On Tue, Aug 29, 2006 at 02:28:50PM -0600, Greg Oster wrote:
> Josh Grosse writes:
> > Has anyone using Root on RAID managed to point their dumpdev at a swap
> > space,
> > either within a RAID array or on a standard swap partition?
>
> Dumping to a standard swap partition on a RAID set is not supported.
Could you clarify what you mean? I have a raid1b partition markes as
swap, and a wd0b partition marked as swap, and I have not figured out how
to get a dump device assigned, so far, unless I use "swap on wd0b" -- which
is unmirrored. I have no problem with having an unprotected dump area, but
I am concerned about using the partition as swap space.
<snip>
> > I have tried modifying the config line. If I use:
> >
> > config bsd root on wd0a swap on wd0b
> >
> > then I do get an unmirrored partition as my swap_device, and it is also a
> > dump device.
>
> Does the config syntax support "dumps on wd0b"? Dunno if you can use
> something like:
>
> config bsd root on wd0a swap on wd0b dumps on wd0b
>
> but that might be sufficient...
Since "root on wd0a swap on wd0b" assigns the dump device, isn't "dumps
on wd0b" redundant? Or have I misunderstood you? Do you think an explicit
assignment would change this behavior
> > But ... adding /dev/raid1b doesn't work -- adding this device
> > to /etc/fstab seems to be ignored, and "swapctl -a /dev/raid1b" fails with
> > "file not found." raid1b is an unacceptable keyword for kernel config.
>
> Dunno about any of this.... I'd have suggested using
> 'swapctl -D /dev/wd0b', but I don't believe that'd work for you...
There is no -D in current. Is there an uncommitted swapctl.c in development?
> > Anyone with a successful swap/dump setup who might be able to point me to
> > what I'm missing?
>
> You should be able to do it, but not to swap on a RAID set...
I can swap on a RAID set just fine, but only if I leave the config line in
GENERIC untouched. But if I do that, I have no dump device. I seem to be
able to swap and dump to non-raid thru altering the config line, as I
described. But if I do that, I cannot then add a RAID set to the swap list.
