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Re: Suspending to swap with two OS's

Dotan Cohen wrote:
On 14/07/07, Sam Varshavchik <mrsam courier-mta com> wrote:
Dotan Cohen writes:

> sda1 is Ubuntu, sda2 is empty, sda3 is swap, and sda4 is /home. I'd
> like to install Fedora to sda2 and use sda3 as swap for Fedora as
> well. However, I'm concerned that when Ubuntu suspends it will dump
> it's memory to swap, which Fedora will overwrite when I boot Fedora
> (and vice versa). Is this a valid concern? Should I give each OS it's
> own swap?

Yes, it's a valid concern, and that's exactly what will happen, if you
configure this partition as a swap partition, in Fedora.

Thanks. As I'm running out of disk space in /home, I'd rather not
create another swap partition. Is it true that a swap file on the same
disk as the file system performs as well as a swap partition? This
machine has 2 GB of physical memory.

Swap to file is not as fast, and I have the feeling that restore may be at too low a level to use it. There are some options on where the suspend data is written, I'm sorry I can't recall the details other than the fact that you can control that. Look for a boot option or something.

This came out of a discussion I initiated regarding a restore requiring booting the same kernel that was suspended. The consensus was that that might not be true in the future, restoring whatever was suspended was possible if desired.

Bill Davidsen <davidsen tmr com>
  "We have more to fear from the bungling of the incompetent than from
the machinations of the wicked."  - from Slashdot

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