, local_err);
goto exit;
diff --git a/block/vpc.c b/block/vpc.c
index 3e385d9..2b3b518 100644
--- a/block/vpc.c
+++ b/block/vpc.c
@@ -794,7 +794,7 @@ static int vpc_create(const char *filename, QemuOpts *opts, Error **errp)
goto out;
}
ret = bdrv_open(&bs, filename, NULL, NULL, BDRV_O_RDWR | BDRV_O_PROTOCOL,
- NULL, &local_err);
+ &local_err);
if (ret < 0) {
error_propagate(errp, local_err);
goto out;
diff --git a/block/vvfat.c b/block/vvfat.c
index bffe8ad..7ddc962 100644
--- a/block/vvfat.c
+++ b/block/vvfat.c
@@ -2962,7 +2962,7 @@ static int enable_write_target(BDRVVVFATState *s, Error **errp)
qdict_put(options, "driver", qstring_from_str("qcow"));
ret = bdrv_open(&s->qcow, s->qcow_filename, NULL, options,
BDRV_O_RDWR | BDRV_O_CACHE_WB | BDRV_O_NO_FLUSH,
- NULL, errp);
+ errp);
if (ret < 0) {
goto err;
}
diff --git a/blockdev.c b/blockdev.c
index 577bf42..32b04b4 100644
--- a/blockdev.c
+++ b/blockdev.c
@@ -1527,7 +1527,7 @@ static void external_snapshot_prepare(BlkTransactionState *common,
* extended QMP command? */
assert(state->new_bs == NULL);
ret = bdrv_open(&state->new_bs, new_image_file, NULL, options,
- flags | BDRV_O_NO_BACKING, NULL, &local_err);
+ flags | BDRV_O_NO_BACKING, &local_err);
/* We will manually add the backing_hd field to the bs later */
if (ret != 0) {
error_propagate(errp, local_err);
@@ -1901,7 +1901,7 @@ static void qmp_bdrv_open_encrypted(BlockDriverState *bs, const char *filename,
qdict_put(options, "driver", qstring_from_str(format));
}
- ret = bdrv_open(&bs, filename, NULL, options, bdrv_flags, NULL, &local_err);
+ ret = bdrv_open(&bs, filename, NULL, options, bdrv_flags, &local_err);
if (ret < 0) {
error_propagate(errp, local_err);
return;
@@ -2546,7 +2546,7 @@ void qmp_drive_backup(const char *device, const char *target,
}
target_bs = NULL;
- ret = bdrv_open(&target_bs, target, NULL, options, flags, NULL, &local_err);
+ ret = bdrv_open(&target_bs, target, NULL, options, flags, &local_err);
if (ret < 0) {
error_propagate(errp, local_err);
goto out;
@@ -2801,7 +2801,7 @@ void qmp_drive_mirror(const char *device, const char *target,
*/
target_bs = NULL;
ret = bdrv_open(&target_bs, target, NULL, options,
- flags | BDRV_O_NO_BACKING, NULL, &local_err);
+ flags | BDRV_O_NO_BACKING, &local_err);
if (ret < 0) {
error_propagate(errp, local_err);
goto out;
diff --git a/include/block/block.h b/include/block/block.h
index 0acd104..ab4518c 100644
--- a/include/block/block.h
+++ b/include/block/block.h
@@ -218,8 +218,7 @@ void bdrv_set_backing_hd(BlockDriverState *bs, BlockDriverState *backing_hd);
int bdrv_open_backing_file(BlockDriverState *bs, QDict *options, Error **errp);
int bdrv_append_temp_snapshot(BlockDriverState *bs, int flags, Error **errp);
int bdrv_open(BlockDriverState **pbs, const char *filename,
- const char *reference, QDict *options, int flags,
- BlockDriver *drv, Error **errp);
+ const char *reference, QDict *options, int flags, Error **errp);
BlockReopenQueue *bdrv_reopen_queue(BlockReopenQueue *bs_queue,
BlockDriverState *bs, int flags);
int bdrv_reopen_multiple(BlockReopenQueue *bs_queue, Error **errp);
--
1.8.3.1
^ permalink raw reply related [flat|nested] 34+ messages in thread* [Qemu-devel] [PULL 03/23] block: Drop drv parameter from bdrv_open_inherit()
2015-09-11 19:40 [Qemu-devel] [PULL 00/23] Block layer patches Kevin Wolf
2015-09-11 19:40 ` [Qemu-devel] [PULL 01/23] block: Always pass NULL as drv for bdrv_open() Kevin Wolf
2015-09-11 19:40 ` [Qemu-devel] [PULL 02/23] block: Drop drv parameter from bdrv_open() Kevin Wolf
@ 2015-09-11 19:40 ` Kevin Wolf
2015-09-11 19:40 ` [Qemu-devel] [PULL 04/23] block: Drop drv parameter from bdrv_fill_options() Kevin Wolf
` (20 subsequent siblings)
23 siblings, 0 replies; 34+ messages in thread
From: Kevin Wolf @ 2015-09-11 19:40 UTC (permalink / raw)
To: qemu-block; +Cc: kwolf, qemu-devel
From: Max Reitz <mreitz@redhat.com>
Now that this parameter is effectively unused, we can drop it and just
pass NULL to bdrv_fill_options().
Signed-off-by: Max Reitz <mreitz@redhat.com>
Reviewed-by: Alberto Garcia <berto@igalia.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
---
block.c | 17 +++++++----------
1 file changed, 7 insertions(+), 10 deletions(-)
diff --git a/block.c b/block.c
index 0e1b4b4..52fa7f8 100644
--- a/block.c
+++ b/block.c
@@ -85,8 +85,7 @@ static QLIST_HEAD(, BlockDriver) bdrv_drivers =
static int bdrv_open_inherit(BlockDriverState **pbs, const char *filename,
const char *reference, QDict *options, int flags,
BlockDriverState *parent,
- const BdrvChildRole *child_role,
- BlockDriver *drv, Error **errp);
+ const BdrvChildRole *child_role, Error **errp);
static void bdrv_dirty_bitmap_truncate(BlockDriverState *bs);
/* If non-zero, use only whitelisted block drivers */
@@ -1227,8 +1226,7 @@ int bdrv_open_backing_file(BlockDriverState *bs, QDict *options, Error **errp)
assert(bs->backing_hd == NULL);
ret = bdrv_open_inherit(&backing_hd,
*backing_filename ? backing_filename : NULL,
- NULL, options, 0, bs, &child_backing,
- NULL, &local_err);
+ NULL, options, 0, bs, &child_backing, &local_err);
if (ret < 0) {
bdrv_unref(backing_hd);
backing_hd = NULL;
@@ -1291,7 +1289,7 @@ BdrvChild *bdrv_open_child(const char *filename,
bs = NULL;
ret = bdrv_open_inherit(&bs, filename, reference, image_options, 0,
- parent, child_role, NULL, errp);
+ parent, child_role, errp);
if (ret < 0) {
goto done;
}
@@ -1422,11 +1420,11 @@ out:
static int bdrv_open_inherit(BlockDriverState **pbs, const char *filename,
const char *reference, QDict *options, int flags,
BlockDriverState *parent,
- const BdrvChildRole *child_role,
- BlockDriver *drv, Error **errp)
+ const BdrvChildRole *child_role, Error **errp)
{
int ret;
BlockDriverState *file = NULL, *bs;
+ BlockDriver *drv = NULL;
const char *drvname;
Error *local_err = NULL;
int snapshot_flags = 0;
@@ -1476,13 +1474,12 @@ static int bdrv_open_inherit(BlockDriverState **pbs, const char *filename,
flags = child_role->inherit_flags(parent->open_flags);
}
- ret = bdrv_fill_options(&options, &filename, &flags, drv, &local_err);
+ ret = bdrv_fill_options(&options, &filename, &flags, NULL, &local_err);
if (local_err) {
goto fail;
}
/* Find the right image format driver */
- drv = NULL;
drvname = qdict_get_try_str(options, "driver");
if (drvname) {
drv = bdrv_find_format(drvname);
@@ -1640,7 +1637,7 @@ int bdrv_open(BlockDriverState **pbs, const char *filename,
const char *reference, QDict *options, int flags, Error **errp)
{
return bdrv_open_inherit(pbs, filename, reference, options, flags, NULL,
- NULL, NULL, errp);
+ NULL, errp);
}
typedef struct BlockReopenQueueEntry {
--
1.8.3.1
^ permalink raw reply related [flat|nested] 34+ messages in thread* [Qemu-devel] [PULL 04/23] block: Drop drv parameter from bdrv_fill_options()
2015-09-11 19:40 [Qemu-devel] [PULL 00/23] Block layer patches Kevin Wolf
` (2 preceding siblings ...)
2015-09-11 19:40 ` [Qemu-devel] [PULL 03/23] block: Drop drv parameter from bdrv_open_inherit() Kevin Wolf
@ 2015-09-11 19:40 ` Kevin Wolf
2015-09-11 19:40 ` [Qemu-devel] [PULL 05/23] block: Drop bdrv_find_whitelisted_format() Kevin Wolf
` (19 subsequent siblings)
23 siblings, 0 replies; 34+ messages in thread
From: Kevin Wolf @ 2015-09-11 19:40 UTC (permalink / raw)
To: qemu-block; +Cc: kwolf, qemu-devel
From: Max Reitz <mreitz@redhat.com>
Now that this parameter is effectively unused, we can drop it and change
the function accordingly.
Signed-off-by: Max Reitz <mreitz@redhat.com>
Reviewed-by: Alberto Garcia <berto@igalia.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
---
block.c | 59 ++++++++++++++++++++++-------------------------------------
1 file changed, 22 insertions(+), 37 deletions(-)
diff --git a/block.c b/block.c
index 52fa7f8..7c61555 100644
--- a/block.c
+++ b/block.c
@@ -996,13 +996,13 @@ static QDict *parse_json_filename(const char *filename, Error **errp)
* block driver has been specified explicitly.
*/
static int bdrv_fill_options(QDict **options, const char **pfilename,
- int *flags, BlockDriver *drv, Error **errp)
+ int *flags, Error **errp)
{
const char *filename = *pfilename;
const char *drvname;
bool protocol = *flags & BDRV_O_PROTOCOL;
bool parse_filename = false;
- BlockDriver *tmp_drv;
+ BlockDriver *drv = NULL;
Error *local_err = NULL;
/* Parse json: pseudo-protocol */
@@ -1021,15 +1021,15 @@ static int bdrv_fill_options(QDict **options, const char **pfilename,
}
drvname = qdict_get_try_str(*options, "driver");
-
- /* If the user has explicitly specified the driver, this choice should
- * override the BDRV_O_PROTOCOL flag */
- tmp_drv = drv;
- if (!tmp_drv && drvname) {
- tmp_drv = bdrv_find_format(drvname);
- }
- if (tmp_drv) {
- protocol = tmp_drv->bdrv_file_open;
+ if (drvname) {
+ drv = bdrv_find_format(drvname);
+ if (!drv) {
+ error_setg(errp, "Unknown driver '%s'", drvname);
+ return -ENOENT;
+ }
+ /* If the user has explicitly specified the driver, this choice should
+ * override the BDRV_O_PROTOCOL flag */
+ protocol = drv->bdrv_file_open;
}
if (protocol) {
@@ -1053,33 +1053,18 @@ static int bdrv_fill_options(QDict **options, const char **pfilename,
/* Find the right block driver */
filename = qdict_get_try_str(*options, "filename");
- if (drv) {
- if (drvname) {
- error_setg(errp, "Driver specified twice");
- return -EINVAL;
- }
- drvname = drv->format_name;
- qdict_put(*options, "driver", qstring_from_str(drvname));
- } else {
- if (!drvname && protocol) {
- if (filename) {
- drv = bdrv_find_protocol(filename, parse_filename, errp);
- if (!drv) {
- return -EINVAL;
- }
-
- drvname = drv->format_name;
- qdict_put(*options, "driver", qstring_from_str(drvname));
- } else {
- error_setg(errp, "Must specify either driver or file");
- return -EINVAL;
- }
- } else if (drvname) {
- drv = bdrv_find_format(drvname);
+ if (!drvname && protocol) {
+ if (filename) {
+ drv = bdrv_find_protocol(filename, parse_filename, errp);
if (!drv) {
- error_setg(errp, "Unknown driver '%s'", drvname);
- return -ENOENT;
+ return -EINVAL;
}
+
+ drvname = drv->format_name;
+ qdict_put(*options, "driver", qstring_from_str(drvname));
+ } else {
+ error_setg(errp, "Must specify either driver or file");
+ return -EINVAL;
}
}
@@ -1474,7 +1459,7 @@ static int bdrv_open_inherit(BlockDriverState **pbs, const char *filename,
flags = child_role->inherit_flags(parent->open_flags);
}
- ret = bdrv_fill_options(&options, &filename, &flags, NULL, &local_err);
+ ret = bdrv_fill_options(&options, &filename, &flags, &local_err);
if (local_err) {
goto fail;
}
--
1.8.3.1
^ permalink raw reply related [flat|nested] 34+ messages in thread* [Qemu-devel] [PULL 05/23] block: Drop bdrv_find_whitelisted_format()
2015-09-11 19:40 [Qemu-devel] [PULL 00/23] Block layer patches Kevin Wolf
` (3 preceding siblings ...)
2015-09-11 19:40 ` [Qemu-devel] [PULL 04/23] block: Drop drv parameter from bdrv_fill_options() Kevin Wolf
@ 2015-09-11 19:40 ` Kevin Wolf
2015-09-11 19:40 ` [Qemu-devel] [PULL 06/23] qcow2: Rename BDRVQcowState to BDRVQcow2State Kevin Wolf
` (18 subsequent siblings)
23 siblings, 0 replies; 34+ messages in thread
From: Kevin Wolf @ 2015-09-11 19:40 UTC (permalink / raw)
To: qemu-block; +Cc: kwolf, qemu-devel
From: Max Reitz <mreitz@redhat.com>
It is unused by now, so we can drop it.
Signed-off-by: Max Reitz <mreitz@redhat.com>
Reviewed-by: Alberto Garcia <berto@igalia.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
---
block.c | 7 -------
include/block/block.h | 2 --
2 files changed, 9 deletions(-)
diff --git a/block.c b/block.c
index 7c61555..3de83e6 100644
--- a/block.c
+++ b/block.c
@@ -313,13 +313,6 @@ static int bdrv_is_whitelisted(BlockDriver *drv, bool read_only)
return 0;
}
-BlockDriver *bdrv_find_whitelisted_format(const char *format_name,
- bool read_only)
-{
- BlockDriver *drv = bdrv_find_format(format_name);
- return drv && bdrv_is_whitelisted(drv, read_only) ? drv : NULL;
-}
-
typedef struct CreateCo {
BlockDriver *drv;
char *filename;
diff --git a/include/block/block.h b/include/block/block.h
index ab4518c..e539194 100644
--- a/include/block/block.h
+++ b/include/block/block.h
@@ -193,8 +193,6 @@ BlockDriver *bdrv_find_protocol(const char *filename,
bool allow_protocol_prefix,
Error **errp);
BlockDriver *bdrv_find_format(const char *format_name);
-BlockDriver *bdrv_find_whitelisted_format(const char *format_name,
- bool readonly);
int bdrv_create(BlockDriver *drv, const char* filename,
QemuOpts *opts, Error **errp);
int bdrv_create_file(const char *filename, QemuOpts *opts, Error **errp);
--
1.8.3.1
^ permalink raw reply related [flat|nested] 34+ messages in thread* [Qemu-devel] [PULL 06/23] qcow2: Rename BDRVQcowState to BDRVQcow2State
2015-09-11 19:40 [Qemu-devel] [PULL 00/23] Block layer patches Kevin Wolf
` (4 preceding siblings ...)
2015-09-11 19:40 ` [Qemu-devel] [PULL 05/23] block: Drop bdrv_find_whitelisted_format() Kevin Wolf
@ 2015-09-11 19:40 ` Kevin Wolf
2015-09-11 19:40 ` [Qemu-devel] [PULL 07/23] block: Allow specifying driver-specific options to reopen Kevin Wolf
` (17 subsequent siblings)
23 siblings, 0 replies; 34+ messages in thread
From: Kevin Wolf @ 2015-09-11 19:40 UTC (permalink / raw)
To: qemu-block; +Cc: kwolf, qemu-devel
BDRVQcowState is already used by qcow1, and gdb is always confused which
one to use. Rename the qcow2 one so they can be distinguished.
