After a crash I checked my root partition using xfs_repair.
I was shocked, when xfs_repair did not find a superblock and no copy at all on the whole filesystem…
Though, I can still read only mount it and see the data.
Is there any way to recover or reconstruct a superblock? Well, xfs_repair did not find a second copy of it…
Thanks
You are sure that your root file system is of type XFS?
No comment:
# LANG=C xfs_info /dev/sda
xfs_info: /dev/sda is not a mounted XFS filesystem
#
What about /dev/sda1 or /dev/sda2?
Try ‘fdisk -l /dev/sda’
Actually “parted --list” is better, it indicates which file system is on each partition. For example on this system, /dev/sdb2 and /dev/sdc3 are XFS partitions; /dev/sda1 is the ext4 boot and root partition:
# xfs_info /dev/sdb2
meta-data=/dev/sdb2 isize=256 agcount=4, agsize=59736832 blks
= sectsz=512 attr=2, projid32bit=0
= crc=0 finobt=0 spinodes=0
data = bsize=4096 blocks=238947328, imaxpct=25
= sunit=0 swidth=0 blks
naming =version 2 bsize=4096 ascii-ci=0 ftype=0
log =internal bsize=4096 blocks=116673, version=2
= sectsz=512 sunit=0 blks, lazy-count=1
realtime =none extsz=4096 blocks=0, rtextents=0
#
# xfs_info /dev/sdc3
meta-data=/dev/sdc3 isize=512 agcount=4, agsize=23970112 blks
= sectsz=512 attr=2, projid32bit=1
= crc=1 finobt=0 spinodes=0
data = bsize=4096 blocks=95880448, imaxpct=25
= sunit=0 swidth=0 blks
naming =version 2 bsize=4096 ascii-ci=0 ftype=1
log =internal bsize=4096 blocks=46816, version=2
= sectsz=512 sunit=0 blks, lazy-count=1
realtime =none extsz=4096 blocks=0, rtextents=0
#
# xfs_info /dev/sda1
xfs_info: /dev/sda1 is not a mounted XFS filesystem
#