OpenE2K/qemu-e2k
13
4
Fork 0
Code Issues 4 Pull Requests Projects 2 Releases Activity
ba2ab2f2ca
qemu-e2k/block
History
Max Reitz ba2ab2f2ca qcow2: Flush image after creation 
Opening the qcow2 image with BDRV_O_NO_FLUSH prevents any flushes during
the image creation. This means that the image has not yet been flushed
to disk when qemu-img create exits. This flush is delayed until the next
operation on the image involving opening it without BDRV_O_NO_FLUSH and
closing (or directly flushing) it. For large images and/or images with a
small cluster size and preallocated metadata, this flush may take a
significant amount of time and may occur unexpectedly.

Reopening the image without BDRV_O_NO_FLUSH right before the end of
qcow2_create2() results in hoisting the potentially costly flush into
the image creation, which is expected to take some time (whereas
successive image operations may be not).

Signed-off-by: Max Reitz <mreitz@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Reviewed-by: Benoit Canet <benoit@irqsave.net>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
2013-10-28 17:34:32 +01:00
..
backup.c qapi: make use of new BlockJobType 2013-10-11 10:52:54 +02:00
blkdebug.c blkdebug: Employ error parameter 2013-10-11 16:50:00 +02:00
blkverify.c blkverify: Employ error parameter 2013-10-11 16:50:00 +02:00
bochs.c bdrv: Use "Error" for opening images 2013-09-12 10:12:47 +02:00
cloop.c bdrv: Use "Error" for opening images 2013-09-12 10:12:47 +02:00
commit.c qapi: make use of new BlockJobType 2013-10-11 10:52:54 +02:00
cow.c block: Error parameter for create functions 2013-09-12 10:12:48 +02:00
curl.c bdrv: Use "Error" for opening images 2013-09-12 10:12:47 +02:00
dmg.c bdrv: Use "Error" for opening images 2013-09-12 10:12:47 +02:00
gluster.c block: introduce BlockDriver.bdrv_needs_filename to enable some drivers. 2013-09-25 16:21:28 +02:00
iscsi.c block/iscsi: reenable iscsi_co_get_block_status 2013-10-09 10:43:42 +02:00
linux-aio.c aio: drop io_flush argument 2013-08-19 15:52:19 +02:00
Makefile.objs switch raw block driver from "raw.o" to "raw_bsd.o" 2013-08-30 15:28:52 +02:00
mirror.c qapi: make use of new BlockJobType 2013-10-11 10:52:54 +02:00
nbd.c bdrv: Use "Error" for opening images 2013-09-12 10:12:47 +02:00
parallels.c bdrv: Use "Error" for opening images 2013-09-12 10:12:47 +02:00
qapi.c block/qapi: Human-readable ImageInfoSpecific dump 2013-10-11 10:52:54 +02:00
qcow2-cache.c qcow2: Use negated overflow check mask 2013-10-11 16:50:00 +02:00
qcow2-cluster.c qcow2: Use negated overflow check mask 2013-10-11 16:50:00 +02:00
qcow2-refcount.c qcow2: Make overlap check mask variable 2013-10-11 16:50:00 +02:00
qcow2-snapshot.c qcow2: Use negated overflow check mask 2013-10-11 16:50:00 +02:00
qcow2.c qcow2: Flush image after creation 2013-10-28 17:34:32 +01:00
qcow2.h qcow2: Add more overlap check bitmask macros 2013-10-11 16:50:00 +02:00
qcow.c block: Error parameter for create functions 2013-09-12 10:12:48 +02:00
qed-check.c qed: mark image clean after repair succeeds 2012-08-10 10:25:12 +02:00
qed-cluster.c Use glib memory allocation and free functions 2011-08-20 23:01:08 -05:00
qed-gencb.c Use glib memory allocation and free functions 2011-08-20 23:01:08 -05:00
qed-l2-cache.c qed: do not evict in-use L2 table cache entries 2012-03-12 15:14:06 +01:00
qed-table.c misc: move include files to include/qemu/ 2012-12-19 08:32:39 +01:00
qed.c block: Error parameter for create functions 2013-09-12 10:12:48 +02:00
qed.h block: qed - use QEMU_PACKED for on-disk structures 2013-09-25 20:51:15 +02:00
raw_bsd.c block/raw_bsd: Employ error parameter 2013-10-11 16:50:00 +02:00
raw-aio.h block: make discard asynchronous 2013-01-15 10:03:47 +01:00
raw-posix.c block/raw-posix: Employ error parameter 2013-10-11 16:50:00 +02:00
raw-win32.c block/raw-win32: Always use -errno in hdev_open 2013-10-17 14:55:46 +02:00
rbd.c rbd: avoid qemu_rbd_snap_list() memory leaks 2013-09-25 16:22:00 +02:00
sheepdog.c block: introduce BlockDriver.bdrv_needs_filename to enable some drivers. 2013-09-25 16:21:28 +02:00
snapshot.c bdrv: Use "Error" for opening images 2013-09-12 10:12:47 +02:00
ssh.c bdrv: Use "Error" for creating images 2013-09-12 10:12:48 +02:00
stream.c qapi: make use of new BlockJobType 2013-10-11 10:52:54 +02:00
vdi.c block: vdi - use QEMU_PACKED for on-disk structures 2013-09-25 20:51:05 +02:00
vhdx.c block: vhdx - add migration blocker 2013-10-02 15:24:39 +02:00
vhdx.h misc: Fix new typos in comments and strings 2013-07-27 11:22:54 +04:00
vmdk.c vmdk: fix VMFS extent parsing 2013-10-18 13:41:36 +02:00
vpc.c block/vpc: check that the image has not been truncated 2013-10-24 17:34:48 +02:00
vvfat.c block: Error parameter for create functions 2013-09-12 10:12:48 +02:00
win32-aio.c win32-aio: drop win32_aio_flush_cb() 2013-08-22 22:05:04 +02:00