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Reviewed-by: Max Reitz <mreitz@redhat.com>
Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com>
Reviewed-by: Alberto Garcia <berto@igalia.com>
---
block/qcow2-cache.c | 14 ++++-----
block/qcow2-cluster.c | 48 +++++++++++++++----------------
block/qcow2-refcount.c | 58 ++++++++++++++++++-------------------
block/qcow2-snapshot.c | 20 ++++++-------
block/qcow2.c | 78 +++++++++++++++++++++++++-------------------------
block/qcow2.h | 22 +++++++-------
6 files changed, 120 insertions(+), 120 deletions(-)
diff --git a/block/qcow2-cache.c b/block/qcow2-cache.c
index 046f5b8..7b14c5c 100644
--- a/block/qcow2-cache.c
+++ b/block/qcow2-cache.c
@@ -55,14 +55,14 @@ struct Qcow2Cache {
static inline void *qcow2_cache_get_table_addr(BlockDriverState *bs,
Qcow2Cache *c, int table)
{
- BDRVQcowState *s = bs->opaque;
+ BDRVQcow2State *s = bs->opaque;
return (uint8_t *) c->table_array + (size_t) table * s->cluster_size;
}
static inline int qcow2_cache_get_table_idx(BlockDriverState *bs,
Qcow2Cache *c, void *table)
{
- BDRVQcowState *s = bs->opaque;
+ BDRVQcow2State *s = bs->opaque;
ptrdiff_t table_offset = (uint8_t *) table - (uint8_t *) c->table_array;
int idx = table_offset / s->cluster_size;
assert(idx >= 0 && idx < c->size && table_offset % s->cluster_size == 0);
@@ -73,7 +73,7 @@ static void qcow2_cache_table_release(BlockDriverState *bs, Qcow2Cache *c,
int i, int num_tables)
{
#if QEMU_MADV_DONTNEED != QEMU_MADV_INVALID
- BDRVQcowState *s = bs->opaque;
+ BDRVQcow2State *s = bs->opaque;
void *t = qcow2_cache_get_table_addr(bs, c, i);
int align = getpagesize();
size_t mem_size = (size_t) s->cluster_size * num_tables;
@@ -121,7 +121,7 @@ void qcow2_cache_clean_unused(BlockDriverState *bs, Qcow2Cache *c)
Qcow2Cache *qcow2_cache_create(BlockDriverState *bs, int num_tables)
{
- BDRVQcowState *s = bs->opaque;
+ BDRVQcow2State *s = bs->opaque;
Qcow2Cache *c;
c = g_new0(Qcow2Cache, 1);
@@ -172,7 +172,7 @@ static int qcow2_cache_flush_dependency(BlockDriverState *bs, Qcow2Cache *c)
static int qcow2_cache_entry_flush(BlockDriverState *bs, Qcow2Cache *c, int i)
{
- BDRVQcowState *s = bs->opaque;
+ BDRVQcow2State *s = bs->opaque;
int ret = 0;
if (!c->entries[i].dirty || !c->entries[i].offset) {
@@ -229,7 +229,7 @@ static int qcow2_cache_entry_flush(BlockDriverState *bs, Qcow2Cache *c, int i)
int qcow2_cache_flush(BlockDriverState *bs, Qcow2Cache *c)
{
- BDRVQcowState *s = bs->opaque;
+ BDRVQcow2State *s = bs->opaque;
int result = 0;
int ret;
int i;
@@ -306,7 +306,7 @@ int qcow2_cache_empty(BlockDriverState *bs, Qcow2Cache *c)
static int qcow2_cache_do_get(BlockDriverState *bs, Qcow2Cache *c,
uint64_t offset, void **table, bool read_from_disk)
{
- BDRVQcowState *s = bs->opaque;
+ BDRVQcow2State *s = bs->opaque;
int i;
int ret;
int lookup_index;
diff --git a/block/qcow2-cluster.c b/block/qcow2-cluster.c
index 61309ae..412ee27 100644
--- a/block/qcow2-cluster.c
+++ b/block/qcow2-cluster.c
@@ -32,7 +32,7 @@
int qcow2_grow_l1_table(BlockDriverState *bs, uint64_t min_size,
bool exact_size)
{
- BDRVQcowState *s = bs->opaque;
+ BDRVQcow2State *s = bs->opaque;
int new_l1_size2, ret, i;
uint64_t *new_l1_table;
int64_t old_l1_table_offset, old_l1_size;
@@ -148,7 +148,7 @@ int qcow2_grow_l1_table(BlockDriverState *bs, uint64_t min_size,
static int l2_load(BlockDriverState *bs, uint64_t l2_offset,
uint64_t **l2_table)
{
- BDRVQcowState *s = bs->opaque;
+ BDRVQcow2State *s = bs->opaque;
int ret;
ret = qcow2_cache_get(bs, s->l2_table_cache, l2_offset, (void**) l2_table);
@@ -163,7 +163,7 @@ static int l2_load(BlockDriverState *bs, uint64_t l2_offset,
#define L1_ENTRIES_PER_SECTOR (512 / 8)
int qcow2_write_l1_entry(BlockDriverState *bs, int l1_index)
{
- BDRVQcowState *s = bs->opaque;
+ BDRVQcow2State *s = bs->opaque;
uint64_t buf[L1_ENTRIES_PER_SECTOR] = { 0 };
int l1_start_index;
int i, ret;
@@ -203,7 +203,7 @@ int qcow2_write_l1_entry(BlockDriverState *bs, int l1_index)
static int l2_allocate(BlockDriverState *bs, int l1_index, uint64_t **table)
{
- BDRVQcowState *s = bs->opaque;
+ BDRVQcow2State *s = bs->opaque;
uint64_t old_l2_offset;
uint64_t *l2_table = NULL;
int64_t l2_offset;
@@ -339,7 +339,7 @@ static int count_contiguous_free_clusters(uint64_t nb_clusters, uint64_t *l2_tab
/* The crypt function is compatible with the linux cryptoloop
algorithm for < 4 GB images. NOTE: out_buf == in_buf is
supported */
-int qcow2_encrypt_sectors(BDRVQcowState *s, int64_t sector_num,
+int qcow2_encrypt_sectors(BDRVQcow2State *s, int64_t sector_num,
uint8_t *out_buf, const uint8_t *in_buf,
int nb_sectors, bool enc,
Error **errp)
@@ -387,7 +387,7 @@ static int coroutine_fn copy_sectors(BlockDriverState *bs,
uint64_t cluster_offset,
int n_start, int n_end)
{
- BDRVQcowState *s = bs->opaque;
+ BDRVQcow2State *s = bs->opaque;
QEMUIOVector qiov;
struct iovec iov;
int n, ret;
@@ -469,7 +469,7 @@ out:
int qcow2_get_cluster_offset(BlockDriverState *bs, uint64_t offset,
int *num, uint64_t *cluster_offset)
{
- BDRVQcowState *s = bs->opaque;
+ BDRVQcow2State *s = bs->opaque;
unsigned int l2_index;
uint64_t l1_index, l2_offset, *l2_table;
int l1_bits, c;
@@ -606,7 +606,7 @@ static int get_cluster_table(BlockDriverState *bs, uint64_t offset,
uint64_t **new_l2_table,
int *new_l2_index)
{
- BDRVQcowState *s = bs->opaque;
+ BDRVQcow2State *s = bs->opaque;
unsigned int l2_index;
uint64_t l1_index, l2_offset;
uint64_t *l2_table = NULL;
@@ -680,7 +680,7 @@ uint64_t qcow2_alloc_compressed_cluster_offset(BlockDriverState *bs,
uint64_t offset,
int compressed_size)
{
- BDRVQcowState *s = bs->opaque;
+ BDRVQcow2State *s = bs->opaque;
int l2_index, ret;
uint64_t *l2_table;
int64_t cluster_offset;
@@ -725,7 +725,7 @@ uint64_t qcow2_alloc_compressed_cluster_offset(BlockDriverState *bs,
static int perform_cow(BlockDriverState *bs, QCowL2Meta *m, Qcow2COWRegion *r)
{
- BDRVQcowState *s = bs->opaque;
+ BDRVQcow2State *s = bs->opaque;
int ret;
if (r->nb_sectors == 0) {
@@ -754,7 +754,7 @@ static int perform_cow(BlockDriverState *bs, QCowL2Meta *m, Qcow2COWRegion *r)
int qcow2_alloc_cluster_link_l2(BlockDriverState *bs, QCowL2Meta *m)
{
- BDRVQcowState *s = bs->opaque;
+ BDRVQcow2State *s = bs->opaque;
int i, j = 0, l2_index, ret;
uint64_t *old_cluster, *l2_table;
uint64_t cluster_offset = m->alloc_offset;
@@ -837,7 +837,7 @@ err:
* write, but require COW to be performed (this includes yet unallocated space,
* which must copy from the backing file)
*/
-static int count_cow_clusters(BDRVQcowState *s, int nb_clusters,
+static int count_cow_clusters(BDRVQcow2State *s, int nb_clusters,
uint64_t *l2_table, int l2_index)
{
int i;
@@ -883,7 +883,7 @@ out:
static int handle_dependencies(BlockDriverState *bs, uint64_t guest_offset,
uint64_t *cur_bytes, QCowL2Meta **m)
{
- BDRVQcowState *s = bs->opaque;
+ BDRVQcow2State *s = bs->opaque;
QCowL2Meta *old_alloc;
uint64_t bytes = *cur_bytes;
@@ -956,7 +956,7 @@ static int handle_dependencies(BlockDriverState *bs, uint64_t guest_offset,
static int handle_copied(BlockDriverState *bs, uint64_t guest_offset,
uint64_t *host_offset, uint64_t *bytes, QCowL2Meta **m)
{
- BDRVQcowState *s = bs->opaque;
+ BDRVQcow2State *s = bs->opaque;
int l2_index;
uint64_t cluster_offset;
uint64_t *l2_table;
@@ -1063,7 +1063,7 @@ out:
static int do_alloc_cluster_offset(BlockDriverState *bs, uint64_t guest_offset,
uint64_t *host_offset, unsigned int *nb_clusters)
{
- BDRVQcowState *s = bs->opaque;
+ BDRVQcow2State *s = bs->opaque;
trace_qcow2_do_alloc_clusters_offset(qemu_coroutine_self(), guest_offset,
*host_offset, *nb_clusters);
@@ -1111,7 +1111,7 @@ static int do_alloc_cluster_offset(BlockDriverState *bs, uint64_t guest_offset,
static int handle_alloc(BlockDriverState *bs, uint64_t guest_offset,
uint64_t *host_offset, uint64_t *bytes, QCowL2Meta **m)
{
- BDRVQcowState *s = bs->opaque;
+ BDRVQcow2State *s = bs->opaque;
int l2_index;
uint64_t *l2_table;
uint64_t entry;
@@ -1263,7 +1263,7 @@ fail:
int qcow2_alloc_cluster_offset(BlockDriverState *bs, uint64_t offset,
int *num, uint64_t *host_offset, QCowL2Meta **m)
{
- BDRVQcowState *s = bs->opaque;
+ BDRVQcow2State *s = bs->opaque;
uint64_t start, remaining;
uint64_t cluster_offset;
uint64_t cur_bytes;
@@ -1397,7 +1397,7 @@ static int decompress_buffer(uint8_t *out_buf, int out_buf_size,
int qcow2_decompress_cluster(BlockDriverState *bs, uint64_t cluster_offset)
{
- BDRVQcowState *s = bs->opaque;
+ BDRVQcow2State *s = bs->opaque;
int ret, csize, nb_csectors, sector_offset;
uint64_t coffset;
@@ -1428,7 +1428,7 @@ int qcow2_decompress_cluster(BlockDriverState *bs, uint64_t cluster_offset)
static int discard_single_l2(BlockDriverState *bs, uint64_t offset,
unsigned int nb_clusters, enum qcow2_discard_type type, bool full_discard)
{
- BDRVQcowState *s = bs->opaque;
+ BDRVQcow2State *s = bs->opaque;
uint64_t *l2_table;
int l2_index;
int ret;
@@ -1501,7 +1501,7 @@ static int discard_single_l2(BlockDriverState *bs, uint64_t offset,
int qcow2_discard_clusters(BlockDriverState *bs, uint64_t offset,
int nb_sectors, enum qcow2_discard_type type, bool full_discard)
{
- BDRVQcowState *s = bs->opaque;
+ BDRVQcow2State *s = bs->opaque;
uint64_t end_offset;
unsigned int nb_clusters;
int ret;
@@ -1547,7 +1547,7 @@ fail:
static int zero_single_l2(BlockDriverState *bs, uint64_t offset,
unsigned int nb_clusters)
{
- BDRVQcowState *s = bs->opaque;
+ BDRVQcow2State *s = bs->opaque;
uint64_t *l2_table;
int l2_index;
int ret;
@@ -1583,7 +1583,7 @@ static int zero_single_l2(BlockDriverState *bs, uint64_t offset,
int qcow2_zero_clusters(BlockDriverState *bs, uint64_t offset, int nb_sectors)
{
- BDRVQcowState *s = bs->opaque;
+ BDRVQcow2State *s = bs->opaque;
unsigned int nb_clusters;
int ret;
@@ -1628,7 +1628,7 @@ static int expand_zero_clusters_in_l1(BlockDriverState *bs, uint64_t *l1_table,
int64_t l1_entries,
BlockDriverAmendStatusCB *status_cb)
{
- BDRVQcowState *s = bs->opaque;
+ BDRVQcow2State *s = bs->opaque;
bool is_active_l1 = (l1_table == s->l1_table);
uint64_t *l2_table = NULL;
int ret;
@@ -1815,7 +1815,7 @@ fail:
int qcow2_expand_zero_clusters(BlockDriverState *bs,
BlockDriverAmendStatusCB *status_cb)
{
- BDRVQcowState *s = bs->opaque;
+ BDRVQcow2State *s = bs->opaque;
uint64_t *l1_table = NULL;
int64_t l1_entries = 0, visited_l1_entries = 0;
int ret;
diff --git a/block/qcow2-refcount.c b/block/qcow2-refcount.c
index d8f0645..b780bb9 100644
--- a/block/qcow2-refcount.c
+++ b/block/qcow2-refcount.c
@@ -82,7 +82,7 @@ static Qcow2SetRefcountFunc *const set_refcount_funcs[] = {
int qcow2_refcount_init(BlockDriverState *bs)
{
- BDRVQcowState *s = bs->opaque;
+ BDRVQcow2State *s = bs->opaque;
unsigned int refcount_table_size2, i;
int ret;
@@ -116,7 +116,7 @@ int qcow2_refcount_init(BlockDriverState *bs)
void qcow2_refcount_close(BlockDriverState *bs)
{
- BDRVQcowState *s = bs->opaque;
+ BDRVQcow2State *s = bs->opaque;
g_free(s->refcount_table);
}
@@ -214,7 +214,7 @@ static int load_refcount_block(BlockDriverState *bs,
int64_t refcount_block_offset,
void **refcount_block)
{
- BDRVQcowState *s = bs->opaque;
+ BDRVQcow2State *s = bs->opaque;
int ret;
BLKDBG_EVENT(bs->file, BLKDBG_REFBLOCK_LOAD);
@@ -231,7 +231,7 @@ static int load_refcount_block(BlockDriverState *bs,
int qcow2_get_refcount(BlockDriverState *bs, int64_t cluster_index,
uint64_t *refcount)
{
- BDRVQcowState *s = bs->opaque;
+ BDRVQcow2State *s = bs->opaque;
uint64_t refcount_table_index, block_index;
int64_t refcount_block_offset;
int ret;
@@ -274,7 +274,7 @@ int qcow2_get_refcount(BlockDriverState *bs, int64_t cluster_index,
* Rounds the refcount table size up to avoid growing the table for each single
* refcount block that is allocated.
*/
-static unsigned int next_refcount_table_size(BDRVQcowState *s,
+static unsigned int next_refcount_table_size(BDRVQcow2State *s,
unsigned int min_size)
{
unsigned int min_clusters = (min_size >> (s->cluster_bits - 3)) + 1;
@@ -290,7 +290,7 @@ static unsigned int next_refcount_table_size(BDRVQcowState *s,
/* Checks if two offsets are described by the same refcount block */
-static int in_same_refcount_block(BDRVQcowState *s, uint64_t offset_a,
+static int in_same_refcount_block(BDRVQcow2State *s, uint64_t offset_a,
uint64_t offset_b)
{
uint64_t block_a = offset_a >> (s->cluster_bits + s->refcount_block_bits);
@@ -308,7 +308,7 @@ static int in_same_refcount_block(BDRVQcowState *s, uint64_t offset_a,
static int alloc_refcount_block(BlockDriverState *bs,
int64_t cluster_index, void **refcount_block)
{
- BDRVQcowState *s = bs->opaque;
+ BDRVQcow2State *s = bs->opaque;
unsigned int refcount_table_index;
int ret;
@@ -605,7 +605,7 @@ fail_block:
void qcow2_process_discards(BlockDriverState *bs, int ret)
{
- BDRVQcowState *s = bs->opaque;
+ BDRVQcow2State *s = bs->opaque;
Qcow2DiscardRegion *d, *next;
QTAILQ_FOREACH_SAFE(d, &s->discards, next, next) {
@@ -625,7 +625,7 @@ void qcow2_process_discards(BlockDriverState *bs, int ret)
static void update_refcount_discard(BlockDriverState *bs,
uint64_t offset, uint64_t length)
{
- BDRVQcowState *s = bs->opaque;
+ BDRVQcow2State *s = bs->opaque;
Qcow2DiscardRegion *d, *p, *next;
QTAILQ_FOREACH(d, &s->discards, next) {
@@ -682,7 +682,7 @@ static int QEMU_WARN_UNUSED_RESULT update_refcount(BlockDriverState *bs,
bool decrease,
enum qcow2_discard_type type)
{
- BDRVQcowState *s = bs->opaque;
+ BDRVQcow2State *s = bs->opaque;
int64_t start, last, cluster_offset;
void *refcount_block = NULL;
int64_t old_table_index = -1;
@@ -793,7 +793,7 @@ int qcow2_update_cluster_refcount(BlockDriverState *bs,
uint64_t addend, bool decrease,
enum qcow2_discard_type type)
{
- BDRVQcowState *s = bs->opaque;
+ BDRVQcow2State *s = bs->opaque;
int ret;
ret = update_refcount(bs, cluster_index << s->cluster_bits, 1, addend,
@@ -815,7 +815,7 @@ int qcow2_update_cluster_refcount(BlockDriverState *bs,
/* return < 0 if error */
static int64_t alloc_clusters_noref(BlockDriverState *bs, uint64_t size)
{
- BDRVQcowState *s = bs->opaque;
+ BDRVQcow2State *s = bs->opaque;
uint64_t i, nb_clusters, refcount;
int ret;
@@ -878,7 +878,7 @@ int64_t qcow2_alloc_clusters(BlockDriverState *bs, uint64_t size)
int qcow2_alloc_clusters_at(BlockDriverState *bs, uint64_t offset,
int nb_clusters)
{
- BDRVQcowState *s = bs->opaque;
+ BDRVQcow2State *s = bs->opaque;
uint64_t cluster_index, refcount;
uint64_t i;
int ret;
@@ -916,7 +916,7 @@ int qcow2_alloc_clusters_at(BlockDriverState *bs, uint64_t offset,
contiguous sectors. size must be <= cluster_size */
int64_t qcow2_alloc_bytes(BlockDriverState *bs, int size)
{
- BDRVQcowState *s = bs->opaque;
+ BDRVQcow2State *s = bs->opaque;
int64_t offset;
size_t free_in_cluster;
int ret;
@@ -992,7 +992,7 @@ void qcow2_free_clusters(BlockDriverState *bs,
void qcow2_free_any_clusters(BlockDriverState *bs, uint64_t l2_entry,
int nb_clusters, enum qcow2_discard_type type)
{
- BDRVQcowState *s = bs->opaque;
+ BDRVQcow2State *s = bs->opaque;
switch (qcow2_get_cluster_type(l2_entry)) {
case QCOW2_CLUSTER_COMPRESSED:
@@ -1036,7 +1036,7 @@ void qcow2_free_any_clusters(BlockDriverState *bs, uint64_t l2_entry,
int qcow2_update_snapshot_refcount(BlockDriverState *bs,
int64_t l1_table_offset, int l1_size, int addend)
{
- BDRVQcowState *s = bs->opaque;
+ BDRVQcow2State *s = bs->opaque;
uint64_t *l1_table, *l2_table, l2_offset, offset, l1_size2, refcount;
bool l1_allocated = false;
int64_t old_offset, old_l2_offset;
@@ -1233,7 +1233,7 @@ fail:
/* refcount checking functions */
-static size_t refcount_array_byte_size(BDRVQcowState *s, uint64_t entries)
+static size_t refcount_array_byte_size(BDRVQcow2State *s, uint64_t entries)
{
/* This assertion holds because there is no way we can address more than
* 2^(64 - 9) clusters at once (with cluster size 512 = 2^9, and because
@@ -1256,7 +1256,7 @@ static size_t refcount_array_byte_size(BDRVQcowState *s, uint64_t entries)
* refcount array buffer will be aligned to a cluster boundary, and the newly
* allocated area will be zeroed.
