How to Find Unused Luns

[Eric Jacklin]

Hi team,

Can anybody let me know how do i check my HP VA7410 for unused Lun.

This storage is connected with Two Host and it is containing the FS of both storage.

I would appriciate if anybody can help me out in this

[AwadheshPandey]

you can go to command view adm and see unused/ungrouped luns.
on OS side,
ioscan -funCdisk > /tmp/disk.used
ioscan -fnCdisk
insf -C disk
ioscan -funCdisk > /tmp/disk.all
diff /tmp/disk.used /tmp/disk.all

if disks are assigned and drives installed,
use vgdisplay -v |grep "PV N"

Regards,

[Torsten.]

Best solution:

Refer to your documentation!
You should document what LUNs are assigned to which host and used for what application.

If you don't have, it could be hard.
Look at every system what disks are under LVM control.
Disks not used for a filesystem could even be used as "raw" space for a database for example - be careful!

[Pankaj Rudrawar]

Hello,

Simple way.

ioscan -f (Reason:- It will detect all the disk forcefully which are not having permission and specifically required from storage perspective)

insf -evd sdisk

dv -dv 2>&1(this will give you the details of LUN's which are not assigned to any VG)

Output:-

C#t#d# lone disk(not in any vg): at