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439Administering sites and remote mirrors
Making an existing disk group site consistent
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
4 Use 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.
5 Use 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 any site.
Command Description