Date: Sat, 8 Sep 2007 13:25:29 -0700 (PDT) From: Simun Mikecin <numisemis@yahoo.com> To: peter.schuller@infidyne.com Cc: freebsd-fs@freebsd.org, freebsd-current@freebsd.org Subject: Re: Swapping on ZFS - stability issue Message-ID: <855622.76488.qm@web36601.mail.mud.yahoo.com>
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Peter Schuller wrote:
>> I'll see if I can confirm behavior on a more recent CURRENT. The above was on=20
>> CURRENT:s from 1-2 months ago in both cases.
> Confirmed on CURRENT cvsup:ed today (2007-09-08). However, the speed
> at which swap was filling was much faster - on par with swap on
> non-ZFS. But the machine still effectively froze, save the
> console/ping, after a few seconds.
> Also, I forgot to say this is all on amd64 machines.
Try one of this (depends wheter you need encrypted swap or not):
1. create zvol with 4k blocksize instead of default 8k:
zfs create -b 4k -V 4g tank/swap
swapon /dev/zvol/tank/swap
2. use geli encrypted swap with a sectorsize of 4k:
zfs create -V 4g tank/swap
geli onetime -s 4096 /dev/zvol/tank/swap
swapon /dev/zvol/tank/swap.eli
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