OpenE2K/qemu-e2k
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qemu-e2k/block
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Max Reitz 3c7f75b321 quorum: Stop marking it as a filter 
Quorum is not a filter, for example because it cannot guarantee which of
its children will serve the next request.  Thus, any of its children may
differ from the data visible to quorum's parents.

We have other filters with multiple children, but they differ in this
aspect:

- blkverify quits the whole qemu process if its children differ.  As
  such, we can always skip it when we want to skip it (as a filter node)
  by going to any of its children.  Both have the same data.

- replication generally serves requests from bs->file, so this is its
  only actually filtered child.

- Block job filters currently only have one child, but they will
  probably get more children in the future.  Still, they will always
  have only one actually filtered child.

Having "filters" as a dedicated node category only makes sense if you
can skip them by going to a one fixed child that always shows the same
data as the filter node.  Quorum cannot fulfill this, so it is not a
filter.

Signed-off-by: Max Reitz <mreitz@redhat.com>
Reviewed-by: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com>
Message-Id: <20200218103454.296704-13-mreitz@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
2020-02-18 11:55:40 +01:00
..
accounting.c block: add empty account cookie type 2019-10-10 10:56:18 +02:00
aio_task.c block: introduce aio task pool 2019-10-10 10:56:17 +02:00
backup-top.c block/backup-top: fix failure path 2020-02-06 13:47:45 +01:00
backup-top.h block: introduce backup-top filter driver 2019-10-10 10:56:18 +02:00
backup.c block/backup-top: Don't acquire context while dropping top 2020-01-27 17:19:53 +01:00
blkdebug.c blkdebug: Allow taking/unsharing permissions 2020-01-06 13:43:06 +01:00
blklogwrites.c Include qemu/module.h where needed, drop it from qemu-common.h 2019-06-12 13:18:33 +02:00
blkreplay.c block: implement bdrv_snapshot_goto for blkreplay 2019-10-14 17:12:48 +02:00
blkverify.c block: Remove bdrv_recurse_is_first_non_filter() 2020-02-18 11:55:40 +01:00
block-backend.c block: Add @exact parameter to bdrv_co_truncate() 2019-10-28 12:00:07 +01:00
block-copy.c block/block-copy: fix s->copy_size for compressed cluster 2019-11-04 09:21:45 +01:00
bochs.c block: Use QEMU_IS_ALIGNED 2019-09-16 14:48:30 +02:00
cloop.c block: Use QEMU_IS_ALIGNED 2019-09-16 14:48:30 +02:00
commit.c commit: Fix is_read for block_job_error_action() 2020-02-18 10:53:56 +01:00
copy-on-read.c block: Remove bdrv_recurse_is_first_non_filter() 2020-02-18 11:55:40 +01:00
create.c block/create: Do not abort if a block driver is not available 2019-09-13 12:18:37 +02:00
crypto.c block: Let format drivers pass @exact 2019-10-28 12:05:30 +01:00
crypto.h Clean up ill-advised or unusual header guards 2019-05-13 08:58:55 +02:00
curl.c curl: Check curl_multi_add_handle()'s return code 2019-09-16 15:31:12 +02:00
dirty-bitmap.c bitmap: Enforce maximum bitmap name length 2019-11-18 16:01:34 -06:00
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 block: Use QEMU_IS_ALIGNED 2019-09-16 14:48:30 +02:00
dmg.h Include qemu-common.h exactly where needed 2019-06-12 13:20:20 +02:00
file-posix.c block/file-posix.c: extend to use io_uring 2020-01-30 20:59:42 +00:00
file-win32.c block: Add @exact parameter to bdrv_co_truncate() 2019-10-28 12:00:07 +01:00
filter-compress.c block: Remove bdrv_recurse_is_first_non_filter() 2020-02-18 11:55:40 +01:00
gluster.c block: Add @exact parameter to bdrv_co_truncate() 2019-10-28 12:00:07 +01:00
io_uring.c block/io_uring: Remove superfluous semicolon 2020-02-18 10:54:02 +01:00
io.c block: fix crash on zero-length unaligned write and read 2020-02-07 16:46:59 +00:00