*/
-static int realloc_refcount_array(BDRVQcowState *s, void **array,
+static int realloc_refcount_array(BDRVQcow2State *s, void **array,
int64_t *size, int64_t new_size)
{
size_t old_byte_size, new_byte_size;
@@ -1304,7 +1304,7 @@ static int inc_refcounts(BlockDriverState *bs,
int64_t *refcount_table_size,
int64_t offset, int64_t size)
{
- BDRVQcowState *s = bs->opaque;
+ BDRVQcow2State *s = bs->opaque;
uint64_t start, last, cluster_offset, k, refcount;
int ret;
@@ -1357,7 +1357,7 @@ static int check_refcounts_l2(BlockDriverState *bs, BdrvCheckResult *res,
int64_t *refcount_table_size, int64_t l2_offset,
int flags)
{
- BDRVQcowState *s = bs->opaque;
+ BDRVQcow2State *s = bs->opaque;
uint64_t *l2_table, l2_entry;
uint64_t next_contiguous_offset = 0;
int i, l2_size, nb_csectors, ret;
@@ -1477,7 +1477,7 @@ static int check_refcounts_l1(BlockDriverState *bs,
int64_t l1_table_offset, int l1_size,
int flags)
{
- BDRVQcowState *s = bs->opaque;
+ BDRVQcow2State *s = bs->opaque;
uint64_t *l1_table = NULL, l2_offset, l1_size2;
int i, ret;
@@ -1554,7 +1554,7 @@ fail:
static int check_oflag_copied(BlockDriverState *bs, BdrvCheckResult *res,
BdrvCheckMode fix)
{
- BDRVQcowState *s = bs->opaque;
+ BDRVQcow2State *s = bs->opaque;
uint64_t *l2_table = qemu_blockalign(bs, s->cluster_size);
int ret;
uint64_t refcount;
@@ -1673,7 +1673,7 @@ static int check_refblocks(BlockDriverState *bs, BdrvCheckResult *res,
BdrvCheckMode fix, bool *rebuild,
void **refcount_table, int64_t *nb_clusters)
{
- BDRVQcowState *s = bs->opaque;
+ BDRVQcow2State *s = bs->opaque;
int64_t i, size;
int ret;
@@ -1776,7 +1776,7 @@ static int calculate_refcounts(BlockDriverState *bs, BdrvCheckResult *res,
BdrvCheckMode fix, bool *rebuild,
void **refcount_table, int64_t *nb_clusters)
{
- BDRVQcowState *s = bs->opaque;
+ BDRVQcow2State *s = bs->opaque;
int64_t i;
QCowSnapshot *sn;
int ret;
@@ -1840,7 +1840,7 @@ static void compare_refcounts(BlockDriverState *bs, BdrvCheckResult *res,
int64_t *highest_cluster,
void *refcount_table, int64_t nb_clusters)
{
- BDRVQcowState *s = bs->opaque;
+ BDRVQcow2State *s = bs->opaque;
int64_t i;
uint64_t refcount1, refcount2;
int ret;
@@ -1917,7 +1917,7 @@ static int64_t alloc_clusters_imrt(BlockDriverState *bs,
int64_t *imrt_nb_clusters,
int64_t *first_free_cluster)
{
- BDRVQcowState *s = bs->opaque;
+ BDRVQcow2State *s = bs->opaque;
int64_t cluster = *first_free_cluster, i;
bool first_gap = true;
int contiguous_free_clusters;
@@ -1987,7 +1987,7 @@ static int rebuild_refcount_structure(BlockDriverState *bs,
void **refcount_table,
int64_t *nb_clusters)
{
- BDRVQcowState *s = bs->opaque;
+ BDRVQcow2State *s = bs->opaque;
int64_t first_free_cluster = 0, reftable_offset = -1, cluster = 0;
int64_t refblock_offset, refblock_start, refblock_index;
uint32_t reftable_size = 0;
@@ -2174,7 +2174,7 @@ fail:
int qcow2_check_refcounts(BlockDriverState *bs, BdrvCheckResult *res,
BdrvCheckMode fix)
{
- BDRVQcowState *s = bs->opaque;
+ BDRVQcow2State *s = bs->opaque;
BdrvCheckResult pre_compare_res;
int64_t size, highest_cluster, nb_clusters;
void *refcount_table = NULL;
@@ -2311,7 +2311,7 @@ fail:
int qcow2_check_metadata_overlap(BlockDriverState *bs, int ign, int64_t offset,
int64_t size)
{
- BDRVQcowState *s = bs->opaque;
+ BDRVQcow2State *s = bs->opaque;
int chk = s->overlap_check & ~ign;
int i, j;
diff --git a/block/qcow2-snapshot.c b/block/qcow2-snapshot.c
index b6f58c1..92f4dfc 100644
--- a/block/qcow2-snapshot.c
+++ b/block/qcow2-snapshot.c
@@ -29,7 +29,7 @@
void qcow2_free_snapshots(BlockDriverState *bs)
{
- BDRVQcowState *s = bs->opaque;
+ BDRVQcow2State *s = bs->opaque;
int i;
for(i = 0; i < s->nb_snapshots; i++) {
@@ -43,7 +43,7 @@ void qcow2_free_snapshots(BlockDriverState *bs)
int qcow2_read_snapshots(BlockDriverState *bs)
{
- BDRVQcowState *s = bs->opaque;
+ BDRVQcow2State *s = bs->opaque;
QCowSnapshotHeader h;
QCowSnapshotExtraData extra;
QCowSnapshot *sn;
@@ -136,7 +136,7 @@ fail:
/* add at the end of the file a new list of snapshots */
static int qcow2_write_snapshots(BlockDriverState *bs)
{
- BDRVQcowState *s = bs->opaque;
+ BDRVQcow2State *s = bs->opaque;
QCowSnapshot *sn;
QCowSnapshotHeader h;
QCowSnapshotExtraData extra;
@@ -278,7 +278,7 @@ fail:
static void find_new_snapshot_id(BlockDriverState *bs,
char *id_str, int id_str_size)
{
- BDRVQcowState *s = bs->opaque;
+ BDRVQcow2State *s = bs->opaque;
QCowSnapshot *sn;
int i;
unsigned long id, id_max = 0;
@@ -296,7 +296,7 @@ static int find_snapshot_by_id_and_name(BlockDriverState *bs,
const char *id,
const char *name)
{
- BDRVQcowState *s = bs->opaque;
+ BDRVQcow2State *s = bs->opaque;
int i;
if (id && name) {
@@ -338,7 +338,7 @@ static int find_snapshot_by_id_or_name(BlockDriverState *bs,
/* if no id is provided, a new one is constructed */
int qcow2_snapshot_create(BlockDriverState *bs, QEMUSnapshotInfo *sn_info)
{
- BDRVQcowState *s = bs->opaque;
+ BDRVQcow2State *s = bs->opaque;
QCowSnapshot *new_snapshot_list = NULL;
QCowSnapshot *old_snapshot_list = NULL;
QCowSnapshot sn1, *sn = &sn1;
@@ -461,7 +461,7 @@ fail:
/* copy the snapshot 'snapshot_name' into the current disk image */
int qcow2_snapshot_goto(BlockDriverState *bs, const char *snapshot_id)
{
- BDRVQcowState *s = bs->opaque;
+ BDRVQcow2State *s = bs->opaque;
QCowSnapshot *sn;
int i, snapshot_index;
int cur_l1_bytes, sn_l1_bytes;
@@ -587,7 +587,7 @@ int qcow2_snapshot_delete(BlockDriverState *bs,
const char *name,
Error **errp)
{
- BDRVQcowState *s = bs->opaque;
+ BDRVQcow2State *s = bs->opaque;
QCowSnapshot sn;
int snapshot_index, ret;
@@ -650,7 +650,7 @@ int qcow2_snapshot_delete(BlockDriverState *bs,
int qcow2_snapshot_list(BlockDriverState *bs, QEMUSnapshotInfo **psn_tab)
{
- BDRVQcowState *s = bs->opaque;
+ BDRVQcow2State *s = bs->opaque;
QEMUSnapshotInfo *sn_tab, *sn_info;
QCowSnapshot *sn;
int i;
@@ -683,7 +683,7 @@ int qcow2_snapshot_load_tmp(BlockDriverState *bs,
Error **errp)
{
int i, snapshot_index;
- BDRVQcowState *s = bs->opaque;
+ BDRVQcow2State *s = bs->opaque;
QCowSnapshot *sn;
uint64_t *new_l1_table;
int new_l1_bytes;
diff --git a/block/qcow2.c b/block/qcow2.c
index a707d8d..9b09e01 100644
--- a/block/qcow2.c
+++ b/block/qcow2.c
@@ -85,7 +85,7 @@ static int qcow2_read_extensions(BlockDriverState *bs, uint64_t start_offset,
uint64_t end_offset, void **p_feature_table,
Error **errp)
{
- BDRVQcowState *s = bs->opaque;
+ BDRVQcow2State *s = bs->opaque;
QCowExtension ext;
uint64_t offset;
int ret;
@@ -187,7 +187,7 @@ static int qcow2_read_extensions(BlockDriverState *bs, uint64_t start_offset,
static void cleanup_unknown_header_ext(BlockDriverState *bs)
{
- BDRVQcowState *s = bs->opaque;
+ BDRVQcow2State *s = bs->opaque;
Qcow2UnknownHeaderExtension *uext, *next;
QLIST_FOREACH_SAFE(uext, &s->unknown_header_ext, next, next) {
@@ -249,7 +249,7 @@ static void report_unsupported_feature(BlockDriverState *bs,
*/
int qcow2_mark_dirty(BlockDriverState *bs)
{
- BDRVQcowState *s = bs->opaque;
+ BDRVQcow2State *s = bs->opaque;
uint64_t val;
int ret;
@@ -282,7 +282,7 @@ int qcow2_mark_dirty(BlockDriverState *bs)
*/
static int qcow2_mark_clean(BlockDriverState *bs)
{
- BDRVQcowState *s = bs->opaque;
+ BDRVQcow2State *s = bs->opaque;
if (s->incompatible_features & QCOW2_INCOMPAT_DIRTY) {
int ret;
@@ -304,7 +304,7 @@ static int qcow2_mark_clean(BlockDriverState *bs)
*/
int qcow2_mark_corrupt(BlockDriverState *bs)
{
- BDRVQcowState *s = bs->opaque;
+ BDRVQcow2State *s = bs->opaque;
s->incompatible_features |= QCOW2_INCOMPAT_CORRUPT;
return qcow2_update_header(bs);
@@ -316,7 +316,7 @@ int qcow2_mark_corrupt(BlockDriverState *bs)
*/
int qcow2_mark_consistent(BlockDriverState *bs)
{
- BDRVQcowState *s = bs->opaque;
+ BDRVQcow2State *s = bs->opaque;
if (s->incompatible_features & QCOW2_INCOMPAT_CORRUPT) {
int ret = bdrv_flush(bs);
@@ -351,7 +351,7 @@ static int qcow2_check(BlockDriverState *bs, BdrvCheckResult *result,
static int validate_table_offset(BlockDriverState *bs, uint64_t offset,
uint64_t entries, size_t entry_len)
{
- BDRVQcowState *s = bs->opaque;
+ BDRVQcow2State *s = bs->opaque;
uint64_t size;
/* Use signed INT64_MAX as the maximum even for uint64_t header fields,
@@ -490,7 +490,7 @@ static const char *overlap_bool_option_names[QCOW2_OL_MAX_BITNR] = {
static void cache_clean_timer_cb(void *opaque)
{
BlockDriverState *bs = opaque;
- BDRVQcowState *s = bs->opaque;
+ BDRVQcow2State *s = bs->opaque;
qcow2_cache_clean_unused(bs, s->l2_table_cache);
qcow2_cache_clean_unused(bs, s->refcount_block_cache);
timer_mod(s->cache_clean_timer, qemu_clock_get_ms(QEMU_CLOCK_VIRTUAL) +
@@ -499,7 +499,7 @@ static void cache_clean_timer_cb(void *opaque)
static void cache_clean_timer_init(BlockDriverState *bs, AioContext *context)
{
- BDRVQcowState *s = bs->opaque;
+ BDRVQcow2State *s = bs->opaque;
if (s->cache_clean_interval > 0) {
s->cache_clean_timer = aio_timer_new(context, QEMU_CLOCK_VIRTUAL,
SCALE_MS, cache_clean_timer_cb,
@@ -511,7 +511,7 @@ static void cache_clean_timer_init(BlockDriverState *bs, AioContext *context)
static void cache_clean_timer_del(BlockDriverState *bs)
{
- BDRVQcowState *s = bs->opaque;
+ BDRVQcow2State *s = bs->opaque;
if (s->cache_clean_timer) {
timer_del(s->cache_clean_timer);
timer_free(s->cache_clean_timer);
@@ -534,7 +534,7 @@ static void read_cache_sizes(BlockDriverState *bs, QemuOpts *opts,
uint64_t *l2_cache_size,
uint64_t *refcount_cache_size, Error **errp)
{
- BDRVQcowState *s = bs->opaque;
+ BDRVQcow2State *s = bs->opaque;
uint64_t combined_cache_size;
bool l2_cache_size_set, refcount_cache_size_set, combined_cache_size_set;
@@ -592,7 +592,7 @@ static void read_cache_sizes(BlockDriverState *bs, QemuOpts *opts,
static int qcow2_open(BlockDriverState *bs, QDict *options, int flags,
Error **errp)
{
- BDRVQcowState *s = bs->opaque;
+ BDRVQcow2State *s = bs->opaque;
unsigned int len, i;
int ret = 0;
QCowHeader header;
@@ -1086,14 +1086,14 @@ static int qcow2_open(BlockDriverState *bs, QDict *options, int flags,
static void qcow2_refresh_limits(BlockDriverState *bs, Error **errp)
{
- BDRVQcowState *s = bs->opaque;
+ BDRVQcow2State *s = bs->opaque;
bs->bl.write_zeroes_alignment = s->cluster_sectors;
}
static int qcow2_set_key(BlockDriverState *bs, const char *key)
{
- BDRVQcowState *s = bs->opaque;
+ BDRVQcow2State *s = bs->opaque;
uint8_t keybuf[16];
int len, i;
Error *err = NULL;
@@ -1151,7 +1151,7 @@ static int qcow2_reopen_prepare(BDRVReopenState *state,
static int64_t coroutine_fn qcow2_co_get_block_status(BlockDriverState *bs,
int64_t sector_num, int nb_sectors, int *pnum)
{
- BDRVQcowState *s = bs->opaque;
+ BDRVQcow2State *s = bs->opaque;
uint64_t cluster_offset;
int index_in_cluster, ret;
int64_t status = 0;
@@ -1198,7 +1198,7 @@ int qcow2_backing_read1(BlockDriverState *bs, QEMUIOVector *qiov,
static coroutine_fn int qcow2_co_readv(BlockDriverState *bs, int64_t sector_num,
int remaining_sectors, QEMUIOVector *qiov)
{
- BDRVQcowState *s = bs->opaque;
+ BDRVQcow2State *s = bs->opaque;
int index_in_cluster, n1;
int ret;
int cur_nr_sectors; /* number of sectors in current iteration */
@@ -1360,7 +1360,7 @@ static coroutine_fn int qcow2_co_writev(BlockDriverState *bs,
int remaining_sectors,
QEMUIOVector *qiov)
{
- BDRVQcowState *s = bs->opaque;
+ BDRVQcow2State *s = bs->opaque;
int index_in_cluster;
int ret;
int cur_nr_sectors; /* number of sectors in current iteration */
@@ -1506,7 +1506,7 @@ fail:
static void qcow2_close(BlockDriverState *bs)
{
- BDRVQcowState *s = bs->opaque;
+ BDRVQcow2State *s = bs->opaque;
qemu_vfree(s->l1_table);
/* else pre-write overlap checks in cache_destroy may crash */
s->l1_table = NULL;
@@ -1552,7 +1552,7 @@ static void qcow2_close(BlockDriverState *bs)
static void qcow2_invalidate_cache(BlockDriverState *bs, Error **errp)
{
- BDRVQcowState *s = bs->opaque;
+ BDRVQcow2State *s = bs->opaque;
int flags = s->flags;
QCryptoCipher *cipher = NULL;
QDict *options;
@@ -1575,7 +1575,7 @@ static void qcow2_invalidate_cache(BlockDriverState *bs, Error **errp)
return;
}
- memset(s, 0, sizeof(BDRVQcowState));
+ memset(s, 0, sizeof(BDRVQcow2State));
options = qdict_clone_shallow(bs->options);
ret = qcow2_open(bs, options, flags, &local_err);
@@ -1622,7 +1622,7 @@ static size_t header_ext_add(char *buf, uint32_t magic, const void *s,
*/
int qcow2_update_header(BlockDriverState *bs)
{
- BDRVQcowState *s = bs->opaque;
+ BDRVQcow2State *s = bs->opaque;
QCowHeader *header;
char *buf;
size_t buflen = s->cluster_size;
@@ -1791,7 +1791,7 @@ fail:
static int qcow2_change_backing_file(BlockDriverState *bs,
const char *backing_file, const char *backing_fmt)
{
- BDRVQcowState *s = bs->opaque;
+ BDRVQcow2State *s = bs->opaque;
pstrcpy(bs->backing_file, sizeof(bs->backing_file), backing_file ?: "");
pstrcpy(bs->backing_format, sizeof(bs->backing_format), backing_fmt ?: "");
@@ -2074,7 +2074,7 @@ static int qcow2_create2(const char *filename, int64_t total_size,
/* And if we're supposed to preallocate metadata, do that now */
if (prealloc != PREALLOC_MODE_OFF) {
- BDRVQcowState *s = bs->opaque;
+ BDRVQcow2State *s = bs->opaque;
qemu_co_mutex_lock(&s->lock);
ret = preallocate(bs);
qemu_co_mutex_unlock(&s->lock);
@@ -2209,7 +2209,7 @@ static coroutine_fn int qcow2_co_write_zeroes(BlockDriverState *bs,
int64_t sector_num, int nb_sectors, BdrvRequestFlags flags)
{
int ret;
- BDRVQcowState *s = bs->opaque;
+ BDRVQcow2State *s = bs->opaque;
/* Emulate misaligned zero writes */
if (sector_num % s->cluster_sectors || nb_sectors % s->cluster_sectors) {
@@ -2229,7 +2229,7 @@ static coroutine_fn int qcow2_co_discard(BlockDriverState *bs,
int64_t sector_num, int nb_sectors)
{
int ret;
- BDRVQcowState *s = bs->opaque;
+ BDRVQcow2State *s = bs->opaque;
qemu_co_mutex_lock(&s->lock);
ret = qcow2_discard_clusters(bs, sector_num << BDRV_SECTOR_BITS,
@@ -2240,7 +2240,7 @@ static coroutine_fn int qcow2_co_discard(BlockDriverState *bs,
static int qcow2_truncate(BlockDriverState *bs, int64_t offset)
{
- BDRVQcowState *s = bs->opaque;
+ BDRVQcow2State *s = bs->opaque;
int64_t new_l1_size;
int ret;
@@ -2284,7 +2284,7 @@ static int qcow2_truncate(BlockDriverState *bs, int64_t offset)
static int qcow2_write_compressed(BlockDriverState *bs, int64_t sector_num,
const uint8_t *buf, int nb_sectors)
{
- BDRVQcowState *s = bs->opaque;
+ BDRVQcow2State *s = bs->opaque;
z_stream strm;
int ret, out_len;
uint8_t *out_buf;
@@ -2375,7 +2375,7 @@ fail:
static int make_completely_empty(BlockDriverState *bs)
{
- BDRVQcowState *s = bs->opaque;
+ BDRVQcow2State *s = bs->opaque;
int ret, l1_clusters;
int64_t offset;
uint64_t *new_reftable = NULL;
@@ -2523,7 +2523,7 @@ fail:
static int qcow2_make_empty(BlockDriverState *bs)
{
- BDRVQcowState *s = bs->opaque;
+ BDRVQcow2State *s = bs->opaque;
uint64_t start_sector;
int sector_step = INT_MAX / BDRV_SECTOR_SIZE;
int l1_clusters, ret = 0;
@@ -2564,7 +2564,7 @@ static int qcow2_make_empty(BlockDriverState *bs)
static coroutine_fn int qcow2_co_flush_to_os(BlockDriverState *bs)
{
- BDRVQcowState *s = bs->opaque;
+ BDRVQcow2State *s = bs->opaque;
int ret;
qemu_co_mutex_lock(&s->lock);
@@ -2588,7 +2588,7 @@ static coroutine_fn int qcow2_co_flush_to_os(BlockDriverState *bs)
static int qcow2_get_info(BlockDriverState *bs, BlockDriverInfo *bdi)
{
- BDRVQcowState *s = bs->opaque;
+ BDRVQcow2State *s = bs->opaque;
bdi->unallocated_blocks_are_zero = true;
bdi->can_write_zeroes_with_unmap = (s->qcow_version >= 3);
bdi->cluster_size = s->cluster_size;
@@ -2598,7 +2598,7 @@ static int qcow2_get_info(BlockDriverState *bs, BlockDriverInfo *bdi)
static ImageInfoSpecific *qcow2_get_specific_info(BlockDriverState *bs)
{
- BDRVQcowState *s = bs->opaque;
+ BDRVQcow2State *s = bs->opaque;
ImageInfoSpecific *spec_info = g_new(ImageInfoSpecific, 1);
*spec_info = (ImageInfoSpecific){
@@ -2631,7 +2631,7 @@ static ImageInfoSpecific *qcow2_get_specific_info(BlockDriverState *bs)
#if 0
static void dump_refcounts(BlockDriverState *bs)
{
- BDRVQcowState *s = bs->opaque;
+ BDRVQcow2State *s = bs->opaque;
int64_t nb_clusters, k, k1, size;
int refcount;
@@ -2652,7 +2652,7 @@ static void dump_refcounts(BlockDriverState *bs)
static int qcow2_save_vmstate(BlockDriverState *bs, QEMUIOVector *qiov,
int64_t pos)
{
- BDRVQcowState *s = bs->opaque;
+ BDRVQcow2State *s = bs->opaque;
int64_t total_sectors = bs->total_sectors;
bool zero_beyond_eof = bs->zero_beyond_eof;
int ret;
@@ -2673,7 +2673,7 @@ static int qcow2_save_vmstate(BlockDriverState *bs, QEMUIOVector *qiov,
static int qcow2_load_vmstate(BlockDriverState *bs, uint8_t *buf,
int64_t pos, int size)
{
- BDRVQcowState *s = bs->opaque;
+ BDRVQcow2State *s = bs->opaque;
bool zero_beyond_eof = bs->zero_beyond_eof;
int ret;
@@ -2692,7 +2692,7 @@ static int qcow2_load_vmstate(BlockDriverState *bs, uint8_t *buf,
static int qcow2_downgrade(BlockDriverState *bs, int target_version,
BlockDriverAmendStatusCB *status_cb)
{
- BDRVQcowState *s = bs->opaque;
+ BDRVQcow2State *s = bs->opaque;
int current_version = s->qcow_version;
int ret;
@@ -2756,7 +2756,7 @@ static int qcow2_downgrade(BlockDriverState *bs, int target_version,
static int qcow2_amend_options(BlockDriverState *bs, QemuOpts *opts,
BlockDriverAmendStatusCB *status_cb)
{
- BDRVQcowState *s = bs->opaque;
+ BDRVQcow2State *s = bs->opaque;
int old_version = s->qcow_version, new_version = old_version;
uint64_t new_size = 0;
const char *backing_file = NULL, *backing_format = NULL;
@@ -2903,7 +2903,7 @@ static int qcow2_amend_options(BlockDriverState *bs, QemuOpts *opts,
void qcow2_signal_corruption(BlockDriverState *bs, bool fatal, int64_t offset,
int64_t size, const char *message_format, ...)
