dump routine for mlx devices
andykinney at advantagecom.net
Fri Apr 25 11:08:49 PDT 2003
On 25 Apr 2003, at 9:56, Fred Clift wrote:
> You wouldn't necessarily have to use the disk for swap space - just
> set it up as your dump device, but dont use it for swap at all.
That thought had crossed my mind briefly, but then it was wisked
away with the (apparently) mistaken belief that the dumpdev
needed to be mounted as swap for the kernel to be able to access
it at the time of the crash.
That belief has changed in the face of contrary truth.
I think I see now why no one cares whether or not they can dump
to a RAID. If the IDE device isn't in use by the system except in
the case of a crash, who cares if the device fails? You might get
some weird error messages, but the system shouldn't panic unless
you do something wacked (like 'swapon /dev/broken-device') with
the hardware after it has failed. Of course, you still have to
eventually take the system down and remove/replace the broken
device, which is something I *don't* have to do if one of the
physical drives backing my mlx RAID goes bad.
Thanks for the response, Fred. It made things instantly clear for
Chief Technology Officer
Advantagecom Networks, Inc.
More information about the freebsd-hackers