Re: [Moosefs-users] Invalid copies of chunks

[Steve W. <st...@pu...>]

Hi Michal,

Thanks for your response.  It looks like all the invalid chunks 
(originally 29 of them) contained reserved files (files in the Trash?).  
Yesterday MooseFS reported only 5 invalid chunks so it looks like these 
chunks are being cleaned up automatically as the files they contain are 
expired and deleted from the Trash.  So, I think I'll just wait this 
weekend and see if they all disappear.

Steve

On 09/23/2011 04:25 AM, Michał Borychowski wrote:
> Hi Steve!
>
> The "realpath" function resolves the real path to the file - we are not sure
> why it may return an error - probably some path fragment is a symbolic link
> to a non-existing object.
>
> I send mfstools.c which will output more debug information in case of this
> function. Please put the file in the "mfsmount" folder and issue "make ;
> make install" commands and later run "mfsfilerepair" again. And give us some
> feedback what you get.
>
>
> Kind regards
> Michał Borychowski
> MooseFS Support Manager
> _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _
> Gemius S.A.
> ul. Wołoska 7, 02-672 Warszawa
> Budynek MARS, klatka D
> Tel.: +4822 874-41-00
> Fax : +4822 874-41-01
>
>
> -----Original Message-----
> From: Steve Wilson [mailto:st...@pu...]
> Sent: Tuesday, September 20, 2011 2:52 PM
> To: Michał Borychowski
> Cc: moo...@li...
> Subject: Re: [Moosefs-users] Invalid copies of chunks
>
> Hi Michal,
>
> I've already run mfsfilerepair on the files in these chunks.  Most of
> the corrupted files are temporary files that must have been open at the
> time of the changeover.  I wouldn't mind just deleting the files, if I
> could.  Some of the files, however, give a "realpath error" when I
> attempt to run mfsfilerepair:
>
>       mfsfilerepair /net/jiang/fguo/.cache/indicator-applet-session.log
>       /net/jiang/fguo/.cache/indicator-applet-session.log: realpath error
>
> Is there any way to clean up these chunks if mfsfilerepair fails?
> Again, I wouldn't mind losing files like the indicator-applet-session.log...
>
> Thanks,
>
> Steve
>
> On 09/20/2011 04:18 AM, Michał Borychowski wrote:
>> Hi!
>>
>> You need to run mfsfilerepair on the files belonging to these chunks.
>>
>>
>>
>> Kind regards
>> Michał Borychowski
>> MooseFS Support Manager
>> _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _
>> Gemius S.A.
>> ul. Wołoska 7, 02-672 Warszawa
>> Budynek MARS, klatka D
>> Tel.: +4822 874-41-00
>> Fax : +4822 874-41-01
>>
>>
>>
>>
>> -----Original Message-----
>> From: Steve Wilson [mailto:st...@pu...]
>> Sent: Monday, September 19, 2011 4:11 PM
>> To: moo...@li...
>> Subject: [Moosefs-users] Invalid copies of chunks
>>
>> Hi,
>>
>> Last week I swapped two MooseFS servers so that server A previously
>> running mfs-master started running mfs-metalogger and server B
>> previously running mfs-metalogger started running mfs-master.  Somehow
>> in the process I ended up with metadata_ml.mfs.back and
>> metadata.mfs.back files that had problems preventing "mfsmetarestore -a"
>> from working correctly.  So I went to a previous metadata file and
>> applied changelogs manually.
>>
>> Now I have 29 chunks that have no valid copies and messages like the
>> following appear in my logs:
>>
>> Sep 18 06:15:04 noro mfsmaster[9008]: chunk 000000000568DC8C has only
>> invalid copies (2) - please repair it manually
>> Sep 18 06:15:04 noro mfsmaster[9008]: chunk 000000000568DC8C_00000001 -
>> invalid copy on (128.210.48.90 - ver:00000002)
>> Sep 18 06:15:04 noro mfsmaster[9008]: chunk 000000000568DC8C_00000001 -
>> invalid copy on (128.210.48.88 - ver:00000002)
>>
>> So my question is: how should I proceed to repair these chunks manually
>> as suggested by the log message?
>>
>> Thanks!
>>
>> Steve
>>

-- 
Steven M. Wilson, Systems and Network Manager
Markey Center for Structural Biology
Purdue University
(765) 496-1946