Swap on zvol - recommendable?
peter at pean.org
Tue Feb 7 19:53:14 UTC 2012
I can just tell you I had this problem still in 8.1 and it was a HUGE problem.
System stalled every two weeks or so. Now when the swap is moved away from
zfs it works fine.
On Feb 6, 2012, at 11:57 AM, Patrick M. Hausen wrote:
> Hi, all,
> is it possible to make a definite statement about swap on zvols?
> I found some older discussions about a resource starvation
> scenario when ZFS arc would be the cause of the system
> running out of memory, trying to swap, yet the ZFS would
> not be accessible until some memory was freed - leading to
> a deadlock.
> Is this still the case with RELENG_8? The various Root on
> ZFS guides mention both choices (decicated or gmirror
> partition vs. zvol), yet don't say anything about the respective
> merits or risks. I am aware of the fact that I cannot dump to
> a raidz2 zvol ...
> Thanks for any hints,
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