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Hi everyone, I started to take a look at xrootd ceph plugin with version 4.10.1, since I'd like to understand if we can use ceph rbd as backend for an xcache instance. So, first of all, is it supported? With a blind shot I tried using a basic local setup and the cache configuration here(*). With a xrdcp I do not get errore, but the cache is not creating the file in the pool, with this error (**). Shooting in the dark again, I would say that this is related to this (***). This is everything I have so far, can you help me understanding if it is possible? And in case no, do you have any suggested solution here? Thanks, Diego (*) xrootd.trace all ofs.trace dump xrd.trace debug cms.trace debug sec.trace debug pfc.trace dump oss.trace dump all.export / all.role server xrd.port 32294 ofs.osslib libXrdPss.so pss.cachelib libXrdFileCache.so pfc.osslib /lib64/libXrdCeph.so diego@diegopool pss.origin localhost:1094 pfc.diskusage 0.8 0.9 pfc.ram 1g pfc.blocksize 512k pfc.prefetch 0 (**) 191030 09:49:26 236384 root.236560:34@localhost XrootdProtocol: 0100 open rat /test.txt? ceph_stat: /test.txt.cinfo 191030 09:49:26 236384 XrdFileCache_Manager: info Cache::Attach() root://u34@localhost:1094//test.txt?pss.tid=root.236560:34@localhost&oss.lcl=1 191030 09:49:26 236384 XrdFileCache_Manager: debug Cache::GetFile /test.txt, io 0x7f22b0003960 ceph_stat: /test.txt.cinfo 191030 09:49:26 236384 XrdFileCache_IO: debug IOEntireFile::initCachedStat get stat from client res = 0, size = 10 root://u34@localhost:1094//test.txt?p ss.tid=root.236560:34@localhost&oss.lcl=1 191030 09:49:26 236384 XrdFileCache_File: dump File::Open() open file for disk cache /test.txt ceph_stat: /test.txt ceph_stat: /test.txt.cinfo *191030 09:49:26 236384 XrdFileCache_File: error File::Open() Create failed , err_code=95, err_str=Operation not supported /test.txt* 191030 09:49:26 236384 XrdFileCache_File: debug File::~File() ended, prefetch score = 1 /test.txt 191030 09:49:26 236384 XrdFileCache_IO: debug IOEntireFile::~IOEntireFile() 0x7f22b0003960 root://u34@localhost:1094//test.txt?pss.tid=root.236560:34@lo calhost&oss.lcl=1 191030 09:49:26 236384 XrdFileCache_Manager: error Cache::Attach() Failed opening local file, falling back to remote access root://u34@localhost:1094//t est.txt?pss.tid=root.236560:34@localhost&oss.lcl=1 (***) https://github.com/xrootd/xrootd-ceph/blob/master/src/XrdCeph/XrdCephOss.cc#L166 ######################################################################## 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