Linux Filesystem Commands
EXT4 mkfs.ext4 [-L LABEL -U UUID] /dev/XXX # format partition with ext4 tune2fs -l /dev/XXX # get information about partition e2fsck /dev/XXX # check fs and repair it resize2fs /dev/XXX [size] # grow ext4 fs # shrink ext fs (should be unmounted) e2fsck -f /dev/XXX resize2fs /dev/XXX size # shrink to minimum size e2fsck -f /dev/XXX resize2fs -M /dev/XXX size e4defrag -v /dev/XXX # Defragment tune2fs -L NEWLABEL /dev/XXX # Change ext4 label tune2fs -U UUID /dev/XXX # Change UUID (should be unmounted) tune2fs -m PERCENTAGE /dev/XXX # Resize reserved area BTRFS mkfs.btrfs /dev/XXX # Format partition btrfs filesystem show /dev/XXX # show information about volumes btrfs filesystem df /point/de/montage # show disk usage info btrfs filesystem usage /point/de/montage # detailed disk usage info btrfs check --repair /dev/XXX # Check and repair (should be unmounted) btrfs scrub start /dev/XXX # Start a scrub (mounted) btrfs scrub status /dev/XXX # Check scrub status # Rezise btrfs volume (+- to increase/decrease) btrfs filesystem resize [+-]TAILLE /point/de/montage btrfs filesystem resize max /point/de/montage # Defragment partition (with compression) btrfs filesystem defragment -rv MOUNTPOINT btrfs filesystem defragment -rv -clzo MOUNTPOINT # Change label btrfs filesystem label MOUNTPOINT LABEL btrfs filesystem label /dev/XXX LABEL # Change UUID btrfstune -U UUU-UUUU-UUUU.... /dev/XXX XFS mkfs.xfs /dev/XXX # Format partition xfs_info /dev/XXX # Information about partition xfs_repair /dev/XXX # Repair partition (unmounted) xfs_growfs -D TAILLE /dev/XXX # Grow fs (unmounted) xfs_fsr -v /dev/XXX # Defragment fs xfs_admin -L NEWLABEL /dev/XXX # Change Label xfs_admin -U UUU-UUUU-UUUU.... /dev/XXX # Change UUID (unmounted) LVM # Physical Volumes ## Display information pvdisplay -v pvs -v pvs -a ## Operations pvcreate /dev/sdb1 # Create PV pvremove /dev/sdb1 # Remove PV pvmove -v /dev/sdb2 /dev/sdb3 # Move PV # Volume Groups ## Display information vgdisplay -v vgs -v vgs -a -o +devices ## Operations vgcreate VolData00 /dev/sdb1 /dev/sdb2 /dev/sdb3 ## Create VG vgcreate VolData00 /dev/sdb[123] ## Create VG shorthand vgextend VolData00 /dev/sdb3 # Extend vgreduce VolData00 /dev/sdb3 # Reduce vgremove VolData00 # Remove vgrename VolData00 Data_Vol_01 # Rename # Logical Volumes ## Display information lvdisplay -v lvs -v lvs -a -o +devices ## Operations lvcreate -L ${SIZE_IN_GC}G $VG_NAME # Create LV lvcreate -l 100%FREE $VG_NAME # Create LV from remaining free sudo lvextend -L +${GB_TO_ADD}G -n /dev/$VG_NAME/$LV_NAME # Extend in GB sudo lvextend -l 100%FREE /dev/$VG_NAME/$LV_NAME # Extend by percentage of free sudo lvextend -L ${SIZE}G -n /dev/$VG_NAME/$LV_NAME # Resize to exact size Other Disk and FS Operations lsblk -O # List disks and partitions blkid # Information about a disk or partition file -s /dev/XXX # Info about files # Bad blocks detection and repair badblocks ddrescue