ffs_copyonwrite panics

[Jeff Roberson]

On Sun, 23 May 2010, Roman Bogorodskiy wrote:

>  Jeff Roberson wrote:
>
>> On Tue, 18 May 2010, Roman Bogorodskiy wrote:
>>
>>> Hi,
>>>
>>> I've been using -CURRENT last update in February for quite a long time
>>> and few weeks ago decided to finally update it. The update was quite
>>> unfortunate as system became very unstable: it just hangs few times a
>>> day and panics sometimes.
>>>
>>> Some things can be reproduced, some cannot. Reproducible ones:
>>>
>>> 1. background fsck always makes system hang
>>> 2. system crashes on operations with nullfs mounts (disabled that for
>>> now)
>>>
>>> The most annoying one is ffs_copyonwrite panic which I cannot reproduce.
>>> The thing is that if I will run 'startx' on it with some X apps it will
>>> panic just in few minutes. When I leave the box with nearly no stress
>>> (just use it as internet gateway for my laptop) it behaves a little
>>> better but will eventually crash in few hours anyway.
>>
>> This may have been my fault.  Can you please update and let me know if it
>> is resolved?  There was both a deadlock and a copyonwrite panic as a
>> result of the softupdates journaling import.  I just fixed the deadlock
>> today.
>
> Tried today's -CURRENT and unfortunately the behaviour is still same.

Can you give me a full stack trace?  Do you have coredumps enabled?  I 
would like to have you look at a few things in a core or send it to me 
with your kernel.

Thanks,
Jeff

>
> Roman Bogorodskiy
>