VERITAS Storage Foundation 4.1 Oracle Administrator's Guide

Chapter 10, Using Database FlashSnap for Backup and Off-Host Processing
Prerelease 8 September 2005, 8:55am Preparing Hosts and Storage for Database FlashSnap
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sd PRODdg01-01 data_vol_dcl-01 ENABLED 560 0 - - -
pl data_vol_dcl-02 data_vol_dcl DISABLED 560 - DCOSNP - -
sd PRODdg02-02 data_vol_dcl-02 ENABLED 560 0 - - -
Identify that the specified plex is in the SNAPDONE state. In this example, it is data_vol-02.
The snapshot mirror is now ready to be used.
Upgrading Existing Volumes to Use VERITAS Volume Manager 4.1
The procedure described in this section describes how to upgrade a volume created using a version
older than VxVM 4.1 so that it can take advantage of database FlashSnap.
Note The plexes of the DCO volume require persistent storage space on disk to be available. To
make room for the DCO plexes, you may need to add extra disks to the disk group, or
reconfigure existing volumes to free up space in the disk group. Another way to add disk
space is to use the disk group move feature to bring in spare disks from a different disk
group.
Note Existing snapshot volumes created by the vxassist command are not supported. A
combination of snapshot volumes created by vxassist and vxsnap are not supported.
▼ To upgrade an existing volume created with an earlier version of VxVM:
1. Upgrade the disk group that contains the volume, to a version 120 or higher, before performing
the remainder of the procedure described in this section. Use the following command to check
the version of a disk group:
# vxdg list diskgroup
To upgrade a disk group to the latest version, use the following command:
# vxdg upgrade diskgroup
2. If the volume to be upgraded has a DRL plex or subdisk from an earlier version of VxVM, use
the following command to remove this:
# vxassist [-g diskgroup] remove log volume [nlog=n]
Use the optional attribute nlog=n to specify the number, n, of logs to be removed. By default,
the vxassist command removes one log.
3. For a volume that has one or more associated snapshot volumes, use the following command to
reattach and resynchronize each snapshot:
# vxsnap [-g diskgroup] snapback snapvol