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5a1dad9d5a
qemu/block
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Nir Soffer 5a1dad9d5a qemu-img: Truncate before full preallocation 
In a previous commit (qemu-img: Do not truncate before preallocation) we
moved truncate to the PREALLOC_MODE_OFF branch to avoid slowdown in
posix_fallocate().

However this change is not optimal when using PREALLOC_MODE_FULL, since
knowing the final size from the beginning could allow the file system
driver to do less allocations and possibly avoid fragmentation of the
file.

Now we truncate also before doing full preallocation.

Signed-off-by: Nir Soffer <nirsof@gmail.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
2017-02-24 16:09:23 +01:00
..
accounting.c block: Clean up includes 2016-01-20 13:36:23 +01:00
archipelago.c block: explicitly acquire aiocontext in aio callbacks that need it 2017-02-21 11:39:39 +00:00
backup.c coroutine-lock: add mutex argument to CoQueue APIs 2017-02-21 11:39:40 +00:00
blkdebug.c blkdebug: reschedule coroutine on the AioContext it is running on 2017-02-21 11:14:08 +00:00
blkreplay.c block: explicitly acquire aiocontext in bottom halves that need it 2017-02-21 11:39:39 +00:00
blkverify.c blkverify: Implement bdrv_co_preadv/pwritev/flush 2017-01-09 13:30:52 +01:00
block-backend.c block: explicitly acquire aiocontext in aio callbacks that need it 2017-02-21 11:39:39 +00:00
bochs.c block: Convert bdrv_co_preadv/pwritev to BdrvChild 2016-07-05 16:46:27 +02:00
cloop.c block: Convert bdrv_pread(v) to BdrvChild 2016-07-05 16:46:27 +02:00
commit.c blockjob: add block_job_start 2016-11-14 22:47:34 -05:00
crypto.c crypto: make PBKDF iterations configurable for LUKS format 2016-09-19 16:30:45 +01:00
curl.c block: explicitly acquire aiocontext in aio callbacks that need it 2017-02-21 11:39:39 +00:00
dirty-bitmap.c block: More operations for meta dirty bitmap 2016-10-24 17:56:07 +02:00
dmg-bz2.c dmg: Move libbz2 code to dmg-bz2.so 2016-10-07 14:14:06 +02:00
dmg.c dmg: Move libbz2 code to dmg-bz2.so 2016-10-07 14:14:06 +02:00
dmg.h dmg: Move libbz2 code to dmg-bz2.so 2016-10-07 14:14:06 +02:00
file-posix.c qemu-img: Truncate before full preallocation 2017-02-24 16:09:23 +01:00
file-win32.c block: Rename raw-{posix,win32} to file-*.c 2017-01-09 13:30:53 +01:00
gluster.c block: explicitly acquire aiocontext in bottom halves that need it 2017-02-21 11:39:39 +00:00
io.c coroutine-lock: add mutex argument to CoQueue APIs 2017-02-21 11:39:40 +00:00
iscsi-opts.c block/iscsi: statically link qemu_iscsi_opts 2017-01-27 18:07:58 +01:00
iscsi.c iscsi: Add blockdev-add support 2017-02-21 10:37:34 -05:00
linux-aio.c block: explicitly acquire aiocontext in aio callbacks that need it 2017-02-21 11:39:39 +00:00
Makefile.objs block/iscsi: statically link qemu_iscsi_opts 2017-01-27 18:07:58 +01:00
mirror.c mirror: do not increase offset during initial zero_or_discard phase 2017-02-21 10:38:00 -05:00
nbd-client.c coroutine-lock: add mutex argument to CoQueue APIs 2017-02-21 11:39:40 +00:00
nbd-client.h nbd: convert to use qio_channel_yield 2017-02-21 11:14:08 +00:00
nbd.c block/nbd: Fix the leaked visitor 2016-11-11 15:54:55 +01:00
nfs.c block: explicitly acquire aiocontext in bottom halves that need it 2017-02-21 11:39:39 +00:00
