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Max Reitz cdf3bc934a mirror: Fix bdrv_has_zero_init() use 
bdrv_has_zero_init() only has meaning for newly created images or image
areas.  If the mirror job itself did not create the image, it cannot
rely on bdrv_has_zero_init()'s result to carry any meaning.

This is the case for drive-mirror with mode=existing and always for
blockdev-mirror.

Note that we only have to zero-initialize the target with sync=full,
because other modes actually do not promise that the target will contain
the same data as the source after the job -- sync=top only promises to
copy anything allocated in the top layer, and sync=none will only copy
new I/O.  (Which is how mirror has always handled it.)

Signed-off-by: Max Reitz <mreitz@redhat.com>
Message-id: 20190724171239.8764-3-mreitz@redhat.com
Reviewed-by: Maxim Levitsky <mlevitsk@redhat.com>
Signed-off-by: Max Reitz <mreitz@redhat.com>
 		2019-08-19 17:13:26 +02:00
..
Makefile.objs ssh: switch from libssh2 to libssh 2019-06-24 16:01:04 +02:00
accounting.c block/accounting: introduce latency histogram 2018-03-19 14:58:37 -05:00
backup.c block/backup: refactor write_flags 2019-08-16 18:29:43 -04:00
blkdebug.c blkdebug: Inject errors on .bdrv_co_block_status() 2019-06-14 14:16:57 +02:00
blklogwrites.c Include qemu/module.h where needed, drop it from qemu-common.h 2019-06-12 13:18:33 +02:00
blkreplay.c Include qemu/module.h where needed, drop it from qemu-common.h 2019-06-12 13:18:33 +02:00
blkverify.c Include qemu/module.h where needed, drop it from qemu-common.h 2019-06-12 13:18:33 +02:00
block-backend.c Block layer patches: 2019-08-16 16:43:46 +01:00
bochs.c Include qemu-common.h exactly where needed 2019-06-12 13:20:20 +02:00
cloop.c Include qemu-common.h exactly where needed 2019-06-12 13:20:20 +02:00
commit.c block-backend: Queue requests while drained 2019-08-16 10:25:16 +02:00
copy-on-read.c block/copy-on-read: Fix permissions for inactive node 2019-07-30 12:25:43 +02:00
create.c Include qemu/main-loop.h less 2019-08-16 13:31:52 +02:00
crypto.c LUKS: support preallocation 2019-08-19 17:13:26 +02:00
crypto.h Clean up ill-advised or unusual header guards 2019-05-13 08:58:55 +02:00
curl.c Include qemu/module.h where needed, drop it from qemu-common.h 2019-06-12 13:18:33 +02:00
dirty-bitmap.c qapi: implement block-dirty-bitmap-remove transaction action 2019-08-16 16:28:03 -04:00
dmg-bz2.c Include qemu-common.h exactly where needed 2019-06-12 13:20:20 +02:00
dmg-lzfse.c block: adding lzfse decompressing support as a module. 2018-12-14 11:52:40 +01:00
dmg.c Include qemu-common.h exactly where needed 2019-06-12 13:20:20 +02:00
dmg.h Include qemu-common.h exactly where needed 2019-06-12 13:20:20 +02:00
file-posix.c block: fix NetBSD qemu-iotests failure 2019-08-17 09:02:59 +02:00
file-win32.c avoid TABs in files that only contain a few 2019-01-11 15:46:56 +01:00
gluster.c gluster: fix .bdrv_reopen_prepare when backing file is a JSON object 2019-07-15 15:48:41 +02:00
io.c nbd patches for 2019-08-15 2019-08-16 15:53:37 +01:00
iscsi-opts.c Include qemu/module.h where needed, drop it from qemu-common.h 2019-06-12 13:18:33 +02:00
iscsi.c iscsi: base all handling of check condition on scsi_sense_to_errno 2019-07-15 11:20:42 +02:00
linux-aio.c Include qemu-common.h exactly where needed 2019-06-12 13:20:20 +02:00
mirror.c mirror: Fix bdrv_has_zero_init() use 2019-08-19 17:13:26 +02:00
nbd.c nbd patches for 2019-08-15 2019-08-16 15:53:37 +01:00
