Disk Mirroring

[bgdak]

I am looking to mirror a Hard Disk on an Origin 200. I am not familiar with this process. Can anyone give me a suggestion on how to do this?

Thanks
Brad

 

[wakuuuup]

You need to use XLV constructs to build a mirror.
xlv_make is used to define a XLV volume. You
use xlv_make to define striped logical volumes, real-time
volumes, mirrored volumes and so on.

The xlv_make man pages detail the exact syntax used, but
to define a mirror, you need to use the following commands
(please check the man pages - I have probably got the syntax
wrong somewhere!)

Two things to note:
1. The volume elements (see below) must be the same size
as each other
2. You need a PLEX license from SGI to enable the use of
multiple plexes (mirrors).

#xlv_make
-Starts the xlv_make util

xlv_make> vol <your_mirrored_volume_name>
-eg. vol mirror1
-Defines a XLV volume

xlv_make> data
-Defines a data subvolume within your XLV volume

xlv_make> plex
-Defines a plex (mirror) within your subvolume

xlv_make> ve device_name
-eg. ve /dev/dsk/dks1d1s7
-Defines a volume element (partition) to be used in your
plex

xlv_make> plex
-Defines the second mirror

xlv_make> ve device_name
-eg. ve /dev/dsk/dks1d2s7
-Defines a ve to be used in your second plex

xlv_make> end
-Ends definition

xlv_make> exit
-Writes out changes to disk volume headers and exits.

Hope this helps.