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
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