Subject: Re: RAIDframe questions
To: Chris Ross <firstname.lastname@example.org>
From: Greg Troxel <email@example.com>
Date: 09/19/2007 16:21:25
Chris Ross <firstname.lastname@example.org> writes:
> Okay. So what are the options for dealing with swap?
> a) Have swap on sd0b or sd1b
> This means it will be "bad" if that disk fails, and I want the
> system to keep
> running. It'll not run at all, right?
Yes, if a disk fails, you can crash.
> b) Have swap on raid0b
> This means the above issue is in effect, but swapping will work if one
> of the disks fails, and the RAID is running in degraded mode, right?
yes. This is how I do it. to me, not using reboot/halt is just
breaking a bad habit - other things might want clean shutdown.
> There are issues with (b) where it suggests you put a 'b' partition
> on the
> underlying disks. Is this for the crash-dump code? Can crash-dumps not
> happen to a raid device? I guess I need to re-read the aforementioned
> document to check, but any comments from those who've been here
> before would be welcomed. Thanks!
Yes, the crash dump code is so low level that it doesn't go through
raidframe. so you can make a real partition that overlays. But be VERY
VERY CAREFUL. crash dumps not in the right place have been reported to