{
- BDRVQcowState *s = bs->opaque;
+ BDRVQcow2State *s = bs->opaque;
const char *node_name;
char *message;
va_list ap;
@@ -3004,7 +3004,7 @@ static QemuOptsList qcow2_create_opts = {
BlockDriver bdrv_qcow2 = {
.format_name = "qcow2",
- .instance_size = sizeof(BDRVQcowState),
+ .instance_size = sizeof(BDRVQcow2State),
.bdrv_probe = qcow2_probe,
.bdrv_open = qcow2_open,
.bdrv_close = qcow2_close,
diff --git a/block/qcow2.h b/block/qcow2.h
index 71dafd6..61f1b57 100644
--- a/block/qcow2.h
+++ b/block/qcow2.h
@@ -222,7 +222,7 @@ typedef uint64_t Qcow2GetRefcountFunc(const void *refcount_array,
typedef void Qcow2SetRefcountFunc(void *refcount_array,
uint64_t index, uint64_t value);
-typedef struct BDRVQcowState {
+typedef struct BDRVQcow2State {
int cluster_bits;
int cluster_size;
int cluster_sectors;
@@ -293,7 +293,7 @@ typedef struct BDRVQcowState {
* override) */
char *image_backing_file;
char *image_backing_format;
-} BDRVQcowState;
+} BDRVQcow2State;
struct QCowAIOCB;
@@ -405,28 +405,28 @@ typedef enum QCow2MetadataOverlap {
#define REFT_OFFSET_MASK 0xfffffffffffffe00ULL
-static inline int64_t start_of_cluster(BDRVQcowState *s, int64_t offset)
+static inline int64_t start_of_cluster(BDRVQcow2State *s, int64_t offset)
{
return offset & ~(s->cluster_size - 1);
}
-static inline int64_t offset_into_cluster(BDRVQcowState *s, int64_t offset)
+static inline int64_t offset_into_cluster(BDRVQcow2State *s, int64_t offset)
{
return offset & (s->cluster_size - 1);
}
-static inline int size_to_clusters(BDRVQcowState *s, int64_t size)
+static inline int size_to_clusters(BDRVQcow2State *s, int64_t size)
{
return (size + (s->cluster_size - 1)) >> s->cluster_bits;
}
-static inline int64_t size_to_l1(BDRVQcowState *s, int64_t size)
+static inline int64_t size_to_l1(BDRVQcow2State *s, int64_t size)
{
int shift = s->cluster_bits + s->l2_bits;
return (size + (1ULL << shift) - 1) >> shift;
}
-static inline int offset_to_l2_index(BDRVQcowState *s, int64_t offset)
+static inline int offset_to_l2_index(BDRVQcow2State *s, int64_t offset)
{
return (offset >> s->cluster_bits) & (s->l2_size - 1);
}
@@ -437,12 +437,12 @@ static inline int64_t align_offset(int64_t offset, int n)
return offset;
}
-static inline int64_t qcow2_vm_state_offset(BDRVQcowState *s)
+static inline int64_t qcow2_vm_state_offset(BDRVQcow2State *s)
{
return (int64_t)s->l1_vm_state_index << (s->cluster_bits + s->l2_bits);
}
-static inline uint64_t qcow2_max_refcount_clusters(BDRVQcowState *s)
+static inline uint64_t qcow2_max_refcount_clusters(BDRVQcow2State *s)
{
return QCOW_MAX_REFTABLE_SIZE >> s->cluster_bits;
}
@@ -461,7 +461,7 @@ static inline int qcow2_get_cluster_type(uint64_t l2_entry)
}
/* Check whether refcounts are eager or lazy */
-static inline bool qcow2_need_accurate_refcounts(BDRVQcowState *s)
+static inline bool qcow2_need_accurate_refcounts(BDRVQcow2State *s)
{
return !(s->incompatible_features & QCOW2_INCOMPAT_DIRTY);
}
@@ -537,7 +537,7 @@ int qcow2_grow_l1_table(BlockDriverState *bs, uint64_t min_size,
int qcow2_write_l1_entry(BlockDriverState *bs, int l1_index);
void qcow2_l2_cache_reset(BlockDriverState *bs);
int qcow2_decompress_cluster(BlockDriverState *bs, uint64_t cluster_offset);
-int qcow2_encrypt_sectors(BDRVQcowState *s, int64_t sector_num,
+int qcow2_encrypt_sectors(BDRVQcow2State *s, int64_t sector_num,
uint8_t *out_buf, const uint8_t *in_buf,
int nb_sectors, bool enc, Error **errp);
--
1.8.3.1
^ permalink raw reply related [flat|nested] 34+ messages in thread* [Qemu-devel] [PULL 07/23] block: Allow specifying driver-specific options to reopen
2015-09-11 19:40 [Qemu-devel] [PULL 00/23] Block layer patches Kevin Wolf
` (5 preceding siblings ...)
2015-09-11 19:40 ` [Qemu-devel] [PULL 06/23] qcow2: Rename BDRVQcowState to BDRVQcow2State Kevin Wolf
@ 2015-09-11 19:40 ` Kevin Wolf
2015-09-11 19:40 ` [Qemu-devel] [PULL 08/23] qemu-io: Remove duplicate 'open' error message Kevin Wolf
` (16 subsequent siblings)
23 siblings, 0 replies; 34+ messages in thread
From: Kevin Wolf @ 2015-09-11 19:40 UTC (permalink / raw)
To: qemu-block; +Cc: kwolf, qemu-devel
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Reviewed-by: Max Reitz <mreitz@redhat.com>
---
block.c | 42 +++++++++++++++++++++++++++++++++++++++---
block/commit.c | 4 ++--
include/block/block.h | 4 +++-
3 files changed, 44 insertions(+), 6 deletions(-)
diff --git a/block.c b/block.c
index 3de83e6..6268e37 100644
--- a/block.c
+++ b/block.c
@@ -1636,6 +1636,9 @@ typedef struct BlockReopenQueueEntry {
*
* bs is the BlockDriverState to add to the reopen queue.
*
+ * options contains the changed options for the associated bs
+ * (the BlockReopenQueue takes ownership)
+ *
* flags contains the open flags for the associated bs
*
* returns a pointer to bs_queue, which is either the newly allocated
@@ -1643,18 +1646,28 @@ typedef struct BlockReopenQueueEntry {
*
*/
BlockReopenQueue *bdrv_reopen_queue(BlockReopenQueue *bs_queue,
- BlockDriverState *bs, int flags)
+ BlockDriverState *bs,
+ QDict *options, int flags)
{
assert(bs != NULL);
BlockReopenQueueEntry *bs_entry;
BdrvChild *child;
+ QDict *old_options;
if (bs_queue == NULL) {
bs_queue = g_new0(BlockReopenQueue, 1);
QSIMPLEQ_INIT(bs_queue);
}
+ if (!options) {
+ options = qdict_new();
+ }
+
+ old_options = qdict_clone_shallow(bs->options);
+ qdict_join(options, old_options, false);
+ QDECREF(old_options);
+
/* bdrv_open() masks this flag out */
flags &= ~BDRV_O_PROTOCOL;
@@ -1666,13 +1679,15 @@ BlockReopenQueue *bdrv_reopen_queue(BlockReopenQueue *bs_queue,
}
child_flags = child->role->inherit_flags(flags);
- bdrv_reopen_queue(bs_queue, child->bs, child_flags);
+ /* TODO Pass down child flags (backing.*, extents.*, ...) */
+ bdrv_reopen_queue(bs_queue, child->bs, NULL, child_flags);
}
bs_entry = g_new0(BlockReopenQueueEntry, 1);
QSIMPLEQ_INSERT_TAIL(bs_queue, bs_entry, entry);
bs_entry->state.bs = bs;
+ bs_entry->state.options = options;
bs_entry->state.flags = flags;
return bs_queue;
@@ -1725,6 +1740,7 @@ cleanup:
if (ret && bs_entry->prepared) {
bdrv_reopen_abort(&bs_entry->state);
}
+ QDECREF(bs_entry->state.options);
g_free(bs_entry);
}
g_free(bs_queue);
@@ -1737,7 +1753,7 @@ int bdrv_reopen(BlockDriverState *bs, int bdrv_flags, Error **errp)
{
int ret = -1;
Error *local_err = NULL;
- BlockReopenQueue *queue = bdrv_reopen_queue(NULL, bs, bdrv_flags);
+ BlockReopenQueue *queue = bdrv_reopen_queue(NULL, bs, NULL, bdrv_flags);
ret = bdrv_reopen_multiple(queue, &local_err);
if (local_err != NULL) {
@@ -1813,6 +1829,26 @@ int bdrv_reopen_prepare(BDRVReopenState *reopen_state, BlockReopenQueue *queue,
goto error;
}
+ /* Options that are not handled are only okay if they are unchanged
+ * compared to the old state. It is expected that some options are only
+ * used for the initial open, but not reopen (e.g. filename) */
+ if (qdict_size(reopen_state->options)) {
+ const QDictEntry *entry = qdict_first(reopen_state->options);
+
+ do {
+ QString *new_obj = qobject_to_qstring(entry->value);
+ const char *new = qstring_get_str(new_obj);
+ const char *old = qdict_get_try_str(reopen_state->bs->options,
+ entry->key);
+
+ if (!old || strcmp(new, old)) {
+ error_setg(errp, "Cannot change the option '%s'", entry->key);
+ ret = -EINVAL;
+ goto error;
+ }
+ } while ((entry = qdict_next(reopen_state->options, entry)));
+ }
+
ret = 0;
error:
diff --git a/block/commit.c b/block/commit.c
index 7312a5b..d12e26f 100644
--- a/block/commit.c
+++ b/block/commit.c
@@ -236,11 +236,11 @@ void commit_start(BlockDriverState *bs, BlockDriverState *base,
/* convert base & overlay_bs to r/w, if necessary */
if (!(orig_base_flags & BDRV_O_RDWR)) {
- reopen_queue = bdrv_reopen_queue(reopen_queue, base,
+ reopen_queue = bdrv_reopen_queue(reopen_queue, base, NULL,
orig_base_flags | BDRV_O_RDWR);
}
if (!(orig_overlay_flags & BDRV_O_RDWR)) {
- reopen_queue = bdrv_reopen_queue(reopen_queue, overlay_bs,
+ reopen_queue = bdrv_reopen_queue(reopen_queue, overlay_bs, NULL,
orig_overlay_flags | BDRV_O_RDWR);
}
if (reopen_queue) {
diff --git a/include/block/block.h b/include/block/block.h
index e539194..ef67353 100644
--- a/include/block/block.h
+++ b/include/block/block.h
@@ -147,6 +147,7 @@ typedef QSIMPLEQ_HEAD(BlockReopenQueue, BlockReopenQueueEntry) BlockReopenQueue;
typedef struct BDRVReopenState {
BlockDriverState *bs;
int flags;
+ QDict *options;
void *opaque;
} BDRVReopenState;
@@ -218,7 +219,8 @@ int bdrv_append_temp_snapshot(BlockDriverState *bs, int flags, Error **errp);
int bdrv_open(BlockDriverState **pbs, const char *filename,
const char *reference, QDict *options, int flags, Error **errp);
BlockReopenQueue *bdrv_reopen_queue(BlockReopenQueue *bs_queue,
- BlockDriverState *bs, int flags);
+ BlockDriverState *bs,
+ QDict *options, int flags);
int bdrv_reopen_multiple(BlockReopenQueue *bs_queue, Error **errp);
int bdrv_reopen(BlockDriverState *bs, int bdrv_flags, Error **errp);
int bdrv_reopen_prepare(BDRVReopenState *reopen_state,
--
1.8.3.1
^ permalink raw reply related [flat|nested] 34+ messages in thread* [Qemu-devel] [PULL 08/23] qemu-io: Remove duplicate 'open' error message
2015-09-11 19:40 [Qemu-devel] [PULL 00/23] Block layer patches Kevin Wolf
` (6 preceding siblings ...)
2015-09-11 19:40 ` [Qemu-devel] [PULL 07/23] block: Allow specifying driver-specific options to reopen Kevin Wolf
@ 2015-09-11 19:40 ` Kevin Wolf
2015-09-11 19:40 ` [Qemu-devel] [PULL 09/23] qemu-io: Add command 'reopen' Kevin Wolf
` (15 subsequent siblings)
23 siblings, 0 replies; 34+ messages in thread
From: Kevin Wolf @ 2015-09-11 19:40 UTC (permalink / raw)
To: qemu-block; +Cc: kwolf, qemu-devel
qemu_opts_parse_noisily() already prints an error message with the exact
reason why the parsing failed. No need to add another less specific one.
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Reviewed-by: Max Reitz <mreitz@redhat.com>
---
qemu-io.c | 1 -
1 file changed, 1 deletion(-)
diff --git a/qemu-io.c b/qemu-io.c
index f1e3a67..269f17c 100644
--- a/qemu-io.c
+++ b/qemu-io.c
@@ -156,7 +156,6 @@ static int open_f(BlockBackend *blk, int argc, char **argv)
break;
case 'o':
if (!qemu_opts_parse_noisily(&empty_opts, optarg, false)) {
- printf("could not parse option list -- %s\n", optarg);
qemu_opts_reset(&empty_opts);
return 0;
}
--
1.8.3.1
^ permalink raw reply related [flat|nested] 34+ messages in thread* [Qemu-devel] [PULL 09/23] qemu-io: Add command 'reopen'
2015-09-11 19:40 [Qemu-devel] [PULL 00/23] Block layer patches Kevin Wolf
` (7 preceding siblings ...)
2015-09-11 19:40 ` [Qemu-devel] [PULL 08/23] qemu-io: Remove duplicate 'open' error message Kevin Wolf
@ 2015-09-11 19:40 ` Kevin Wolf
2015-09-11 19:40 ` [Qemu-devel] [PULL 10/23] qcow2: Improve error message Kevin Wolf
` (14 subsequent siblings)
23 siblings, 0 replies; 34+ messages in thread
From: Kevin Wolf @ 2015-09-11 19:40 UTC (permalink / raw)
To: qemu-block; +Cc: kwolf, qemu-devel
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Reviewed-by: Max Reitz <mreitz@redhat.com>
---
qemu-io-cmds.c | 90 ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
1 file changed, 90 insertions(+)
diff --git a/qemu-io-cmds.c b/qemu-io-cmds.c
index 53477e1..d6572a8 100644
--- a/qemu-io-cmds.c
+++ b/qemu-io-cmds.c
@@ -1979,6 +1979,95 @@ static const cmdinfo_t map_cmd = {
.oneline = "prints the allocated areas of a file",
};
+static void reopen_help(void)
+{
+ printf(
+"\n"
+" Changes the open options of an already opened image\n"
+"\n"
+" Example:\n"
+" 'reopen -o lazy-refcounts=on' - activates lazy refcount writeback on a qcow2 image\n"
+"\n"
+" -r, -- Reopen the image read-only\n"
+" -c, -- Change the cache mode to the given value\n"
+" -o, -- Changes block driver options (cf. 'open' command)\n"
+"\n");
+}
+
+static int reopen_f(BlockBackend *blk, int argc, char **argv);
+
+static QemuOptsList reopen_opts = {
+ .name = "reopen",
+ .merge_lists = true,
+ .head = QTAILQ_HEAD_INITIALIZER(reopen_opts.head),
+ .desc = {
+ /* no elements => accept any params */
+ { /* end of list */ }
+ },
+};
+
+static const cmdinfo_t reopen_cmd = {
+ .name = "reopen",
+ .argmin = 0,
+ .argmax = -1,
+ .cfunc = reopen_f,
+ .args = "[-r] [-c cache] [-o options]",
+ .oneline = "reopens an image with new options",
+ .help = reopen_help,
+};
+
+static int reopen_f(BlockBackend *blk, int argc, char **argv)
+{
+ BlockDriverState *bs = blk_bs(blk);
+ QemuOpts *qopts;
+ QDict *opts;
+ int c;
+ int flags = bs->open_flags;
+
+ BlockReopenQueue *brq;
+ Error *local_err = NULL;
+
+ while ((c = getopt(argc, argv, "c:o:r")) != -1) {
+ switch (c) {
+ case 'c':
+ if (bdrv_parse_cache_flags(optarg, &flags) < 0) {
+ error_report("Invalid cache option: %s", optarg);
+ return 0;
+ }
+ break;
+ case 'o':
+ if (!qemu_opts_parse_noisily(&reopen_opts, optarg, 0)) {
+ qemu_opts_reset(&reopen_opts);
+ return 0;
+ }
+ break;
+ case 'r':
+ flags &= ~BDRV_O_RDWR;
+ break;
+ default:
+ qemu_opts_reset(&reopen_opts);
+ return qemuio_command_usage(&reopen_cmd);
+ }
+ }
+
+ if (optind != argc) {
+ qemu_opts_reset(&reopen_opts);
+ return qemuio_command_usage(&reopen_cmd);
+ }
+
+ qopts = qemu_opts_find(&reopen_opts, NULL);
+ opts = qopts ? qemu_opts_to_qdict(qopts, NULL) : NULL;
+ qemu_opts_reset(&reopen_opts);
+
+ brq = bdrv_reopen_queue(NULL, bs, opts, flags);
+ bdrv_reopen_multiple(brq, &local_err);
+ if (local_err) {
+ error_report_err(local_err);
+ }
+
+ return 0;
+}
+
static int break_f(BlockBackend *blk, int argc, char **argv)
{
int ret;
@@ -2266,6 +2355,7 @@ static void __attribute((constructor)) init_qemuio_commands(void)
qemuio_add_command(&discard_cmd);
qemuio_add_command(&alloc_cmd);
qemuio_add_command(&map_cmd);
+ qemuio_add_command(&reopen_cmd);
qemuio_add_command(&break_cmd);
qemuio_add_command(&remove_break_cmd);
qemuio_add_command(&resume_cmd);
--
1.8.3.1
^ permalink raw reply related [flat|nested] 34+ messages in thread* [Qemu-devel] [PULL 10/23] qcow2: Improve error message
2015-09-11 19:40 [Qemu-devel] [PULL 00/23] Block layer patches Kevin Wolf
` (8 preceding siblings ...)
2015-09-11 19:40 ` [Qemu-devel] [PULL 09/23] qemu-io: Add command 'reopen' Kevin Wolf
@ 2015-09-11 19:40 ` Kevin Wolf
2015-09-11 19:40 ` [Qemu-devel] [PULL 11/23] qcow2: Factor out qcow2_update_options() Kevin Wolf
` (13 subsequent siblings)
23 siblings, 0 replies; 34+ messages in thread
From: Kevin Wolf @ 2015-09-11 19:40 UTC (permalink / raw)
To: qemu-block; +Cc: kwolf, qemu-devel
Eric says that "any" sounds better than "either", and my non-native
feeling says the same, so let's change it.
Suggested-by: Eric Blake <eblake@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Reviewed-by: Max Reitz <mreitz@redhat.com>
---
block/qcow2.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/block/qcow2.c b/block/qcow2.c
index 9b09e01..7f06d37 100644
--- a/block/qcow2.c
+++ b/block/qcow2.c
@@ -1030,7 +1030,7 @@ static int qcow2_open(BlockDriverState *bs, QDict *options, int flags,
overlap_check_template = QCOW2_OL_ALL;
} else {
error_setg(errp, "Unsupported value '%s' for qcow2 option "
- "'overlap-check'. Allowed are either of the following: "
+ "'overlap-check'. Allowed are any of the following: "
"none, constant, cached, all", opt_overlap_check);
ret = -EINVAL;
goto fail;
--
1.8.3.1
^ permalink raw reply related [flat|nested] 34+ messages in thread* [Qemu-devel] [PULL 11/23] qcow2: Factor out qcow2_update_options()
2015-09-11 19:40 [Qemu-devel] [PULL 00/23] Block layer patches Kevin Wolf
` (9 preceding siblings ...)
2015-09-11 19:40 ` [Qemu-devel] [PULL 10/23] qcow2: Improve error message Kevin Wolf
@ 2015-09-11 19:40 ` Kevin Wolf
2015-09-11 19:40 ` [Qemu-devel] [PULL 12/23] qcow2: Move qcow2_update_options() call up Kevin Wolf
` (12 subsequent siblings)
23 siblings, 0 replies; 34+ messages in thread
From: Kevin Wolf @ 2015-09-11 19:40 UTC (permalink / raw)
To: qemu-block; +Cc: kwolf, qemu-devel
Eventually we want to be able to change options at runtime. As a first
step towards that goal, separate some option handling code from the
general initialisation code in qcow2_open().
