Extended LUN size is not reflected in Guest VM (DomU) (Doc ID 2371574.1)

Last updated on SEPTEMBER 08, 2022

Applies to:

Symptoms

• LUN directly connected to a Guest VM (DomU) is extended in the storage array;
• Oracle VM Manager shows correctly the new LUN size, after refreshing it via the Storage tab;
• Guest VM (DomU) does not detect new disk size
• multipath -ll does not show correct new size on Oracle VM Server  , command  'fdisk -l' and/or 'lsblk'  might show correct LUN's size

Example (taken from an Oracle VM Server):

multipath -ll

360002ac00000000000000036000030b1 dm-74 3PARdata,VV
size=900G features='1 queue_if_no_path' hwhandler='1 alua' wp=rw <--- WRONG SIZE!
'-+- policy='round-robin 0' prio=130 status=active
|- 1:0:0:39 sdao 66:128 active ready running
|- 1:0:1:39 sdcd 69:16 active ready running
|- 2:0:0:39 sdds 71:160 active ready running
'- 2:0:1:39 sdfh 130:48 active ready running

fdisk -l

Disk /dev/sdao: 1503.2 GB, 1503238553600 bytes
Disk /dev/sdcd: 1503.2 GB, 1503238553600 bytes
Disk /dev/sdds: 1503.2 GB, 1503238553600 bytes
Disk /dev/sdfh: 1503.2 GB, 1503238553600 bytes

lsblk

sdao 66:128 0 1.4T 0 disk
sdcd 69:16 0 1.4T 0 disk
sdds 71:160 0 1.4T 0 disk
sdfh 130:48 0 1.4T 0 disk

Cause

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