[LU-3871] e2fsck reports inode reference count error

• Type: Bug
• Resolution: Fixed
• Priority: Critical
• Fix Version/s: Lustre 2.5.0
• Affects Version/s: Lustre 2.5.0
• Severity: 3
• Assignee: Di Wang
• Reporter: Niu Yawei (Inactive)

Description

It can be easily reproduced by:

sh llmount.sh
....
sh llmountcleanup.sh
....
e2fsck -fn $ost_dev

The e2fsck shows:

e2fsck 1.42.7.wc1 (12-Apr-2013)
Pass 1: Checking inodes, blocks, and sizes
Pass 2: Checking directory structure
Pass 3: Checking directory connectivity
Pass 4: Checking reference counts
Inode 90 ref count is 1, should be 2.  Fix? no

Inode 94 ref count is 1, should be 2.  Fix? no

Inode 105 ref count is 1, should be 2.  Fix? no

Inode 107 ref count is 1, should be 2.  Fix? no

Pass 5: Checking group summary information

lustre-OST0000: ********** WARNING: Filesystem still has errors **********

lustre-OST0000: 293/50016 files (0.7% non-contiguous), 9608/50000 blocks

I tracked the problem and looks it's introduced by commit: e0702769f267dd009a6287bbc9da2760079a101d (LU-3126 osd: remove fld lookup during configuration)

Issue Links

• duplicates: LU-3996 LustreError: 8136:0:(llog_osd.c:241:llog_osd_read_header()) MGS-osd: error reading log header from [0xa:0xa:0x0]: rc = -14