[LU-5152] Can't enforce block quota when unprivileged user change group

• Type: Bug
• Resolution: Fixed
• Priority: Minor
• Fix Version/s: Lustre 2.11.0, Lustre 2.12.0, Lustre 2.10.4
• Severity: 3
• Bugzilla ID: 13,493
• Assignee: Hongchao Zhang
• Reporter: Niu Yawei (Inactive)

Description

A quota bug which affects all versions of Lustre was recently revealed:

If an unprivileged user belongs to multiple groups, when she changes her file from one group to another, block quota won't be enforced.

Above situation was never been considered during quota design (from the first version of quota to current new quota), probably such use case is very rare in the real world, otherwise, it would be reported earlier.

I think we'd fix it in the current new quota arch to make Lustre quota complete.

Issue Links

• is duplicated by: LU-8598 flaw in the ldiskfs group quota enforcement
• is related to: LU-7266 Fix LDLM pool to make LRUR working properly
• is related to: LU-11465 OSS/MDS deadlock in 2.10.5
• is related to: LU-10048 osd-ldiskfs to truncate outside of main transaction
• is related to: LU-11227 client process hangs when lod_sync accesses deactivated OSTs
• is related to: LU-11303 slow chgrp as user when quotas are enabled