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Hello, I am using several xrootd servers as front ends to distributed Lustre filesystem. The 3 servers get data from Lustre client via mounted Lustre FS. Right now we are seeing request sizes of 256k. Would like to increase it to 1M if possible. Most of the access is read only but we do have a read/write use case. Also the xrootd data server when it started up I saw this line in the xrootd log - " Config asynchronous I/O has been disabled!" Here is my configuration file - all.sitename sPHENIX xrd.port 1094 all.export /sphenix/lustre01/sphnxpro all.role server all.role manager if xrdsphenix01.rcf.bnl.gov xrdsphenix02.rcf.bnl.gov all.manager xrdsphenix01.rcf.bnl.gov:1213 all.manager xrdsphenix02.rcf.bnl.gov:1213 cms.allow host xrdsphenix01.rcf.bnl.gov cms.allow host xrdsphenix02.rcf.bnl.gov cms.allow host dcsphdoor01.rcf.bnl.gov cms.allow host dcsphdoor02.rcf.bnl.gov cms.allow host sphnxrootd01.sdcc.bnl.gov xrootd.seclib libXrdSec.so sec.protocol sss -s /etc/xrootd/sss.keytab_sphenix.grp ofs.authorize acc.audit deny acc.authdb /etc/xrootd/auth_file.sphenix acc.authrefresh 60 ofs.authorize 1 xrd.network keepalive kaparms 10m,1m,5 xrd.timeout idle 60m xrootd.trace request response http.trace request response Thank you in advance. Regards, Doug Benjamin ######################################################################## 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