Below are examples of expanding an ISCSI Linux device partition.   In this example /dev/vg01/lvol01 is the LVM volume and /mnt/iscsi is the mount point.  The device partition is /dev/sdb

*It is recommended that you back up your data before making changes to a device or file system. 

If using LVM:

[root@hostname ~]# umount /mnt/iscsi

# Use fsdisk to delete and recreate partition

[root@hostname ~]# fdisk /dev/sdb  # (d, p, 1, default, default, t, 8e, p, w)

[root@hostname ~]# pvscan

[root@hostname ~]# pvresize /dev/sdb1

# (use vgdisplay to get the amount of free space in volume group)

[root@hostname ~]# lvextend [-l|-L] +[extents|size] /dev/vg01/lvol01  

[root@hostname ~]# e2fsck -f /dev/vg01/lvol01

[root@hostname ~]# resize2fs /dev/vg01/lvol01

[root@hostname ~]# mount -t ext3 /dev/vg01/lvol01 /mnt/iscsi  # (or mount -a if entry exists in /etc/fstab)

[root@hostname ~]# df –h

If NOT using LVM (delete partition, recreate partition, resize and mount)

[root@hostname ~]# umount /mnt/iscsi

[root@hostname ~]# fdisk /dev/sdb

Command (m for help): d

Selected partition 1

Command (m for help): n

Command action

   e   extended

   p   primary partition (1-4) p

Partition number (1-4): 1

Accept Default Values for first and last cylinder

Command (m for help): t

Selected partition 1

Hex code (type L to list codes): 83

Command (m for help): p

Command (m for help): w

[root@hostname ~]# e2fsck /dev/sdb1

[root@hostname ~]# resize2fs /dev/sdb1

[root@hostname ~]# mount -t ext3 /dev/sdb1 /mnt/iscsi

[root@hostname ~]# df –h