From: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com>
To: qemu-block@nongnu.org
Cc: qemu-devel@nongnu.org, vsementsov@virtuozzo.com,
eblake@redhat.com, mreitz@redhat.com, kwolf@redhat.com,
rvkagan@yandex-team.ru, den@openvz.org
Subject: [PATCH v3 00/33] block/nbd: rework client connection
Date: Fri, 16 Apr 2021 11:08:38 +0300 [thread overview]
Message-ID: <20210416080911.83197-1-vsementsov@virtuozzo.com> (raw)
The series substitutes "[PATCH v2 00/10] block/nbd: move connection code to separate file"
Supersedes: <20210408140827.332915-1-vsementsov@virtuozzo.com>
so it's called v3
block/nbd.c is overcomplicated. These series is a big refactoring, which
finally drops all the complications around drained sections and context
switching, including abuse of bs->in_flight counter.
Also, at the end of the series we don't cancel reconnect on drained
sections (and don't cancel requests waiting for reconnect on drained
section begin), which fixes a problem reported by Roman.
The series is also available at tag up-nbd-client-connection-v3 in
git https://src.openvz.org/scm/~vsementsov/qemu.git
v3:
Changes in first part of the series (main thing is not using refcnt, but instead (modified) Roman's patch):
01-04: new
05: add Roman's r-b
06: new
07: now, new aio_co_schedule(NULL, thr->wait_co) is used
08: reworked, we now need also bool detached, as we don't have refcnt
09,10: add Roman's r-b
11: rebased, don't modify nbd_free_connect_thread() name at this point
12: add Roman's r-b
13: new
14: rebased
Other patches are new.
Roman Kagan (2):
block/nbd: fix channel object leak
block/nbd: ensure ->connection_thread is always valid
Vladimir Sementsov-Ogievskiy (31):
block/nbd: fix how state is cleared on nbd_open() failure paths
block/nbd: nbd_client_handshake(): fix leak of s->ioc
block/nbd: BDRVNBDState: drop unused connect_err and connect_status
util/async: aio_co_schedule(): support reschedule in same ctx
block/nbd: simplify waking of nbd_co_establish_connection()
block/nbd: drop thr->state
block/nbd: bs-independent interface for nbd_co_establish_connection()
block/nbd: make nbd_co_establish_connection_cancel() bs-independent
block/nbd: rename NBDConnectThread to NBDClientConnection
block/nbd: introduce nbd_client_connection_new()
block/nbd: introduce nbd_client_connection_release()
nbd: move connection code from block/nbd to nbd/client-connection
nbd/client-connection: use QEMU_LOCK_GUARD
nbd/client-connection: add possibility of negotiation
nbd/client-connection: implement connection retry
nbd/client-connection: shutdown connection on release
block/nbd: split nbd_handle_updated_info out of nbd_client_handshake()
block/nbd: use negotiation of NBDClientConnection
qemu-socket: pass monitor link to socket_get_fd directly
block/nbd: pass monitor directly to connection thread
