Many processes stuck in zfs

[Alexander Leidinger]

Quoting Borja Marcos <borjam at sarenet.es> (from Thu, 11 Mar 2010  
18:26:09 +0100):

> Of course CPUs have bugs, I don't doubt it. I was just wondering how  
> I coud reproduce the problem with a different hardware :) That's why  
> I said it was unlikely.
>
> Besides, such a low level fault should produce many more problems  
> than such a well defined failure mode, as far as I know.

In my case I had a 7.1 system which was running fine. After updating  
to 7.2 I got deadlocks after some minutes with UFS. Switching to ZFS  
for the main data partition extended the lifetime to 3-4 hours. After  
updating ZFS in 7-stable with the code from 8-stable this was extended  
to 6 hours (periodic daily triggered the problem faster), and after  
switching to exclusive locks instead of shared locks in ZFS the system  
survived a night with several jails running periodic daily (but I had  
to reboot in the morning because apache was not able to serve data  
anymore). Everything else was working correctly. I would say this was  
a very narrow problem case.

Bye,
Alexander.

-- 
Adult, n.:
	One old enough to know better.

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