Veritas Storage Foundation 5.0 for Oracle RAC Configuration Guide Extracts for HP Serviceguard Storage Management Suite, Second Edition, May 2008

Using FlashSnap for Backup and Recovery

Preparing Hosts and Storage for Database FlashSnap

Chapter 5

1. Upgrade the disk group, PRODdg.

# vxdg upgrade PRODdg

2. Remove the DRL plexes or subdisks, belonging to an earlier version of VxVM, from

the volume to be upgraded.

# vxassist -g PRODdg remove log data_vol logtype=drl

3. Reattach any snapshot volume back to the primary volume to be upgraded.

# vxsnap -g PRODdg snapback SNAP-data_vol

4. Turn off FastResync on the volume to be upgraded.

# vxvol -g PRODdg set fastresync=off data_vol

5. Disassociate and remove any older DCO object and DCO volumes.

# vxassist -g PRODdg remove log data_vol logtype=dco

6. Upgrade the volume by associating a new DCO object and DCO volume.

# vxsnap -g PRODdg prepare data_vol alloc="PRODdg01 PRODdg02"

7. View the existing DCO plexes and plex state.

• Scenario 1

In this scenario, there are enough DCO plexes for the data plexes. Also, no data

plex is associated with a DCO plex.

# vxprint -g PRODdg

v data_vol fsgenENABLED4194304-ACTIVE - -

pl data_vol-01 data_volENABLED4194304-ACTIVE - -

sd PRODdg01-01 data_vol-01ENABLED41943040- - -

pl data_vol-04 data_volENABLED4194304-SNAPDONE - -

sd PRODdg02-03 data_vol-04ENABLED41943040- - -

dc data_vol_dco data_vol---- - -

v data_vol_dcl genENABLED560-ACTIVE - -

pl data_vol_dcl-01 data_vol_dclENABLED560-ACTIVE - -

sd PRODdg01-02 data_vol_dcl-01ENABLED5600- - -

pl data_vol_dcl-02 data_vol_dclENABLED560-ACTIVE - -

sd PRODdg02-02 data_vol_dcl-02ENABLED5600- - -

a. Convert the data plex state from SNAPDONE to ACTIVE.

# vxplex -g PRODdg convert state=ACTIVE data_vol-04

b. Associate the data plex with a new DCO plex and convert it back to a

SNAPDONE state.