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Date:      Mon, 22 Oct 2012 09:06:24 +1100
From:      =?ISO-8859-1?Q?J=FCrgen_Weber?= <jurgen.weber@theiconic.com.au>
To:        freebsd-fs@freebsd.org
Subject:   Re: mfi0 timeout error zfs boot mount problem
Message-ID:  <508471E0.9010805@theiconic.com.au>
In-Reply-To: <50830EA3.6020001@theiconic.com.au>
References:  <508090E8.4010300@theiconic.com.au> <5081CE05.1010108@theiconic.com.au> <50830EA3.6020001@theiconic.com.au>

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This is still a problem for me, is anyone there? :)

I have tried the following at the bootime loader.

vfs.zfs.zil_disable="1"
vfs.zfs.prefetch_disable="1"
vfs.zfs.txg.timeout="5"

Any other suggestions on how to get this zpool to import and mount again?

Thanks

On 21/10/12 07:50, Jurgen Weber wrote:
> Hi
>
> Lastly, is there a way at boot time, some sysctl's or something I can 
> set to bring zfs to a minimalistic state? Turn off features, etc to 
> get this to mount?
>
> Any ideas appreciated.
>
> Thanks
>
> Jurgen
> On 20/10/2012 9:02 AM, Jurgen Weber wrote:
>> Guys
>>
>> Some more details on this, some insight would be greatly appreciated.
>>
>> As my day wore on trying to get this zpool to import or mount I have 
>> learnt a few things. I think over time this issue has came about as 
>> more and more data was added to the file systems.
>>
>> Some further details:
>>
>> Its a 8 disk raidz pool that the system boots from as well. The disk 
>> are all 2TB.
>> The server has 16GB Of RAM, I notcied the day before this happen the 
>> server was struggling with its RAM griding to a halt and dumping its 
>> RAM.
>> The issue is not hardware because I found another server (same one) 
>> swapped the harddrives out took another 8GB of RAM and I have the 
>> same problem.
>> The main data file systems have dedup and gzip compression on.
>>
>> I have booted from open/Oracle Solars 11 adn attempted to import and 
>> the Solaris live CD will not import either. In the Solaris system the 
>> disk detach from the system.
>>
>> I get the feeling that ZFS is hitting some root limit when attempting 
>> to mount and its not finishing the job.
>>
>> Thanks
>>
>> Jurgen
>>
>> On 19/10/2012 10:29 AM, Jürgen Weber wrote:
>>> Team
>>>
>>> I have googled around for a solution and I see a lot of posts about 
>>> firmware versions and patches for FreeBSD 8.*.
>>>
>>> I have a FreeBSD 9.1rc1 system, which was beta1 orginally and has 
>>> been running for months.
>>>
>>> Now it will not boot, I get the following:
>>>
>>> "Trying to mount root from zfs:tank/root [].....
>>> mfi0: COMMAND 0Xffffff8000cb83530 TIMEOUT AFTER xxx SECONDS
>>> (this just repeats).
>>>
>>> I have not seen this error before during normal runtime, _only_ 
>>> during boot.
>>>
>>> Originally when I had the problem I could boot off a USB stick 
>>> (9.1beta1 or rc1), run a 'zpool import -f tank' and it would work on 
>>> the livecd. Rebooting and the main system would work.
>>>
>>> This time this work around does not work for me. When I am on the 
>>> USB stick I can run a 'zpool import' and all of the disk are 
>>> recognised, the pool is recognised and the file system is healthy.
>>>
>>> The Card is a H700 PERC, with 12.10.3 firmware in a Dell R515.
>>> Running FreeBSD 9.1-RC1, latest zfs and zpool versions.
>>>
>>> I have tried disabling the cache (mfiutil cache xxx disable). I have 
>>> also gone into the Card settings and changed under advanced settings 
>>> "adaptive forward read" to "read only".
>>>
>>> Any help, appreciated.
>>>
>>> Thanks
>>>
>>
>

-- 
Jürgen Weber

Systems Engineer
IT Infrastructure Team Leader

THE ICONIC | E jurgen.weber@theiconic.com.au | www.theiconic.com.au




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