[PC-BSD Testing] Panic from ZFS

Odhiambo Washington odhiambo at gmail.com
Fri Oct 24 00:49:22 PDT 2008


On Fri, Oct 24, 2008 at 7:30 AM, Edward O'Callaghan
<victoredwardocallaghan at gmail.com> wrote:
> Hi,
>
> You can get version 6 of zfs to panic in FreeBSD by doing the following;
> * Have 512 or less MB of RAM
> * Fill most of your zpool up then run a zpool scrub on the pool..
>
> This is a out-of-memory kernel panic that particularly affects i386.
>
> My suggested work around is to put the following into loader.conf
> vfs.zfs.zil_disable=1
> vfs.zfs.prefetch_disable=1
>
> N.B. Disabling ZIL can have serious consequences depending on your workload.
> FreeBSD 8 upgrades ZFS to version 11. However I am not sure how this
> affects things as this only happens on FreeBSD and not Solaris.
>
> Kris, As I said before. I highly recommend you disable ZFS support on
> 32bit systems with less then 1gb of ram else people _could_ lose data
> ?

I've always believed that there is a HEADS UP somewhere that said
something about dedicating at least 1GB for ZFS on FreeBSD.

-- 
Best regards,
Odhiambo WASHINGTON,
Nairobi,KE
+254733744121/+254722743223
_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _
"Life must be understood backwards; but... it must be lived forward."
                            - Soren Kierkegaard
"Oh My God! They killed init! You Bastards!"
                        --from a /. post


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