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Reviewed-by: Max Reitz <mreitz@redhat.com>
---
block/qcow2.c | 135 +++++++++++++++++++++++++++++++++-------------------------
1 file changed, 76 insertions(+), 59 deletions(-)
diff --git a/block/qcow2.c b/block/qcow2.c
index 7f06d37..4dd0699 100644
--- a/block/qcow2.c
+++ b/block/qcow2.c
@@ -589,6 +589,80 @@ static void read_cache_sizes(BlockDriverState *bs, QemuOpts *opts,
}
}
+static int qcow2_update_options(BlockDriverState *bs, QemuOpts *opts,
+ int flags, Error **errp)
+{
+ BDRVQcow2State *s = bs->opaque;
+ const char *opt_overlap_check, *opt_overlap_check_template;
+ int overlap_check_template = 0;
+ int i;
+ int ret;
+
+ s->use_lazy_refcounts = qemu_opt_get_bool(opts, QCOW2_OPT_LAZY_REFCOUNTS,
+ (s->compatible_features & QCOW2_COMPAT_LAZY_REFCOUNTS));
+
+ s->discard_passthrough[QCOW2_DISCARD_NEVER] = false;
+ s->discard_passthrough[QCOW2_DISCARD_ALWAYS] = true;
+ s->discard_passthrough[QCOW2_DISCARD_REQUEST] =
+ qemu_opt_get_bool(opts, QCOW2_OPT_DISCARD_REQUEST,
+ flags & BDRV_O_UNMAP);
+ s->discard_passthrough[QCOW2_DISCARD_SNAPSHOT] =
+ qemu_opt_get_bool(opts, QCOW2_OPT_DISCARD_SNAPSHOT, true);
+ s->discard_passthrough[QCOW2_DISCARD_OTHER] =
+ qemu_opt_get_bool(opts, QCOW2_OPT_DISCARD_OTHER, false);
+
+ opt_overlap_check = qemu_opt_get(opts, QCOW2_OPT_OVERLAP);
+ opt_overlap_check_template = qemu_opt_get(opts, QCOW2_OPT_OVERLAP_TEMPLATE);
+ if (opt_overlap_check_template && opt_overlap_check &&
+ strcmp(opt_overlap_check_template, opt_overlap_check))
+ {
+ error_setg(errp, "Conflicting values for qcow2 options '"
+ QCOW2_OPT_OVERLAP "' ('%s') and '" QCOW2_OPT_OVERLAP_TEMPLATE
+ "' ('%s')", opt_overlap_check, opt_overlap_check_template);
+ ret = -EINVAL;
+ goto fail;
+ }
+ if (!opt_overlap_check) {
+ opt_overlap_check = opt_overlap_check_template ?: "cached";
+ }
+
+ if (!strcmp(opt_overlap_check, "none")) {
+ overlap_check_template = 0;
+ } else if (!strcmp(opt_overlap_check, "constant")) {
+ overlap_check_template = QCOW2_OL_CONSTANT;
+ } else if (!strcmp(opt_overlap_check, "cached")) {
+ overlap_check_template = QCOW2_OL_CACHED;
+ } else if (!strcmp(opt_overlap_check, "all")) {
+ overlap_check_template = QCOW2_OL_ALL;
+ } else {
+ error_setg(errp, "Unsupported value '%s' for qcow2 option "
+ "'overlap-check'. Allowed are any of the following: "
+ "none, constant, cached, all", opt_overlap_check);
+ ret = -EINVAL;
+ goto fail;
+ }
+
+ s->overlap_check = 0;
+ for (i = 0; i < QCOW2_OL_MAX_BITNR; i++) {
+ /* overlap-check defines a template bitmask, but every flag may be
+ * overwritten through the associated boolean option */
+ s->overlap_check |=
+ qemu_opt_get_bool(opts, overlap_bool_option_names[i],
+ overlap_check_template & (1 << i)) << i;
+ }
+
+ if (s->use_lazy_refcounts && s->qcow_version < 3) {
+ error_setg(errp, "Lazy refcounts require a qcow2 image with at least "
+ "qemu 1.1 compatibility level");
+ ret = -EINVAL;
+ goto fail;
+ }
+
+ ret = 0;
+fail:
+ return ret;
+}
+
static int qcow2_open(BlockDriverState *bs, QDict *options, int flags,
Error **errp)
{
@@ -600,8 +674,6 @@ static int qcow2_open(BlockDriverState *bs, QDict *options, int flags,
Error *local_err = NULL;
uint64_t ext_end;
uint64_t l1_vm_state_index;
- const char *opt_overlap_check, *opt_overlap_check_template;
- int overlap_check_template = 0;
uint64_t l2_cache_size, refcount_cache_size;
uint64_t cache_clean_interval;
@@ -992,69 +1064,14 @@ static int qcow2_open(BlockDriverState *bs, QDict *options, int flags,
}
/* Enable lazy_refcounts according to image and command line options */
- s->use_lazy_refcounts = qemu_opt_get_bool(opts, QCOW2_OPT_LAZY_REFCOUNTS,
- (s->compatible_features & QCOW2_COMPAT_LAZY_REFCOUNTS));
-
- s->discard_passthrough[QCOW2_DISCARD_NEVER] = false;
- s->discard_passthrough[QCOW2_DISCARD_ALWAYS] = true;
- s->discard_passthrough[QCOW2_DISCARD_REQUEST] =
- qemu_opt_get_bool(opts, QCOW2_OPT_DISCARD_REQUEST,
- flags & BDRV_O_UNMAP);
- s->discard_passthrough[QCOW2_DISCARD_SNAPSHOT] =
- qemu_opt_get_bool(opts, QCOW2_OPT_DISCARD_SNAPSHOT, true);
- s->discard_passthrough[QCOW2_DISCARD_OTHER] =
- qemu_opt_get_bool(opts, QCOW2_OPT_DISCARD_OTHER, false);
-
- opt_overlap_check = qemu_opt_get(opts, QCOW2_OPT_OVERLAP);
- opt_overlap_check_template = qemu_opt_get(opts, QCOW2_OPT_OVERLAP_TEMPLATE);
- if (opt_overlap_check_template && opt_overlap_check &&
- strcmp(opt_overlap_check_template, opt_overlap_check))
- {
- error_setg(errp, "Conflicting values for qcow2 options '"
- QCOW2_OPT_OVERLAP "' ('%s') and '" QCOW2_OPT_OVERLAP_TEMPLATE
- "' ('%s')", opt_overlap_check, opt_overlap_check_template);
- ret = -EINVAL;
- goto fail;
- }
- if (!opt_overlap_check) {
- opt_overlap_check = opt_overlap_check_template ?: "cached";
- }
-
- if (!strcmp(opt_overlap_check, "none")) {
- overlap_check_template = 0;
- } else if (!strcmp(opt_overlap_check, "constant")) {
- overlap_check_template = QCOW2_OL_CONSTANT;
- } else if (!strcmp(opt_overlap_check, "cached")) {
- overlap_check_template = QCOW2_OL_CACHED;
- } else if (!strcmp(opt_overlap_check, "all")) {
- overlap_check_template = QCOW2_OL_ALL;
- } else {
- error_setg(errp, "Unsupported value '%s' for qcow2 option "
- "'overlap-check'. Allowed are any of the following: "
- "none, constant, cached, all", opt_overlap_check);
- ret = -EINVAL;
+ ret = qcow2_update_options(bs, opts, flags, errp);
+ if (ret < 0) {
goto fail;
}
- s->overlap_check = 0;
- for (i = 0; i < QCOW2_OL_MAX_BITNR; i++) {
- /* overlap-check defines a template bitmask, but every flag may be
- * overwritten through the associated boolean option */
- s->overlap_check |=
- qemu_opt_get_bool(opts, overlap_bool_option_names[i],
- overlap_check_template & (1 << i)) << i;
- }
-
qemu_opts_del(opts);
opts = NULL;
- if (s->use_lazy_refcounts && s->qcow_version < 3) {
- error_setg(errp, "Lazy refcounts require a qcow2 image with at least "
- "qemu 1.1 compatibility level");
- ret = -EINVAL;
- goto fail;
- }
-
#ifdef DEBUG_ALLOC
{
BdrvCheckResult result = {0};
--
1.8.3.1
^ permalink raw reply related [flat|nested] 34+ messages in thread* [Qemu-devel] [PULL 12/23] qcow2: Move qcow2_update_options() call up
2015-09-11 19:40 [Qemu-devel] [PULL 00/23] Block layer patches Kevin Wolf
` (10 preceding siblings ...)
2015-09-11 19:40 ` [Qemu-devel] [PULL 11/23] qcow2: Factor out qcow2_update_options() Kevin Wolf
@ 2015-09-11 19:40 ` Kevin Wolf
2015-09-11 19:40 ` [Qemu-devel] [PULL 13/23] qcow2: Move rest of option handling to qcow2_update_options() Kevin Wolf
` (11 subsequent siblings)
23 siblings, 0 replies; 34+ messages in thread
From: Kevin Wolf @ 2015-09-11 19:40 UTC (permalink / raw)
To: qemu-block; +Cc: kwolf, qemu-devel
qcow2_update_options() only updates some variables in BDRVQcowState and
doesn't really depend on other parts of it being initialised yet, so it
can be moved so that it immediately follows the other half of option
handling code in qcow2_open().
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Reviewed-by: Max Reitz <mreitz@redhat.com>
---
block/qcow2.c | 18 +++++++++---------
1 file changed, 9 insertions(+), 9 deletions(-)
diff --git a/block/qcow2.c b/block/qcow2.c
index 4dd0699..be6b3c2 100644
--- a/block/qcow2.c
+++ b/block/qcow2.c
@@ -979,6 +979,15 @@ static int qcow2_open(BlockDriverState *bs, QDict *options, int flags,
s->cache_clean_interval = cache_clean_interval;
cache_clean_timer_init(bs, bdrv_get_aio_context(bs));
+ /* Enable lazy_refcounts according to image and command line options */
+ ret = qcow2_update_options(bs, opts, flags, errp);
+ if (ret < 0) {
+ goto fail;
+ }
+
+ qemu_opts_del(opts);
+ opts = NULL;
+
s->cluster_cache = g_malloc(s->cluster_size);
/* one more sector for decompressed data alignment */
s->cluster_data = qemu_try_blockalign(bs->file, QCOW_MAX_CRYPT_CLUSTERS
@@ -1063,15 +1072,6 @@ static int qcow2_open(BlockDriverState *bs, QDict *options, int flags,
}
}
- /* Enable lazy_refcounts according to image and command line options */
- ret = qcow2_update_options(bs, opts, flags, errp);
- if (ret < 0) {
- goto fail;
- }
-
- qemu_opts_del(opts);
- opts = NULL;
-
#ifdef DEBUG_ALLOC
{
BdrvCheckResult result = {0};
--
1.8.3.1
^ permalink raw reply related [flat|nested] 34+ messages in thread* [Qemu-devel] [PULL 13/23] qcow2: Move rest of option handling to qcow2_update_options()
2015-09-11 19:40 [Qemu-devel] [PULL 00/23] Block layer patches Kevin Wolf
` (11 preceding siblings ...)
2015-09-11 19:40 ` [Qemu-devel] [PULL 12/23] qcow2: Move qcow2_update_options() call up Kevin Wolf
@ 2015-09-11 19:40 ` Kevin Wolf
2015-09-11 19:40 ` [Qemu-devel] [PULL 14/23] qcow2: Leave s unchanged on qcow2_update_options() failure Kevin Wolf
` (10 subsequent siblings)
23 siblings, 0 replies; 34+ messages in thread
From: Kevin Wolf @ 2015-09-11 19:40 UTC (permalink / raw)
To: qemu-block; +Cc: kwolf, qemu-devel
With this commit, the handling of driver-specific options in
qcow2_open() is completely separated out into qcow2_update_options().
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Reviewed-by: Max Reitz <mreitz@redhat.com>
---
block/qcow2.c | 134 +++++++++++++++++++++++++++++-----------------------------
1 file changed, 68 insertions(+), 66 deletions(-)
diff --git a/block/qcow2.c b/block/qcow2.c
index be6b3c2..cf6992e 100644
--- a/block/qcow2.c
+++ b/block/qcow2.c
@@ -589,15 +589,77 @@ static void read_cache_sizes(BlockDriverState *bs, QemuOpts *opts,
}
}
-static int qcow2_update_options(BlockDriverState *bs, QemuOpts *opts,
+static int qcow2_update_options(BlockDriverState *bs, QDict *options,
int flags, Error **errp)
{
BDRVQcow2State *s = bs->opaque;
+ QemuOpts *opts = NULL;
const char *opt_overlap_check, *opt_overlap_check_template;
int overlap_check_template = 0;
+ uint64_t l2_cache_size, refcount_cache_size;
+ uint64_t cache_clean_interval;
int i;
+ Error *local_err = NULL;
int ret;
+ opts = qemu_opts_create(&qcow2_runtime_opts, NULL, 0, &error_abort);
+ qemu_opts_absorb_qdict(opts, options, &local_err);
+ if (local_err) {
+ error_propagate(errp, local_err);
+ ret = -EINVAL;
+ goto fail;
+ }
+
+ /* get L2 table/refcount block cache size from command line options */
+ read_cache_sizes(bs, opts, &l2_cache_size, &refcount_cache_size,
+ &local_err);
+ if (local_err) {
+ error_propagate(errp, local_err);
+ ret = -EINVAL;
+ goto fail;
+ }
+
+ l2_cache_size /= s->cluster_size;
+ if (l2_cache_size < MIN_L2_CACHE_SIZE) {
+ l2_cache_size = MIN_L2_CACHE_SIZE;
+ }
+ if (l2_cache_size > INT_MAX) {
+ error_setg(errp, "L2 cache size too big");
+ ret = -EINVAL;
+ goto fail;
+ }
+
+ refcount_cache_size /= s->cluster_size;
+ if (refcount_cache_size < MIN_REFCOUNT_CACHE_SIZE) {
+ refcount_cache_size = MIN_REFCOUNT_CACHE_SIZE;
+ }
+ if (refcount_cache_size > INT_MAX) {
+ error_setg(errp, "Refcount cache size too big");
+ ret = -EINVAL;
+ goto fail;
+ }
+
+ /* alloc L2 table/refcount block cache */
+ s->l2_table_cache = qcow2_cache_create(bs, l2_cache_size);
+ s->refcount_block_cache = qcow2_cache_create(bs, refcount_cache_size);
+ if (s->l2_table_cache == NULL || s->refcount_block_cache == NULL) {
+ error_setg(errp, "Could not allocate metadata caches");
+ ret = -ENOMEM;
+ goto fail;
+ }
+
+ /* New interval for cache cleanup timer */
+ cache_clean_interval =
+ qemu_opt_get_number(opts, QCOW2_OPT_CACHE_CLEAN_INTERVAL, 0);
+ if (cache_clean_interval > UINT_MAX) {
+ error_setg(errp, "Cache clean interval too big");
+ ret = -EINVAL;
+ goto fail;
+ }
+ s->cache_clean_interval = cache_clean_interval;
+ cache_clean_timer_init(bs, bdrv_get_aio_context(bs));
+
+ /* Enable lazy_refcounts according to image and command line options */
s->use_lazy_refcounts = qemu_opt_get_bool(opts, QCOW2_OPT_LAZY_REFCOUNTS,
(s->compatible_features & QCOW2_COMPAT_LAZY_REFCOUNTS));
@@ -660,6 +722,9 @@ static int qcow2_update_options(BlockDriverState *bs, QemuOpts *opts,
ret = 0;
fail:
+ qemu_opts_del(opts);
+ opts = NULL;
+
return ret;
}
@@ -670,12 +735,9 @@ static int qcow2_open(BlockDriverState *bs, QDict *options, int flags,
unsigned int len, i;
int ret = 0;
QCowHeader header;
- QemuOpts *opts = NULL;
Error *local_err = NULL;
uint64_t ext_end;
uint64_t l1_vm_state_index;
- uint64_t l2_cache_size, refcount_cache_size;
- uint64_t cache_clean_interval;
ret = bdrv_pread(bs->file, 0, &header, sizeof(header));
if (ret < 0) {
@@ -923,71 +985,12 @@ static int qcow2_open(BlockDriverState *bs, QDict *options, int flags,
}
}
- /* get L2 table/refcount block cache size from command line options */
- opts = qemu_opts_create(&qcow2_runtime_opts, NULL, 0, &error_abort);
- qemu_opts_absorb_qdict(opts, options, &local_err);
- if (local_err) {
- error_propagate(errp, local_err);
- ret = -EINVAL;
- goto fail;
- }
-
- read_cache_sizes(bs, opts, &l2_cache_size, &refcount_cache_size,
- &local_err);
- if (local_err) {
- error_propagate(errp, local_err);
- ret = -EINVAL;
- goto fail;
- }
-
- l2_cache_size /= s->cluster_size;
- if (l2_cache_size < MIN_L2_CACHE_SIZE) {
- l2_cache_size = MIN_L2_CACHE_SIZE;
- }
- if (l2_cache_size > INT_MAX) {
- error_setg(errp, "L2 cache size too big");
- ret = -EINVAL;
- goto fail;
- }
-
- refcount_cache_size /= s->cluster_size;
- if (refcount_cache_size < MIN_REFCOUNT_CACHE_SIZE) {
- refcount_cache_size = MIN_REFCOUNT_CACHE_SIZE;
- }
- if (refcount_cache_size > INT_MAX) {
- error_setg(errp, "Refcount cache size too big");
- ret = -EINVAL;
- goto fail;
- }
-
- /* alloc L2 table/refcount block cache */
- s->l2_table_cache = qcow2_cache_create(bs, l2_cache_size);
- s->refcount_block_cache = qcow2_cache_create(bs, refcount_cache_size);
- if (s->l2_table_cache == NULL || s->refcount_block_cache == NULL) {
- error_setg(errp, "Could not allocate metadata caches");
- ret = -ENOMEM;
- goto fail;
- }
-
- cache_clean_interval =
- qemu_opt_get_number(opts, QCOW2_OPT_CACHE_CLEAN_INTERVAL, 0);
- if (cache_clean_interval > UINT_MAX) {
- error_setg(errp, "Cache clean interval too big");
- ret = -EINVAL;
- goto fail;
- }
- s->cache_clean_interval = cache_clean_interval;
- cache_clean_timer_init(bs, bdrv_get_aio_context(bs));
-
- /* Enable lazy_refcounts according to image and command line options */
- ret = qcow2_update_options(bs, opts, flags, errp);
+ /* Parse driver-specific options */
+ ret = qcow2_update_options(bs, options, flags, errp);
if (ret < 0) {
goto fail;
}
- qemu_opts_del(opts);
- opts = NULL;
-
s->cluster_cache = g_malloc(s->cluster_size);
/* one more sector for decompressed data alignment */
s->cluster_data = qemu_try_blockalign(bs->file, QCOW_MAX_CRYPT_CLUSTERS
@@ -1081,7 +1084,6 @@ static int qcow2_open(BlockDriverState *bs, QDict *options, int flags,
return ret;
fail:
- qemu_opts_del(opts);
g_free(s->unknown_header_fields);
cleanup_unknown_header_ext(bs);
qcow2_free_snapshots(bs);
--
1.8.3.1
^ permalink raw reply related [flat|nested] 34+ messages in thread* [Qemu-devel] [PULL 14/23] qcow2: Leave s unchanged on qcow2_update_options() failure
2015-09-11 19:40 [Qemu-devel] [PULL 00/23] Block layer patches Kevin Wolf
` (12 preceding siblings ...)
2015-09-11 19:40 ` [Qemu-devel] [PULL 13/23] qcow2: Move rest of option handling to qcow2_update_options() Kevin Wolf
@ 2015-09-11 19:40 ` Kevin Wolf
2015-09-11 19:40 ` [Qemu-devel] [PULL 15/23] qcow2: Fix memory leak in qcow2_update_options() error path Kevin Wolf
` (9 subsequent siblings)
23 siblings, 0 replies; 34+ messages in thread
From: Kevin Wolf @ 2015-09-11 19:40 UTC (permalink / raw)
To: qemu-block; +Cc: kwolf, qemu-devel
On return, either all new options should be applied to BDRVQcowState (on
success), or all of the old settings should be preserved (on failure).
