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Ashijeet Acharya fe44dc9180 migration: disallow migrate_add_blocker during migration 
If a migration is already in progress and somebody attempts
to add a migration blocker, this should rightly fail.

Add an errp parameter and a retcode return value to migrate_add_blocker.

Signed-off-by: John Snow <jsnow@redhat.com>
Signed-off-by: Ashijeet Acharya <ashijeetacharya@gmail.com>
Message-Id: <1484566314-3987-5-git-send-email-ashijeetacharya@gmail.com>
Reviewed-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
Acked-by: Greg Kurz <groug@kaod.org>
Signed-off-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
  Merged with recent 'Allow invtsc migration' change
2017-01-24 18:00:30 +00:00
..
accounting.c
block: Clean up includes
2016-01-20 13:36:23 +01:00
archipelago.c
block: use aio_bh_schedule_oneshot
2016-10-07 13:34:07 +02:00
backup.c
blockjob: refactor backup_start as backup_job_create
2016-11-14 22:47:34 -05:00
blkdebug.c
blkdebug: Implement bdrv_co_preadv/pwritev/flush
2017-01-09 13:30:52 +01:00
blkreplay.c
replay: allow replay stopping and restarting
2016-09-27 11:57:30 +02:00
blkverify.c
blkverify: Implement bdrv_co_preadv/pwritev/flush
2017-01-09 13:30:52 +01:00
block-backend.c
block-backend: Always notify on blk_eject
2016-11-14 11:15:54 -05:00
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
aio: add AioPollFn and io_poll() interface
2017-01-03 16:38:48 +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
block: Rename raw-{posix,win32} to file-*.c
2017-01-09 13:30:53 +01:00
file-win32.c
block: Rename raw-{posix,win32} to file-*.c
2017-01-09 13:30:53 +01:00
gluster.c
block: Rename raw-{posix,win32} to file-*.c
2017-01-09 13:30:53 +01:00
io.c
block: get rid of bdrv_io_unplugged_begin/end
2017-01-16 13:25:17 +00:00
iscsi.c
aio: add AioPollFn and io_poll() interface
2017-01-03 16:38:48 +00:00
linux-aio.c
linux-aio: poll ring for completions
2017-01-03 16:38:48 +00:00
Makefile.objs
block: Rename raw-{posix,win32} to file-*.c
2017-01-09 13:30:53 +01:00
mirror.c
mirror: do not flush every time the disks are synced
2016-11-14 22:49:26 -05:00
nbd-client.c
aio: add AioPollFn and io_poll() interface
2017-01-03 16:38:48 +00:00
nbd-client.h
nbd: Implement NBD_CMD_WRITE_ZEROES on client
2016-11-02 09:28:56 +01:00
nbd.c
block/nbd: Fix the leaked visitor
2016-11-11 15:54:55 +01:00
nfs.c
aio: add AioPollFn and io_poll() interface
2017-01-03 16:38:48 +00:00
null.c
block: use aio_bh_schedule_oneshot
2016-10-07 13:34:07 +02:00
parallels.c
block/parallels: check new image size
2016-08-05 09:59:06 +01:00
qapi.c
qapi: rename QmpOutputVisitor to QObjectOutputVisitor
2016-10-25 16:25:54 +02:00
qcow2-cache.c
qcow2: Remove stale comment
2016-11-25 13:51:30 +01:00
qcow2-cluster.c
qcow2: Support BDRV_REQ_MAY_UNMAP
2016-10-24 17:54:03 +02:00
qcow2-refcount.c
block: Convert bdrv_discard() to byte-based
2016-07-20 14:11:55 +01:00
qcow2-snapshot.c
block: Convert bdrv_pwrite(v/_sync) to BdrvChild
2016-07-05 16:46:27 +02:00
qcow2.c
qcow2: Don't strand clusters near 2G intervals during commit
2016-12-06 15:37:02 +01:00
qcow2.h
qcow2: Remove stale FIXME comment
2016-11-11 15:54:55 +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: Clean up includes
2016-01-20 13:36:23 +01:00
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: introduce BDRV_POLL_WHILE
2016-10-28 21:50:18 +08:00
qed.c
qed: Implement .bdrv_drain
2016-10-28 21:50:18 +08:00
qed.h
block: use aio_bh_schedule_oneshot
2016-10-07 13:34:07 +02:00
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
rbd: make the code more readable
2016-11-01 07:55:57 -04:00
replication.c
blockjob: refactor backup_start as backup_job_create
2016-11-14 22:47:34 -05:00
sheepdog.c
aio: add AioPollFn and io_poll() interface
2017-01-03 16:38:48 +00:00
snapshot.c
error: Remove NULL checks on error_propagate() calls
2016-06-20 16:38:13 +02:00
ssh.c
aio: add AioPollFn and io_poll() interface
2017-01-03 16:38:48 +00:00
stream.c
blockjob: add block_job_start
2016-11-14 22:47:34 -05:00
throttle-groups.c
throttle: Correct access to wrong BlockBackendPublic structures
2016-10-24 17:54:03 +02:00
trace-events
block: Rename raw-{posix,win32} to file-*.c
2017-01-09 13:30:53 +01:00
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
migration: disallow migrate_add_blocker during migration
2017-01-24 18:00:30 +00:00
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
aio: add AioPollFn and io_poll() interface
2017-01-03 16:38:48 +00:00
write-threshold.c
block: use bdrv_add_before_write_notifier
2016-10-07 13:34:07 +02:00