LU-15671 mds: do not send OST_CREATE transno interop
Send OST_CREATE RPCs from the MDS with no_resend and no_delay
when communicating with an old OST that does not support the
OBD_CONNECT2_REPLAY_RESEND. Likewise, the OST should not reply
to the MDS RPC with rq_transno set, or this will trigger:
osp_precreate_send() ASSERTION(req->rq_transno == 0) failed
This can be avoided if the MDS is upgraded before the OSS, but
will always be hit if OSS is upgraded first.
After 2.20.53 the MDS/OSS assume that this is always true, since
rolling upgrades are unsupported for larger version differences.
Test-Parameters: testgroup=rolling-upgrade-oss
Fixes:
63e17799a3 ("LU-8367 osp: enable replay for precreation request")
Signed-off-by: Andreas Dilger <adilger@whamcloud.com>
Signed-off-by: Sergey Cheremencev <scherementsev@ddn.com>
Change-Id: I1ab601a2f55540dd75cf24838f7cdb7f823ed42c
Reviewed-on: https://review.whamcloud.com/c/fs/lustre-release/+/51056
Tested-by: Maloo <maloo@whamcloud.com>
Tested-by: jenkins <devops@whamcloud.com>
Reviewed-by: Alex Zhuravlev <bzzz@whamcloud.com>
Reviewed-by: Oleg Drokin <green@whamcloud.com>