== LVM Resize ==

(20210423: Artemis storage was full)

* Artemis (ssh root@artemis) is in virtual. Stop the following jobs before umounting the fs

{{{
root@artemis:~# /etc/init.d/tomcat8 status (start/stop)
root@artemis:~# /etc/init.d/postgresql status (start/stop)
}}}

1. extend volume
2. resize filesystem

{{{
root@artemis:~# lvs  # logical volume
root@artemis:~# vgs  # volume group: says that we have x TB free space. Allocate to an lv by lvextend
root@artemis:~# pvs  # physical volume
root@artemis:~# lvextend -L +100G /dev/RAID1_ISLANDS/artemis_data
root@artemis:~# fdisk -l /dev/RAID1_ISLANDS/artemis_data
root@artemis:~# cat /etc/fstab
root@artemis:~# mount /store/artemis_data/ 
root@artemis:~# df -h /store/artemis_data/
root@artemis:~# umount /store/artemis_data 
root@artemis:~# resize2fs /dev/mapper/RAID1_ISLANDS-artemis_data
root@artemis:~# e2fsck -f /dev/mapper/RAID1_ISLANDS-artemis_data # checks for errors
root@artemis:~# resize2fs /dev/mapper/RAID1_ISLANDS-artemis_data
root@artemis:~# mount /store/artemis_data/
}}}

More info [https://www.tecmint.com/extend-and-reduce-lvms-in-linux/ here]