Re: Reiser4 Oops on vanilla 2.6.37.2

[reiserfs-devel@vger.kernel.org]

On 05/03/11 22:40, Edward Shishkin wrote:
> On 03/05/2011 03:29 PM, Eddie Chapman wrote:
>> Hello,
>
> Hello.

Thanks for the prompt reply :)

>
>>
>> Firstly many thanks for the brilliant work being put into reiser4.
>>
>> Been using reiser4 for about 10 days or so on two software raid6 devices
>> containing lots of imap mail directories. One partition has about 55GB
>> mail in total, the other only about 4GB.
>>
>> So far so good with no major problems until this morning, when the Oops
>> below (scroll down to bottom of mail) happened. The system continued
>> functioning with no apparent data loss except load average rose to 24
>> within about 30 secs of the Oops and continued to rise steadily until
>> system became unresponsive after 3-4 hrs with load average at 1189.
>>
>> This is a Centos 5.5 64 bit box with vanilla kernel.org 2.6.37.2 and
>> reiser4-for-2.6.37.patch
>>
>> I have both the raid md devices mounted as reiser4 with
>> noatime,nodiratime
>>
>> I notice this Oops reported here and Edward's patch to address the
>> problem:
>> http://www.spinics.net/lists/reiserfs-devel/msg02648.html
>>
>> Searching through reiser4-for-2.6.37.patch it seems that patch is in
>> there, but I still got the Oops.
>
> This is another problem.

Aaah yes you're right, I just saw jbd2__journal_start and 
ext4_journal_start_sb in both Oops but didn't look further.

>
>>
>> Similarly to the previous case, this box is using ext4 for all the other
>> filesystems.
>>
>> If another patch is not possible in the near future would downgrading the
>> other filesystems to ext3 be a temporary workaround for this issue?
>
> I have attached a temporal workaround, it should help.
> Note, that I didn't test this patch: I'll be able to do it
> at the end of weekends.

Many thanks, I will apply it tonight and report back.

Eddie