[LU-2638] corruption of MDT ".." entry in some ldiskfs directories

• Type: Technical task
• Resolution: Fixed
• Priority: Blocker
• Fix Version/s: Lustre 2.4.0, Lustre 2.1.5
• Affects Version/s: Lustre 2.4.0, Lustre 2.1.3, Lustre 2.1.5
• Labels: LB
• Environment: The MDT is formatted/modified to have the "extents" feature enabled, but I'm not sure if that is relevant for this part of the problem.
• Assignee: nasf (Inactive)
• Reporter: Andreas Dilger

Description

It appears that there is a systematic corruption of the ".." entry in the directory, possibly only affecting htree directories when the "dirdata" feature is enabled.

e2fsck 1.42.6.wc2 (10-Dec-2012)
nbp1-MDT0000 has been mounted 121 times without being checked, check forced.
Pass 1: Checking inodes, blocks, and sizes
Pass 2: Checking directory structure
[...snip...]
Entry '..' in /ROOT/arosen2/vmcluster/nodrp/T20K_alpha1_prodrun/pltfiles/plt00000 (40930307) is duplicate '..' entry.
Fix? no
Entry '..' in /ROOT/arosen2/vmcluster/nodrp/T20K_alpha1_prodrun/pltfiles/plt00000 (40930307) is duplicate '..' entry.
Fix? no
Entry '..' in /ROOT/arosen2/vmcluster/nodrp/T20K_alpha1_prodrun/pltfiles/plt00000 (40930307) is a link to directory /ROOT/arosen2/vmcluster/nodrp/T20K_alpha1_prodrun/pltfiles (40919273).
Second entry 'Header' (inode=40967687) in directory inode 40967686 should be '..'
Fix? no
Entry '..' in /ROOT/arosen2/vmcluster/nodrp/T20K_alpha1_prodrun/pltfiles/plt00033 (40967686) is duplicate '..' entry.
Fix? no
Entry '..' in /ROOT/arosen2/vmcluster/nodrp/T20K_alpha1_prodrun/pltfiles/plt00033 (40967686) is duplicate '..' entry.
Fix? no
Entry '..' in /ROOT/arosen2/vmcluster/nodrp/T20K_alpha1_prodrun/pltfiles/plt00033 (40967686) is a link to directory /ROOT/arosen2/vmcluster/nodrp/T20K_alpha1_prodrun/pltfiles (40919273).
Second entry 'Header' (inode=40971040) in directory inode 40971039 should be '..'
Fix? no
Entry '..' in /ROOT/arosen2/vmcluster/nodrp/T20K_alpha1_prodrun/pltfiles/plt00029 (40971039) is duplicate '..' entry.
Fix? no
Entry '..' in /ROOT/arosen2/vmcluster/nodrp/T20K_alpha1_prodrun/pltfiles/plt00029 (40971039) is duplicate '..' entry.
Fix? no
Entry '..' in /ROOT/arosen2/vmcluster/nodrp/T20K_alpha1_prodrun/pltfiles/plt00029 (40971039) is a link to directory /ROOT/arosen2/vmcluster/nodrp/T20K_alpha1_prodrun/pltfiles (40919273).
Second entry 'Header' (inode=44588784) in directory inode 44588782 should be '..'
Fix? no
Entry '..' in /ROOT/arosen2/vmcluster/nodrp/T20K_alpha1_prodrun/pltfiles/plt00036 (44588782) is duplicate '..' entry.
Fix? no
Entry '..' in /ROOT/arosen2/vmcluster/nodrp/T20K_alpha1_prodrun/pltfiles/plt00036 (44588782) is duplicate '..' entry.
Fix? no
Entry '..' in /ROOT/arosen2/vmcluster/nodrp/T20K_alpha1_prodrun/pltfiles/plt00036 (44588782) is a link to directory /ROOT/arosen2/vmcluster/nodrp/T20K_alpha1_prodrun/pltfiles (40919273).
Second entry 'Header' (inode=47195750) in directory inode 47195749 should be '..'
Fix? no
[...snip...]
Pass 3: Checking directory connectivity
'..' in /ROOT/arosen2/vmcluster/nodrp/T20K_alpha1_prodrun/pltfiles/plt00000 (40930307) is <The NULL inode> (0), should be /ROOT/arosen2/vmcluster/nodrp/T20K_alpha1_prodrun/pltfiles (40919273).
Fix? no
'..' in /ROOT/arosen2/vmcluster/nodrp/T20K_alpha1_prodrun/pltfiles/plt00033 (40967686) is <The NULL inode> (0), should be /ROOT/arosen2/vmcluster/nodrp/T20K_alpha1_prodrun/pltfiles (40919273).
Fix? no
'..' in /ROOT/arosen2/vmcluster/nodrp/T20K_alpha1_prodrun/pltfiles/plt00029 (40971039) is <The NULL inode> (0), should be /ROOT/arosen2/vmcluster/nodrp/T20K_alpha1_prodrun/pltfiles (40919273).
Fix? no
'..' in /ROOT/arosen2/vmcluster/nodrp/T20K_alpha1_prodrun/pltfiles/plt00036 (44588782) is <The NULL inode> (0), should be /ROOT/arosen2/vmcluster/nodrp/T20K_alpha1_prodrun/pltfiles (40919273).
Fix? no
[...snip...]