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Reviewed-by: Max Reitz <mreitz@redhat.com>
---
block/qcow2.c | 57 +++++++++++++++++++++++++++++++++++----------------------
1 file changed, 35 insertions(+), 22 deletions(-)
diff --git a/block/qcow2.c b/block/qcow2.c
index cf6992e..c61d996 100644
--- a/block/qcow2.c
+++ b/block/qcow2.c
@@ -597,7 +597,10 @@ static int qcow2_update_options(BlockDriverState *bs, QDict *options,
const char *opt_overlap_check, *opt_overlap_check_template;
int overlap_check_template = 0;
uint64_t l2_cache_size, refcount_cache_size;
+ Qcow2Cache *l2_table_cache;
+ Qcow2Cache *refcount_block_cache;
uint64_t cache_clean_interval;
+ bool use_lazy_refcounts;
int i;
Error *local_err = NULL;
int ret;
@@ -640,9 +643,9 @@ static int qcow2_update_options(BlockDriverState *bs, QDict *options,
}
/* alloc L2 table/refcount block cache */
- s->l2_table_cache = qcow2_cache_create(bs, l2_cache_size);
- s->refcount_block_cache = qcow2_cache_create(bs, refcount_cache_size);
- if (s->l2_table_cache == NULL || s->refcount_block_cache == NULL) {
+ l2_table_cache = qcow2_cache_create(bs, l2_cache_size);
+ refcount_block_cache = qcow2_cache_create(bs, refcount_cache_size);
+ if (l2_table_cache == NULL || refcount_block_cache == NULL) {
error_setg(errp, "Could not allocate metadata caches");
ret = -ENOMEM;
goto fail;
@@ -656,23 +659,18 @@ static int qcow2_update_options(BlockDriverState *bs, QDict *options,
ret = -EINVAL;
goto fail;
}
- s->cache_clean_interval = cache_clean_interval;
- cache_clean_timer_init(bs, bdrv_get_aio_context(bs));
/* Enable lazy_refcounts according to image and command line options */
- s->use_lazy_refcounts = qemu_opt_get_bool(opts, QCOW2_OPT_LAZY_REFCOUNTS,
+ use_lazy_refcounts = qemu_opt_get_bool(opts, QCOW2_OPT_LAZY_REFCOUNTS,
(s->compatible_features & QCOW2_COMPAT_LAZY_REFCOUNTS));
+ if (use_lazy_refcounts && s->qcow_version < 3) {
+ error_setg(errp, "Lazy refcounts require a qcow2 image with at least "
+ "qemu 1.1 compatibility level");
+ ret = -EINVAL;
+ goto fail;
+ }
- s->discard_passthrough[QCOW2_DISCARD_NEVER] = false;
- s->discard_passthrough[QCOW2_DISCARD_ALWAYS] = true;
- s->discard_passthrough[QCOW2_DISCARD_REQUEST] =
- qemu_opt_get_bool(opts, QCOW2_OPT_DISCARD_REQUEST,
- flags & BDRV_O_UNMAP);
- s->discard_passthrough[QCOW2_DISCARD_SNAPSHOT] =
- qemu_opt_get_bool(opts, QCOW2_OPT_DISCARD_SNAPSHOT, true);
- s->discard_passthrough[QCOW2_DISCARD_OTHER] =
- qemu_opt_get_bool(opts, QCOW2_OPT_DISCARD_OTHER, false);
-
+ /* Overlap check options */
opt_overlap_check = qemu_opt_get(opts, QCOW2_OPT_OVERLAP);
opt_overlap_check_template = qemu_opt_get(opts, QCOW2_OPT_OVERLAP_TEMPLATE);
if (opt_overlap_check_template && opt_overlap_check &&
@@ -704,6 +702,10 @@ static int qcow2_update_options(BlockDriverState *bs, QDict *options,
goto fail;
}
+ /*
+ * Start updating fields in BDRVQcow2State.
+ * After this point no failure is allowed any more.
+ */
s->overlap_check = 0;
for (i = 0; i < QCOW2_OL_MAX_BITNR; i++) {
/* overlap-check defines a template bitmask, but every flag may be
@@ -713,12 +715,23 @@ static int qcow2_update_options(BlockDriverState *bs, QDict *options,
overlap_check_template & (1 << i)) << i;
}
- if (s->use_lazy_refcounts && s->qcow_version < 3) {
- error_setg(errp, "Lazy refcounts require a qcow2 image with at least "
- "qemu 1.1 compatibility level");
- ret = -EINVAL;
- goto fail;
- }
+ s->l2_table_cache = l2_table_cache;
+ s->refcount_block_cache = refcount_block_cache;
+
+ s->use_lazy_refcounts = use_lazy_refcounts;
+
+ s->discard_passthrough[QCOW2_DISCARD_NEVER] = false;
+ s->discard_passthrough[QCOW2_DISCARD_ALWAYS] = true;
+ s->discard_passthrough[QCOW2_DISCARD_REQUEST] =
+ qemu_opt_get_bool(opts, QCOW2_OPT_DISCARD_REQUEST,
+ flags & BDRV_O_UNMAP);
+ s->discard_passthrough[QCOW2_DISCARD_SNAPSHOT] =
+ qemu_opt_get_bool(opts, QCOW2_OPT_DISCARD_SNAPSHOT, true);
+ s->discard_passthrough[QCOW2_DISCARD_OTHER] =
+ qemu_opt_get_bool(opts, QCOW2_OPT_DISCARD_OTHER, false);
+
+ s->cache_clean_interval = cache_clean_interval;
+ cache_clean_timer_init(bs, bdrv_get_aio_context(bs));
ret = 0;
fail:
--
1.8.3.1
^ permalink raw reply related [flat|nested] 34+ messages in thread* [Qemu-devel] [PULL 15/23] qcow2: Fix memory leak in qcow2_update_options() error path
2015-09-11 19:40 [Qemu-devel] [PULL 00/23] Block layer patches Kevin Wolf
` (13 preceding siblings ...)
2015-09-11 19:40 ` [Qemu-devel] [PULL 14/23] qcow2: Leave s unchanged on qcow2_update_options() failure Kevin Wolf
@ 2015-09-11 19:40 ` Kevin Wolf
2015-09-11 19:40 ` [Qemu-devel] [PULL 16/23] qcow2: Make qcow2_update_options() suitable for transactions Kevin Wolf
` (8 subsequent siblings)
23 siblings, 0 replies; 34+ messages in thread
From: Kevin Wolf @ 2015-09-11 19:40 UTC (permalink / raw)
To: qemu-block; +Cc: kwolf, qemu-devel
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Reviewed-by: Max Reitz <mreitz@redhat.com>
---
block/qcow2.c | 12 ++++++++++--
1 file changed, 10 insertions(+), 2 deletions(-)
diff --git a/block/qcow2.c b/block/qcow2.c
index c61d996..374a56d 100644
--- a/block/qcow2.c
+++ b/block/qcow2.c
@@ -597,8 +597,8 @@ static int qcow2_update_options(BlockDriverState *bs, QDict *options,
const char *opt_overlap_check, *opt_overlap_check_template;
int overlap_check_template = 0;
uint64_t l2_cache_size, refcount_cache_size;
- Qcow2Cache *l2_table_cache;
- Qcow2Cache *refcount_block_cache;
+ Qcow2Cache *l2_table_cache = NULL;
+ Qcow2Cache *refcount_block_cache = NULL;
uint64_t cache_clean_interval;
bool use_lazy_refcounts;
int i;
@@ -735,6 +735,14 @@ static int qcow2_update_options(BlockDriverState *bs, QDict *options,
ret = 0;
fail:
+ if (ret < 0) {
+ if (l2_table_cache) {
+ qcow2_cache_destroy(bs, l2_table_cache);
+ }
+ if (refcount_block_cache) {
+ qcow2_cache_destroy(bs, refcount_block_cache);
+ }
+ }
qemu_opts_del(opts);
opts = NULL;
--
1.8.3.1
^ permalink raw reply related [flat|nested] 34+ messages in thread* [Qemu-devel] [PULL 16/23] qcow2: Make qcow2_update_options() suitable for transactions
2015-09-11 19:40 [Qemu-devel] [PULL 00/23] Block layer patches Kevin Wolf
` (14 preceding siblings ...)
2015-09-11 19:40 ` [Qemu-devel] [PULL 15/23] qcow2: Fix memory leak in qcow2_update_options() error path Kevin Wolf
@ 2015-09-11 19:40 ` Kevin Wolf
2015-09-11 19:40 ` [Qemu-devel] [PULL 17/23] qcow2: Support updating driver-specific options in reopen Kevin Wolf
` (7 subsequent siblings)
23 siblings, 0 replies; 34+ messages in thread
From: Kevin Wolf @ 2015-09-11 19:40 UTC (permalink / raw)
To: qemu-block; +Cc: kwolf, qemu-devel
Before we can allow updating options at runtime with bdrv_reopen(), we
need to split the function into prepare/commit/abort parts.
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Reviewed-by: Max Reitz <mreitz@redhat.com>
---
block/qcow2.c | 113 +++++++++++++++++++++++++++++++++++++---------------------
1 file changed, 73 insertions(+), 40 deletions(-)
diff --git a/block/qcow2.c b/block/qcow2.c
index 374a56d..64ba3cb 100644
--- a/block/qcow2.c
+++ b/block/qcow2.c
@@ -589,18 +589,25 @@ static void read_cache_sizes(BlockDriverState *bs, QemuOpts *opts,
}
}
-static int qcow2_update_options(BlockDriverState *bs, QDict *options,
- int flags, Error **errp)
+typedef struct Qcow2ReopenState {
+ Qcow2Cache *l2_table_cache;
+ Qcow2Cache *refcount_block_cache;
+ bool use_lazy_refcounts;
+ int overlap_check;
+ bool discard_passthrough[QCOW2_DISCARD_MAX];
+ uint64_t cache_clean_interval;
+} Qcow2ReopenState;
+
+static int qcow2_update_options_prepare(BlockDriverState *bs,
+ Qcow2ReopenState *r,
+ QDict *options, int flags,
+ Error **errp)
{
BDRVQcow2State *s = bs->opaque;
QemuOpts *opts = NULL;
const char *opt_overlap_check, *opt_overlap_check_template;
int overlap_check_template = 0;
uint64_t l2_cache_size, refcount_cache_size;
- Qcow2Cache *l2_table_cache = NULL;
- Qcow2Cache *refcount_block_cache = NULL;
- uint64_t cache_clean_interval;
- bool use_lazy_refcounts;
int i;
Error *local_err = NULL;
int ret;
@@ -643,27 +650,27 @@ static int qcow2_update_options(BlockDriverState *bs, QDict *options,
}
/* alloc L2 table/refcount block cache */
- l2_table_cache = qcow2_cache_create(bs, l2_cache_size);
- refcount_block_cache = qcow2_cache_create(bs, refcount_cache_size);
- if (l2_table_cache == NULL || refcount_block_cache == NULL) {
+ r->l2_table_cache = qcow2_cache_create(bs, l2_cache_size);
+ r->refcount_block_cache = qcow2_cache_create(bs, refcount_cache_size);
+ if (r->l2_table_cache == NULL || r->refcount_block_cache == NULL) {
error_setg(errp, "Could not allocate metadata caches");
ret = -ENOMEM;
goto fail;
}
/* New interval for cache cleanup timer */
- cache_clean_interval =
+ r->cache_clean_interval =
qemu_opt_get_number(opts, QCOW2_OPT_CACHE_CLEAN_INTERVAL, 0);
- if (cache_clean_interval > UINT_MAX) {
+ if (r->cache_clean_interval > UINT_MAX) {
error_setg(errp, "Cache clean interval too big");
ret = -EINVAL;
goto fail;
}
/* Enable lazy_refcounts according to image and command line options */
- use_lazy_refcounts = qemu_opt_get_bool(opts, QCOW2_OPT_LAZY_REFCOUNTS,
+ r->use_lazy_refcounts = qemu_opt_get_bool(opts, QCOW2_OPT_LAZY_REFCOUNTS,
(s->compatible_features & QCOW2_COMPAT_LAZY_REFCOUNTS));
- if (use_lazy_refcounts && s->qcow_version < 3) {
+ if (r->use_lazy_refcounts && s->qcow_version < 3) {
error_setg(errp, "Lazy refcounts require a qcow2 image with at least "
"qemu 1.1 compatibility level");
ret = -EINVAL;
@@ -702,49 +709,75 @@ static int qcow2_update_options(BlockDriverState *bs, QDict *options,
goto fail;
}
- /*
- * Start updating fields in BDRVQcow2State.
- * After this point no failure is allowed any more.
- */
- s->overlap_check = 0;
+ r->overlap_check = 0;
for (i = 0; i < QCOW2_OL_MAX_BITNR; i++) {
/* overlap-check defines a template bitmask, but every flag may be
* overwritten through the associated boolean option */
- s->overlap_check |=
+ r->overlap_check |=
qemu_opt_get_bool(opts, overlap_bool_option_names[i],
overlap_check_template & (1 << i)) << i;
}
- s->l2_table_cache = l2_table_cache;
- s->refcount_block_cache = refcount_block_cache;
-
- s->use_lazy_refcounts = use_lazy_refcounts;
-
- s->discard_passthrough[QCOW2_DISCARD_NEVER] = false;
- s->discard_passthrough[QCOW2_DISCARD_ALWAYS] = true;
- s->discard_passthrough[QCOW2_DISCARD_REQUEST] =
+ r->discard_passthrough[QCOW2_DISCARD_NEVER] = false;
+ r->discard_passthrough[QCOW2_DISCARD_ALWAYS] = true;
+ r->discard_passthrough[QCOW2_DISCARD_REQUEST] =
qemu_opt_get_bool(opts, QCOW2_OPT_DISCARD_REQUEST,
flags & BDRV_O_UNMAP);
- s->discard_passthrough[QCOW2_DISCARD_SNAPSHOT] =
+ r->discard_passthrough[QCOW2_DISCARD_SNAPSHOT] =
qemu_opt_get_bool(opts, QCOW2_OPT_DISCARD_SNAPSHOT, true);
- s->discard_passthrough[QCOW2_DISCARD_OTHER] =
+ r->discard_passthrough[QCOW2_DISCARD_OTHER] =
qemu_opt_get_bool(opts, QCOW2_OPT_DISCARD_OTHER, false);
- s->cache_clean_interval = cache_clean_interval;
- cache_clean_timer_init(bs, bdrv_get_aio_context(bs));
-
ret = 0;
fail:
- if (ret < 0) {
- if (l2_table_cache) {
- qcow2_cache_destroy(bs, l2_table_cache);
- }
- if (refcount_block_cache) {
- qcow2_cache_destroy(bs, refcount_block_cache);
- }
- }
qemu_opts_del(opts);
opts = NULL;
+ return ret;
+}
+
+static void qcow2_update_options_commit(BlockDriverState *bs,
+ Qcow2ReopenState *r)
+{
+ BDRVQcow2State *s = bs->opaque;
+ int i;
+
+ s->l2_table_cache = r->l2_table_cache;
+ s->refcount_block_cache = r->refcount_block_cache;
+
+ s->overlap_check = r->overlap_check;
+ s->use_lazy_refcounts = r->use_lazy_refcounts;
+
+ for (i = 0; i < QCOW2_DISCARD_MAX; i++) {
+ s->discard_passthrough[i] = r->discard_passthrough[i];
+ }
+
+ s->cache_clean_interval = r->cache_clean_interval;
+ cache_clean_timer_init(bs, bdrv_get_aio_context(bs));
+}
+
+static void qcow2_update_options_abort(BlockDriverState *bs,
+ Qcow2ReopenState *r)
+{
+ if (r->l2_table_cache) {
+ qcow2_cache_destroy(bs, r->l2_table_cache);
+ }
+ if (r->refcount_block_cache) {
+ qcow2_cache_destroy(bs, r->refcount_block_cache);
+ }
+}
+
+static int qcow2_update_options(BlockDriverState *bs, QDict *options,
+ int flags, Error **errp)
+{
+ Qcow2ReopenState r = {};
+ int ret;
+
+ ret = qcow2_update_options_prepare(bs, &r, options, flags, errp);
+ if (ret >= 0) {
+ qcow2_update_options_commit(bs, &r);
+ } else {
+ qcow2_update_options_abort(bs, &r);
+ }
return ret;
}
--
1.8.3.1
^ permalink raw reply related [flat|nested] 34+ messages in thread* [Qemu-devel] [PULL 17/23] qcow2: Support updating driver-specific options in reopen
2015-09-11 19:40 [Qemu-devel] [PULL 00/23] Block layer patches Kevin Wolf
` (15 preceding siblings ...)
2015-09-11 19:40 ` [Qemu-devel] [PULL 16/23] qcow2: Make qcow2_update_options() suitable for transactions Kevin Wolf
@ 2015-09-11 19:40 ` Kevin Wolf
2015-09-11 19:40 ` [Qemu-devel] [PULL 18/23] qemu-iotests: Reopen qcow2 with lazy-refcounts change Kevin Wolf
` (6 subsequent siblings)
23 siblings, 0 replies; 34+ messages in thread
From: Kevin Wolf @ 2015-09-11 19:40 UTC (permalink / raw)
To: qemu-block; +Cc: kwolf, qemu-devel
For updating the cache sizes, disabling lazy refcounts and updating the
clean_cache_timer there is a bit more to do than just changing the
variables, but otherwise we're all set for changing options during
bdrv_reopen().
Just implement the missing pieces and hook the functions up in
bdrv_reopen().
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Reviewed-by: Max Reitz <mreitz@redhat.com>
---
block/qcow2.c | 81 ++++++++++++++++++++++++++++++++++++++++++++++++++++-------
1 file changed, 72 insertions(+), 9 deletions(-)
diff --git a/block/qcow2.c b/block/qcow2.c
index 64ba3cb..56ad808 100644
--- a/block/qcow2.c
+++ b/block/qcow2.c
@@ -649,7 +649,24 @@ static int qcow2_update_options_prepare(BlockDriverState *bs,
goto fail;
}
- /* alloc L2 table/refcount block cache */
+ /* alloc new L2 table/refcount block cache, flush old one */
+ if (s->l2_table_cache) {
+ ret = qcow2_cache_flush(bs, s->l2_table_cache);
+ if (ret) {
+ error_setg_errno(errp, -ret, "Failed to flush the L2 table cache");
+ goto fail;
+ }
+ }
+
+ if (s->refcount_block_cache) {
+ ret = qcow2_cache_flush(bs, s->refcount_block_cache);
+ if (ret) {
+ error_setg_errno(errp, -ret,
+ "Failed to flush the refcount block cache");
+ goto fail;
+ }
+ }
+
r->l2_table_cache = qcow2_cache_create(bs, l2_cache_size);
r->refcount_block_cache = qcow2_cache_create(bs, refcount_cache_size);
if (r->l2_table_cache == NULL || r->refcount_block_cache == NULL) {
@@ -660,14 +677,15 @@ static int qcow2_update_options_prepare(BlockDriverState *bs,
/* New interval for cache cleanup timer */
r->cache_clean_interval =
- qemu_opt_get_number(opts, QCOW2_OPT_CACHE_CLEAN_INTERVAL, 0);
+ qemu_opt_get_number(opts, QCOW2_OPT_CACHE_CLEAN_INTERVAL,
+ s->cache_clean_interval);
if (r->cache_clean_interval > UINT_MAX) {
error_setg(errp, "Cache clean interval too big");
ret = -EINVAL;
goto fail;
}
- /* Enable lazy_refcounts according to image and command line options */
+ /* lazy-refcounts; flush if going from enabled to disabled */
r->use_lazy_refcounts = qemu_opt_get_bool(opts, QCOW2_OPT_LAZY_REFCOUNTS,
(s->compatible_features & QCOW2_COMPAT_LAZY_REFCOUNTS));
if (r->use_lazy_refcounts && s->qcow_version < 3) {
@@ -677,6 +695,14 @@ static int qcow2_update_options_prepare(BlockDriverState *bs,
goto fail;
}
+ if (s->use_lazy_refcounts && !r->use_lazy_refcounts) {
+ ret = qcow2_mark_clean(bs);
+ if (ret < 0) {
+ error_setg_errno(errp, -ret, "Failed to disable lazy refcounts");
+ goto fail;
+ }
+ }
+
/* Overlap check options */
opt_overlap_check = qemu_opt_get(opts, QCOW2_OPT_OVERLAP);
opt_overlap_check_template = qemu_opt_get(opts, QCOW2_OPT_OVERLAP_TEMPLATE);
@@ -741,6 +767,12 @@ static void qcow2_update_options_commit(BlockDriverState *bs,
BDRVQcow2State *s = bs->opaque;
int i;
+ if (s->l2_table_cache) {
+ qcow2_cache_destroy(bs, s->l2_table_cache);
+ }
+ if (s->refcount_block_cache) {
+ qcow2_cache_destroy(bs, s->refcount_block_cache);
+ }
s->l2_table_cache = r->l2_table_cache;
s->refcount_block_cache = r->refcount_block_cache;
@@ -751,8 +783,11 @@ static void qcow2_update_options_commit(BlockDriverState *bs,
s->discard_passthrough[i] = r->discard_passthrough[i];
}
- s->cache_clean_interval = r->cache_clean_interval;
- cache_clean_timer_init(bs, bdrv_get_aio_context(bs));
+ if (s->cache_clean_interval != r->cache_clean_interval) {
+ cache_clean_timer_del(bs);
+ s->cache_clean_interval = r->cache_clean_interval;
+ cache_clean_timer_init(bs, bdrv_get_aio_context(bs));
+ }
}
static void qcow2_update_options_abort(BlockDriverState *bs,
@@ -1199,26 +1234,52 @@ static int qcow2_set_key(BlockDriverState *bs, const char *key)
return 0;
}
-/* We have no actual commit/abort logic for qcow2, but we need to write out any
- * unwritten data if we reopen read-only. */
static int qcow2_reopen_prepare(BDRVReopenState *state,
BlockReopenQueue *queue, Error **errp)
{
+ Qcow2ReopenState *r;
int ret;
+ r = g_new0(Qcow2ReopenState, 1);
+ state->opaque = r;
+
+ ret = qcow2_update_options_prepare(state->bs, r, state->options,
+ state->flags, errp);
+ if (ret < 0) {
+ goto fail;
+ }
+
+ /* We need to write out any unwritten data if we reopen read-only. */
if ((state->flags & BDRV_O_RDWR) == 0) {
ret = bdrv_flush(state->bs);
if (ret < 0) {
- return ret;
+ goto fail;
}
ret = qcow2_mark_clean(state->bs);
if (ret < 0) {
- return ret;
+ goto fail;
}
}
return 0;
+
+fail:
+ qcow2_update_options_abort(state->bs, r);
+ g_free(r);
+ return ret;
+}
+
+static void qcow2_reopen_commit(BDRVReopenState *state)
+{
+ qcow2_update_options_commit(state->bs, state->opaque);
+ g_free(state->opaque);
+}
+
+static void qcow2_reopen_abort(BDRVReopenState *state)
+{
+ qcow2_update_options_abort(state->bs, state->opaque);
+ g_free(state->opaque);
}
static int64_t coroutine_fn qcow2_co_get_block_status(BlockDriverState *bs,
@@ -3082,6 +3143,8 @@ BlockDriver bdrv_qcow2 = {
.bdrv_open = qcow2_open,
.bdrv_close = qcow2_close,
.bdrv_reopen_prepare = qcow2_reopen_prepare,
+ .bdrv_reopen_commit = qcow2_reopen_commit,
+ .bdrv_reopen_abort = qcow2_reopen_abort,
.bdrv_create = qcow2_create,
.bdrv_has_zero_init = bdrv_has_zero_init_1,
.bdrv_co_get_block_status = qcow2_co_get_block_status,
--
1.8.3.1
^ permalink raw reply related [flat|nested] 34+ messages in thread* [Qemu-devel] [PULL 18/23] qemu-iotests: Reopen qcow2 with lazy-refcounts change
2015-09-11 19:40 [Qemu-devel] [PULL 00/23] Block layer patches Kevin Wolf
` (16 preceding siblings ...)
