qemu/include
Vladimir Sementsov-Ogievskiy 00e30f05de block/backup: use backup-top instead of write notifiers
Drop write notifiers and use filter node instead.

= Changes =

1. Add filter-node-name argument for backup qmp api. We have to do it
in this commit, as 257 needs to be fixed.

2. There are no more write notifiers here, so is_write_notifier
parameter is dropped from block-copy paths.

3. To sync with in-flight requests at job finish we now have drained
removing of the filter, we don't need rw-lock.

4. Block-copy is now using BdrvChildren instead of BlockBackends

5. As backup-top owns these children, we also move block-copy state
into backup-top's ownership.

= Iotest changes =

56: op-blocker doesn't shoot now, as we set it on source, but then
check on filter, when trying to start second backup.
To keep the test we instead can catch another collision: both jobs will
get 'drive0' job-id, as job-id parameter is unspecified. To prevent
interleaving with file-posix locks (as they are dependent on config)
let's use another target for second backup.

Also, it's obvious now that we'd like to drop this op-blocker at all
and add a test-case for two backups from one node (to different
destinations) actually works. But not in these series.

141: Output changed: prepatch, "Node is in use" comes from bdrv_has_blk
check inside qmp_blockdev_del. But we've dropped block-copy blk
objects, so no more blk objects on source bs (job blk is on backup-top
filter bs). New message is from op-blocker, which is the next check in
qmp_blockdev_add.

257: The test wants to emulate guest write during backup. They should
go to filter node, not to original source node, of course. Therefore we
need to specify filter node name and use it.

Signed-off-by: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com>
Message-id: 20191001131409.14202-6-vsementsov@virtuozzo.com
Reviewed-by: Max Reitz <mreitz@redhat.com>
Signed-off-by: Max Reitz <mreitz@redhat.com>
2019-10-10 10:56:18 +02:00
..
authz Include generated QAPI headers less 2019-08-16 13:31:51 +02:00
block block/backup: use backup-top instead of write notifiers 2019-10-10 10:56:18 +02:00
chardev Include qemu/main-loop.h less 2019-08-16 13:31:52 +02:00
crypto crypto: define cleanup functions for use with g_autoptr 2019-08-22 10:47:12 +01:00
disas include: Make headers more self-contained 2019-08-16 13:31:51 +02:00
exec memory: allow memory_region_register_iommu_notifier() to fail 2019-10-04 18:49:18 +02:00
fpu fpu: make softfloat-macros "self-contained" 2019-08-19 12:07:13 +01:00
hw ppc patch queue 2019-10-04 2019-10-07 13:49:02 +01:00
io socket: Add num connections to qio_net_listener_open_sync() 2019-09-03 23:24:42 +02:00
libdecnumber include: Make headers more self-contained 2019-08-16 13:31:51 +02:00
migration migration: register_savevm_live doesn't need dev 2019-09-12 11:15:03 +01:00
monitor Include hw/qdev-properties.h less 2019-08-16 13:31:53 +02:00
net Include qemu/queue.h slightly less 2019-08-16 13:31:52 +02:00
qapi qapi: Make visit_next_list()'s comment less confusing 2019-09-24 11:03:44 +02:00
qemu qemu/compiler.h: Add qemu_build_not_reached 2019-09-25 10:19:57 -07:00
qom hw/core: Move cpu.c, cpu.h from qom/ to hw/core/ 2019-08-21 13:24:01 +02:00
scsi scsi: explicitly list guest-recoverable sense codes 2019-07-15 11:20:42 +02:00
standard-headers kvm: i386: halt poll control MSR support 2019-08-20 17:26:17 +02:00
sysemu target/i386: expand feature words to 64 bits 2019-10-04 18:49:19 +02:00
ui ui/egl: fix framebuffer reads 2019-09-17 13:42:02 +02:00
elf.h linux-user: elf: ELF_HWCAP for s390x 2019-06-07 14:53:26 +02:00
glib-compat.h glib: bump min required glib library version to 2.48 2019-08-22 10:46:34 +01:00
qemu-common.h cutils: Move size_to_str() from "qemu-common.h" to "qemu/cutils.h" 2019-09-19 11:57:34 +02:00
qemu-io.h Include qemu-common.h exactly where needed 2019-06-12 13:20:20 +02:00
trace-tcg.h trace: get rid of generated-events.h/generated-events.c 2016-10-12 09:54:52 +02:00