Tracker cannot find a file even if it is present on the devices
dinesh.gadge at gmail.com
Thu Mar 6 05:00:03 UTC 2008
Just to update the list ..
The problem was a programming goof-up on my part .. The files were indeed
there .. but somehow ended up in the wrong domain ...
A few corrections .. and everything worked like magic !
Thanks for the initiative to help though !
On Thu, Feb 28, 2008 at 2:02 AM, dormando <dormando at rydia.net> wrote:
> First I've heard of this.
> Any chance you could send the list (or me privately) the some of the
> rows from your database?
> SELECT * FROM file WHERE fid = brokenfid;
> SELECT * FROM file_on WHERE fid = brokenfid;
> maybe what's in domain, devices tables. devices would be more important.
> I suspect there might be no file_on rows associated with it, or it's
> failing the paths test somehow.
> You can try fetching the key with the 'noverify=1' option set and see if
> it returns paths (that may not work). By default mogilefs will try a
> HEAD request against the storage node for each path, and filter by what
> paths actually work. This is even probably a better suggestion to test
> than sending me parts of your database.
> Dinesh Gadge wrote:
> > Hello everybody,
> > I am using the ruby mogilefs-client library to interact with my mogilefs
> > installation.
> > It has happened on a few occasions that after storing a file with a
> > particular key, tracker does not recognize the key, and returns nil on
> > using
> > get_file_data(key)
> > where key is the key of that file.
> > This is an irreproducible [and hence an annoying :( ] problem [at least
> > for me].
> > When I checked up, the file had a correct entry in the db, with the
> > correct key and devids.
> > On checking up the /var/mogdata directory for the corresponding devices,
> > the file was present.
> > Still, it seems, the tracker is unable to find the file using that key.
> > I have tried it with the perl client too, even it gives an 'undef' on
> > asking for the file using get_file_data with the corresponding key.
> > I have tried 'list_keys' on both ruby and perl client .. and the result
> > does not have any entry for the given key.
> > My question is .. is this a known issue ?
> > or is it something I experienced randomly ? (on more-than-one occasions
> > though)
> > --
> > Regards,
> > Dinesh
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