block/nbd: nbd_teardown_connection() don't touch s->sioc
block/nbd: drop BDRVNBDState::sioc
nbd/client-connection: return only one io channel
block-coroutine-wrapper: allow non bdrv_ prefix
block/nbd: split nbd_co_do_establish_connection out of
nbd_reconnect_attempt
nbd/client-connection: do qio_channel_set_delay(false)
nbd/client-connection: add option for non-blocking connection attempt
block/nbd: reuse nbd_co_do_establish_connection() in nbd_open()
block/nbd: add nbd_clinent_connected() helper
block/nbd: safer transition to receiving request
block/nbd: drop connection_co
block/coroutines.h | 6 +
include/block/aio.h | 2 +-
include/block/nbd.h | 19 +
include/io/channel-socket.h | 20 +
include/qemu/sockets.h | 2 +-
block/nbd.c | 908 +++++++----------------------
io/channel-socket.c | 17 +-
nbd/client-connection.c | 364 ++++++++++++
nbd/client.c | 2 -
tests/unit/test-util-sockets.c | 16 +-
util/async.c | 8 +
util/qemu-sockets.c | 10 +-
nbd/meson.build | 1 +
scripts/block-coroutine-wrapper.py | 7 +-
14 files changed, 666 insertions(+), 716 deletions(-)
create mode 100644 nbd/client-connection.c
--
2.29.2
next reply other threads:[~2021-04-16 8:11 UTC|newest]
Thread overview: 121+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-04-16 8:08 Vladimir Sementsov-Ogievskiy [this message]
2021-04-16 8:08 ` [PATCH v3 01/33] block/nbd: fix channel object leak Vladimir Sementsov-Ogievskiy
2021-05-24 21:31 ` Eric Blake
2021-05-25 4:47 ` Vladimir Sementsov-Ogievskiy
2021-04-16 8:08 ` [PATCH v3 02/33] block/nbd: fix how state is cleared on nbd_open() failure paths Vladimir Sementsov-Ogievskiy
2021-04-21 14:00 ` Roman Kagan
2021-04-21 22:27 ` Vladimir Sementsov-Ogievskiy
2021-04-22 8:49 ` Roman Kagan
2021-06-01 21:39 ` Eric Blake
2021-04-16 8:08 ` [PATCH v3 03/33] block/nbd: ensure ->connection_thread is always valid Vladimir Sementsov-Ogievskiy
2021-06-01 21:41 ` Eric Blake
2021-04-16 8:08 ` [PATCH v3 04/33] block/nbd: nbd_client_handshake(): fix leak of s->ioc Vladimir Sementsov-Ogievskiy
2021-04-22 8:59 ` Roman Kagan
2021-04-16 8:08 ` [PATCH v3 05/33] block/nbd: BDRVNBDState: drop unused connect_err and connect_status Vladimir Sementsov-Ogievskiy
2021-06-01 21:43 ` Eric Blake
2021-04-16 8:08 ` [PATCH v3 06/33] util/async: aio_co_schedule(): support reschedule in same ctx Vladimir Sementsov-Ogievskiy
2021-04-23 10:09 ` Roman Kagan
2021-04-26 8:52 ` Vladimir Sementsov-Ogievskiy
2021-05-12 6:56 ` Paolo Bonzini
2021-05-12 7:15 ` Vladimir Sementsov-Ogievskiy
2021-05-13 21:04 ` Paolo Bonzini
2021-05-14 17:27 ` Roman Kagan
2021-05-14 21:19 ` Paolo Bonzini
2021-06-08 18:45 ` Vladimir Sementsov-Ogievskiy
2021-06-09 9:35 ` Paolo Bonzini
2021-06-09 10:24 ` Vladimir Sementsov-Ogievskiy
2021-06-09 12:17 ` Paolo Bonzini
2021-04-16 8:08 ` [PATCH v3 07/33] block/nbd: simplify waking of nbd_co_establish_connection() Vladimir Sementsov-Ogievskiy
