Re: [MooseFS-users] maintenance

[Eugene D. <it...@da...>]

Dear Piotr,

I have small files, so 1 chunk is equal to 1 file. This means that I 
also miss a file in this case.

Currently using 2.0.43, but will update today.

26.01.2015 12:05, Piotr Robert Konopelko пишет:
>
> Hello Eugene,
>
> > 1) What maintenance mode does? What should happen when I switch it 
> on or off?
>
> It is described in "MooseFS User's Manual" - chapter 4.3. You can 
> obtain it at http://moosefs.com/documentation.html.
>
> > 2) Is there any way to force filesystem checks?
>
> What do you mean exactly? The "filesystem check" loop is going all the 
> time. When it ends, info is shown on CGI monitor and it starts over.
>
> > 3) chunk is unavailable error. sometimes, after fs check I receive a
>
> > message, that the chunk is unavailable.
>
> If you have missing chunk(s) in "All chunks state matrix", information 
> about specific chunks/files missing is shown after filesystem check 
> loop ends.
>
> > currently unavailable chunk 000000000017EA9E (inode: 249094 ; index: 0)
>
> >
>
> > I checked in fs structure and the chuck is really missed.
>
> > How this could happen usually? If the file was written successfully, 
> why it is missed now?
>
> Do you have only unavailable chunk, or also file?
>
> > Using latest stable CE edition. Linux, HDD fs is ext4.
>
> Which version exactly? On Thursday, 22nd January 2015 we released 
> MooseFS 2.0.48 as stable, please upgrade to 2.0.48.
>
> Since 2.0.43 there were some fixes which may be important in you case 
> (specifically regarding to missing chunks and no unavailable files).
>
> Can you send us some logs from master and this chunkserver, on which 
> you have missing chunk from period you were writing files and the 
> problem occured?
>
> -- 
>
> Best regards,
>
> Piotr Robert Konopelko
>
> MooseFS Technical Support Engineer | moosefs.com <http://moosefs.com>
>
> On Sunday, January 25, 2015 12:10:11 PM Eugene Diatlov wrote:
>
> > Hi everyone,
>
> >
>
> > 1) What maintenance mode does? What should happen when I switch it 
> on or
>
> > off?
>
> >
>
> > 2) Is there any way to force filesystem checks?
>
> >
>
> > 3) chunk is unavailable error. sometimes, after fs check I receive a
>
> > message, that the chunk is unavailable.
>
> >
>
> > currently unavailable chunk 000000000017EA9E (inode: 249094 ; index: 0)
>
> >
>
> > I checked in fs structure and the chuck is really missed.
>
> > How this could happen usually? If the file was written successfully, 
> why it is missed now?
>
> >
>
> > Using latest stable CE edition. Linux, HDD fs is ext4.
>
> >
>
> >
>

-- 
Best regards,
Head of R&D department
Eugene Diatlov
DataLink LLC
email: it...@da...
web: http://datalink.ua