[LU-9654] fix problem of Remove Archive on Last Unlink policy

• Type: Bug
• Resolution: Fixed
• Priority: Critical
• Fix Version/s: Lustre 2.10.1, Lustre 2.11.0
• Affects Version/s: Lustre 2.10.0
• Labels: patch
• Severity: 3
• Assignee: Li Xi (Inactive)
• Reporter: Li Xi (Inactive)

Description

mdt_handle_last_unlink() calls mdt_attr_get_complex() to get invalid attributes. However, mdt_attr_get_complex() clearups all known attributes. So, the known attribute of HSM or nlink should be checked before calling that function.

Issue Links

• is related to: LU-4640 Last unlink should trigger HSM remove by default