FSFREEZE(8) System Administration FSFREEZE(8) (NAME) fsfreeze - (Ext3/4, ReiserFS, JFS, XFS) (SYNOPSIS) fsfreeze --freeze|--unfreeze mountpoint (DESCRIPTION) fsfreeze . fsfreeze . fsfreeze RAID (snapshot) . fsfreeze device-mapper . ( LVM) . dmsetup(8) . mountpoint . ( mount(8) ). atime ( strictatime mount(8) ). (OPTIONS) -f, --freeze . write(2) (dirty data) (log) . (block) . (unlinking) . . -u, --unfreeze . . -h, --help . -V, --version . (FILESYSTEM SUPPORT) . ( 2016-12-18) btrfs ext2/3/4 f2fs jfs nilfs2 reiserfs xfs . . (loopback mount) . (NOTES) xfs_freeze(8) . (AUTHORS) Hajime Taira. (SEE ALSO) mount(8) (REPORTING BUGS) . (AVAILABILITY) fsfreeze util-linux . . util-linux 2.41.5 2026-03-31 FSFREEZE(8)