LincolnBlogs

I have this ISCSI volume mounted on a RHEL 5 system that is running out of space. How do you grow your mounted iscsi volume? Good question!

* Unmount the volume. In this case it was /dev/sdb1 for me.
umount /dev/sdb1

* Grow the volume size on your san/nas (however your san/nas does this).
In my case - "Hey SanAdmin, can you add another 100gb of space to $volume?"

* In order to resize, your server needs to see that there is more volume space available, so you need to “service iscsi restart”.
[root@nile ~]# service iscsi restart
Logging out of session [sid: 1, target: iqn.2001-05.com.equallogic:0-8a0906-4cb5c3602-e9b001184684cc04-nile-splunk-index-archive, portal: nnn.nnn.nnn.nnn,3260]
Logout of [sid: 1, target: iqn.2001-05.com.equallogic:0-8a0906-4cb5c3602-e9b001184684cc04-nile-splunk-index-archive, portal: nnn.nnn.nnn.nnn,3260]: successful
Stopping iSCSI daemon:
iscsid dead but pid file exists [ OK ]
Starting iSCSI daemon: [ OK ]
[ OK ]
Setting up iSCSI targets: Logging in to [iface: default, target: iqn.2001-05.com.equallogic:0-8a0906-4cb5c3602-e9b001184684cc04-nile-splunk-index-archive, portal: nnn.nnn.nnn.nnn,3260]
Login to [iface: default, target: iqn.2001-05.com.equallogic:0-8a0906-4cb5c3602-e9b001184684cc04-nile-splunk-index-archive, portal: nnn.nnn.nnn.nnn,3260]: successful
[ OK ]


* fdisk /dev/sdb and delete the old partition (yes, delete it).
fdisk /dev/sdb
Command (m for help): d
Selected partition 1

* Create a new bigger partition over top / in place of the original.
Command (m for help): n
Command action
e extended
p primary partition (1-4)
p
Partition number (1-4): 1
First cylinder (1-26109, default 1):
Using default value 1
Last cylinder or +size or +sizeM or +sizeK (1-26109, default 26109):
Using default value 26109

* Run e2fsck on the partition.
e2fsck -f /dev/sdb1


* Resize it.
resize2fs /dev/sdb1


* Finally, mount it back up!
mount -a (yes mine was listed in fstab)