Leo's Notes
XFS is a high performance filesystem.
Cheatsheet[edit | edit source]
| Description | Command | Example |
|---|---|---|
| Create a XFS filesystem | mkfs.xfs $device
|
mkfs.xfs /dev/sda1
|
| Check XFS filesystem | xfs_check $device
|
xfs_check /
|
| Defragment a XFS filesystem | xfs_fsr
|
xfs_fsr /
|
| Resize a XFS filesystem | xfs_growfs $mount
|
xfs_growfs /
|
| Creates a XFS filesystem dump into a file | xfsdump
|
xfsdump -l 0 -f /backup-home.data /dev/mapper/vg_lv
|
| Restore a XFS filesystem from a dump | xfsrestore
|
xfsrestore -f /backup-home.data /dev/mapper/vg_lv
|
Tasks[edit | edit source]
Growing a filesystem[edit | edit source]
Use xfs_growfs to expand a XFS filesystem to its maximum size of its underlying partition or device. This can be done while the filesystem is online.
# resize2fs /dev/mapper/cl_hpcmonitor-metrics
resize2fs 1.45.4 (23-Sep-2019)
Filesystem at /dev/mapper/cl_hpcmonitor-metrics is mounted on /var/metrics; on-line resizing required
old_desc_blocks = 83, new_desc_blocks = 89
The filesystem on /dev/mapper/cl_hpcmonitor-metrics is now 186122240 (4k) blocks long.
Shrinking a filesystem[edit | edit source]
You can't. You need to destroy and recreate the filesystem. You can use xfsdump and xfsrestore to help with this.