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	Hi Wilko and Andy,

On Tuesday 26 June 2007 17:23:22 Wilko Kroeger wrote:
> Hello Andreas
>
> I think you have to specify a cache system.
>
> try to add:
> oss.cache /export/gka1900/babar10/kanga/cache0
> oss.path /store inplace
> oss.path /prod inplace
>
> In this case (inplace) the files are not put into the cache.
> (The cache dir must exists)
>
> I think in the new version the configuration of the path should be easier
> but I have to check it as i am not quite sure if Andys improvements made
> it into the latest production release.

this did the trick! Now we are able to write through the redirector.

I'd not call this config straightforward :-). Hopefully, the bug or feature 
that forces us to configure the cache file system even if we don't use it can 
be fixed in later versions.

	Cheers,

		Andreas


>
> Cheers,
>     Wilko
>
> On Tue, 26 Jun 2007, Andreas Petzold wrote:
> > 	Hi Wilko and Andy,
> >
> > On Friday 22 June 2007 17:11:44 Wilko Kroeger wrote:
> >> Hello Andreas
> >>
> >> You should just need
> >> olb.path w /store
> >> in the config for the redirector.
> >>
> >> You can checkout the configuration used at slac:
> >> # redirector-config
> >> http://www.slac.stanford.edu/~wilko/xrd/xrootd.cf_rdr
> >>
> >> # dataserver config
> >> http://www.slac.stanford.edu/~wilko/xrd/xrootd.cf_srv
> >>
> >> Which xrootd version are you using?
> >> The latest productions version 20070321-1251p1 makes the configuration a
> >> little bit easier.
> >
> > we still haven't gotten it to work :-(. We've switched to the latest
> > production version on one of our dataservers, but now the olb on the
> > dataserver complains that there are no writable file systems.
> >
> > 070626 15:40:54 001 [log in to unmask] phase 1 server
> > initialization suceeded.
> > 070626 15:40:54 001 [log in to unmask] phase 2 server
> > initialization started.
> > 070626 15:40:54 001 olb_Meter: Warning! No writable filesystems found;
> > write access and staging prohibited.
> > 070626 15:40:54 001 [log in to unmask] phase 2 server
> > initialization completed.
> > 070626 15:40:54 001 olbd [log in to unmask]:54571 initialization
> > completed.
> >
> > The config we are using on this sever looks like this:
> >
> > all.manager l01-001-110.gridka.de 3121
> > all.role manager if l01-001-110.gridka.de
> > all.role server if f01*.gridka.de
> >
> > olb.path r /store
> > olb.path w /prod
> > olb.port 3121
> > olb.sched cpu 100
> >
> > oss.alloc * * 80
> > oss.fdlimit * max
> > oss.localroot /export/gka1900/babar10/kanga/EventStore
> >
> > xrd.protocol xrootd *
> >
> > xrootd.async off
> > xrootd.chksum crc32 /home/xrootd/bin/getCRC32.sh
> > xrootd.export /prod
> > xrootd.export /store
> > xrootd.fslib /home/xrootd/software/gpfs/current/lib/libXrdOfs.so
> > xrootd.monitor all dest files info user babar2:9930
> >
> > The /prod and /store areas are actually on the same file system:
> >
> > ls -l /export/gka1900/babar10/kanga/EventStore
> > total 64
> > drwxrwxr-x  5 babaradm babar 32768 Jun 26 14:32 prod
> > drwxrwxr-x  7 babaradm babar 32768 Apr 16 09:56 store
> >
> > The user that is running xrootd belongs to the group 'babar' so we don't
> > think it is a permissions problem.
> >
> > 	Cheers,
> >
> > 		Florian,
> > 		Jan Erik,
> > 		Andreas
> >
> >> Cheers,
> >>     Wilko
> >>
> >> On Fri, 22 Jun 2007, Andreas Petzold wrote:
> >>> 	Hi,
> >>>
> >>> I have a redirector and a few dataservers. The servers export a file
> >>> system /prod with write permissions:
> >>>
> >>> olb.path r /store
> >>> olb.path w /prod
> >>> olb.port 3121
> >>> olb.sched cpu 100
> >>> olb.subscribe l01-001-110.gridka.de
> >>> olb.wait
> >>>
> >>> ofs.redirect target
> >>>
> >>> oss.alloc * * 80
> >>> oss.fdlimit * max
> >>> oss.localroot /home/xrootd/disk
> >>>
> >>> xrd.protocol xrootd *
> >>>
> >>> xrootd.async off
> >>> xrootd.chksum crc32 /home/xrootd/bin/getCRC32.sh
> >>> xrootd.export /prod
> >>> xrootd.export /store
> >>>
> >>> No I have the following problem. I want to copy a file to the server
> >>> pool, but the redirector claims that no server is available for writing
> >>> the file:
> >>>
> >>> xrdcp -d 2 ap_skims.lst root://babar.gridka.de:1094//prod/
> >>> [snip]
> >>> 070622 15:42:19 10305 Xrd: SendGenCommand: Server declared: No servers
> >>> are available to write the file.(error code: 3005)
> >>>
> >>> Interestingly enough, I seem to be able to delete files from the
> >>> servers via xrootd.
> >>>
> >>> How should I configure the dataservers so that I'm able to write to the
> >>> through the redirector?
> >>>
> >>> 	Cheers,
> >>>
> >>> 		Andreas