Suspending to swap with two OS's

[Bill Davidsen]

Dotan Cohen wrote:
> On 14/07/07, Sam Varshavchik <mrsam at 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 at tmr.com>
   "We have more to fear from the bungling of the incompetent than from
the machinations of the wicked."  - from Slashdot