zfs filesystem problem

[Jurgen Weber]

Thanks

I was able to reboot this machine last night which solved the immediate 
problem.

I'll let you know how I go.


On 7/06/10 11:22 PM, jhell wrote:
> On 06/07/2010 01:46, Sergiy Suprun wrote:
>> On Mon, Jun 7, 2010 at 06:45, Jurgen Weber<jurgen at ish.com.au>  wrote:
>>
>>> Hello
>>>
>>> I have a FreeBSD 8.0-p2 system, which runs two pools. One with 6 disks all
>>> mirrored for our data and another mirrored pool for the OS. The system has
>>> 16GB of RAM.
>>>
>>> I have a nightly cron script running which takes a snapshot of a particular
>>> file system within the storage pool. This has been running for just over a
>>> month now without any issues until this weekend.
>>>
>>> Now we can not access the mentioned file system. If we try to `ls` to it or
>>> `cd` into it the shell locks up (not even kill -9 can stop the `ls`
>>> processes, etc) and top shows that the process state is `zfs`.
>
> This is most likely caused by some bugs that were found and fixed in
> stable/8. One of the commits that mm@ made has touched that zio->iowait
> that you should see your processes are stuck in.
>
> There still seems "at least in my case" some zio->iowait problems going
> on but I have not pinned that down to the cause yet, but they have not
> caused any of my system proccesses to freeze in that state.
>
> Grab a kernel from one of the snapshots that were made sometime last
> month to test this out just to be sure so your not upgrading for no
> reason. When I say kernel I mean kernel&  modules that go with it as ZFS
> is a module and you will obviously need that.
>
> Please report back on your findings if the kernel from stable fixed your
> problem.
>
> URL to retrieve snapshots: http://bit.ly/aLoXXV
>
> Good Luck!,
>
>
> <Irrelevant>
>> Hello.
>> How about scrub ?
>> And which size of your pools and how many place used by data+snapshots?
> </Irrelevant>.
>

-- 
-------------------------->
ish
http://www.ish.com.au
Level 1, 30 Wilson Street Newtown 2042 Australia
phone +61 2 9550 5001   fax +61 2 9550 4001