[LU-3138] E2fsck sees some "Deleted inode 14 has zero dtime. Fix? no" after upgraded from 1.8 to 2.4

• Type: Bug
• Resolution: Fixed
• Priority: Blocker
• Fix Version/s: Lustre 2.4.0
• Affects Version/s: Lustre 2.4.0
• Labels: LB
• Severity: 3
• Assignee: Di Wang
• Reporter: Di Wang

Description

I found this problem when I was trying to fix some DNE problem. But it turns out this problem exists on single MDT as well. This is easy to reproduce this script

LOAD=y sh llmount.sh
tar -jxvf disk1_8-ldiskfs.tar.bz2
cp ./mdt /tmp/lustre-mdt1
cp ./ost /tmp/lustre-ost1
../utils/tunefs.lustre --writeconf --mgsnode=testnode /tmp/lustre-mdt1
e2fsck -fnvd /tmp/lustre-mdt1
../utils/tunefs.lustre --writeconf --mgsnode=testnode /tmp/lustre-ost1
mount -t lustre -o loop /tmp/lustre-mdt1 /mnt/mds1
mount -t lustre -o loop /tmp/lustre-ost1 /mnt/ost1
mount -t lustre testnode:/t32fs  /mnt/lustre
echo sleep 5 seconds
sleep 5
umount /mnt/lustre
umount /mnt/ost1
umount /mnt/mds1

e2fsck -fnvd /tmp/lustre-mdt1
sh llmountcleanup.sh

here is the e2fsck result

e2fsck -fnvd /tmp/lustre-mdt1
+ e2fsck -fnvd /tmp/lustre-mdt1
e2fsck 1.42.3.wc3 (15-Aug-2012)
Pass 1: Checking inodes, blocks, and sizes
Deleted inode 14 has zero dtime.  Fix? no

Deleted inode 15 has zero dtime.  Fix? no

Deleted inode 16 has zero dtime.  Fix? no

Deleted inode 20 has zero dtime.  Fix? no

Pass 2: Checking directory structure
Pass 3: Checking directory connectivity
Pass 4: Checking reference counts
Pass 5: Checking group summary information
Block bitmap differences:  -(16104--16112) -(16115--16119)
Fix? no

Inode bitmap differences:  -(14--16) -20
Fix? no


t32fs-MDT0000: ********** WARNING: Filesystem still has errors **********


     756 inodes used (0.76%)
       6 non-contiguous files (0.8%)
       0 non-contiguous directories (0.0%)
         # of inodes with ind/dind/tind blocks: 0/0/0
   16955 blocks used (33.91%)
       0 bad blocks
       1 large file

     181 regular files
      56 directories
       0 character device files
       0 block device files
       0 fifos
       6 links
     506 symbolic links (506 fast symbolic links)
       0 sockets
--------
     749 files
sh llmountcleanup.sh
+ sh llmountcleanup.sh
Stopping clients: testnode /mnt/lustre (opts:-f)
Stopping clients: testnode /mnt/lustre2 (opts:-f)
modules unloaded.

And these inodes turns out to be the old config log

/mnt/mds1/CONFIGS:
13 mountdata  14 t32fs-client  15 t32fs-MDT0000  20 t32fs-OST0000  16 t32fs-params