From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from eggs.gnu.org ([2001:4830:134:3::10]:38382) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1fRfqq-0002oH-TZ for qemu-devel@nongnu.org; Sat, 09 Jun 2018 11:32:26 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1fRfqn-0002XK-QG for qemu-devel@nongnu.org; Sat, 09 Jun 2018 11:32:24 -0400 Received: from relay.sw.ru ([195.214.232.25]:52416) by eggs.gnu.org with esmtps (TLS1.0:DHE_RSA_AES_256_CBC_SHA1:32) (Exim 4.71) (envelope-from ) id 1fRfqn-0002WG-G7 for qemu-devel@nongnu.org; Sat, 09 Jun 2018 11:32:21 -0400 From: Vladimir Sementsov-Ogievskiy Date: Sat, 9 Jun 2018 18:32:06 +0300 Message-Id: <20180609153217.19683-1-vsementsov@virtuozzo.com> Subject: [Qemu-devel] [PATCH v3 00/11] NBD reconnect List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , To: qemu-devel@nongnu.org, qemu-block@nongnu.org Cc: armbru@redhat.com, mreitz@redhat.com, kwolf@redhat.com, pbonzini@redhat.com, eblake@redhat.com, vsementsov@virtuozzo.com, den@openvz.org Hi all. Here is NBD reconnect. The feature realized inside nbd-client driver and works as follows: There are two parameters: reconnect-attempts and reconnect-timeout. So, we will try to reconnect in case of initial connection failed or in case of connection lost. All current and new io operations will wait until we make reconnect-attempts tries to reconnect. After this, all requests will fail with EIO, but we will continue trying to reconnect. v3: 06: fix build error in function 'nbd_co_send_request': error: 'i' may be used uninitialized in this function v2 notes: Here is v2 of NBD reconnect, but it is very very different from v1, so, forget about v1. The series includes my "NBD reconnect: preliminary refactoring", with changes in 05: leave asserts (Eric). Vladimir Sementsov-Ogievskiy (11): block/nbd-client: split channel errors from export errors block/nbd: move connection code from block/nbd to block/nbd-client block/nbd-client: split connection from initialization block/nbd-client: fix nbd_reply_chunk_iter_receive block/nbd-client: don't check ioc block/nbd-client: move from quit to state block/nbd-client: rename read_reply_co to connection_co block/nbd-client: move connecting to connection_co block/nbd: add cmdline and qapi parameters for nbd reconnect block/nbd-client: nbd reconnect iotests: test nbd reconnect qapi/block-core.json | 12 +- block/nbd-client.h | 23 ++- block/nbd-client.c | 429 ++++++++++++++++++++++++++++++------------ block/nbd.c | 61 +++--- tests/qemu-iotests/220 | 68 +++++++ tests/qemu-iotests/220.out | 7 + tests/qemu-iotests/group | 1 + tests/qemu-iotests/iotests.py | 4 + 8 files changed, 445 insertions(+), 160 deletions(-) create mode 100755 tests/qemu-iotests/220 create mode 100644 tests/qemu-iotests/220.out -- 2.11.1