Re: [Moosefs-users] Question about MooseFS metadata distribution/recovery

[Ricardo J. B. <ric...@da...>]

El Miércoles 14 Diciembre 2011, René Pfeiffer escribió:
> On Dec 14, 2011 at 1400 +0100, Michał Borychowski appeared and said:
> > No, but you can try with sth like:
> >
> > "find . -type f | xargs mfsfilerepair"
>
> I did that, and we're currently assessing the file system.
> I asked for the recursive option, because it is easier for operators to
> deal with these situations. Also a "--dry-run" option would be nice (just
> as rsync has), so mfsfilerepair can generate a preview before an admin
> decides to run the actual repair task.

Exactly my concern.

Whenever I get unavailable chunks (not many times fortunately) but I don't 
know which files they belong to, I do this:

find /path/to/mfs/mount -type f | xargs mfsfileinfo > /tmp/mfsfileinfo.log
grep -B2 "no valid copies" /tmp/mfsfileinfo.log

And then I mfsfilrepair only those files that have chunks with invalid copies.


But, I don't know before hand if the missing chunk will be zeroed or restored 
from another (maybe older) version, so a --dry-run would be more than 
welcome :)


Regards,
-- 
Ricardo J. Barberis
Senior SysAdmin / ITI
Dattatec.com :: Soluciones de Web Hosting
Tu Hosting hecho Simple!

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