null.c block: explicitly acquire aiocontext in aio callbacks that need it 2017-02-21 11:39:39 +00:00
parallels.c block/parallels: check new image size 2016-08-05 09:59:06 +01:00
qapi.c block/qapi: reduce the execution time of qmp_query_blockstats 2017-02-12 00:47:42 +01:00
qcow2-cache.c qcow2: Remove stale comment 2016-11-25 13:51:30 +01:00
qcow2-cluster.c coroutine-lock: add mutex argument to CoQueue APIs 2017-02-21 11:39:40 +00:00
qcow2-refcount.c qcow2: Optimize the refcount-block overlap check 2017-02-12 00:47:43 +01:00
qcow2-snapshot.c block: Convert bdrv_pwrite(v/_sync) to BdrvChild 2016-07-05 16:46:27 +02:00
qcow2.c qcow2: Optimize the refcount-block overlap check 2017-02-12 00:47:43 +01:00
qcow2.h qcow2: Optimize the refcount-block overlap check 2017-02-12 00:47:43 +01:00
qcow.c migration: disallow migrate_add_blocker during migration 2017-01-24 18:00:30 +00:00
qed-check.c qed: Use DIV_ROUND_UP 2016-06-07 18:19:24 +03:00
qed-cluster.c block: explicitly acquire aiocontext in aio callbacks that need it 2017-02-21 11:39:39 +00:00
qed-gencb.c block: Clean up includes 2016-01-20 13:36:23 +01:00
qed-l2-cache.c block: Clean up includes 2016-01-20 13:36:23 +01:00
qed-table.c block: explicitly acquire aiocontext in aio callbacks that need it 2017-02-21 11:39:39 +00:00
qed.c block: explicitly acquire aiocontext in aio callbacks that need it 2017-02-21 11:39:39 +00:00
qed.h block: explicitly acquire aiocontext in timers that need it 2017-02-21 11:14:08 +00:00
quorum.c quorum: Clean up quorum_aio_get() 2017-01-09 13:30:52 +01:00
raw-format.c block: Rename raw_bsd to raw-format.c 2017-01-09 13:30:52 +01:00
rbd.c block: explicitly acquire aiocontext in aio callbacks that need it 2017-02-21 11:39:39 +00:00
replication.c blockjob: refactor backup_start as backup_job_create 2016-11-14 22:47:34 -05:00
sheepdog.c coroutine-lock: add mutex argument to CoQueue APIs 2017-02-21 11:39:40 +00:00
snapshot.c error: Remove NULL checks on error_propagate() calls 2016-06-20 16:38:13 +02:00
ssh.c block: explicitly acquire aiocontext in callbacks that need it 2017-02-21 11:39:36 +00:00
stream.c blockjob: add block_job_start 2016-11-14 22:47:34 -05:00
throttle-groups.c coroutine-lock: add mutex argument to CoQueue APIs 2017-02-21 11:39:40 +00:00
trace-events trace: clean up trace-events files 2017-01-31 17:12:15 +00:00
vdi.c migration: disallow migrate_add_blocker during migration 2017-01-24 18:00:30 +00:00
vhdx-endian.c vhdx: Use QEMU UUID API 2016-09-23 11:42:52 +08:00
vhdx-log.c block: Convert bdrv_pwrite(v/_sync) to BdrvChild 2016-07-05 16:46:27 +02:00
vhdx.c migration: disallow migrate_add_blocker during migration 2017-01-24 18:00:30 +00:00
vhdx.h block: vhdx - update PAYLOAD_BLOCK_UNMAPPED value to match 1.00 spec 2014-12-12 15:42:22 +00:00
vmdk.c block/vmdk: Fix the endian problem of buf_len and lba 2017-02-12 00:47:42 +01:00
vpc.c migration: disallow migrate_add_blocker during migration 2017-01-24 18:00:30 +00:00
vvfat.c migration: disallow migrate_add_blocker during migration 2017-01-24 18:00:30 +00:00
win32-aio.c block: explicitly acquire aiocontext in aio callbacks that need it 2017-02-21 11:39:39 +00:00
write-threshold.c block: use bdrv_add_before_write_notifier 2016-10-07 13:34:07 +02:00