[LU-5791] LFSCK 5: use bottom object for consistency verification

• Type: Bug
• Resolution: Fixed
• Priority: Blocker
• Fix Version/s: Lustre 2.7.0
• Affects Version/s: Lustre 2.7.0
• Severity: 3
• Assignee: nasf (Inactive)
• Reporter: nasf (Inactive)

Description

When the LFSCK engine scans the system, it locate the object via the found FID against the low layer device that sometimes is bottom device (OSD/OSP) and sometimes is LOD. So the object handled by LFSCK sometimes is OSD-object/OSP-objecgt and sometimes is LOD-object. Such non-unity may bring trouble to some LFSCK functions. The desirable case is that all the LFSCK functions only handle bottom objects (OSD-object for local, OSP-object for remote).

Please refer to http://review.whamcloud.com/#/c/11845/6/lustre/osd-ldiskfs/osd_handler.c,cm for more discussion.

Issue Links

• is related to: LU-6138 lfsck_namespace not progressing and lfsck_stop hangs
• is related to: LU-6272 sanity-lfsck test_17: MDS deadlock