Veritas Volume Manager 5.0 Administrator's Guide (September 2006)

431Administering sites and remote mirrors

Making an existing disk group site consistent

To make an existing disk group site consistent

1 Ensure that the disk group is updated to at least version 140, by running the vxdg

upgrade command on it:

# vxdg upgrade diskgroup

2 On each host that can access the disk group, define the site name:

# vxdctl set site=sitename

3 Tag all the disks in the disk group with the appropriate site name:

# vxdisk [-g diskgroup] settag disk site=sitename

4Use the vxdg move command to move any unsupported RAID-5 volumes to another

disk group. Alternatively, use the

vxassist convert command to convert the

volumes to a supported layout such as

mirror or mirror-stripe. You can use the

site and mirror=site storage allocation attribute to ensure that the plexes are

created on the correct storage.

5Use the vxevac command to ensue that the volumes have equal number of plexes at

each site. You can use the

site and mirror=site storage allocation attribute to

ensure that the plexes are created on the correct storage.

6 Register a site record for each site with the disk group:

# vxdg -g diskgroup addsite sitename

7 Turn on site consistency for the disk group:

# vxdg -g diskgroup set siteconsistent=on

8 Turn on site consistency for each volume in the disk group:

# vxvol [-g diskgroup] set siteconsistent=on volume ...

# vxassist -g ccdg remove \

mirror vol site:site1

Remove a mirror from a volume at a specified

site. If the volume is site consistent, the

command fails if this would remove the last

remaining plex at a site.

# vxassist -g ccdg growto vol 4g Grow a volume. If the volume is site consistent,

the command fails if there is insufficient storage

available at each site.

Command Description