Recovering from the failure of vxsnap make for full-sized instant snapshots


Recovering from the failure of vxsnap make for full-sized instant snapshots
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If a vxsnap make operation fails during the creation of a full-sized instant snapshot, the snapshot volume may go into the DISABLED state, be marked invalid, and be rendered unstartable. You can use the following command to verify that the inst_invalid flag is set to on:

# vxprint [-g diskgroup] -F%inst_invalid snapshot_volume

VxVM usually recovers the snapshot volume without intervention. However, in certain situations, this recovery may not succeed. If this happens, the DCO volume must be deleted.

To recover from the failure of the vxsnap make command for full-sized instant snapshots

Clear the snapshot volume's tutil0 field. Enter the following command:
```
# vxmend [-g diskgroup] clear tutil0 snapshot_volume
```
Unprepare the snapshot volume. Enter the following command:
```
# vxsnap [-g diskgroup] unprepare snapshot_volume
```
If the snapshot volume is in DISABLED state, start the snapshot volume. Enter the following command:
```
# vxvol [-g diskgroup] start snapshot_volume
```
Prepare the snapshot volume again for snapshot operations. Enter the following command:
```
# vxsnap [-g diskgroup] prepare snapshot_volume
```
Clear the volume's tutil0 field (if it is set). Enter the following command.
```
# vxmend [-g diskgroup] clear tutil0 original_volume
```

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