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Correct, we don't support a writable cache because that's not what a cache is all about. Does the origin support writes? If so, we could potentially provide a cache passthrough option. Otherwise, if the readable and writable path differ, he could have run two proxies -- one caching for read access and a passthru proxy for writing then setup a redirect directive in the primary proxy (i.e. the one that will be initially used) to direct writes to the passthru proxy based on path. Andy On Thu, 1 Mar 2018, Fabrizio Furano wrote: > Hi, > > Mihai is trying to setup a small Pss machine that also works as a cache. > > For reading it seems to work fine, yet it stubbornly refuses to write files with > this error: > >> 180301 17:27:38 13788 XrdFileCache_Manager: debug Cache::Attach() root:[log in to unmask]:1094//eos/xdc/testing/hello.txt?&oss.asize=14&oss.lcl=1 location: <deferred open> >> 180301 17:27:38 13788 root.3008:20@xdc-test-fst1 ofs_fstat: fn=/eos/xdc/testing/hello.txt >> 180301 17:27:38 13788 root.3008:20@xdc-test-fst1 XrootdResponse: 0100 sending 46 data bytes; status=0 >> 180301 17:27:38 13788 root.3008:20@xdc-test-fst1 XrootdProtocol: 0100 req=write dlen=14 >> 180301 17:27:38 13788 root.3008:20@xdc-test-fst1 XrootdProtocol: 0100 fh=0 write 14@0 >> 180301 17:27:38 13788 root.3008:20@xdc-test-fst1 ofs_write: 14@0 fn=/eos/xdc/testing/hello.txt >> 180301 17:27:38 13788 ofs_write: root.3008:20@xdc-test-fst1 Unable to write /eos/xdc/testing/hello.txt; operation not supported >> 180301 17:27:38 13788 root.3008:20@xdc-test-fst1 XrootdProtocol: 0100 discarding 0 bytes >> 180301 17:27:38 13788 root.3008:20@xdc-test-fst1 XrootdResponse: 0100 sending err 3005: Unable to write /eos/xdc/testing/hello.txt; operation not supported >> 180301 17:27:38 13788 root.3008:20@xdc-test-fst1 XrootdProtocol: 0100 req=close dlen=0 >> 180301 17:27:38 13788 root.3008:20@xdc-test-fst1 ofs_close: use=1 fn=/eos/xdc/testing/hello.txt > > If we remove the directive pss.cachelib then writes work instead. > > Can anyone give us a clue please ? > > Thank you > Fabrizio and Mihai > > ######################################################################## Use REPLY-ALL to reply to list To unsubscribe from the XROOTD-L list, click the following link: https://listserv.slac.stanford.edu/cgi-bin/wa?SUBED1=XROOTD-L&A=1