Some time ago I had a problem with the i_blocks field of a few inodes
being corrupted (replaced by extremely large numbers).
It now happened again, and the strange thing is that one of the two
files affected was also affected the earlier time (or more precisely,
the file that now has the same name as the old one had). That file was
/etc/postfix/master.cf - a simple text configuration file that is
modified only manually using emacs.
I wrote about it here when it first happened - that thread began with:
Message-ID: <bf46ee0b-8af1-43ce-a48f-e304ef850...@dybdal.dk>
Date: Tue, 19 Mar 2024 15:43:30 +0100
Subject: Filsystemkorruption i ext4?
I don't believe that it is a disk error - the file system is on a RAID1
partition and the RAID consistency is checked regularly.
I also find it hard to believe that it is a RAM error - the mashine has
run memtest86+ overnight without finding anything.
There was a power outage some time ago, but surely ext4 should be able
to handle that without introducing errors.
Fsck fixes it.
The system is an up-to-date Bookworm.
Any ideas as to how this can happen - twice, and effecting (among
others) the same file?
---------------- fsck log:
Log of fsck -C -a -T -t ext4 /dev/md0
Sun Sep 22 20:20:13 2024
root has been mounted 13 times without being checked, check forced.
root: Inode 10748715, i_blocks is 281474976710631, should be 5. FIXED.
root: Inode 10751288, i_blocks is 281474976710647, should be 3. FIXED.
root: 223986/32759808 files (6.5% non-contiguous), 6827061/131038976 blocks
fsck exited with status code 1
---------------- stat(1) for the two files before fsck:
File: main.cf
Size: 16959 Blocks: 2251799813685048 IO Block: 4096 regular file
Device: 9,0 Inode: 10748715 Links: 1
Access: (0644/-rw-r--r--) Uid: ( 0/ root) Gid: ( 0/ root)
Access: 2024-09-22 20:31:58.081768853 +0200
Modify: 2024-08-03 19:33:20.665350446 +0200
Change: 2024-09-22 22:09:54.053359071 +0200
Birth: 2024-08-03 11:20:14.671832520 +0200
File: master.cf
Size: 10782 Blocks: 2251799813685176 IO Block: 4096 regular file
Device: 9,0 Inode: 10751288 Links: 1
Access: (0644/-rw-r--r--) Uid: ( 0/ root) Gid: ( 0/ root)
Access: 2024-09-22 19:20:07.216191493 +0200
Modify: 2024-06-05 14:37:24.205001097 +0200
Change: 2024-09-22 22:09:54.053359071 +0200
Birth: 2024-03-19 13:36:38.971618859 +0100
----------------
Thanks,
Jesper
--
Jesper Dybdal
https://www.dybdal.dk
