All of our Filers are FAS2040's running OnTap 7.3.4. FilerA is the Production system and FilerB is effectively its DR (all the volumes on FilerA are snapmirrored onto this system)
Issue: We need to expand one of the volumes on FilerA (and as a consequence on FilerB). The aggregate this volume sits on doesn't have enough space so the plan is to move another volume onto a different aggregate.
I've done some searching and found lots of info on this but everything I've read only deals with moving the source volume of a snapmirror to a new aggregate. In our case we're going to be moving both!
So I've come up with this plan which I believe (hope) will work and would appreciate people having a look and letting me know if I've missed something obvious or am in danger of losing any data!
The volume to be moved is called cifsvol4. The work will be carried out overnight so we've no problem with any outage
- stop cifs
- take a copy of snapmirror.conf, just in case
- update the snapmirror of cifsvol4
- when complete, quiesce and break the snapmirror relationship
On BOTH filers
- create a new volume on the other aggregate call cifsvol4_NEW
- restrict the new volume (volume restrict cifsvol4_NEW)
- make cifsvol4 read-only (volume restrict cifsvol4)
On BOTH Filers
- start the volume copy of cifsvol4 (volume copy start -S cifsvol4 cifsvol4_NEW)
When the volume copies have finished
On Both Filers
- rername cifsvol4 cifsvol4_OLD
- rename cifsvol4_NEW cifsvol4
- make sure cifsvol4 is read-write (volume online cifsvol4)
- check that cifsvol4 is restricted
- this is the bit where I'm a little uncertain. Do I just resume the snapmirror or do I have to resync?