This is the summary regarding my questions about LSM and mirroring.
> I'm curious about LSM. Please correct me if I am wrong, but isn't it
> possible to use LSM to mirror everything, including /, and swap?
The answer is yes. It's quite possible to use LSM to mirror /, /usr,
swap, etc. Refer to the LSM documentation for details. See the man page
on /usr/sbin/volrootmir.
> Assuming they are mirrored with LSM, can the system stay up and
> running if someone removes half of the mirror which holds / and swap
> by physically pulling the disk out of its shelf?
Again, the answer is yes. Many people have done just this, and had their
system keep running. What fun.
Several people commented that if you are running on the mirror disk, you
probably need to update the boot bootdef_dev variable at the SRM console.
Also note that you can set multiple boot devices in this variable like so
>>> set bootdef_dev rz0,rz8
so that each device is checked in turn.
Thanks go to:
George Guethlein <GGuethlein_at_GiantOfMaryland.com>
Jeff Beck <JBeck_at_CareWiseInc.com>
"Allen, Mark R (PBD)" <Mark.Allen_at_pbdir.com>
Balaji <digital_at_astro.ocis.temple.edu>
"SIMEONE, Allan J." <Allan.SIMEONE_at_rp-rorer.com>
"Dr. Tom Blinn, 603-884-0646" <tpb_at_zk3.dec.com>
John Becker <John.Becker_at_digital.com>
Gary Menna <G.Menna_at_isu.usyd.edu.au>
"John Robens" <jrobens_at_davidjones.com.au>
Willig Reimund <Willig.Reimund_at_gdr.de>
Martyn Johnson <Martyn.Johnson_at_cl.cam.ac.uk>
"Dr. Ram Rao" <ram_at_ini.dec.com>
----- End forwarded message -----
Received on Fri Jul 31 1998 - 14:48:38 NZST