resize2fs: Bad magic number in super-block while t

Posted 2020-10-21

resize2fs: Bad magic number in super-block while trying to open /dev/mapper/cl-root

[[email protected] ~]# df -Th

Filesystem          Type      Size  Used      Avail   Use%   Mounted on

/dev/mapper/cl-root      xfs     18G     18G    897M    96%    /

devtmpfs            devtmpfs  901M     0      901M   0%     /dev

tmpfs              tmpfs     912M     0     912M   0%     /dev/shm

tmpfs              tmpfs     912M    608K    912M   1%    /run

tmpfs              tmpfs     912M     0     912M   0%     /sys/fs/cgroup

/dev/sda1           xfs      1014M    186M    829M  19%     /boot

tmpfs              tmpfs     183M     0     183M   0%     /run/user/0

[[email protected] ~]# vgdisplay

  --- Volume group ---

  VG Name               cl

  System ID             

  Format                lvm2

  Metadata Areas        1

  Metadata Sequence No  3

  VG Access             read/write

  VG Status             resizable

  MAX LV                0

  Cur LV                2

  Open LV               2

  Max PV                0

  Cur PV                1

  Act PV                1

  VG Size               <19.00 GiB

  PE Size               4.00 MiB

  Total PE              4863

  Alloc PE / Size       4862 / 18.99 GiB

  Free  PE / Size       1 / 4.00 MiB

  VG UUID               0g6KUL-2kdC-e4Ml-EMFH-2JYs-SNUT-bn09Od

   

[[email protected] ~]# pvcreate /dev/sdc

  Physical volume "/dev/sdc" successfully created.

[[email protected] ~]# vgextend c1 /dev/sdc

  Volume group "c1" not found

  Cannot process volume group c1

[[email protected] ~]# vgscan

  Reading volume groups from cache.

  Found volume group "cl" using metadata type lvm2

[[email protected] ~]# vgextend lvm2 /dev/sdc

  Volume group "lvm2" not found

  Cannot process volume group lvm2

[[email protected] ~]# pscan

-bash: pscan: command not found

[[email protected] ~]# pvscan

  PV /dev/sda2   VG cl              lvm2 [<19.00 GiB / 4.00 MiB free]

  PV /dev/sdc                       lvm2 [20.00 GiB]

  Total: 2 [<39.00 GiB] / in use: 1 [<19.00 GiB] / in no VG: 1 [20.00 GiB]

[[email protected] ~]# pvscan

  PV /dev/sda2   VG cl              lvm2 [<19.00 GiB / 4.00 MiB free]

  PV /dev/sdc                       lvm2 [20.00 GiB]

  Total: 2 [<39.00 GiB] / in use: 1 [<19.00 GiB] / in no VG: 1 [20.00 GiB]

[[email protected] ~]# vgextend cl /dev/sdc

  Volume group "cl" successfully extended

[[email protected] ~]# vgdisplay

  --- Volume group ---

  VG Name               cl

  System ID             

  Format                lvm2

  Metadata Areas        2

  Metadata Sequence No  4

  VG Access             read/write

  VG Status             resizable

  MAX LV                0

  Cur LV                2

  Open LV               2

  Max PV                0

  Cur PV                2

  Act PV                2

  VG Size               38.99 GiB

  PE Size               4.00 MiB

  Total PE              9982

  Alloc PE / Size       4862 / 18.99 GiB

  Free  PE / Size       5120 / 20.00 GiB

  VG UUID               0g6KUL-2kdC-e4Ml-EMFH-2JYs-SNUT-bn09Od

[[email protected] ~]# resize2fs /dev/mapper/cl-root

resize2fs 1.42.9 (28-Dec-2013)

resize2fs: Bad magic number in super-block while trying to open /dev/mapper/cl-root

Couldn't find valid filesystem superblock.