resize partition snippets

Resize an LVM volume

Tagged osion koon muokkaaminen, resize partition, resize lvm, justering av partitionsstorlek  Languages bash

Step by step instructions on how an incorrectly configured /home was resized to 5Gb on one of our servers.

umount /home
e2fsck -f /dev/mapper/aktagon--1-home
resize2fs /dev/mapper/aktagon--1-home 5G
lvreduce -L 5G aktagon-1/home
mount /home

First /home was unmounted as a precaution. Then the filesystem was fsck'ed. After that the file system was resized to 5Gb and finally the underlying LVM logical volume was resized.

Resizing LVM partition that is on a crypted device.

Tagged encrypted device, lvm, resize partition  Languages bash

I installed sysrescd on an USB stick to resize a partition that had too little space on it. The hitch was that it was on an encrypted partition. This is the correct order of the commands that needed to be issued.

sda3 is the encrypted device systemvg is the name of the volume group lv_usr is the name of the logical volume

cryptsetup luksOpen /dev/sda3 crypt
vgcreate systemvg /dev/mapper/crypt
lvm vgchange --ignorelockingfailure -P -a y
lvextend -L+2G /dev/systemvg/lv_usr
e2fsck -f /dev/systemvg/lv_usr
resize2fs /dev/systemvg/lv_usr