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| author | Vladimir Sementsov-Ogievskiy | 2019-10-09 10:41:57 +0200 |
|---|---|---|
| committer | Eric Blake | 2019-10-22 16:22:07 +0200 |
| commit | f7651539d80b3490207e94a494aa4b9b255edfdf (patch) | |
| tree | 33b7dc6171ed95881744e7620d68c963d932238e /python | |
| parent | qemu-coroutine-sleep: introduce qemu_co_sleep_wake (diff) | |
| download | qemu-f7651539d80b3490207e94a494aa4b9b255edfdf.tar.gz qemu-f7651539d80b3490207e94a494aa4b9b255edfdf.tar.xz qemu-f7651539d80b3490207e94a494aa4b9b255edfdf.zip | |
block/nbd: nbd reconnect
Implement reconnect. To achieve this:
1. add new modes:
connecting-wait: means, that reconnecting is in progress, and there
were small number of reconnect attempts, so all requests are
waiting for the connection.
connecting-nowait: reconnecting is in progress, there were a lot of
attempts of reconnect, all requests will return errors.
two old modes are used too:
connected: normal state
quit: exiting after fatal error or on close
Possible transitions are:
* -> quit
connecting-* -> connected
connecting-wait -> connecting-nowait (transition is done after
reconnect-delay seconds in connecting-wait mode)
connected -> connecting-wait
2. Implement reconnect in connection_co. So, in connecting-* mode,
connection_co, tries to reconnect unlimited times.
3. Retry nbd queries on channel error, if we are in connecting-wait
state.
Signed-off-by: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com>
Message-Id: <20191009084158.15614-3-vsementsov@virtuozzo.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Signed-off-by: Eric Blake <eblake@redhat.com>
Diffstat (limited to 'python')
0 files changed, 0 insertions, 0 deletions