Robert G. (Doc) Savage
2020-Dec-07 01:20 UTC
[CentOS] /dev/mapper/cl-root filesystem corrupted?
A client's (truly ancient) file server running CentOS 7 suddenly started misbehaving, and I believe the ext4 filesystem on /dev/mapper/cl-root may be corrupted. A reboot fails with a file system check and drops me into maintenance mode. I tried booting from a live C7 DVD and as root running e2fsck. It complains that the superblock could not be read and suggests running "e2fsck -b 8193 <device>". That also fails. Is there a way to more forcefully "encourage" e2fsck to do its job without totally destroying that filesystem? --Doc Savage ? ? Fairview Heights, IL
On 7/12/20 12:20 pm, Robert G. (Doc) Savage via CentOS wrote:> A client's (truly ancient) file server running CentOS 7 suddenly > started misbehaving, and I believe the ext4 filesystem on > /dev/mapper/cl-root may be corrupted. A reboot fails with a file system > check and drops me into maintenance mode. I tried booting from a live > C7 DVD and as root running e2fsck. It complains that the superblock > could not be read and suggests running "e2fsck -b 8193 <device>". That > also fails. > > Is there a way to more forcefully "encourage" e2fsck to do its job > without totally destroying that filesystem? > > --Doc Savage > ? ? Fairview Heights, IL > _______________________________________________ > CentOS mailing list > CentOS at centos.org > https://lists.centos.org/mailman/listinfo/centos >I'd say first make sure the hardware is in good order.? If you have a faulty motherboard, CPU, and/or RAM, you might not be able to do anything and could end up losing precious data if you manage to forcefully "encourage" it.