zfs filesystem problem
jurgen at ish.com.au
Tue Jun 8 04:47:36 UTC 2010
I was able to reboot this machine last night which solved the immediate
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:
>>> 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
> URL to retrieve snapshots: http://bit.ly/aLoXXV
> Good Luck!,
>> How about scrub ?
>> And which size of your pools and how many place used by data+snapshots?
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