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From: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com>
To: qemu-block@nongnu.org
Cc: qemu-devel@nongnu.org, crosa@redhat.com, ehabkost@redhat.com,
	mreitz@redhat.com, kwolf@redhat.com, vsementsov@virtuozzo.com,
	jsnow@redhat.com
Subject: [PATCH v3 0/6] qcow2: compressed write cache
Date: Fri,  5 Mar 2021 20:35:01 +0300	[thread overview]
Message-ID: <20210305173507.393137-1-vsementsov@virtuozzo.com> (raw)

The series inherits "[PATCH 0/7] qcow2: compressed write cache"
(changed a lot, the cache is rewritten), and
"[PATCH v2(RFC) 0/3] qcow2: fix parallel rewrite and "
(the fix solution is taken from v1 instead, as the are problems with v2,
 described in cover letter)

Core changes in v3:

 - cache is rewritten and now is separated even from block-layer
 - I'm tired of trying to catch degradation when use both pagecache and
   my new cache.. So, I decided that using both caches is just a bad
   idea and in v3 cache is enabled only when qcow2 file child opened in
   O_DIRECT

Vladimir Sementsov-Ogievskiy (6):
  block-jobs: flush target at the end of .run()
  iotests: add qcow2-discard-during-rewrite
  block/qcow2: introduce inflight writes counters: fix discard
  util: implement seqcache
  block-coroutine-wrapper: allow non bdrv_ prefix
  block/qcow2: use seqcache for compressed writes

 block/coroutines.h                            |   3 +
 block/qcow2.h                                 |  13 +
 include/block/blockjob_int.h                  |  18 +
 include/qemu/seqcache.h                       |  42 ++
 block/backup.c                                |   8 +-
 block/commit.c                                |   2 +
 block/mirror.c                                |   2 +
 block/qcow2-refcount.c                        | 159 +++++++-
 block/qcow2.c                                 | 178 ++++++++-
 block/stream.c                                |   2 +
 blockjob.c                                    |  16 +
 util/seqcache.c                               | 361 ++++++++++++++++++
 MAINTAINERS                                   |   6 +
 scripts/block-coroutine-wrapper.py            |   7 +-
 .../tests/qcow2-discard-during-rewrite        |  72 ++++
 .../tests/qcow2-discard-during-rewrite.out    |  21 +
 util/meson.build                              |   1 +
 17 files changed, 893 insertions(+), 18 deletions(-)
 create mode 100644 include/qemu/seqcache.h
 create mode 100644 util/seqcache.c
 create mode 100755 tests/qemu-iotests/tests/qcow2-discard-during-rewrite
 create mode 100644 tests/qemu-iotests/tests/qcow2-discard-during-rewrite.out

-- 
2.29.2



             reply	other threads:[~2021-03-05 18:14 UTC|newest]

Thread overview: 35+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-03-05 17:35 Vladimir Sementsov-Ogievskiy [this message]
2021-03-05 17:35 ` [PATCH v3 1/6] block-jobs: flush target at the end of .run() Vladimir Sementsov-Ogievskiy
2021-03-11 16:57   ` Max Reitz
2021-03-05 17:35 ` [PATCH v3 2/6] iotests: add qcow2-discard-during-rewrite Vladimir Sementsov-Ogievskiy
2021-03-05 17:35 ` [PATCH v3 3/6] block/qcow2: introduce inflight writes counters: fix discard Vladimir Sementsov-Ogievskiy
2021-03-11 19:58   ` Max Reitz
2021-03-12  9:09     ` Vladimir Sementsov-Ogievskiy
2021-03-12 11:17       ` Max Reitz
2021-03-12 12:32         ` Vladimir Sementsov-Ogievskiy
2021-03-12 12:42           ` Vladimir Sementsov-Ogievskiy
2021-03-12 15:01             ` Max Reitz
2021-03-12 12:46           ` Vladimir Sementsov-Ogievskiy
2021-03-12 15:10             ` Max Reitz
2021-03-12 15:24               ` Vladimir Sementsov-Ogievskiy
2021-03-12 15:52                 ` Max Reitz
2021-03-12 16:03                   ` Vladimir Sementsov-Ogievskiy
2021-03-12 14:58           ` Max Reitz
2021-03-12 15:39             ` Vladimir Sementsov-Ogievskiy
2021-03-05 17:35 ` [PATCH v3 4/6] util: implement seqcache Vladimir Sementsov-Ogievskiy
2021-03-12 13:41   ` Max Reitz
2021-03-12 14:37     ` Vladimir Sementsov-Ogievskiy
2021-03-12 15:13       ` Max Reitz
2021-06-04 14:31   ` Vladimir Sementsov-Ogievskiy
2021-03-05 17:35 ` [PATCH v3 5/6] block-coroutine-wrapper: allow non bdrv_ prefix Vladimir Sementsov-Ogievskiy
2021-03-12 16:53   ` Max Reitz
2021-03-05 17:35 ` [PATCH v3 6/6] block/qcow2: use seqcache for compressed writes Vladimir Sementsov-Ogievskiy
2021-03-12 18:15   ` Max Reitz
2021-03-12 18:43     ` Vladimir Sementsov-Ogievskiy
2021-03-15  9:58       ` Max Reitz
2021-03-15 14:40         ` Vladimir Sementsov-Ogievskiy
2021-03-16 12:25           ` Max Reitz
2021-03-16 17:48             ` Vladimir Sementsov-Ogievskiy
2021-03-17  8:09               ` Max Reitz
2021-03-12 18:45     ` Vladimir Sementsov-Ogievskiy
2021-03-29 20:18     ` Vladimir Sementsov-Ogievskiy

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