HP 3PAR StoreServ 7400 2-node Administrator's Manual

NOTE: The updatevv command can also update sets of virtual volumes. For a complete list of
options available for the updatevv command, see the HP 3PAR Command Line Interface Reference
and the HP 3PAR CLI Help.
Replacing a Read-Only Snapshot
The following example shows how to replace a read-only snapshot volume with a new read-only
snapshot volume.
In this example:
• test is a base volume (or a read-write snapshot). This volume holds the database.
• test.ro is a read-only snapshot of test. This snapshot is a read-only copy of the database.
• testuser1 is a user with updatevv rights for volume test.ro. See “Setting Administrative
Rights” (page 170) for instructions on setting rights for replacing a read-only snapshots.
When test.ro needs to be updated, testuser1 unmounts the filesystem on the host and then
issues the following HP 3PAR CLI command to replace test.ro with a new read-only copy:
cli% updatevv test.ro
This command removes test.ro and replaces it with a new read-only snapshot of test. This
new volume is also called test.ro.
NOTE:
In this example, test.ro can have a VLUN associated with it. The command will remember the
VLUN, remove the old snapshot, create a new snapshot, and recreate the VLUN with the new
snapshot.
After the snapshot is replaced, testuser1 must remount the filesystem on the host.
Replacing a Read-Write Snapshot
The following example shows how to replace a read-write snapshot volume with a new read-write
snapshot volume.
In this example:
• test is a base volume (or a read-write snapshot). This volume holds the database.
• test.ro1 is a read-only snapshot of test. This snapshot is the reference copy of the
database.
• test.rw1 is a read-write snapshot of test.ro1. This is a snapshot of the reference copy
of the database, created for development purposes.
• testuser1 is a user with updatevv rights for volume test.rw1 See “Setting Administrative
Rights” (page 170) for instructions on setting rights for replacing a read-write snapshots.
• When test.rw1 needs to be restored, testuser1 unmounts the filesystem on the host and
then issues the following HP 3PAR CLI command to replace test copy test.rw1 with a new
copy:
cli% updatevv test.rw1
This command removes test.rw1 and replaces it with a new snapshot of test.ro1. This new
volume is also called test.rw1.
Replacing Virtual Volume Snapshots 171

HP 3PAR StoreServ 7400 2-node Specifications

General

Brand	HP
Model	3PAR StoreServ 7400 2-node
Category	Storage
Language	English