To set the site consistency requirement when creating a volume, specify the siteconsistent
attribute to the vxassist
make
command, for example:
# vxassist
[-g
diskgroup
] make
volume
size
\
nmirror=4 siteconsistent=
{on
|off
}
By default, a volume inherits the value that is set on its disk group.
By default, creating a site-consistent volume also creates an associated version 20 DCO volume, and enables Persistent FastResync on the volume. This allows faster recovery of the volume during the reattachment of a site.
To turn on the site consistency requirement for an existing volume, use the following form of the vxvol
command:
# vxvol
[-g
diskgroup
] set siteconsistent=on
volume
To turn off the site consistency requirement for a volume, use the following command:
# vxvol
[-g
diskgroup
] set siteconsistent=off
volume
The siteconsistent
and allsites
attributes must be set to off
for RAID-5 volumes in a site-consistent disk group.