[LU-13190] I/O can fail with -EBADF if fresh client has no connection to OST

• Type: Bug
• Resolution: Fixed
• Priority: Minor
• Fix Version/s: Lustre 2.14.0
• Severity: 3
• Assignee: Alex Zhuravlev
• Reporter: Alex Zhuravlev

Description

otherwise it's possible to get -EBADF:

• client sends open|create intent before a connection to OST is established
• MDS replies back without UPDATE bit in LDLM lock, but with the layout
  (MDS doesn't send OBD_MD_FLMODEASIZE and back
• client's cl_default_mds_easize is still 0
• client sends getattr intent with 0-size buffer for EA
• MDS replies with no layout and LAYOUT bit
• client sets local layout to EMPTY
• all subsequent I/O fails with -EBADF

Comments

[Peter Jones]

Landed for 2.14

[Gerrit Updater]

Oleg Drokin ([e-mail]) merged in patch https://review.whamcloud.com/37400/
Subject: LU-13190 mds: send mbo_max_mdsize in open intent reply
Project: fs/lustre-release
Branch: master
Current Patch Set:
Commit: 0a80afc58b4c64f3e7478ccfe1949ba30a28dfa3

[Gerrit Updater]

Alex Zhuravlev ([e-mail]) uploaded a new patch: https://review.whamcloud.com/37400
Subject: LU-13190 mds: send mbo_max_mdsize in open intent reply
Project: fs/lustre-release
Branch: master
Current Patch Set: 1
Commit: 5592eb9b6b67bd602b0f1cc0c5b08b79ae45e891