On Tue, Feb 21, 2017 at 10:19 AM, Gianluca Cecchi <gianluca.cecchi(a)gmail.com
wrote:
Hello,
currently I have a cluster of 3 hosts where each one has FC SAN
connectivity to 4 LUNs: 3 are already configured as storage domains (1TB,
2TB, 4TB), one is free, not allocated.
See here for screenshot:
https://drive.google.com/file/d/0BwoPbcrMv8mvRVZZMTlNcTQ5MGs/
view?usp=sharing
At the moment the command "multipath -l" run on hosts shows all the 4 LUNs.
Now I want to do 2 things at storage array level:
- remove the 2TB storage domain LUN
- remove the 20Gb LUN not yet allocated
What is the correct workflow, supposing I have already emptied the 2TB
from VM disks ad such?
Select 2Tb SD, then Datacenter subtab, then "maintenance", detach" and at
the end "remove"?
Yes, these should be your first steps.
I think I continue to see 4 LUNs at this point, correct?
Yes.
Now I proceed with removal of lun at storage array level?
Should I select an SD line and then "Scan disks" to see refresh the SAN
and see in multipath only 2 of them at the end?
Or any manual command at host level before removal from array?
After removing the storage domains you should be able to remove the luns.
I am not extremely familiar with the multipath and low-level scsi commands
but I would try the scan disks button and if the luns are not gone from
your host you can manually remove them. I think that involves removing the
device from multipath (multipath -d) and deleting it from the scsi
subsystem.
Thanks in advance
Hope this helped you.