2021-04-27 21:44 ` Roman Kagan
2021-06-02 19:05 ` Eric Blake
2021-04-16 8:08 ` [PATCH v3 08/33] block/nbd: drop thr->state Vladimir Sementsov-Ogievskiy
2021-04-27 22:23 ` Roman Kagan
2021-04-28 8:01 ` Vladimir Sementsov-Ogievskiy
2021-04-16 8:08 ` [PATCH v3 09/33] block/nbd: bs-independent interface for nbd_co_establish_connection() Vladimir Sementsov-Ogievskiy
2021-06-02 19:14 ` Eric Blake
2021-06-08 10:12 ` Vladimir Sementsov-Ogievskiy
2021-04-16 8:08 ` [PATCH v3 10/33] block/nbd: make nbd_co_establish_connection_cancel() bs-independent Vladimir Sementsov-Ogievskiy
2021-06-02 21:18 ` Eric Blake
2021-04-16 8:08 ` [PATCH v3 11/33] block/nbd: rename NBDConnectThread to NBDClientConnection Vladimir Sementsov-Ogievskiy
2021-04-27 22:28 ` Roman Kagan
2021-06-02 21:21 ` Eric Blake
2021-04-16 8:08 ` [PATCH v3 12/33] block/nbd: introduce nbd_client_connection_new() Vladimir Sementsov-Ogievskiy
2021-06-02 21:22 ` Eric Blake
2021-04-16 8:08 ` [PATCH v3 13/33] block/nbd: introduce nbd_client_connection_release() Vladimir Sementsov-Ogievskiy
2021-04-27 22:35 ` Roman Kagan
2021-04-28 8:06 ` Vladimir Sementsov-Ogievskiy
2021-06-02 21:27 ` Eric Blake
2021-06-03 11:59 ` Vladimir Sementsov-Ogievskiy
2021-06-08 10:00 ` Vladimir Sementsov-Ogievskiy
2021-06-08 14:18 ` Eric Blake
2021-04-16 8:08 ` [PATCH v3 14/33] nbd: move connection code from block/nbd to nbd/client-connection Vladimir Sementsov-Ogievskiy
2021-04-27 22:45 ` Roman Kagan
2021-04-28 8:14 ` Vladimir Sementsov-Ogievskiy
2021-06-09 15:49 ` Vladimir Sementsov-Ogievskiy
2021-06-03 15:55 ` Eric Blake
2021-04-16 8:08 ` [PATCH v3 15/33] nbd/client-connection: use QEMU_LOCK_GUARD Vladimir Sementsov-Ogievskiy
2021-04-28 6:08 ` Roman Kagan
2021-04-28 8:17 ` Vladimir Sementsov-Ogievskiy
2021-04-16 8:08 ` [PATCH v3 16/33] nbd/client-connection: add possibility of negotiation Vladimir Sementsov-Ogievskiy
2021-05-11 10:45 ` Roman Kagan
2021-05-12 6:42 ` Vladimir Sementsov-Ogievskiy
2021-06-08 19:23 ` Vladimir Sementsov-Ogievskiy
2021-04-16 8:08 ` [PATCH v3 17/33] nbd/client-connection: implement connection retry Vladimir Sementsov-Ogievskiy
2021-05-11 20:54 ` Roman Kagan
2021-06-08 10:24 ` Vladimir Sementsov-Ogievskiy
2021-06-03 16:17 ` Eric Blake
2021-06-03 17:49 ` Vladimir Sementsov-Ogievskiy
2021-06-08 10:38 ` Vladimir Sementsov-Ogievskiy
2021-04-16 8:08 ` [PATCH v3 18/33] nbd/client-connection: shutdown connection on release Vladimir Sementsov-Ogievskiy
2021-05-11 21:08 ` Roman Kagan
2021-05-12 6:39 ` Vladimir Sementsov-Ogievskiy
2021-06-03 16:20 ` Eric Blake
2021-04-16 8:08 ` [PATCH v3 19/33] block/nbd: split nbd_handle_updated_info out of nbd_client_handshake() Vladimir Sementsov-Ogievskiy
2021-05-12 8:40 ` Roman Kagan
2021-06-03 16:29 ` Eric Blake
2021-06-09 17:23 ` Vladimir Sementsov-Ogievskiy
2021-06-09 18:28 ` Eric Blake
