xfs_fsr
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XF4.7#22 of 22
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Ranked in Disk Defragmentation Software ·Free plan
About
xfs_fsr is ranked #22 of 22 in disk defragmentation software on Inferse. It runs on Linux. There is a free plan.
Compared on disk defragmentation software
- Free plan
- Yesxfs.org
Facts
- Purpose
- xfs_fsr reorganizes mounted XFS filesystems by improving the layout of file extents one file at a time.man7.org · 4 Oct 2026
- Selection
- With no arguments, it selects files with the largest numbers of extents and attempts to defragment the top 10% on each pass.man7.org · 4 Oct 2026
- Time limit
- The default run lasts up to two hours and records where it stopped so it can resume later.man7.org · 4 Oct 2026
- Targeting
- It can be run on named filesystems or individual files, making one pass through each specified target.man7.org · 4 Oct 2026
- How it works
- It copies a file to a temporary location and atomically interchanges the data extents of the original and temporary files.man7.org · 4 Oct 2026
- Disk space requirement
- Reorganization requires enough free disk space to copy the target file, with space less fragmented than the original file.man7.org · 4 Oct 2026
- Quota requirement
- On systems using quotas, the file owner must have enough remaining file space quota for the copy.man7.org · 4 Oct 2026
- Mapped files
- It does not operate on files that are currently mapped in memory.man7.org · 4 Oct 2026
- No-defrag flag
- Files marked no-defrag are skipped, and the flag can be set or cleared with xfs_io's chattr command.man7.org · 4 Oct 2026
- Access requirement
- The filesystem must be mounted read-write; entries without the rw option are skipped.man7.org · 4 Oct 2026
- Operational caution
- The manual says system partitions generally do not need xfs_fsr and cautions that moving bootloader files can make a system unbootable unless lilo is rerun before reboot.man7.org · 4 Oct 2026
- Project and support
- The manual identifies xfs_fsr as part of the xfsprogs project and directs bug reports to the linux-xfs mailing list.man7.org · 4 Oct 2026
Best xfs_fsr alternatives
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Where it ranks on Inferse
Sources
- man7.org/linux/man-pages/man8/xfs_fsr.8.html· checked 4 Oct 2026