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
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2.11.1
