How to run FSCK to /dev/sda3

[jingjong]

Hi,

I am currently working on a test server trying to recreate a manual FSCK to SDA3

Tried e2fsck to /dev/sda3 but I am getting this

# e2fsck /dev/sda3
e2fsck 1.42.12 (29-Aug-2014)
/dev/sda3 is in use.
e2fsck: Cannot continue, aborting.

Tried these to articles

But nothing works

1. https://www.cyberciti.biz/tips/surviving-a-linux-filesystem-failures.html
2. https://www.cyberciti.biz/faq/can-i-run-fsck-or-e2fsck-when-linux-file-system-is-mounted/

when in single user mode and doing the unmounting I got

# umount /dev/sda3
umount: /dev/sda3: not mounted

 

[Richard]

I am currently working on a test server trying to recreate a manual FSCK to SDA3

Tried e2fsck to /dev/sda3 but I am getting this

# e2fsck /dev/sda3
e2fsck 1.42.12 (29-Aug-2014)
/dev/sda3 is in use.
e2fsck: Cannot continue, aborting.

Tried these to articles

But nothing works

1. https://www.cyberciti.biz/tips/surviving-a-linux-filesystem-failures.html
2. https://www.cyberciti.biz/faq/can-i-run-fsck-or-e2fsck-when-linux-file-system-is-mounted/

when in single user mode and doing the unmounting I got

# umount /dev/sda3
umount: /dev/sda3: not mounted

The parameter of "umount" has to be the mount point where it's currently mounted. To figure it out run

df -h

 

[jingjong]

The parameter of "umount" has to be the mount point where it's currently mounted. To figure it out run

# df -h
Filesystem Size Used Avail Use% Mounted on
udev 10M 0 10M 0% /dev
tmpfs 6.3G 9.0M 6.3G 1% /run
/dev/dm-0 95G 9.3G 81G 11% /
tmpfs 16G 25M 16G 1% /dev/shm
tmpfs 5.0M 0 5.0M 0% /run/lock
tmpfs 16G 0 16G 0% /sys/fs/cgroup
/dev/fuse 30M 20K 30M 1% /etc/pve

Nothing about /dev/sda3

# fdisk -l /dev/sda

Disk /dev/sda: 894.3 GiB, 960197124096 bytes, 1875385008 sectors
Units: sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disklabel type: gpt
Disk identifier: AA0066F5-EA50-4BD7-A8CE-344F493427A0

Device Start End Sectors Size Type
/dev/sda1 2048 4095 2048 1M BIOS boot
/dev/sda2 4096 528383 524288 256M EFI System
/dev/sda3 528384 937703054 937174671 446.9G Linux LVM

 

[Alwin]

'/dev/sda3' is a physical volume of a volume group. Check with 'vgdisplay' a VG should appear (probably pve). You can activate that VG with 'vgchange -a y <VGname>', then those devices get mapped. The fsck then can run on these mapped devices (eg. /dev/mapper/pve).