Ulrich Windl schrieb:
> On 9 Feb 2009 at 11:11, Tomasz Chmielewski wrote:
> 
>> Is it safe to use swap over iSCSI?
>> Or will the system deadlock under memory pressure?
> 
> Why should a system deadlock? You mean iSCSI needs memory (for TCP transport) 
> to 
> page out, but getting that memory would trigger annother page out?

Yes. See also this discussion:

http://kerneltrap.org/Linux/Swap_Over_NFS


>> There were some patches for swapping over NFS lately on lkml, which is 
>> "a bit" similar.
> 
> If the system (and subsystems) reserver some emergency memory buffers, there 
> should be no such problem, but trying may be better than guessing ;-)

Does something like this exist in Linux kernel? "Emergency memory buffer"?


-- 
Tomasz Chmielewski
http://wpkg.org

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