Matt Mossholder on 11 Apr 2013 08:06:51 -0700

[Date Prev] [Date Next] [Thread Prev] [Thread Next] [Date Index] [Thread Index]

Re: [PLUG] RAID for swap?

If your swap disappears, you're probably looking at several programs crashing, and maybe even a kernel panic. If you want to ensure availability, I would use one of the faster RAID methods for swap.

With regards to partitioning, you're going to need /boot mirrored between the devices, and the boot loader installed on both disks. You might be able to get away with having /boot reside in /, as long as you aren't utilizing LVM or anything else that requires a initrd/initramfs.


 Â --Matt

On Thu, Apr 11, 2013 at 10:49 AM, Casey Bralla <> wrote:
Recently, I got a lot of good advice about how to setup RAID and I have a
follow-up question.

Should I RAID the swap space too?

It seems to me that having the swap partition RAID'd would increase the
reliability of swap, at the penalty of execution speed when it is needed.
Alternately, I could simply create two swap partitions, and only use 1 of
them. ÂIf that disk died, I could just manually activate the swap on the other

BTW, my situation is that I have 2 identical SATA disks. ÂI thought I would
partition them identically, with a single large root partition and a swap
partition. ÂI could put the /boot partition separately on one of the disks in
lieu of the second swap partition, but then I've reduced the reliability of
booting if one disks dies.

Any thoughts or suggestions? ÂTIA!

Casey Bralla

Chief Nerd in Residence
The NerdWorld Organisation
Philadelphia Linux Users Group     --    Â
Announcements -
General Discussion Â-- Â

Philadelphia Linux Users Group         --
Announcements -
General Discussion  --