[LU-18592] lod_declare_update_extents()) ASSERTION( start_index == 0 && max_comp == lo->ldo_comp_cnt )

• Type: Bug
• Resolution: Unresolved
• Priority: Major
• Severity: 3
• Assignee: Zhenyu Xu
• Reporter: Zhenyu Xu

Description

A crash happens on

kernel: LustreError: 3330576:0:lod_object.c:7227:lod_declare_update_extents() ) ASSERTION( start_index == 0 && max_comp == lo->ldo_comp_cnt ) failed:                               
kernel: LustreError: 3330576:0:(lod_object.c:7227:lod_declare_update_extents()  ) LBUG

The lod::ldo_flr_state is only meaningful for composite layout, while a plain file could get into lod_declare_update_plain()->lod_declare_update_extents() and bump into this assertion.

Comments

[Gerrit Updater]

"Zhenyu Xu <[e-mail]>" uploaded a new patch: https://review.whamcloud.com/c/fs/lustre-release/+/57572
Subject: LU-18592 lod: FLR state only meaningful for composite layout
Project: fs/lustre-release
Branch: master
Current Patch Set: 1
Commit: 6b4ba0aaf42fc082944319026980e1b836dc7ff1

[Zhenyu Xu]

Plus lod_declare_update_extents() would modify lod's layout, it needs lod_layout_mutex's protection for consistency.