On Tue, 20 Apr 2021, Michael Hennebry wrote:
I've been trying to backup the root partition of my F33 installation.
To that end, I'm running a C7 live CD.
C7 won't mount the partition.
tune2fs likes it, but
[root@localhost mnt]# mount /dev/sda5 /mnt/a5
mount: wrong fs type, bad option, bad superblock on /dev/sda5,
missing codepage or helper program, or other error
In some cases useful info is found in syslog - try
dmesg | tail or so.
[root@localhost mnt]# dmesg | tail -n 15
[ 146.548540] Bluetooth: BNEP socket layer initialized
[ 300.961319] JBD2: Unrecognised features on journal
[ 300.961325] EXT4-fs (sda5): error loading journal ====== WHY?
[ 361.930877] e1000e: enp0s25 NIC Link is Up 1000 Mbps Full Duplex, Flow
I just ran fsck -n /dev/sda5 .
[root@localhost mnt]# fsck -n /dev/sda5
fsck from util-linux 2.23.2
e2fsck 1.42.9 (28-Dec-2013)
Journal superblock has an unknown incompatible feature flag set.
Abort? no
Journal superblock is corrupt.
Fix? no
fsck.ext4: The ext2 superblock is corrupt while checking ext3 journal for slash
slash: ********** WARNING: Filesystem still has errors **********
[root@localhost mnt]#
What is going on?
What can I do about it?
Does "unknown incompatible feature flag set" imply corrupt?
How dangerous would it be to let fsck fix it?
I'm starting to think I might need to back up / while it is in use.
--
Michael hennebry@xxxxxxxxxxxxxxxxxxxxx
"Sorry but your password must contain an uppercase letter, a number,
a haiku, a gang sign, a heiroglyph, and the blood of a virgin."
-- someeecards
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