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block/nbd: split nbd_establish_connection out of nbd_client_connect

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We are going to implement non-blocking version of
nbd_establish_connection, which for a while will be used only for
nbd_reconnect_attempt, not for nbd_open, so we need to call it
separately.

Refactor nbd_reconnect_attempt in a way which makes next commit
simpler.

Signed-off-by: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com>
Message-Id: <20200727184751.15704-2-vsementsov@virtuozzo.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Signed-off-by: Eric Blake <eblake@redhat.com>
This commit is contained in:
Vladimir Sementsov-Ogievskiy 2020-07-27 21:47:47 +03:00 • committed by Eric Blake
parent 03a970bb6f
commit fa35591b9c
2 changed files with 38 additions and 26 deletions
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4
block/trace-events
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@ -168,8 +168,8 @@ nbd_parse_blockstatus_compliance(const char *err) "ignoring extra data from non-
nbd_structured_read_compliance(const char *type) "server sent non-compliant unaligned read %s chunk"
nbd_read_reply_entry_fail(int ret, const char *err) "ret = %d, err: %s"
nbd_co_request_fail(uint64_t from, uint32_t len, uint64_t handle, uint16_t flags, uint16_t type, const char *name, int ret, const char *err) "Request failed { .from = %" PRIu64", .len = %" PRIu32 ", .handle = %" PRIu64 ", .flags = 0x%" PRIx16 ", .type = %" PRIu16 " (%s) } ret = %d, err: %s"
nbd_client_connect(const char *export_name) "export '%s'"
nbd_client_connect_success(const char *export_name) "export '%s'"
nbd_client_handshake(const char *export_name) "export '%s'"
nbd_client_handshake_success(const char *export_name) "export '%s'"
# ssh.c
ssh_restart_coroutine(void *co) "co=%p"