nfs.c Clean up inclusion of sysemu/sysemu.h 2019-08-16 13:31:53 +02:00
null.c Include qemu/module.h where needed, drop it from qemu-common.h 2019-06-12 13:18:33 +02:00
nvme.c Include qemu/main-loop.h less 2019-08-16 13:31:52 +02:00
parallels.c block: Add BlockBackend.ctx 2019-06-04 15:22:22 +02:00
parallels.h Clean up includes 2018-02-09 05:05:11 +01:00
qapi.c qapi: add dirty-bitmaps to query-named-block-nodes result 2019-08-16 18:29:43 -04:00
qcow.c block/qcow: Improve error when opening qcow2 files as qcow 2019-07-08 16:00:26 +02:00
qcow2-bitmap.c qcow2-bitmap: initialize bitmap directory alignment 2019-05-28 20:30:55 +02:00
qcow2-cache.c Include qemu-common.h exactly where needed 2019-06-12 13:20:20 +02:00
qcow2-cluster.c Include qemu-common.h exactly where needed 2019-06-12 13:20:20 +02:00
qcow2-refcount.c Include qemu-common.h exactly where needed 2019-06-12 13:20:20 +02:00
qcow2-snapshot.c qcow2.h: add missing include 2019-05-28 20:30:55 +02:00
qcow2-threads.c qcow2: do encryption in threads 2019-05-28 20:30:55 +02:00
qcow2.c Include qemu/main-loop.h less 2019-08-16 13:31:52 +02:00
qcow2.h block: avoid recursive block_status call if possible 2019-06-04 15:20:41 +02:00
qed-check.c block/qed: add missed coroutine_fn markers 2019-04-30 15:29:00 +02:00
qed-cluster.c qed: protect table cache with CoMutex 2017-07-17 11:34:11 +08:00
qed-l2-cache.c qed: protect table cache with CoMutex 2017-07-17 11:34:11 +08:00
qed-table.c block/qed: add missed coroutine_fn markers 2019-04-30 15:29:00 +02:00
qed.c Include qemu/main-loop.h less 2019-08-16 13:31:52 +02:00
qed.h block/qed: add missed coroutine_fn markers 2019-04-30 15:29:00 +02:00
quorum.c Include qemu/module.h where needed, drop it from qemu-common.h 2019-06-12 13:18:33 +02:00
raw-format.c Include qemu/module.h where needed, drop it from qemu-common.h 2019-06-12 13:18:33 +02:00
rbd.c block/rbd: increase dynamically the image size 2019-07-02 03:53:04 +02:00
replication.c block/backup: Add mirror sync mode 'bitmap' 2019-08-16 16:28:02 -04:00
sheepdog.c Include qemu/main-loop.h less 2019-08-16 13:31:52 +02:00
snapshot.c block/snapshot: remove bdrv_snapshot_delete_by_id_or_name 2019-02-25 15:03:18 +01:00
ssh.c ssh: switch from libssh2 to libssh 2019-06-24 16:01:04 +02:00
stream.c block/stream: use BDRV_REQ_PREFETCH 2019-08-15 13:22:13 -05:00
throttle-groups.c Include qemu/main-loop.h less 2019-08-16 13:31:52 +02:00
throttle.c Include qemu/module.h where needed, drop it from qemu-common.h 2019-06-12 13:18:33 +02:00
trace-events block/backup: teach TOP to never copy unallocated regions 2019-08-16 16:28:03 -04:00
vdi.c block: Add BlockBackend.ctx 2019-06-04 15:22:22 +02:00
vhdx-endian.c Include qemu-common.h exactly where needed 2019-06-12 13:20:20 +02:00
vhdx-log.c Include qemu/module.h where needed, drop it from qemu-common.h 2019-06-12 13:18:33 +02:00
vhdx.c block: Add BlockBackend.ctx 2019-06-04 15:22:22 +02:00
vhdx.h block/vhdx: Use IEC binary prefixes for size constants 2019-04-30 15:29:00 +02:00
vmdk.c vmdk: Add read-only support for seSparse snapshots 2019-06-24 15:53:02 +02:00
vpc.c block: Add BlockBackend.ctx 2019-06-04 15:22:22 +02:00
vvfat.c qemu-common: Move qemu_isalnum() etc. to qemu/ctype.h 2019-06-11 20:22:09 +02:00
vxhs.c Include qemu/module.h where needed, drop it from qemu-common.h 2019-06-12 13:18:33 +02:00
win32-aio.c Include qemu/module.h where needed, drop it from qemu-common.h 2019-06-12 13:18:33 +02:00
write-threshold.c qapi: Drop qapi_event_send_FOO()'s Error ** argument 2018-08-28 18:21:38 +02:00