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userDepth
Asked: 2016-05-23 12:13:40 +0800 CST

What's the command to defrag XFS?

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I have a /home partition in a separate disk with XFS, how do I de-fragment it ? (on-line or off-line)

I haven't tried anything yet and the / partition has BTRFS. Also how to schedule it would be nice. But I can check that out in already responded questions.

This was the output :

sudo xfs_db -c frag -r /dev/sdb5
actual 329394, ideal 301436, fragmentation factor 8.49%
command-line

1 Answers

  1. Best Answer

    XFS provides a filesystem defragmentation utility, xfs_fsr that can defragment the files on a mounted and active XFS filesystem.

    It can be useful to view XFS fragmentation periodically.

    xfs_fsr improves the organization of mounted filesystems. The reorganization algorithm operates on one file at a time, compacting or otherwise improving the layout of the file extents. Inspect fragmentation levels

    To see how much fragmentation your file system currently has:

    sudo xfs_db -c frag -r /dev/sd??

    To begin defragmentation, use the xfs_fsr command which is included with the xfsprogs package.

    sudo xfs_fsr /dev/sd??

    Change ?? to what corresponds your partition

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