LVM Resize a Filesystem

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AIX

Extend a Filesystem

# chfs -a size=+<additional size>M <absolute path to filesystem>

Reduce a Filesystem

# chfs -a size=-<reduced size>M <absolute path to filesystem>

Linux

Extend an ext4 Filesystem

  1. Increase the size of the logical volume
    # lvextend -L +<size>[M | G] /dev/<volume_group>/<logical_volume>
  2. Resize the underlying filesystem
    # resize2fs /dev/<volume_group>/<logical_volume>

Extend an xfs Filesystem

  1. Increase the size of the logical volume
    # lvextend -L +<size>[M | G] /dev/<volume_group>/<logical_volume>
  2. Resize the underlying filesystem
    # xfs_growfs -d </path/to/filesystem>

Reduce an ext4 Filesystem

  1. Note: You may have to change to runlevel 1 in order to unmount
  2. Backup your data!
  3. Dismount the filesystem before reducing the size
    # umount /dev/<volume_group>/<logical_volume>
  4. Force check the filesystem to ensure it is clean. DO NOT RUN e2fsck IF THE FILESYSTEM IS MOUNTED
    # e2fsck –f /dev/<volume_group>/<logical_volume>
  5. Reduce the filesystem
    # resize2fs /dev/<volume_group>/<logical_volume> -<size>[M | G]
  6. Reduce the logical volume
    # lvreduce –L -<size>[M | G] /dev/<volume_group>/<logical_volume>
  7. Re-check the filesystem to ensure it is clean
    # e2fsck –f /dev/<volume_group>/<logical_volume>
  8. Mount the filesystem
    # mount /dev/<volume_group>/<logical_volume>

Further Reading

  1. IBM pSeries and AIX Information Center