linux-ext4 - Reg: loical volume file system is getting corrupted after multiple reboots.

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Date:   Mon, 30 Apr 2018 23:57:16 +0530
From:   RAJESH DASARI <raajeshdasari@...il.com>
To:     linux-ext4@...r.kernel.org
Subject: Reg: loical volume file system is getting corrupted after multiple reboots.

Hi ,

We are noticing an issue with logical volume file system is getting
corrupted after restarting the machine for multiple times.

This issue we have started noticing after upgrading the kernel to 4.4.121.

while running tune2fs -c 1 /dev/VG_NEW/state to set the
mmax_mounts_count we are noticing the error.

tune2fs -c 1 /dev/VG_NEW/state
tune2fs 1.44.0 (7-Mar-2018)
tune2fs: The ext2 superblock is corrupt while trying to open /dev/VG_NEW/state
Couldn't find valid filesystem superblock.

lvs command output is below (there are other logical volumes and
volume groups also along with state volume, I have not pasted them to
minimize this post).
Important thing to note here is always state volume only is getting
corrupted and no file system corruption seen on other logical volumes.

lvs

  LV                                                            VG
   Attr       LSize    Pool Origin Data%  Meta%  Move Log Cpy%Sync
Convert

  state                                                         VG_NEW
-wi-a----- 1000.00m

blkid command output is below

blkid
/dev/mapper/VG_NEW--state: LABEL="state"
UUID="57f82106-3fd2-4d8c-9cbe-676dc58d5405" SEC_TYPE="ext2"
TYPE="ext3"
/dev/mapper/VG_NEW--backup: LABEL="backup"
UUID="2771bdac-f005-4bde-88a1-5ace80faa89f" SEC_TYPE="ext2"
TYPE="ext3"
/dev/mapper/VG_NEW--ErrorInformation: LABEL="ErrorInformati"
UUID="e5f18c5a-aec8-498a-8feb-b81686bf2ff9" SEC_TYPE="ext2"
TYPE="ext3"

please find the output of mount command.

 mount -o noatime -t ext4 /dev/VG_NEW/state /mnt/state
[  271.786492] EXT4-fs (dm-0): ext4_check_descriptors: Block bitmap
for group 0 not in group (block 64)!
[  271.795731] EXT4-fs (dm-0): group descriptors corrupted!
mount: mounting /dev/VG_NEW/state on /mnt/state failed: Structure needs cleaning
-bash-4.4#

when i tried to recover , recovery was successful but after multiple
reboots we have seen this issue again.
please find the output of e2fsck

e2fsck -f -y /dev/VG_NEW/state
e2fsck 1.44.0 (7-Mar-2018)
ext2fs_open2: The ext2 superblock is corrupt
e2fsck: Superblock invalid, trying backup blocks...
Pass 1: Checking inodes, blocks, and sizes
Pass 2: Checking directory structure
Pass 3: Checking directory connectivity
Pass 4: Checking reference counts
Pass 5: Checking group summary information
Free blocks count wrong for group #0 (28095, counted=24283).
Fix? yes

Free blocks count wrong for group #2 (32266, counted=32128).
Fix? yes

Free blocks count wrong for group #6 (32266, counted=32029).
Fix? yes

Free blocks count wrong (243372, counted=243370).
Fix? yes

Free inodes count wrong for group #0 (7989, counted=7988).
Fix? yes

Free inodes count wrong for group #2 (8000, counted=7829).
Fix? yes

Directories count wrong for group #2 (0, counted=37).
Fix? yes

Free inodes count wrong for group #6 (8000, counted=7881).
Fix? yes

Directories count wrong for group #6 (0, counted=52).
Fix? yes

Free inodes count wrong (63700, counted=63698).
Fix? yes

state: ***** FILE SYSTEM WAS MODIFIED *****
state: 302/64000 files (2.6% non-contiguous), 12630/256000 blocks
-bash-4.4#

Could you please suggest what could be the cause for this issue.
Please provide pointers on how to proceed.

Thanks,
Rajesh Dasari.