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I am trying to transform /dev/mapper/VolGroup-lv_root from xfs to ext4 using fstransform on my CentOS 7 VM. This is needed for a migration from another Centos 7 VM. The issue I am facing is the root filesystem type does not match between the VMs. mount shows /dev/mapper/VolGroup-lv_root as the mounted root directory: /dev/mapper/VolGroup-lv_root on / type xfs (rw,relatime,attr2,inode64,noquota)

The transformation fails with fsmove: ERROR: failed to remove source directory '//boot': Device or resource busy.

Some other maybe helpful info:

ls -l /dev/mapper/VolGroup-lv_root
rwxrwxrwx 1 root root 7 Aug 30 14:19 /dev/mapper/VolGroup-lv_root -> ../dm-0
ls -l /dev/dm-0
brw-rw---- 1 root disk 253, 0 Aug 30 14:19 /dev/dm-0
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  • 1
    Boot from live CD and do the operation.
    – Romeo Ninov
    Commented Aug 30, 2023 at 15:01
  • please use proper syntax to format code and output
    – mattia.b89
    Commented Aug 31, 2023 at 16:33

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