From: Andrey Shinkevich via <qemu-devel@nongnu.org>
To: qemu-block@nongnu.org
Cc: qemu-devel@nongnu.org, kwolf@redhat.com, mreitz@redhat.com,
stefanha@redhat.com, fam@euphon.net, jsnow@redhat.com,
armbru@redhat.com, eblake@redhat.com, den@openvz.org,
vsementsov@virtuozzo.com, andrey.shinkevich@virtuozzo.com
Subject: [PATCH v10 8/9] block: remove unused backing-file name parameter
Date: Tue, 29 Sep 2020 15:38:28 +0300 [thread overview]
Message-ID: <1601383109-110988-9-git-send-email-andrey.shinkevich@virtuozzo.com> (raw)
In-Reply-To: <1601383109-110988-1-git-send-email-andrey.shinkevich@virtuozzo.com>
The block stream QMP parameter backing-file is in use no more. It
designates a backing file name to set in QCOW2 image header after the
block stream job finished. The base file name is used instead.
Signed-off-by: Andrey Shinkevich <andrey.shinkevich@virtuozzo.com>
---
block/monitor/block-hmp-cmds.c | 2 +-
block/stream.c | 6 +-----
blockdev.c | 17 +----------------
include/block/block_int.h | 2 +-
qapi/block-core.json | 17 +----------------
5 files changed, 5 insertions(+), 39 deletions(-)
diff --git a/block/monitor/block-hmp-cmds.c b/block/monitor/block-hmp-cmds.c
index 4e66775..5f19499 100644
--- a/block/monitor/block-hmp-cmds.c
+++ b/block/monitor/block-hmp-cmds.c
@@ -506,7 +506,7 @@ void hmp_block_stream(Monitor *mon, const QDict *qdict)
int64_t speed = qdict_get_try_int(qdict, "speed", 0);
qmp_block_stream(true, device, device, base != NULL, base, false, NULL,
- false, NULL, qdict_haskey(qdict, "speed"), speed, true,
+ qdict_haskey(qdict, "speed"), speed, true,
BLOCKDEV_ON_ERROR_REPORT, false, NULL, false, false, false,
false, &error);
diff --git a/block/stream.c b/block/stream.c
index b0719e9..fe2663f 100644
--- a/block/stream.c
+++ b/block/stream.c
@@ -34,7 +34,6 @@ typedef struct StreamBlockJob {
BlockDriverState *base_overlay; /* COW overlay (stream from this) */
BlockDriverState *above_base; /* Node directly above the base */
BlockdevOnError on_error;
- char *backing_file_str;
bool bs_read_only;
bool chain_frozen;
} StreamBlockJob;
@@ -103,8 +102,6 @@ static void stream_clean(Job *job)
blk_set_perm(bjob->blk, 0, BLK_PERM_ALL, &error_abort);
bdrv_reopen_set_read_only(bs, true, NULL);
}
-
- g_free(s->backing_file_str);
}
static int coroutine_fn stream_run(Job *job, Error **errp)
@@ -220,7 +217,7 @@ static const BlockJobDriver stream_job_driver = {
};
void stream_start(const char *job_id, BlockDriverState *bs,
- BlockDriverState *base, const char *backing_file_str,
+ BlockDriverState *base,
int creation_flags, int64_t speed,
BlockdevOnError on_error,
const char *filter_node_name,
@@ -295,7 +292,6 @@ void stream_start(const char *job_id, BlockDriverState *bs,
s->base_overlay = base_overlay;
s->above_base = above_base;
- s->backing_file_str = g_strdup(backing_file_str);
s->bs_read_only = bs_read_only;
s->chain_frozen = true;
diff --git a/blockdev.c b/blockdev.c
index d719c47..b223601 100644
--- a/blockdev.c
+++ b/blockdev.c
@@ -2486,7 +2486,6 @@ out:
void qmp_block_stream(bool has_job_id, const char *job_id, const char *device,
bool has_base, const char *base,
bool has_base_node, const char *base_node,
- bool has_backing_file, const char *backing_file,
bool has_speed, int64_t speed,
bool has_on_error, BlockdevOnError on_error,
bool has_filter_node_name, const char *filter_node_name,
@@ -2498,7 +2497,6 @@ void qmp_block_stream(bool has_job_id, const char *job_id, const char *device,
BlockDriverState *base_bs = NULL;
AioContext *aio_context;
Error *local_err = NULL;
- const char *base_name = NULL;
int job_flags = JOB_DEFAULT;
if (!has_on_error) {
@@ -2526,7 +2524,6 @@ void qmp_block_stream(bool has_job_id, const char *job_id, const char *device,
goto out;
}
assert(bdrv_get_aio_context(base_bs) == aio_context);
- base_name = base;
}
if (has_base_node) {
@@ -2541,7 +2538,6 @@ void qmp_block_stream(bool has_job_id, const char *job_id, const char *device,
}
assert(bdrv_get_aio_context(base_bs) == aio_context);
bdrv_refresh_filename(base_bs);
- base_name = base_bs->filename;
}
/* Check for op blockers in the whole chain between bs and base */
@@ -2553,17 +2549,6 @@ void qmp_block_stream(bool has_job_id, const char *job_id, const char *device,
}
}
- /* if we are streaming the entire chain, the result will have no backing
- * file, and specifying one is therefore an error */
- if (base_bs == NULL && has_backing_file) {
- error_setg(errp, "backing file specified, but streaming the "
- "entire chain");
- goto out;
- }
-
- /* backing_file string overrides base bs filename */
- base_name = has_backing_file ? backing_file : base_name;
-
if (has_auto_finalize && !auto_finalize) {
job_flags |= JOB_MANUAL_FINALIZE;
}
@@ -2571,7 +2556,7 @@ void qmp_block_stream(bool has_job_id, const char *job_id, const char *device,
job_flags |= JOB_MANUAL_DISMISS;
}
- stream_start(has_job_id ? job_id : NULL, bs, base_bs, base_name,
+ stream_start(has_job_id ? job_id : NULL, bs, base_bs,
job_flags, has_speed ? speed : 0, on_error,
filter_node_name, &local_err);
if (local_err) {
diff --git a/include/block/block_int.h b/include/block/block_int.h
index f782737..bbe2ee6 100644
--- a/include/block/block_int.h
+++ b/include/block/block_int.h
@@ -1147,7 +1147,7 @@ int is_windows_drive(const char *filename);
* BlockDriverState.
