[LU-6027] Issues with EAs of orphan files and EAs with empty values

• Type: Bug
• Resolution: Fixed
• Priority: Minor
• Fix Version/s: Lustre 2.7.0, Lustre 2.5.4
• Affects Version/s: Lustre 2.7.0, Lustre 2.5.4
• Severity: 3
• Assignee: Li Wei (Inactive)
• Reporter: Li Wei (Inactive)

Description

Current b2_5 and master have the following issues with EAs:

• Setting a new EA with an empty value, which is permitted according to attr(5), succeeds without actually storing the EA to the OSD. A subsequent getxattr() call will return ENODATA.

• Calling fgetxattr() on an orphan file may get ENOENT, if it causes an EA cache refill.

Issue Links

• is related to: LU-6184 Interop 2.6.0<->2.7 sanity test_102q: flistxattr size: No such file or directory
• is related to: LU-6073 lustre/tests/*.c should use sys/xattr.h rather than attr/xattr.h