I have a volumes for Which COW and HUR is enabled, Please let me know the procedure to expand the volumes
Do i have to use pair split -r or pair split -S or ? please suggest.
After expanding data V-VOL (P-VOL), you need to create a new COW V-VOL (S-VOL) to match the P-VOL size, then recreate pair. If you use a different CU:LU for COW V-VOL, update horcm.conf files as needed. Reusing CU:LU for COW V-VOL could complicate OS size recognition (OS dependant).
Please follow Hitachi Copy-on-Write Snapshot User Guide MK-90RD7013-0x procedures
After deleting the pair, the status will be SMPL (PD) for a while during internal COW pair deletion and you will be unable to paircreate during that time. To shorten that period resync pair, wait until status changes to PAIR (no delta stored), and then delete the pair.
From Provisioning Guide for Open Systems (RD70227), Interoperability of DP-VOLs and pool-VOLs (5-10):
Is not allowed to Increase the capacity of a DP-VOL used by COW/HUR
So, you will need a pairsplit -S, resize and paircreate again
After i Split the COW, can i use the same v-vol to pair again? how do i re establish the COW again for this expanded volume?
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