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<!-- keep this as a security measure: * Set ALLOWTOPICCHANGE = Main.TWikiAdminGroup,Main.LCGAdminGroup * Set ALLOWTOPICRENAME = Main.TWikiAdminGroup,Main.LCGAdminGroup #uncomment this if you want the page only be viewable by the internal people #* Set ALLOWTOPICVIEW = Main.TWikiAdminGroup,Main.LCGAdminGroup --> KeyWords: _(see the KeyWords page for guidelines on what to put here.)_ ---+ Issues of our 1.9.3-3 dcache installation ---++ gPlazma problems Trying to debug an issue of failing phedex CMS exports. They all fail with authentication problems as indicated by the errors from SRM/FTS. My first suspicion is that the users who fail do not use real VOMS proxies. Therefore I also generated myself a naked grid proxy and started to test: To have a deeper look into the problem, I am executing srm requests against our dcache while following the gPlazma log, and stracing the process: From the UI <pre> srmls -l srm://storage01.lcg.cscs.ch:8443/srm/managerv2?SFN=/pnfs/lcg.cscs.ch/cms </pre> Every such event leaves in the =/var/log/d-cache/gPlazma-storage02Domain.log=: <pre %FILESTYLE%> Exception thrown by gplazma.authz.plugins.vorolemap.VORoleMapAuthzPlugin: java.lang.NullPointerException 22 Sep 2009 16:47:42 (gPlazma) [v2:srmLs:71788691 SRM-storage01] caught exception: </pre> Following the cell and its siblings for some sys calls with strace <pre> strace -e trace=open,stat64 -fp 4749 Process 4749 attached with 84 threads - interrupt to quit </pre> *every invocation of srmls with the non-VOMS-proxy resulted in the following outputs from strace* (sometimes there were additional files read, but always there was a SIGSEGV): <pre> [pid 6925] stat64("/opt/d-cache/etc/dcachesrm-gplazma.policy", {st_mode=S_IFREG|0444, st_size=3859, ...}) = 0 [pid 6925] stat64("/etc/grid-security/grid-vorolemap", {st_mode=S_IFREG|0444, st_size=42556, ...}) = 0 [pid 6925] --- SIGSEGV (Segmentation fault) @ 0 (0) --- </pre> - Main.DerekFeichtinger - 2009-09-22
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Topic revision: r1 - 2009-09-22
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DerekFeichtinger
LCGTier2
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