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About swap, the swap in even a non-raid kernel will inherently utilize a
number of disks as long as the priority is the same. Here's my /etc/fstab:
/dev/hde4 swap swap defaults,pri=1 0 0
/dev/hdf4 swap swap defaults,pri=1 0 0
and here's /proc/swaps:
Filename Type Size Used Priority
/dev/hde4 partition 1076344 45236 1
/dev/hdf4 partition 1076344 45248 1
I don't remember where this is in which software RAID HOWTO, but I remember
seeing it. Swap will span a number of disks--not just two. This adds
performance and redundancy, but I've never tried to fail one of them to test
it :(
/mario
On Tuesday 15 June 2004 21:21, Ken Elliott wrote:
> I usually set my Windows servers for RAID 1 (mirroring) on the boot disk.
> But it seems Linux won't let me do this. Perhaps I'm doing it wrong, but
> I've found no docs on this.
>
> Here's what seems to work:
> Set /boot on it's own partition, and set RAID 1 on /, /usr and /home, etc.
> Both disks have swap partitions, but if I crash either disk, the loss of
> swap will kill the box. So, to get the real benefits, I must be able to
> mirror Swap, or do without it (not good). If the loss of a disk crashes
> the server, I might as well skip mirroring and setup a cron job to copy
> changed files ever so often...
>
> I did find a site where a fellow put together a lengthy process involving
> more drives and a lot of work. But it was written 4 years ago for kernel
> 2.2. I'm on 2.6.
>
> Oh, yeah... The "hardware" RAID in the Intel 865 chipset is software
> dependent - not true HW RAID.
>
> Thoughts?
>
> Ken Elliott
>
> =====================
>
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