*/
void stream_start(const char *job_id, BlockDriverState *bs,
- BlockDriverState *base, const char *backing_file_str,
+ BlockDriverState *base,
int creation_flags, int64_t speed,
BlockdevOnError on_error,
const char *filter_node_name,
diff --git a/qapi/block-core.json b/qapi/block-core.json
index 32fb097..6358606 100644
--- a/qapi/block-core.json
+++ b/qapi/block-core.json
@@ -2512,21 +2512,6 @@
# @base-node: the node name of the backing file.
# It cannot be set if @base is also set. (Since 2.8)
#
-# @backing-file: The backing file string to write into the top
-# image. This filename is not validated.
-#
-# If a pathname string is such that it cannot be
-# resolved by QEMU, that means that subsequent QMP or
-# HMP commands must use node-names for the image in
-# question, as filename lookup methods will fail.
-#
-# If not specified, QEMU will automatically determine
-# the backing file string to use, or error out if there
-# is no obvious choice. Care should be taken when
-# specifying the string, to specify a valid filename or
-# protocol.
-# (Since 2.1)
-#
# @speed: the maximum speed, in bytes per second
#
# @on-error: the action to take on an error (default report).
@@ -2566,7 +2551,7 @@
##
{ 'command': 'block-stream',
'data': { '*job-id': 'str', 'device': 'str', '*base': 'str',
- '*base-node': 'str', '*backing-file': 'str', '*speed': 'int',
+ '*base-node': 'str', '*speed': 'int',
'*on-error': 'BlockdevOnError',
'*filter-node-name': 'str',
'*auto-finalize': 'bool', '*auto-dismiss': 'bool' } }
--
1.8.3.1
next prev parent reply other threads:[~2020-09-29 12:50 UTC|newest]
Thread overview: 25+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-09-29 12:38 [PATCH v10 0/9] Apply COR-filter to the block-stream permanently Andrey Shinkevich via
2020-09-29 12:38 ` [PATCH v10 1/9] copy-on-read: Support preadv/pwritev_part functions Andrey Shinkevich via
2020-09-29 12:38 ` [PATCH v10 2/9] copy-on-read: add filter append/drop functions Andrey Shinkevich via
2020-10-05 13:34 ` Vladimir Sementsov-Ogievskiy
2020-10-05 16:23 ` Andrey Shinkevich
2020-09-29 12:38 ` [PATCH v10 3/9] qapi: add filter-node-name to block-stream Andrey Shinkevich via
2020-09-29 12:38 ` [PATCH v10 4/9] copy-on-read: pass base node name to COR driver Andrey Shinkevich via
2020-10-05 14:50 ` Vladimir Sementsov-Ogievskiy
2020-09-29 12:38 ` [PATCH v10 5/9] copy-on-read: limit guest COR activity to base in " Andrey Shinkevich via
2020-10-05 14:58 ` Vladimir Sementsov-Ogievskiy
2020-10-05 16:45 ` Andrey Shinkevich
2020-10-05 18:18 ` Andrey Shinkevich
2020-09-29 12:38 ` [PATCH v10 6/9] copy-on-read: skip non-guest reads if no copy needed Andrey Shinkevich via
2020-10-07 10:06 ` Vladimir Sementsov-Ogievskiy
2020-10-07 19:01 ` Andrey Shinkevich
2020-10-07 19:28 ` Vladimir Sementsov-Ogievskiy
2020-10-09 12:56 ` Andrey Shinkevich
2020-09-29 12:38 ` [PATCH v10 7/9] stream: skip filters when writing backing file name to QCOW2 header Andrey Shinkevich via
2020-10-07 10:14 ` Vladimir Sementsov-Ogievskiy
2020-09-29 12:38 ` Andrey Shinkevich via [this message]
2020-10-07 10:21 ` [PATCH v10 8/9] block: remove unused backing-file name parameter Vladimir Sementsov-Ogievskiy
2020-10-07 19:32 ` Andrey Shinkevich
2020-09-29 12:38 ` [PATCH v10 9/9] block: apply COR-filter to block-stream jobs Andrey Shinkevich via
2020-10-07 17:27 ` Andrey Shinkevich
2020-10-07 17:39 ` Andrey Shinkevich
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