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On 12/02/13 17:56, Brian Bockelman wrote: > > On Dec 2, 2013, at 7:15 PM, Matevz Tadel <[log in to unmask]> wrote: > >> Hi, >> >> As I mentioned in the "kXR_locate error messages on exported paths" thread on >> github, there were some "funny" things happening to me when doing "xrdfs ls" to >> various AAA services. >> >> There are, it turns out, two sources of problems: >> >> 1. Something to do with network configuration of slc5 nodes at UCSD. It all >> works ok at& SLAC (on slc5) and also at UCSD with slc6. Sigh, etc. The problem >> arises for all server versions (tried 3.3.3, 3.3.x, master) and it manifests >> slightly differently for 3.3.x clients and for clients from the master -- but it >> is always opening of the second connection that fails. Do the logs below help >> anybody to imagine what could be wrong? I somehow suspect ipv4 / ipv6 mess but I >> don't know enough about this to know how to really check this. >> >> 1a. Connecting with 3.3.3 client, error is "host not found": >> http://uaf-2.t2.ucsd.edu/~matevz/xrd/ls-fun/3.3.3-slc5--3.3.3-slc5.clog >> http://uaf-2.t2.ucsd.edu/~matevz/xrd/ls-fun/3.3.3-slc5--3.3.3-slc5.clogstrace >> >> 1b. Connecting with master client, error is "connection timeout" >> http://uaf-2.t2.ucsd.edu/~matevz/xrd/ls-fun/3.3.3-slc5--master-f19.clog >> http://uaf-2.t2.ucsd.edu/~matevz/xrd/ls-fun/3.3.3-slc5--master-f19.clogstrace > > You need "-f" with strace to actually see what's happening. I had this in but then it seemed to me that all socket operations are also visible without it. Here they are: http://uaf-2.t2.ucsd.edu/~matevz/xrd/ls-fun/3.3.3-slc5--3.3.3-slc5.clogstrace-f http://uaf-2.t2.ucsd.edu/~matevz/xrd/ls-fun/3.3.3-slc5--master-f19.clogstrace-f this is the one with connection timeout and goes on forever so it's truncated after a couple of failures. >> >> 2. xrootd-hdfs plugin does not support the ls operation. I confirmed this by >> running ls on UFL which is the only AAA US site that does not use hdfs. >> I'll investigate this further when I get to it. > > Indeed, something looks suspicious: > > [bbockelm@brian-test ~]$ xrdfs red-gridftp3.unl.edu 'ls /store/temp/foo' > [ERROR] Server responded with an error: [3011] Unable to locate /store/temp/foo; no such file or directory > > [bbockelm@brian-test ~]$ xrdfs red-gridftp3.unl.edu 'stat /store/temp' > Path: /store/temp > Id: 0 > Size: 4096 > Flags: 59 (XBitSet|IsDir|Offline|IsReadable|IsWritable) > > This used to work - perhaps we had a regression somewhere along the line? I don't know ... we are still running hadoop-0.20 on UCSD though. Matevz ######################################################################## Use REPLY-ALL to reply to list To unsubscribe from the XROOTD-DEV list, click the following link: https://listserv.slac.stanford.edu/cgi-bin/wa?SUBED1=XROOTD-DEV&A=1