fsadm

Check a filesystem for errors

$ fsadm check [/dev/vg_name/lv_name]

$ fsadm [[-n|--dry-run]] resize [/dev/vg_name/lv_name] [10G]

$ fsadm resize [/dev/vg_name/lv_name]

$ fsadm [[-l|--lvresize]] resize [/dev/vg_name/lv_name] [100G]

$ fsadm [[-e|--ext-offline]] resize [/dev/vg_name/lv_name] [20G]

fsadm [-C|--nocache] [-h|--help] [-t FSTYPE|--type FSTYPE] [-V|--version] [-v|--verbose] <command> [<args>]

-C, --nocache
    Skip reading LVM tables from cache (subcommand-dependent)

-h, --help
    Display help text and exit

-t FSTYPE, --type FSTYPE
    Specify filesystem type (e.g., ext4, xfs); overrides auto-detection

-V, --version
    Output version information and exit

-v, --verbose
    Enable verbose output (subcommand-dependent)

fsadm is a versatile command-line tool for administering Linux filesystems, particularly those on LVM (Logical Volume Manager) logical volumes. It offers a unified interface for common tasks like resizing filesystems, checking integrity, syncing volumes, and mounting/unmounting.

Supporting filesystems such as ext2/3/4, XFS, GFS2, and OCFS2, fsadm automatically detects the type or allows manual specification via -t. It's invaluable for online operations on mounted filesystems where supported, reducing the need for multiple specialized tools (e.g., resize2fs, xfs_growfs, lvextend).

For example, fsadm resize extends both the LV and filesystem atomically. It requires root privileges and is part of the lvm2 package, making it essential in enterprise storage environments for safe, efficient management without downtime.

Requires root privileges. Resizing operations risk data loss if insufficient space or unsupported FS; always backup first. Online resize limited to specific filesystems (e.g., no shrink for XFS).

resize <device> [<size>]: Resize LV and FS.
fsck <device>: Check/repair FS.
lvresize, lvsync, mount, umount: LV/FS-specific actions.

fsadm resize /dev/myvg/homevol 50G
Extends LV and FS to 50GB (mounted OK for ext4/XFS).

Introduced in LVM2 (circa 2004) by the LVM development team (Red Hat/Sistina). Evolved to support more filesystems and online operations; current in modern distros like RHEL, Ubuntu.

lvm(8), lvresize(8), resize2fs(8), xfs_growfs(8), fsck(8)