2021-04-16 8:08 ` [PATCH v3 20/33] block/nbd: use negotiation of NBDClientConnection Vladimir Sementsov-Ogievskiy
2021-06-03 18:05 ` Eric Blake
2021-04-16 8:08 ` [PATCH v3 21/33] qemu-socket: pass monitor link to socket_get_fd directly Vladimir Sementsov-Ogievskiy
2021-04-19 9:34 ` Daniel P. Berrangé
2021-04-19 10:09 ` Vladimir Sementsov-Ogievskiy
2021-05-12 9:40 ` Roman Kagan
2021-05-12 9:59 ` Daniel P. Berrangé
2021-05-13 11:02 ` Vladimir Sementsov-Ogievskiy
2021-04-16 8:09 ` [PATCH v3 22/33] block/nbd: pass monitor directly to connection thread Vladimir Sementsov-Ogievskiy
2021-06-03 18:16 ` Eric Blake
2021-06-03 18:31 ` Vladimir Sementsov-Ogievskiy
2021-04-16 8:09 ` [PATCH v3 23/33] block/nbd: nbd_teardown_connection() don't touch s->sioc Vladimir Sementsov-Ogievskiy
2021-06-03 19:04 ` Eric Blake
2021-04-16 8:09 ` [PATCH v3 24/33] block/nbd: drop BDRVNBDState::sioc Vladimir Sementsov-Ogievskiy
2021-06-03 19:12 ` Eric Blake
2021-04-16 8:09 ` [PATCH v3 25/33] nbd/client-connection: return only one io channel Vladimir Sementsov-Ogievskiy
2021-06-03 19:58 ` Eric Blake
2021-04-16 8:09 ` [PATCH v3 26/33] block-coroutine-wrapper: allow non bdrv_ prefix Vladimir Sementsov-Ogievskiy
2021-06-03 20:00 ` Eric Blake
2021-06-03 20:53 ` Eric Blake
2021-06-04 5:29 ` Vladimir Sementsov-Ogievskiy
2021-04-16 8:09 ` [PATCH v3 27/33] block/nbd: split nbd_co_do_establish_connection out of nbd_reconnect_attempt Vladimir Sementsov-Ogievskiy
2021-06-03 20:04 ` Eric Blake
2021-06-04 5:30 ` Vladimir Sementsov-Ogievskiy
2021-04-16 8:09 ` [PATCH v3 28/33] nbd/client-connection: do qio_channel_set_delay(false) Vladimir Sementsov-Ogievskiy
2021-06-03 20:48 ` Eric Blake
2021-06-04 5:32 ` Vladimir Sementsov-Ogievskiy
2021-04-16 8:09 ` [PATCH v3 29/33] nbd/client-connection: add option for non-blocking connection attempt Vladimir Sementsov-Ogievskiy
2021-06-03 20:51 ` Eric Blake
2021-04-16 8:09 ` [PATCH v3 30/33] block/nbd: reuse nbd_co_do_establish_connection() in nbd_open() Vladimir Sementsov-Ogievskiy
2021-06-03 20:57 ` Eric Blake
2021-04-16 8:09 ` [PATCH v3 31/33] block/nbd: add nbd_clinent_connected() helper Vladimir Sementsov-Ogievskiy
2021-05-12 7:06 ` Paolo Bonzini
2021-05-12 7:19 ` Vladimir Sementsov-Ogievskiy
2021-06-03 21:08 ` Eric Blake
2021-04-16 8:09 ` [PATCH v3 32/33] block/nbd: safer transition to receiving request Vladimir Sementsov-Ogievskiy
2021-06-03 21:11 ` Eric Blake
2021-06-04 5:36 ` Vladimir Sementsov-Ogievskiy
2021-04-16 8:09 ` [PATCH v3 33/33] block/nbd: drop connection_co Vladimir Sementsov-Ogievskiy
2021-04-16 8:14 ` Vladimir Sementsov-Ogievskiy
2021-04-16 8:21 ` Vladimir Sementsov-Ogievskiy
2021-06-03 21:27 ` Eric Blake
2021-06-04 5:39 ` Vladimir Sementsov-Ogievskiy
2021-05-12 6:54 ` [PATCH v3 00/33] block/nbd: rework client connection Paolo Bonzini
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