Resize2fs

resize2fs ext2/ext3/ext4 file system resizer

• https://linux.die.net/man/8/resize2fs

resize2fs /dev/nvme1n1
resize2fs 1.42.9 (28-Dec-2013)
Filesystem at /dev/nvme1n1 is mounted on /mount/path; on-line resizing required
old_desc_blocks = 63, new_desc_blocks = 94
The filesystem on /dev/nvme1n1 is now 196608000 blocks long.

resize2fs /dev/mapper/VolGroup-lv_root

resize2fs /dev/mapper/ubuntu--vg-ubuntu--lv
resize2fs 1.45.6 (20-Mar-2020)
The filesystem is already 16646144 (4k) blocks long.  Nothing to do!

resize2fs /dev/root
The filesystem is already 2068731 (4k) blocks long.  Nothing to do!

Review: growpart

resize2fs /dev/mapper/ubuntu--vg-ubuntu--lv
resize2fs 1.45.6 (20-Mar-2020)
Filesystem at /dev/mapper/ubuntu--vg-ubuntu--lv is mounted on /; on-line resizing required
old_desc_blocks = 8, new_desc_blocks = 16
The filesystem on /dev/mapper/ubuntu--vg-ubuntu--lv is now 33291264 (4k) blocks long.

resize2fs /path/todir
resize2fs 1.42.9 (28-Dec-2013)
open: Is a directory while opening /path/todir

resize2fs /dev/root
resize2fs 1.46.5 (30-Dec-2021)
Filesystem at /dev/root is mounted on /; on-line resizing required
old_desc_blocks = 1, new_desc_blocks = 8
The filesystem on /dev/root is now 16748795 (4k) blocks long.

Activities

1. Extend LVM on qcow2 images

Related commands

• lvresize
• lvreduce
• chfs (AIX)
• fdisk or parted
• growpart
• xfs_growfs

See also

• ext4 e2fsck, fsck.ext4, superblock, inode, block size, mkfs.ext4 tune2fs, wipefs, resize2fs stat, extents, Review ext4 journalctl logs. Read-only file system, virt-resize, ACL
• LVM: LVM errors LVM scan commands lkvmetad, Add a new disk

scan: pvscan vgscan

LVM: lvs lvmscan lvm fullreport lvmreport lvmconfig lvmdump lvmcheck lvm dumpconfig

Scan: pvs vgs lvs pvscan vgscan

PV: pvcreate pvremove pvscan pvremove pvscan pvs pvchange pvck pvdisplay pvresize

LV: lvdisplay lvcreate lvremove, lvresize, lvextend, lvreduce, lvrename

VG: vgdisplay,vgcreate,vgremove, vgextend, vgreduce, vgscan, vgchange, vgrename, vgcfgbackup, vgcfgrestore, vgimportclone, vgck

Check commands: pvck vgck

• File systems: ext4, XFS, ZFS, btrfs, wipefs, findfs, HDFS, overlay, aufs, virt-filesystems, Windows: (FAT, NTFS, ReFS), GPFS, squashfs, Ecryptfs, Encfs, FUSE, VMFS, Comparison of distributed file systems, Userspace filesystem, Resize filesystem size