[LU-12443] sanity test_271f: @@@@@@ FAIL: expect 1 READ RPC, occured

• Type: Bug
• Resolution: Fixed
• Priority: Major
• Fix Version/s: Lustre 2.13.0
• Severity: 3
• Assignee: Mikhail Pershin
• Reporter: Mikhail Pershin

Description

Test failure shows that read-on-open happens in case when it shouldn't. The reason is bigger reply buffer than test expects.

Issue Links

• is related to: LU-13593 Fix growing message buffer

Comments

[Peter Jones]

Landed for 2.13

[Gerrit Updater]

Oleg Drokin ([e-mail]) merged in patch https://review.whamcloud.com/35243/
Subject: LU-12443 ptlrpc: fix reply buffers shrinking and growing
Project: fs/lustre-release
Branch: master
Current Patch Set:
Commit: cedbb25e984ceb85a66bc5a315fbfa05c5bcb423

[Gerrit Updater]

Mike Pershin ([e-mail]) uploaded a new patch: https://review.whamcloud.com/35243
Subject: LU-12443 ptlrpc: fix reply buffers shrinking and growing
Project: fs/lustre-release
Branch: master
Current Patch Set: 1
Commit: 93e651fc6eda1aa5c946926f45dc7d787ce7da1a

[Mikhail Pershin]

With new OPEN intent buffer for SECCTX, total allocated reply size become 256K, while test expect it be smaller, this is to be fixed in test script. Meanwhile the log analysis shows that server may also return bigger buffer back causing buffer re-allocation and resend from client. The problem is req_capsule_server_grow() being called after req_capsule_shrink(), it uses non-updated buffer lengths and pack bigger reply than needed.