lvm vgscan
lvm lvscan
lvm vgchange -ay
lvm pvscan
lvm lvscan
e2fsck -v -y /dev/mapper/whatever
dumpe2fs /dev/sda2 | grep superblock
fsck -b 32768 /dev/sda2
You can also use superblock
stored at 32768 to mount partition, enter:
# mount sb={alternative-superblock} /dev/device /mnt
# mount sb=32768 /dev/sda2 /mnt
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