[LU-4876] LFSCK remove entry from /REMOTE_PARENT_DIR if MDT-object name reside on the same MDT after migration

• Type: Bug
• Resolution: Unresolved
• Priority: Major
• Labels: dne2 lfsck
• Severity: 3
• Assignee: Lai Siyao
• Reporter: nasf (Inactive)

Description

When migrate directory MDT-object_A's metadata from MDT_x to MDT_y, all its children name entries needs to be moved to MDT_y. If some name entry originally referenced a remote MDT-object_B which was linked under "/REMOTE_PARENT_DIR" with a dummy name entry on MDT_y, but after the migration, the MDT-object_B and its new name entry resides on the same MDT_y, then the dummy entry for the MDT-object_B should be removed from "REMOTE_PARENT_DIR/" iff there are no links remaining on that MDT.

Issue Links

• is related to: LU-15383 DNE directories not connected to REMOTE_PARENT_DIR
• is related to: LU-5985 LFSCK 5: remove dummy name entry from /REMOTE_PARENT_DIR if the MDT-object and its name entry reside on the same MDT
• is related to: LU-15388 Wrong dotdot FID parameter for osd_add_dot_dotdot()
• is related to: LU-10329 DNE3: REMOTE_PARENT_DIR scalability
• is related to: LU-14168 e2fsck should avoid moving files into lost+found
• is related to: LU-4684 DNE3: allow migrating DNE striped directory