Re: My favorite question

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On Wed, Jul 27, 2011 at 3:05 AM, Fyodor Ustinov <ufm@xxxxxx> wrote:
> On 07/27/2011 01:24 AM, Gregory Farnum wrote:
>>
>> Hmm, I'm afraid I can't see anything useful in these logs right now --
>> just confusion!
>>
>> The only thing I can think of that might provide useful information
>> now is to turn off osd5, update its config file to have heavy
>> debugging information (debug osd = 20, at a minimum), and then start
>> the OSD back up again. Then we can see if pg 0.256 is still having any
>> issues (it is in the logs you sent me).
>>
>> If not I'll have to mark this as "Can't reproduce" and hope we see it
>> again from somebody with higher log levels on. :(
>> -Greg
>
> I started manual scrubbing on osd5 and got next message:
>
> 2011-07-27 11:38:30.360812   log 2011-07-27 11:38:28.540559 osd5
> 10.5.51.145:6803/19737 2842 : [ERR] 0.256 scrub stat mismatch, got 2196/2196
> objects, 0/0 clones, 9046200695/9046200817 bytes, 8834197/8834197 kb.
> 2011-07-27 11:38:30.360812   log 2011-07-27 11:38:28.540571 osd5
> 10.5.51.145:6803/19737 2843 : [ERR] 0.256 scrub 1 errors
>
> "Hmmm" I said to myself.
>
> stop osd5
> fsck -fy /dev/sdb1
>
> And got:
>
> Inode 230558734, i_blocks is 8, should be 16.  Fix? yes
> Inode 230559279, i_blocks is 8208, should be 8200.  Fix? yes
> Inode 230559410, i_blocks is 40, should be 32.  Fix? yes
> Inode 230559527, i_blocks is 24, should be 32.  Fix? yes
> Inode 231342174, i_blocks is 40, should be 32.  Fix? yes
> Inode 231342209, i_blocks is 24, should be 32.  Fix? yes
>
> Ups. Familiar message. :(
>
> I login to different node and got the same.
>
> Greg, I think to catch any errors no sense. 2.6.39 have broken ext4. I will
> try 3.0.0 (or 3.1.0) and tell about result.
Ah, I think that would explain the errors. We'll have to get better at
identifying such things!
-Greg
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