ZFS patches

[Matt Simerson]

It's still a bit too early for me to make any announcement about ZFS  
and stability on HEAD but I was having deadlocks on 7.0 every other  
day under my workload. I took the plunge and upgraded both my servers  
(which are now in production, BTW) to HEAD.  I have one running HEAD  
without the latest patches and one with HEAD + patch and have not  
experienced a deadlock since the upgrade.

FreeBSD back01.int.spry.com 8.0-CURRENT FreeBSD 8.0-CURRENT #0: Fri  
Aug 15 16:42:36 PDT 2008     root at back01.int.spry.com:/usr/obj/usr/src/ 
sys/BACK01  amd64

FreeBSD back02.int.spry.com 8.0-CURRENT FreeBSD 8.0-CURRENT #1: Wed  
Aug 13 13:57:19 PDT 2008     root at back02.int.spry.com:/usr/obj/usr/src/ 
sys/BACK02-HEAD  amd64

It turns out that I disliked the known instability of ZFS and 7-STABLE  
than the unknown risks associated with HEAD. As always, YMMMV but  
since ZFS is still experimental, odds are good you'll have a better  
experience if you are willing to upgrade to -HEAD.

Matt

$ cat /boot/loader.conf
vm.kmem_size="1536M"
vm.kmem_size_max="1536M"
vfs.zfs.arc_min="16M"
vfs.zfs.arc_max="64M"
vfs.zfs.prefetch_disable=1



On Aug 21, 2008, at 5:44 AM, Lorenzo Perone wrote:

> Hi,
>
> Just let me intro this mail with a "Sorry for asking..."
> as I know the efforts already ongoing ar huge and I do
> respect this!
>
> But, here it is: any chances to see these patches on
> 7-STABLE anytime... soon?
>
> I think there would be many more testers available (me included)
> than for HEAD. In my case, for example, all I could afford now
> is to set up a complete-test-only box with the HEAD code, which in
> turn wouldn't be a real test case as it would be "just" a test box
> for zfs.
>
> Whereas I could afford to test it in much more "real life"
> situation with 7-STABLE.
> My guess is that this would be the case for many others.
>
> The problem about HEAD is that there would be too many
> spots with potential problems (which ports work, which don't,
> scripts that might make 7-bound assumptions, etc..)
> so that I can't afford that for anything below "test only" boxes..
>
> Just experienced a deadlock again on 7-STABLE with zfs, that's
> why I'm refreshing this...
>
> Kudos && Regards,
>
> Lorenzo
>
>
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