Michael Hennebry
2021-Apr-21 01:07 UTC
[CentOS] C7 live CD does not like F33 ext partition
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 at 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 at localhost mnt]# dmesg | tail -n 15
[ 123.848185] SELinux: initialized (dev fuse, type fuse), uses genfs_contexts
[ 123.856904] SELinux: initialized (dev fusectl, type fusectl), uses
genfs_contexts
[ 146.541654] Bluetooth: Core ver 2.16
[ 146.541737] NET: Registered protocol family 31
[ 146.541739] Bluetooth: HCI device and connection manager initialized
[ 146.541750] Bluetooth: HCI socket layer initialized
[ 146.541753] Bluetooth: L2CAP socket layer initialized
[ 146.541760] Bluetooth: SCO socket layer initialized
[ 146.548524] Bluetooth: BNEP (Ethernet Emulation) ver 1.3
[ 146.548529] Bluetooth: BNEP filters: protocol multicast
[ 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
Control: Rx/Tx
[ 361.931025] IPv6: ADDRCONF(NETDEV_CHANGE): enp0s25: link becomes ready
[root at localhost mnt]# mount -t ext2 /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.
No idea why the journal should be a problem.
I used gnome to do the reboot.
I can boot back into F33.
How do I figure out what is going on?
What can I do about it?
--
Michael hennebry at web.cs.ndsu.NoDak.edu
"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
Michael Hennebry
2021-Apr-21 01:19 UTC
[CentOS] C7 live CD does not like F33 ext partition
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 at 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 at 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, FlowI just ran fsck -n /dev/sda5 . [root at 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 at 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 at web.cs.ndsu.NoDak.edu "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