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: Don't access non-existent scsi_lba_status_descriptor 2020-01-27 17:19:53 +01:00
linux-aio.c linux-aio: increasing MAX_EVENTS to a larger hardcoded value 2020-01-13 16:41:45 +00:00
Makefile.objs block/io_uring: implements interfaces for io_uring 2020-01-30 20:59:41 +00:00
mirror.c mirror: Double-check immediately before replacing 2020-02-18 11:55:40 +01:00
nbd.c nbd: assert that Error** is not NULL in nbd_iter_channel_error 2019-12-18 08:43:19 +01:00
nfs.c block: Add @exact parameter to bdrv_co_truncate() 2019-10-28 12:00:07 +01:00
null.c replay: add BH oneshot event for block layer 2019-10-14 17:12:48 +02:00
nvme.c block/nvme: add support for discard 2019-10-28 11:34:35 +01:00
parallels.c Block patches for softfreeze: 2019-10-28 14:40:01 +00:00
parallels.h
qapi.c qapi: query-blockstat: add driver specific file-posix stats 2019-10-10 10:56:18 +02:00
qcow2-bitmap.c block/qcow2-bitmap: Remove unneeded variable assignment 2020-02-18 10:53:56 +01:00
qcow2-cache.c core: replace getpagesize() with qemu_real_host_page_size 2019-10-26 15:38:06 +02:00
qcow2-cluster.c qcow2: Fix qcow2_alloc_cluster_abort() for external data file 2020-02-18 10:53:56 +01:00
qcow2-refcount.c qcow2: update_refcount(): Reset old_table_index after qcow2_cache_put() 2020-02-18 10:53:56 +01:00
qcow2-snapshot.c qcow2: Don't round the L1 table allocation up to the sector size 2020-02-06 13:47:45 +01:00
qcow2-threads.c qcow2: Fix alignment checks in encrypted images 2020-02-18 10:53:56 +01:00
qcow2.c qcow2: Fix alignment checks in encrypted images 2020-02-18 10:53:56 +01:00
qcow2.h qcow2: Fix QCOW2_COMPRESSED_SECTOR_MASK 2019-11-07 14:37:46 +01:00
qcow.c block: Add @exact parameter to bdrv_co_truncate() 2019-10-28 12:00:07 +01:00
qed-check.c block/qed: add missed coroutine_fn markers 2019-04-30 15:29:00 +02:00
qed-cluster.c
qed-l2-cache.c
qed-table.c block/qed: add missed coroutine_fn markers 2019-04-30 15:29:00 +02:00
qed.c block: Pass truncate exact=true where reasonable 2019-10-28 12:08:45 +01:00
qed.h block/qed: add missed coroutine_fn markers 2019-04-30 15:29:00 +02:00
quorum.c quorum: Stop marking it as a filter 2020-02-18 11:55:40 +01:00
raw-format.c block: Let format drivers pass @exact 2019-10-28 12:05:30 +01:00
rbd.c block: Add @exact parameter to bdrv_co_truncate() 2019-10-28 12:00:07 +01:00
replication.c block: Remove bdrv_recurse_is_first_non_filter() 2020-02-18 11:55:40 +01:00
sheepdog.c block: Add @exact parameter to bdrv_co_truncate() 2019-10-28 12:00:07 +01:00
snapshot.c block/snapshot: rename Error ** parameter to more common errp 2019-12-18 08:43:19 +01:00
ssh.c block: Add @exact parameter to bdrv_co_truncate() 2019-10-28 12:00:07 +01:00
stream.c job: drop job_drain 2019-09-10 08:58:43 +02:00
throttle-groups.c throttle-groups: fix memory leak in throttle_group_set_limit: 2020-01-06 13:43:06 +01:00
throttle.c block: Remove bdrv_recurse_is_first_non_filter() 2020-02-18 11:55:40 +01:00
trace-events block: add trace events for io_uring 2020-01-30 20:59:42 +00:00
vdi.c block: Add @exact parameter to bdrv_co_truncate() 2019-10-28 12:00:07 +01:00
vhdx-endian.c Include qemu-common.h exactly where needed 2019-06-12 13:20:20 +02:00
vhdx-log.c block: Add @exact parameter to bdrv_co_truncate() 2019-10-28 12:00:07 +01:00
vhdx.c block: Add @exact parameter to bdrv_co_truncate() 2019-10-28 12:00:07 +01:00
vhdx.h block/vhdx: Use IEC binary prefixes for size constants 2019-04-30 15:29:00 +02:00
vmdk.c block: Add @exact parameter to bdrv_co_truncate() 2019-10-28 12:00:07 +01:00
vpc.c block: Add @exact parameter to bdrv_co_truncate() 2019-10-28 12:00:07 +01:00
vvfat.c block/vvfat: Do not unref qcow on closing backing bdrv 2020-02-18 10:53:56 +01:00
vxhs.c replay: add BH oneshot event for block layer 2019-10-14 17:12:48 +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