Hi again, I'm again running into trouble. I must be doing something that is very obviously wrong, but I just can't figure out what :-( This is the config I'm using: all.manager pktw34.phy.tu-dresden.de 3121 all.role manager if pktw34.phy.tu-dresden.de all.role server if pktf*.phy.tu-dresden.de olb.allow host pktf*.phy.tu-dresden.de all.export /scratch/users/petzold/testdata all.adminpath /scratch/users/petzold/xrdadmin xrootd.fslib /scratch/users/petzold/opt/xrootd/lib/libXrdOfs.so xrootd.async off all.trace all The output of the olbd and xrootd on the redirector machine is below. The error message of the obld is: Unable to accept TCP connection from pktw34.phy.tu-dresden.de; permission denied xrootd error message: 071120 17:44:01 2350 odc_Manager: Connected to pktw34.phy.tu-dresden.de 071120 17:44:01 2350 odc_GetLine: Unable to read request; connection reset by peer I'm using dev version 20071101-0808p1 on SL5 gcc 4.1.1 Any ideas? Cheers, Andreas 071120 17:43:57 001 Scalla is starting. . . Copr. 2007 Stanford University, xrd version 20071101-0808p1 Config using configuration file xrootd.cfg ++++++ olbd [log in to unmask] initialization started. =====> all.adminpath /scratch/users/petzold/xrdadmin Config maximum number of connections restricted to 1024 Copr. 2006 Stanford University/SLAC olbd. ++++++ [log in to unmask] phase 1 initialization started. =====> all.manager pktw34.phy.tu-dresden.de 3121 =====> all.role manager if pktw34.phy.tu-dresden.de =====> all.role server if pktf*.phy.tu-dresden.de =====> olb.allow host pktf*.phy.tu-dresden.de =====> all.adminpath /scratch/users/petzold/xrdadmin ------ [log in to unmask] phase 1 manager initialization completed. ++++++ [log in to unmask] phase 2 manager initialization started. Config round robin scheduling in effect. ------ [log in to unmask] phase 2 manager initialization completed.. ------ olbd [log in to unmask]:3121 initialization completed. 071120 17:44:01 001 XrdAccept: Unable to accept TCP connection from pktw34.phy.tu-dresden.de; permission denied 071120 17:44:05 001 XrdAccept: Unable to accept TCP connection from pktw34.phy.tu-dresden.de; permission denied 071120 17:44:00 001 Scalla is starting. . . Copr. 2007 Stanford University, xrd version 20071101-0808p1 Config using configuration file xrootd.cfg ++++++ xrootd [log in to unmask] initialization started. =====> all.adminpath /scratch/users/petzold/xrdadmin Config maximum number of connections restricted to 1024 Copr. 2007 Stanford University, xrootd version 2.9.0 build 20071101-0808p1 ++++++ xrootd protocol initialization started. =====> all.export /scratch/users/petzold/testdata =====> xrootd.fslib /scratch/users/petzold/opt/xrootd/lib/libXrdOfs.so =====> xrootd.async off Config warining: asynchronous I/O has been disabled! Config warning: 'xrootd.seclib' not specified; strong authentication disabled! Copr. 2007 Stanford University, Ofs Version 20071101-0808p1 ++++++ File system initialization started. =====> all.role manager if pktw34.phy.tu-dresden.de =====> all.role server if pktf*.phy.tu-dresden.de ++++++ Configuring manager role. . . =====> all.manager pktw34.phy.tu-dresden.de 3121 =====> all.adminpath /scratch/users/petzold/xrdadmin Config 1 manager(s) started. Config effective xrootd.cfg ofs configuration: ofs.role manager ofs.fdscan 9 120 1200 ofs.maxdelay 60 ofs.trace 0 ------ File system manager initialization completed. Copr. 2007, Stanford University, oss Version 20071101-0808p1 ++++++ Storage system initialization started. =====> all.export /scratch/users/petzold/testdata Config effective xrootd.cfg oss configuration: oss.alloc 0 0 0 oss.cachescan 600 oss.compdetect * oss.fdlimit 512 1024 oss.maxdbsize 0 oss.trace 0 oss.xfr 1 9437184 30 10800 oss.memfile off max 263989248 oss.defaults r/w nocheck nodread nomig norcreate nostage oss.path /scratch/users/petzold/testdata r/w nocheck nodread nomig norcreate nostage ------ Storage system initialization completed. Config warning: 'xrootd.prepare logdir' not specified; prepare tracking disabled. Config exporting /scratch/users/petzold/testdata ------ xrootd protocol initialization completed. ------ xrootd [log in to unmask]:1094 initialization completed. 071120 17:44:01 2350 odc_Manager: Connected to pktw34.phy.tu-dresden.de 071120 17:44:01 2350 odc_GetLine: Unable to read request; connection reset by peer 071120 17:44:01 2350 odc_Manager: Unable to receive msg from pktw34.phy.tu-dresden.de; connection reset by peer 071120 17:44:05 2350 odc_Manager: Connected to pktw34.phy.tu-dresden.de 071120 17:44:05 2350 odc_GetLine: Unable to read request; connection reset by peer 071120 17:44:05 2350 odc_Manager: Unable to receive msg from pktw34.phy.tu-dresden.de; connection reset by peer