2015-09-11 19:40 ` [Qemu-devel] [PULL 17/23] qcow2: Support updating driver-specific options in reopen Kevin Wolf
@ 2015-09-11 19:40 ` Kevin Wolf
2015-09-11 19:40 ` [Qemu-devel] [PULL 19/23] qemu-iotests: More qcow2 reopen tests Kevin Wolf
` (5 subsequent siblings)
23 siblings, 0 replies; 34+ messages in thread
From: Kevin Wolf @ 2015-09-11 19:40 UTC (permalink / raw)
To: qemu-block; +Cc: kwolf, qemu-devel
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Reviewed-by: Max Reitz <mreitz@redhat.com>
---
tests/qemu-iotests/039 | 27 +++++++++++++++++++++++++++
tests/qemu-iotests/039.out | 18 ++++++++++++++++++
2 files changed, 45 insertions(+)
diff --git a/tests/qemu-iotests/039 b/tests/qemu-iotests/039
index 617f397..9e9b379 100755
--- a/tests/qemu-iotests/039
+++ b/tests/qemu-iotests/039
@@ -147,6 +147,33 @@ $PYTHON qcow2.py "$TEST_IMG".base dump-header | grep incompatible_features
_check_test_img
TEST_IMG="$TEST_IMG".base _check_test_img
+echo
+echo "== Changing lazy_refcounts setting at runtime =="
+
+IMGOPTS="compat=1.1,lazy_refcounts=off"
+_make_test_img $size
+
+$QEMU_IO -c "reopen -o lazy-refcounts=on" \
+ -c "write -P 0x5a 0 512" \
+ -c "sigraise $(kill -l KILL)" "$TEST_IMG" 2>&1 \
+ | _filter_qemu_io
+
+# The dirty bit must be set
+$PYTHON qcow2.py "$TEST_IMG" dump-header | grep incompatible_features
+_check_test_img
+
+IMGOPTS="compat=1.1,lazy_refcounts=on"
+_make_test_img $size
+
+$QEMU_IO -c "reopen -o lazy-refcounts=off" \
+ -c "write -P 0x5a 0 512" \
+ -c "sigraise $(kill -l KILL)" "$TEST_IMG" 2>&1 \
+ | _filter_qemu_io
+
+# The dirty bit must not be set
+$PYTHON qcow2.py "$TEST_IMG" dump-header | grep incompatible_features
+_check_test_img
+
# success, all done
echo "*** done"
diff --git a/tests/qemu-iotests/039.out b/tests/qemu-iotests/039.out
index d8c5a44..03a31c5 100644
--- a/tests/qemu-iotests/039.out
+++ b/tests/qemu-iotests/039.out
@@ -74,4 +74,22 @@ incompatible_features 0x0
incompatible_features 0x0
No errors were found on the image.
No errors were found on the image.
+
+== Changing lazy_refcounts setting at runtime ==
+Formatting 'TEST_DIR/t.IMGFMT', fmt=IMGFMT size=134217728
+wrote 512/512 bytes at offset 0
+512 bytes, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
+./common.config: Killed ( exec "$QEMU_IO_PROG" $QEMU_IO_OPTIONS "$@" )
+incompatible_features 0x1
+ERROR cluster 5 refcount=0 reference=1
+ERROR OFLAG_COPIED data cluster: l2_entry=8000000000050000 refcount=0
+
+2 errors were found on the image.
+Data may be corrupted, or further writes to the image may corrupt it.
+Formatting 'TEST_DIR/t.IMGFMT', fmt=IMGFMT size=134217728
+wrote 512/512 bytes at offset 0
+512 bytes, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
+./common.config: Killed ( exec "$QEMU_IO_PROG" $QEMU_IO_OPTIONS "$@" )
+incompatible_features 0x0
+No errors were found on the image.
*** done
--
1.8.3.1
^ permalink raw reply related [flat|nested] 34+ messages in thread* [Qemu-devel] [PULL 19/23] qemu-iotests: More qcow2 reopen tests
2015-09-11 19:40 [Qemu-devel] [PULL 00/23] Block layer patches Kevin Wolf
` (17 preceding siblings ...)
2015-09-11 19:40 ` [Qemu-devel] [PULL 18/23] qemu-iotests: Reopen qcow2 with lazy-refcounts change Kevin Wolf
@ 2015-09-11 19:40 ` Kevin Wolf
2015-09-11 19:41 ` [Qemu-devel] [PULL 20/23] qcow2: Make size_to_clusters() return uint64_t Kevin Wolf
` (4 subsequent siblings)
23 siblings, 0 replies; 34+ messages in thread
From: Kevin Wolf @ 2015-09-11 19:40 UTC (permalink / raw)
To: qemu-block; +Cc: kwolf, qemu-devel
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Reviewed-by: Max Reitz <mreitz@redhat.com>
---
tests/qemu-iotests/137 | 145 +++++++++++++++++++++++++++++++++++++++++++++
tests/qemu-iotests/137.out | 42 +++++++++++++
tests/qemu-iotests/group | 1 +
3 files changed, 188 insertions(+)
create mode 100755 tests/qemu-iotests/137
create mode 100644 tests/qemu-iotests/137.out
diff --git a/tests/qemu-iotests/137 b/tests/qemu-iotests/137
new file mode 100755
index 0000000..9a6597c
--- /dev/null
+++ b/tests/qemu-iotests/137
@@ -0,0 +1,145 @@
+#!/bin/bash
+#
+# Test qcow2 reopen
+#
+# Copyright (C) 2015 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
+}
+trap "_cleanup; exit \$status" 0 1 2 3 15
+
+# get standard environment, filters and checks
+. ./common.rc
+. ./common.filter
+. ./common.qemu
+
+_supported_fmt qcow2
+_supported_proto generic
+_supported_os Linux
+
+
+_make_test_img 64M
+
+echo === Try setting valid values for all options ===
+echo
+
+# Try all options and then check that all of the basic I/O operations still
+# work on this image.
+$QEMU_IO \
+ -c "reopen -o lazy-refcounts=on,pass-discard-request=on" \
+ -c "reopen -o lazy-refcounts=off,pass-discard-request=off" \
+ -c "reopen -o pass-discard-snapshot=on,pass-discard-other=on" \
+ -c "reopen -o pass-discard-snapshot=off,pass-discard-other=off" \
+ -c "reopen -o overlap-check=all" \
+ -c "reopen -o overlap-check=none" \
+ -c "reopen -o overlap-check=cached" \
+ -c "reopen -o overlap-check=constant" \
+ -c "reopen -o overlap-check.template=all" \
+ -c "reopen -o overlap-check.template=none" \
+ -c "reopen -o overlap-check.template=cached" \
+ -c "reopen -o overlap-check.template=constant" \
+ -c "reopen -o overlap-check.main-header=on" \
+ -c "reopen -o overlap-check.main-header=off" \
+ -c "reopen -o overlap-check.active-l1=on" \
+ -c "reopen -o overlap-check.active-l1=off" \
+ -c "reopen -o overlap-check.active-l2=on" \
+ -c "reopen -o overlap-check.active-l2=off" \
+ -c "reopen -o overlap-check.refcount-table=on" \
+ -c "reopen -o overlap-check.refcount-table=off" \
+ -c "reopen -o overlap-check.refcount-block=on" \
+ -c "reopen -o overlap-check.refcount-block=off" \
+ -c "reopen -o overlap-check.snapshot-table=on" \
+ -c "reopen -o overlap-check.snapshot-table=off" \
+ -c "reopen -o overlap-check.inactive-l1=on" \
+ -c "reopen -o overlap-check.inactive-l1=off" \
+ -c "reopen -o overlap-check.inactive-l2=on" \
+ -c "reopen -o overlap-check.inactive-l2=off" \
+ -c "reopen -o cache-size=1M" \
+ -c "reopen -o l2-cache-size=512k" \
+ -c "reopen -o refcount-cache-size=128k" \
+ -c "reopen -o cache-clean-interval=5" \
+ -c "reopen -o cache-clean-interval=0" \
+ -c "reopen -o cache-clean-interval=10" \
+ \
+ -c "write -P 55 0 32M" \
+ -c "read -P 55 0 32M" \
+ -c "discard 0 32M" \
+ -c "write -z 0 32M" \
+ -c "read -P 0 0 32M" \
+ \
+ "$TEST_IMG" | _filter_qemu_io
+
+
+echo
+echo === Try setting some invalid values ===
+echo
+
+$QEMU_IO \
+ -c "reopen -o lazy-refcounts=42" \
+ -c "reopen -o cache-size=1M,l2-cache-size=64k,refcount-cache-size=64k" \
+ -c "reopen -o cache-size=1M,l2-cache-size=2M" \
+ -c "reopen -o cache-size=1M,refcount-cache-size=2M" \
+ -c "reopen -o l2-cache-size=256T" \
+ -c "reopen -o refcount-cache-size=256T" \
+ -c "reopen -o overlap-check=constant,overlap-check.template=all" \
+ -c "reopen -o overlap-check=blubb" \
+ -c "reopen -o overlap-check.template=blubb" \
+ -c "reopen -o cache-clean-interval=-1" \
+ "$TEST_IMG" | _filter_qemu_io
+
+echo
+echo === Test transaction semantics ===
+echo
+
+# Whether lazy-refcounts was actually enabled can easily be tested: Check if
+# the dirty bit is set after a crash
+$QEMU_IO \
+ -c "reopen -o lazy-refcounts=on,overlap-check=blubb" \
+ -c "write -P 0x5a 0 512" \
+ -c "sigraise $(kill -l KILL)" \
+ "$TEST_IMG" 2>&1 | _filter_qemu_io
+
+# The dirty bit must not be set
+$PYTHON qcow2.py "$TEST_IMG" dump-header | grep incompatible_features
+
+# Similarly we can test whether corruption detection has been enabled:
+# Create L1/L2, overwrite first entry in refcount block, allocate something.
+# Disabling the checks should fail, so the corruption must be detected.
+_make_test_img 64M
+$QEMU_IO -c "write 0 64k" "$TEST_IMG" | _filter_qemu_io
+poke_file "$TEST_IMG" "$((0x20000))" "\x00\x00"
+$QEMU_IO \
+ -c "reopen -o overlap-check=none,lazy-refcounts=42" \
+ -c "write 64k 64k" \
+ "$TEST_IMG" 2>&1 | _filter_qemu_io
+
+# success, all done
+echo '*** done'
+rm -f $seq.full
+status=0
diff --git a/tests/qemu-iotests/137.out b/tests/qemu-iotests/137.out
new file mode 100644
index 0000000..cf55a41
--- /dev/null
+++ b/tests/qemu-iotests/137.out
@@ -0,0 +1,42 @@
+QA output created by 137
+Formatting 'TEST_DIR/t.IMGFMT', fmt=IMGFMT size=67108864
+=== Try setting valid values for all options ===
+
+wrote 33554432/33554432 bytes at offset 0
+32 MiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
+read 33554432/33554432 bytes at offset 0
+32 MiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
+discard 33554432/33554432 bytes at offset 0
+32 MiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
+wrote 33554432/33554432 bytes at offset 0
+32 MiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
+read 33554432/33554432 bytes at offset 0
+32 MiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
+
+=== Try setting some invalid values ===
+
+Parameter 'lazy-refcounts' expects 'on' or 'off'
+cache-size, l2-cache-size and refcount-cache-size may not be set the same time
+l2-cache-size may not exceed cache-size
+refcount-cache-size may not exceed cache-size
+L2 cache size too big
+L2 cache size too big
+Conflicting values for qcow2 options 'overlap-check' ('constant') and 'overlap-check.template' ('all')
+Unsupported value 'blubb' for qcow2 option 'overlap-check'. Allowed are any of the following: none, constant, cached, all
+Unsupported value 'blubb' for qcow2 option 'overlap-check'. Allowed are any of the following: none, constant, cached, all
+Cache clean interval too big
+
+=== Test transaction semantics ===
+
+Unsupported value 'blubb' for qcow2 option 'overlap-check'. Allowed are any of the following: none, constant, cached, all
+wrote 512/512 bytes at offset 0
+512 bytes, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
+./common.config: Killed ( exec "$QEMU_IO_PROG" $QEMU_IO_OPTIONS "$@" )
+incompatible_features 0x0
+Formatting 'TEST_DIR/t.IMGFMT', fmt=IMGFMT size=67108864
+wrote 65536/65536 bytes at offset 0
+64 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
+Parameter 'lazy-refcounts' expects 'on' or 'off'
+qcow2: Marking image as corrupt: Preventing invalid write on metadata (overlaps with qcow2_header); further corruption events will be suppressed
+write failed: Input/output error
+*** done
diff --git a/tests/qemu-iotests/group b/tests/qemu-iotests/group
index c430b6c..3a6a8f0 100644
--- a/tests/qemu-iotests/group
+++ b/tests/qemu-iotests/group
@@ -134,3 +134,4 @@
132 rw auto quick
134 rw auto quick
135 rw auto
+137 rw auto
--
1.8.3.1
^ permalink raw reply related [flat|nested] 34+ messages in thread* [Qemu-devel] [PULL 20/23] qcow2: Make size_to_clusters() return uint64_t
2015-09-11 19:40 [Qemu-devel] [PULL 00/23] Block layer patches Kevin Wolf
` (18 preceding siblings ...)
2015-09-11 19:40 ` [Qemu-devel] [PULL 19/23] qemu-iotests: More qcow2 reopen tests Kevin Wolf
@ 2015-09-11 19:41 ` Kevin Wolf
2015-09-11 19:41 ` [Qemu-devel] [PULL 21/23] iotests: Add test for checking large image files Kevin Wolf
` (3 subsequent siblings)
23 siblings, 0 replies; 34+ messages in thread
From: Kevin Wolf @ 2015-09-11 19:41 UTC (permalink / raw)
To: qemu-block; +Cc: kwolf, qemu-devel
From: Max Reitz <mreitz@redhat.com>
Sadly, some images may have more clusters than what can be represented
using a plain int. We should be prepared for that case (in
qcow2_check_refcounts() we actually were trying to catch that case, but
since size_to_clusters() truncated the returned value, that check never
did anything useful).
Cc: qemu-stable <qemu-stable@nongnu.org>
Signed-off-by: Max Reitz <mreitz@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
---
block/qcow2-cluster.c | 28 ++++++++++++++++++----------
block/qcow2-refcount.c | 10 +++++++---
block/qcow2.h | 6 +++---
3 files changed, 28 insertions(+), 16 deletions(-)
diff --git a/block/qcow2-cluster.c b/block/qcow2-cluster.c
index 412ee27..6ede629 100644
--- a/block/qcow2-cluster.c
+++ b/block/qcow2-cluster.c
@@ -298,7 +298,7 @@ fail:
* as contiguous. (This allows it, for example, to stop at the first compressed
* cluster which may require a different handling)
*/
-static int count_contiguous_clusters(uint64_t nb_clusters, int cluster_size,
+static int count_contiguous_clusters(int nb_clusters, int cluster_size,
uint64_t *l2_table, uint64_t stop_flags)
{
int i;
@@ -321,7 +321,7 @@ static int count_contiguous_clusters(uint64_t nb_clusters, int cluster_size,
return i;
}
-static int count_contiguous_free_clusters(uint64_t nb_clusters, uint64_t *l2_table)
+static int count_contiguous_free_clusters(int nb_clusters, uint64_t *l2_table)
{
int i;
@@ -495,6 +495,7 @@ int qcow2_get_cluster_offset(BlockDriverState *bs, uint64_t offset,
if (nb_needed > nb_available) {
nb_needed = nb_available;
}
+ assert(nb_needed <= INT_MAX);
*cluster_offset = 0;
@@ -530,6 +531,8 @@ int qcow2_get_cluster_offset(BlockDriverState *bs, uint64_t offset,
l2_index = (offset >> s->cluster_bits) & (s->l2_size - 1);
*cluster_offset = be64_to_cpu(l2_table[l2_index]);
+
+ /* nb_needed <= INT_MAX, thus nb_clusters <= INT_MAX, too */
nb_clusters = size_to_clusters(s, nb_needed << 9);
ret = qcow2_get_cluster_type(*cluster_offset);
@@ -960,7 +963,7 @@ static int handle_copied(BlockDriverState *bs, uint64_t guest_offset,
int l2_index;
uint64_t cluster_offset;
uint64_t *l2_table;
- unsigned int nb_clusters;
+ uint64_t nb_clusters;
unsigned int keep_clusters;
int ret;
@@ -979,6 +982,7 @@ static int handle_copied(BlockDriverState *bs, uint64_t guest_offset,
l2_index = offset_to_l2_index(s, guest_offset);
nb_clusters = MIN(nb_clusters, s->l2_size - l2_index);
+ assert(nb_clusters <= INT_MAX);
/* Find L2 entry for the first involved cluster */
ret = get_cluster_table(bs, guest_offset, &l2_table, &l2_index);
@@ -1061,7 +1065,7 @@ out:
* restarted, but the whole request should not be failed.
*/
static int do_alloc_cluster_offset(BlockDriverState *bs, uint64_t guest_offset,
- uint64_t *host_offset, unsigned int *nb_clusters)
+ uint64_t *host_offset, uint64_t *nb_clusters)
{
BDRVQcow2State *s = bs->opaque;
@@ -1079,7 +1083,7 @@ static int do_alloc_cluster_offset(BlockDriverState *bs, uint64_t guest_offset,
*host_offset = cluster_offset;
return 0;
} else {
- int ret = qcow2_alloc_clusters_at(bs, *host_offset, *nb_clusters);
+ int64_t ret = qcow2_alloc_clusters_at(bs, *host_offset, *nb_clusters);
if (ret < 0) {
return ret;
}
@@ -1115,7 +1119,7 @@ static int handle_alloc(BlockDriverState *bs, uint64_t guest_offset,
int l2_index;
uint64_t *l2_table;
uint64_t entry;
- unsigned int nb_clusters;
+ uint64_t nb_clusters;
int ret;
uint64_t alloc_cluster_offset;
@@ -1133,6 +1137,7 @@ static int handle_alloc(BlockDriverState *bs, uint64_t guest_offset,
l2_index = offset_to_l2_index(s, guest_offset);
nb_clusters = MIN(nb_clusters, s->l2_size - l2_index);
+ assert(nb_clusters <= INT_MAX);
/* Find L2 entry for the first involved cluster */
ret = get_cluster_table(bs, guest_offset, &l2_table, &l2_index);
@@ -1426,7 +1431,8 @@ int qcow2_decompress_cluster(BlockDriverState *bs, uint64_t cluster_offset)
* clusters.
