Recovering from copy-on-write failure


Recovering from copy-on-write failure
Prev	Recovering from instant snapshot failure	Next

If an error is encountered while performing an internal resynchronization of a volume's snapshot, the snapshot volume goes into the INVALID state, and is made inaccessible for I/O and instant snapshot operations.

To recover from copy-on-write failure

Use the vxsnap command to dissociate the volume from the snapshot hierarchy:
```
# vxsnap [-g diskgroup] dis snapshot_volume
```

Unprepare the volume using the following command:

# vxsnap [-g diskgroup] unprepare snapshot_volume

Prepare the volume using the following command:
```
# vxsnap [-g diskgroup] prepare volume [ndcomirs=number] \
 [regionsize=size] [drl=yes|no|sequential] \
 [storage_attribute ...]
```
The volume can now be used again for snapshot operations.

Alternatively, you can remove the snapshot volume and recreate it if required.

Prev	Up	Next
Recovering from the failure of vxsnap reattach or refresh	Home	Recovering from I/O errors during resynchronization