Storing snapshot data in a snapshot group containing pairs sharing a P-VOL

Thin Image Advanced User Guide

Version
9.8.6
Audience
anonymous
Part Number
MK-98RD9033-00

If a snapshot group contains two or more pairs that share the same P-VOL, you cannot store snapshot data (split the pairs) for the entire snapshot group at the same time. If you want to store snapshot data for multiple pairs in the snapshot group in this case, complete storing of snapshot data for one pair and then store snapshot data of another pair. You need to store snapshot data one pair at a time.

The following example shows how to store snapshot data for a snapshot group containing three pairs sharing one P-VOL (LDEV number 1).

  1. Store snapshot data of the P-VOL (LDEV number 1) of MU number 3.
    Command example:
    raidcom modify snapshot -ldev_id 1 -mirror_id 3 -snapshot_data split
  2. Check that the command processing in step 1 has completed.
    Command example:
    raidcom get snapshot -ldev_id 1 -mirror_id 3 -check_status_not PSUP
    -time 600
    
  3. Store snapshot data of the P-VOL (LDEV number 1) of MU number 4.
    Command example:
    raidcom modify snapshot -ldev_id 1 -mirror_id 4 -snapshot_data split
  4. Check that the command processing in step 3 has completed.
    Command example:
    raidcom get snapshot -ldev_id 1 -mirror_id 4 -check_status_not PSUP
    -time 600
    
  5. Store snapshot data of the P-VOL (LDEV number 1) of MU number 5.
    Command example:
    raidcom modify snapshot -ldev_id 1 -mirror_id 5 -snapshot_data split
  6. Check that the command processing in step 5 has completed.
    Command example:
    raidcom get snapshot -ldev_id 1 -mirror_id 5 -check_status_not PSUP
    -time 600