[svlug] booting from software raid?

Marc MERLIN marc_news at valinux.com
Tue May 30 18:11:12 PDT 2000


On mar, mai 30, 2000 at 11:55:23 -0700, Deirdre Saoirse wrote:
> On Tue, 30 May 2000, Arthur Thomas wrote:
> 
> > i agree with the fact that this is a bad idea however , with / being
> > mirrored, should a disk fail, the machine will stay up. how else
> > (without hardware raid) can I accomplish this ?
> 
> ::throws hands up::
> 
> You miss the point. It can't know about how to do raid until the raid
> software is loaded. I.e., you have created a chicken/egg problem. Clearly,
> the partition containing the information on how to do raid cannot itself
> be raided with software raid.

Yeah, so you yank the bad disk and the system boots from the other one.

If you have a realweasel card, or VACM, you tell the SCSI bios not to boot
that disk, and you boot from your other drive.

Marc
-- 
Microsoft is to software what McDonalds is to gourmet cooking
 
Home page: http://marc.merlins.org/ (friendly to non IE browsers)
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