knowing which LUNs I can delete after deleting a volume group

[Tim Killinger]

After deleteing an old volume group that I no longer need, how can I identify which LUNS on my va7410 can now be deleted (and which ones are still in use)?

[Torsten.]

Using vgdisplay and ioscan find out which LUNs are still in use.

Get the disk special files from vgdisplay -v ...
and compare with "ioscan -fnCdisk".

Now calculate the LUN number from hardware path.

[Tim Killinger]

I definitely can see the hardware path and it associated device files, but within command view I don't see where there is a andy info to correlate a lun with a hardware path. I must be missing something.

From armdsp -L:

LUN 11:
Redundancy Group:_____________________1
Active:_______________________________True
Data Capacity:________________________10 GB
WWN:__________________________________60060b0000151163000b0000000000bd
Number Of Business Copies:____________0

LUN 12:
Redundancy Group:_____________________2
Active:_______________________________True
Data Capacity:________________________10 GB
WWN:__________________________________60060b0000151163000c0000000000be
Number Of Business Copies:____________0

[Steven E. Protter]

Shalom,

I'd do a vgdisplay -v and grep for the disk devices you believe are ready for re-use.

Any disks in ioscan but not in volume groups are likely candidates for re-sue.

Then use pvdisplay on them to see if any LV information is on them.

SEP

[Torsten. · Accepted solution]

"armtopology" command may help you too.

[Chandrahasa s]

HI,


strings /etc/lvmconf/vgname.conf

vgname is yours old deleted vgname

here you can find disks which under this vg

powermt display dev=all

and find lunid

if v3 and emc storage

you can use

syminq


Chandra

[Torsten.]

These tools are not related to the VA7410 and are probably not there.


However, I think armtopology will help you.


You also can compare the hardware pathes, e.g. LUN 11 will end with


....0.1.3

[Tim Killinger]

armtopology... that's the answer! thanks!