*/
static int discard_single_l2(BlockDriverState *bs, uint64_t offset,
- unsigned int nb_clusters, enum qcow2_discard_type type, bool full_discard)
+ uint64_t nb_clusters, enum qcow2_discard_type type,
+ bool full_discard)
{
BDRVQcow2State *s = bs->opaque;
uint64_t *l2_table;
@@ -1441,6 +1447,7 @@ static int discard_single_l2(BlockDriverState *bs, uint64_t offset,
/* Limit nb_clusters to one L2 table */
nb_clusters = MIN(nb_clusters, s->l2_size - l2_index);
+ assert(nb_clusters <= INT_MAX);
for (i = 0; i < nb_clusters; i++) {
uint64_t old_l2_entry;
@@ -1503,7 +1510,7 @@ int qcow2_discard_clusters(BlockDriverState *bs, uint64_t offset,
{
BDRVQcow2State *s = bs->opaque;
uint64_t end_offset;
- unsigned int nb_clusters;
+ uint64_t nb_clusters;
int ret;
end_offset = offset + (nb_sectors << BDRV_SECTOR_BITS);
@@ -1545,7 +1552,7 @@ fail:
* clusters.
*/
static int zero_single_l2(BlockDriverState *bs, uint64_t offset,
- unsigned int nb_clusters)
+ uint64_t nb_clusters)
{
BDRVQcow2State *s = bs->opaque;
uint64_t *l2_table;
@@ -1560,6 +1567,7 @@ static int zero_single_l2(BlockDriverState *bs, uint64_t offset,
/* Limit nb_clusters to one L2 table */
nb_clusters = MIN(nb_clusters, s->l2_size - l2_index);
+ assert(nb_clusters <= INT_MAX);
for (i = 0; i < nb_clusters; i++) {
uint64_t old_offset;
@@ -1584,7 +1592,7 @@ static int zero_single_l2(BlockDriverState *bs, uint64_t offset,
int qcow2_zero_clusters(BlockDriverState *bs, uint64_t offset, int nb_sectors)
{
BDRVQcow2State *s = bs->opaque;
- unsigned int nb_clusters;
+ uint64_t nb_clusters;
int ret;
/* The zero flag is only supported by version 3 and newer */
diff --git a/block/qcow2-refcount.c b/block/qcow2-refcount.c
index b780bb9..5f67798 100644
--- a/block/qcow2-refcount.c
+++ b/block/qcow2-refcount.c
@@ -875,8 +875,8 @@ int64_t qcow2_alloc_clusters(BlockDriverState *bs, uint64_t size)
return offset;
}
-int qcow2_alloc_clusters_at(BlockDriverState *bs, uint64_t offset,
- int nb_clusters)
+int64_t qcow2_alloc_clusters_at(BlockDriverState *bs, uint64_t offset,
+ int64_t nb_clusters)
{
BDRVQcow2State *s = bs->opaque;
uint64_t cluster_index, refcount;
@@ -1259,7 +1259,7 @@ static size_t refcount_array_byte_size(BDRVQcow2State *s, uint64_t entries)
static int realloc_refcount_array(BDRVQcow2State *s, void **array,
int64_t *size, int64_t new_size)
{
- size_t old_byte_size, new_byte_size;
+ int64_t old_byte_size, new_byte_size;
void *new_ptr;
/* Round to clusters so the array can be directly written to disk */
@@ -1275,6 +1275,10 @@ static int realloc_refcount_array(BDRVQcow2State *s, void **array,
assert(new_byte_size > 0);
+ if (new_byte_size > SIZE_MAX) {
+ return -ENOMEM;
+ }
+
new_ptr = g_try_realloc(*array, new_byte_size);
if (!new_ptr) {
return -ENOMEM;
diff --git a/block/qcow2.h b/block/qcow2.h
index 61f1b57..d700bf1 100644
--- a/block/qcow2.h
+++ b/block/qcow2.h
@@ -415,7 +415,7 @@ static inline int64_t offset_into_cluster(BDRVQcow2State *s, int64_t offset)
return offset & (s->cluster_size - 1);
}
-static inline int size_to_clusters(BDRVQcow2State *s, int64_t size)
+static inline uint64_t size_to_clusters(BDRVQcow2State *s, uint64_t size)
{
return (size + (s->cluster_size - 1)) >> s->cluster_bits;
}
@@ -509,8 +509,8 @@ int qcow2_update_cluster_refcount(BlockDriverState *bs, int64_t cluster_index,
enum qcow2_discard_type type);
int64_t qcow2_alloc_clusters(BlockDriverState *bs, uint64_t size);
-int qcow2_alloc_clusters_at(BlockDriverState *bs, uint64_t offset,
- int nb_clusters);
+int64_t qcow2_alloc_clusters_at(BlockDriverState *bs, uint64_t offset,
+ int64_t nb_clusters);
int64_t qcow2_alloc_bytes(BlockDriverState *bs, int size);
void qcow2_free_clusters(BlockDriverState *bs,
int64_t offset, int64_t size,
--
1.8.3.1
^ permalink raw reply related [flat|nested] 34+ messages in thread* [Qemu-devel] [PULL 21/23] iotests: Add test for checking large image files
2015-09-11 19:40 [Qemu-devel] [PULL 00/23] Block layer patches Kevin Wolf
` (19 preceding siblings ...)
2015-09-11 19:41 ` [Qemu-devel] [PULL 20/23] qcow2: Make size_to_clusters() return uint64_t Kevin Wolf
@ 2015-09-11 19:41 ` Kevin Wolf
2015-09-11 19:41 ` [Qemu-devel] [PULL 22/23] vmdk: Fix next_cluster_sector for compressed write Kevin Wolf
` (2 subsequent siblings)
23 siblings, 0 replies; 34+ messages in thread
From: Kevin Wolf @ 2015-09-11 19:41 UTC (permalink / raw)
To: qemu-block; +Cc: kwolf, qemu-devel
From: Max Reitz <mreitz@redhat.com>
Add a test for checking a qcow2 file with a multiple of 2^32 clusters.
Signed-off-by: Max Reitz <mreitz@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
---
tests/qemu-iotests/138 | 73 ++++++++++++++++++++++++++++++++++++++++++++++
tests/qemu-iotests/138.out | 9 ++++++
tests/qemu-iotests/group | 1 +
3 files changed, 83 insertions(+)
create mode 100755 tests/qemu-iotests/138
create mode 100644 tests/qemu-iotests/138.out
diff --git a/tests/qemu-iotests/138 b/tests/qemu-iotests/138
new file mode 100755
index 0000000..a5c3464
--- /dev/null
+++ b/tests/qemu-iotests/138
@@ -0,0 +1,73 @@
+#!/bin/bash
+#
+# General test case for qcow2's image check
+#
+# Copyright (C) 2015 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=mreitz@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
+}
+trap "_cleanup; exit \$status" 0 1 2 3 15
+
+# get standard environment, filters and checks
+. ./common.rc
+. ./common.filter
+
+# This tests qocw2-specific low-level functionality
+_supported_fmt qcow2
+_supported_proto file
+_supported_os Linux
+
+echo
+echo '=== Check on an image with a multiple of 2^32 clusters ==='
+echo
+
+IMGOPTS=$(_optstr_add "$IMGOPTS" "cluster_size=512") \
+ _make_test_img 512
+
+# Allocate L2 table
+$QEMU_IO -c 'write 0 512' "$TEST_IMG" | _filter_qemu_io
+
+# Put the data cluster at a multiple of 2 TB, resulting in the image apparently
+# having a multiple of 2^32 clusters
+# (To be more specific: It is at 32 PB)
+poke_file "$TEST_IMG" 2048 "\x80\x80\x00\x00\x00\x00\x00\x00"
+
+# An offset of 32 PB results in qemu-img check having to allocate an in-memory
+# refcount table of 128 TB (16 bit refcounts, 512 byte clusters).
+# This should be generally too much for any system and thus fail.
+# What this test is checking is that the qcow2 driver actually tries to allocate
+# such a large amount of memory (and is consequently aborting) instead of having
+# truncated the cluster count somewhere (which would result in much less memory
+# being allocated and then a segfault occurring).
+_check_test_img
+
+# success, all done
+echo "*** done"
+rm -f $seq.full
+status=0
diff --git a/tests/qemu-iotests/138.out b/tests/qemu-iotests/138.out
new file mode 100644
index 0000000..3fe911f
--- /dev/null
+++ b/tests/qemu-iotests/138.out
@@ -0,0 +1,9 @@
+QA output created by 138
+
+=== Check on an image with a multiple of 2^32 clusters ===
+
+Formatting 'TEST_DIR/t.IMGFMT', fmt=IMGFMT size=512
+wrote 512/512 bytes at offset 0
+512 bytes, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
+qemu-img: Check failed: Cannot allocate memory
+*** done
diff --git a/tests/qemu-iotests/group b/tests/qemu-iotests/group
index 3a6a8f0..439b1d2 100644
--- a/tests/qemu-iotests/group
+++ b/tests/qemu-iotests/group
@@ -135,3 +135,4 @@
134 rw auto quick
135 rw auto
137 rw auto
+138 rw auto quick
--
1.8.3.1
^ permalink raw reply related [flat|nested] 34+ messages in thread* [Qemu-devel] [PULL 22/23] vmdk: Fix next_cluster_sector for compressed write
2015-09-11 19:40 [Qemu-devel] [PULL 00/23] Block layer patches Kevin Wolf
` (20 preceding siblings ...)
2015-09-11 19:41 ` [Qemu-devel] [PULL 21/23] iotests: Add test for checking large image files Kevin Wolf
@ 2015-09-11 19:41 ` Kevin Wolf
2015-09-11 19:41 ` [Qemu-devel] [PULL 23/23] qcow2: Make qcow2_alloc_bytes() more explicit Kevin Wolf
2015-09-14 9:46 ` [Qemu-devel] [PULL 00/23] Block layer patches Peter Maydell
23 siblings, 0 replies; 34+ messages in thread
From: Kevin Wolf @ 2015-09-11 19:41 UTC (permalink / raw)
To: qemu-block; +Cc: kwolf, qemu-devel
From: Radoslav Gerganov <rgerganov@vmware.com>
When the VMDK is streamOptimized (or compressed), the
next_cluster_sector must not be incremented by a fixed number of
sectors. Instead of this, it must be rounded up to the next consecutive
sector. Fixing this results in much smaller compressed images.
Signed-off-by: Radoslav Gerganov <rgerganov@vmware.com>
Reviewed-by: Fam Zheng <famz@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
---
block/vmdk.c | 8 ++++++--
1 file changed, 6 insertions(+), 2 deletions(-)
diff --git a/block/vmdk.c b/block/vmdk.c
index 7bdc3d0..be0d640 100644
--- a/block/vmdk.c
+++ b/block/vmdk.c
@@ -1324,8 +1324,12 @@ static int vmdk_write_extent(VmdkExtent *extent, int64_t cluster_offset,
write_end_sector = DIV_ROUND_UP(write_offset + write_len, BDRV_SECTOR_SIZE);
- extent->next_cluster_sector = MAX(extent->next_cluster_sector,
- write_end_sector);
+ if (extent->compressed) {
+ extent->next_cluster_sector = write_end_sector;
+ } else {
+ extent->next_cluster_sector = MAX(extent->next_cluster_sector,
+ write_end_sector);
+ }
if (ret != write_len) {
ret = ret < 0 ? ret : -EIO;
--
1.8.3.1
^ permalink raw reply related [flat|nested] 34+ messages in thread* [Qemu-devel] [PULL 23/23] qcow2: Make qcow2_alloc_bytes() more explicit
2015-09-11 19:40 [Qemu-devel] [PULL 00/23] Block layer patches Kevin Wolf
` (21 preceding siblings ...)
2015-09-11 19:41 ` [Qemu-devel] [PULL 22/23] vmdk: Fix next_cluster_sector for compressed write Kevin Wolf
@ 2015-09-11 19:41 ` Kevin Wolf
2015-09-14 9:46 ` [Qemu-devel] [PULL 00/23] Block layer patches Peter Maydell
23 siblings, 0 replies; 34+ messages in thread
From: Kevin Wolf @ 2015-09-11 19:41 UTC (permalink / raw)
To: qemu-block; +Cc: kwolf, qemu-devel
From: Max Reitz <mreitz@redhat.com>
In case of -EAGAIN returned by update_refcount(), we should discard the
cluster offset we were trying to allocate and request a new one, because
in theory that old offset might now be taken by a refcount block.
In practice, this was not the case due to update_refcount() generally
returning strictly monotonic increasing cluster offsets. However, this
behavior is not set in stone, and it is also not obvious when looking at
qcow2_alloc_bytes() alone, so we should not rely on it.
Reported-by: Kevin Wolf <kwolf@redhat.com>
Signed-off-by: Max Reitz <mreitz@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
---
block/qcow2-refcount.c | 6 ++++++
1 file changed, 6 insertions(+)
diff --git a/block/qcow2-refcount.c b/block/qcow2-refcount.c
index 5f67798..3579c4d 100644
--- a/block/qcow2-refcount.c
+++ b/block/qcow2-refcount.c
@@ -949,11 +949,17 @@ int64_t qcow2_alloc_bytes(BlockDriverState *bs, int size)
if (!offset || ROUND_UP(offset, s->cluster_size) != new_cluster) {
offset = new_cluster;
+ free_in_cluster = s->cluster_size;
+ } else {
+ free_in_cluster += s->cluster_size;
}
}
assert(offset);
ret = update_refcount(bs, offset, size, 1, false, QCOW2_DISCARD_NEVER);
+ if (ret < 0) {
+ offset = 0;
+ }
} while (ret == -EAGAIN);
if (ret < 0) {
return ret;
--
1.8.3.1
^ permalink raw reply related [flat|nested] 34+ messages in thread* Re: [Qemu-devel] [PULL 00/23] Block layer patches
2015-09-11 19:40 [Qemu-devel] [PULL 00/23] Block layer patches Kevin Wolf
` (22 preceding siblings ...)
2015-09-11 19:41 ` [Qemu-devel] [PULL 23/23] qcow2: Make qcow2_alloc_bytes() more explicit Kevin Wolf
@ 2015-09-14 9:46 ` Peter Maydell
2015-09-14 9:57 ` Kevin Wolf
23 siblings, 1 reply; 34+ messages in thread
From: Peter Maydell @ 2015-09-14 9:46 UTC (permalink / raw)
To: Kevin Wolf; +Cc: QEMU Developers, Qemu-block
On 11 September 2015 at 20:40, Kevin Wolf <kwolf@redhat.com> wrote:
> The following changes since commit 30c38c90bd3f1bb105ebc069ac1821067c980b7c:
>
> scripts/qemu-gdb: Add brief comment describing usage (2015-09-11 17:14:50 +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 1fcbcc93872953d08cd35830d1169fed19196290:
>
> qcow2: Make qcow2_alloc_bytes() more explicit (2015-09-11 20:03:02 +0200)
>
> ----------------------------------------------------------------
> Block layer patches
>
> ----------------------------------------------------------------
Hi. I'm afraid this fails to build on 32-bit:
/home/pm215/qemu/block/qcow2-refcount.c: In function ‘realloc_refcount_array’:
/home/pm215/qemu/block/qcow2-refcount.c:1294:16: error: cast to
pointer from integer of different size [-Werror=int-to-pointer-cast]
memset((void *)((uintptr_t)new_ptr + old_byte_size), 0,
^
cc1: all warnings being treated as errors
/home/pm215/qemu/rules.mak:57: recipe for target 'block/qcow2-refcount.o' failed
make: *** [block/qcow2-refcount.o] Error 1
(old_byte_size is int64_t, so (uintptr_t)new_ptr + old_byte_size
becomes a 64-bit addition, and then you cast it to a 32-bit
pointer.)
thanks
-- PMM
^ permalink raw reply [flat|nested] 34+ messages in thread* Re: [Qemu-devel] [PULL 00/23] Block layer patches
2015-09-14 9:46 ` [Qemu-devel] [PULL 00/23] Block layer patches Peter Maydell
@ 2015-09-14 9:57 ` Kevin Wolf
2015-09-14 14:36 ` Max Reitz
0 siblings, 1 reply; 34+ messages in thread
From: Kevin Wolf @ 2015-09-14 9:57 UTC (permalink / raw)
To: Peter Maydell; +Cc: QEMU Developers, Qemu-block, mreitz
Am 14.09.2015 um 11:46 hat Peter Maydell geschrieben:
> On 11 September 2015 at 20:40, Kevin Wolf <kwolf@redhat.com> wrote:
> > The following changes since commit 30c38c90bd3f1bb105ebc069ac1821067c980b7c:
> >
> > scripts/qemu-gdb: Add brief comment describing usage (2015-09-11 17:14:50 +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 1fcbcc93872953d08cd35830d1169fed19196290:
> >
> > qcow2: Make qcow2_alloc_bytes() more explicit (2015-09-11 20:03:02 +0200)
> >
> > ----------------------------------------------------------------
> > Block layer patches
> >
> > ----------------------------------------------------------------
>
> Hi. I'm afraid this fails to build on 32-bit:
>
> /home/pm215/qemu/block/qcow2-refcount.c: In function ‘realloc_refcount_array’:
> /home/pm215/qemu/block/qcow2-refcount.c:1294:16: error: cast to
> pointer from integer of different size [-Werror=int-to-pointer-cast]
> memset((void *)((uintptr_t)new_ptr + old_byte_size), 0,
> ^
> cc1: all warnings being treated as errors
> /home/pm215/qemu/rules.mak:57: recipe for target 'block/qcow2-refcount.o' failed
> make: *** [block/qcow2-refcount.o] Error 1
>
> (old_byte_size is int64_t, so (uintptr_t)new_ptr + old_byte_size
> becomes a 64-bit addition, and then you cast it to a 32-bit
> pointer.)
Max, I think this is yours.
Kevin
^ permalink raw reply [flat|nested] 34+ messages in thread
* Re: [Qemu-devel] [PULL 00/23] Block layer patches
2015-09-14 9:57 ` Kevin Wolf
@ 2015-09-14 14:36 ` Max Reitz
0 siblings, 0 replies; 34+ messages in thread
From: Max Reitz @ 2015-09-14 14:36 UTC (permalink / raw)
To: Kevin Wolf, Peter Maydell; +Cc: QEMU Developers, Qemu-block
[-- Attachment #1: Type: text/plain, Size: 1788 bytes --]
On 14.09.2015 11:57, Kevin Wolf wrote:
> Am 14.09.2015 um 11:46 hat Peter Maydell geschrieben:
>> On 11 September 2015 at 20:40, Kevin Wolf <kwolf@redhat.com> wrote:
>>> The following changes since commit 30c38c90bd3f1bb105ebc069ac1821067c980b7c:
>>>
>>> scripts/qemu-gdb: Add brief comment describing usage (2015-09-11 17:14:50 +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 1fcbcc93872953d08cd35830d1169fed19196290:
>>>
>>> qcow2: Make qcow2_alloc_bytes() more explicit (2015-09-11 20:03:02 +0200)
>>>
>>> ----------------------------------------------------------------
>>> Block layer patches
>>>
>>> ----------------------------------------------------------------
>>
>> Hi. I'm afraid this fails to build on 32-bit:
>>
>> /home/pm215/qemu/block/qcow2-refcount.c: In function ‘realloc_refcount_array’:
>> /home/pm215/qemu/block/qcow2-refcount.c:1294:16: error: cast to
>> pointer from integer of different size [-Werror=int-to-pointer-cast]
>> memset((void *)((uintptr_t)new_ptr + old_byte_size), 0,
>> ^
>> cc1: all warnings being treated as errors
>> /home/pm215/qemu/rules.mak:57: recipe for target 'block/qcow2-refcount.o' failed
>> make: *** [block/qcow2-refcount.o] Error 1
>>
>> (old_byte_size is int64_t, so (uintptr_t)new_ptr + old_byte_size
>> becomes a 64-bit addition, and then you cast it to a 32-bit
>> pointer.)
>
> Max, I think this is yours.
Indeed, I'll send a v3 for "qcow2: Make size_to_clusters() return
uint64_t" and "iotests: Add test for checking large image files".
You decide whether you are going to include them in a new pull request
or just drop them for now.
Max
[-- Attachment #2: OpenPGP digital signature --]
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^ permalink raw reply [flat|nested] 34+ messages in thread