Hi Andy,
Ok, I see from the logs that it does happen occasionally (i.e. a handful
of times over the past week on both redirectors at SLAC), but it sounds
like it is handled gracefully. This is a new message that you added at
some point since the last production build (20040907-0403), is that correct?
Pete
On Mon, Mar 28, 2005 at 11:41:58AM -0800, abh wrote:
> Hi Pete,
>
> When xrootd sends a request to the olbd it expects a reply in about 5
> seconds (tunable via a config parameter). If no reply is received, the
> message comes out and the client is asked to wait and come back later. This
> gives the xrootd time to find another olbd, if necessary.
>
> Andy
>
> ----- Original Message -----
> From: "Peter Elmer" <[log in to unmask]>
> To: <[log in to unmask]>
> Sent: Monday, March 28, 2005 7:46 AM
> Subject: "xxx got no response" message in redirector logs
>
>
> > Hi Andy,
> >
> > I just played the game of removing all normal messages from the
> >redirector
> >logs to see what remains. On one of the redirectors at SLAC there was one
> >message which I didn't recognize:
> >
> >bbr-olb04> cat /var/adm/xrootd/logs/xrdlog | grep -v "asked to wait" |
> >grep -v redirected | grep -v login | grep -v " disc " | grep -v "xrootd
> >protocol anchor trim done"
> >050328 00:00:00 059 (c) 2004 Stanford University/SLAC xrd version
> >20050321-0425_dbg
> >050328 02:14:08 097 odc_Locate: polci.3440:169@noma0080 got no response
> >from bbr-rdr04
> >path=/store/PR/R12/AllEvents/0002/42/12.3.4e/AllEvents_00024239_12.3.4eV00_C14.2.0bV01.01.root
> >bbr-olb04>
> >
> > The full history for this client process is in (a) below. It _looks_ like
> >the client was subsequently properly redirected for that file (and he came
> >back to ask for another file 21 seconds later, so the application didn't
> >exit with some error either). What does the "got no response from
> >bbr-rdr04"
> >message mean?
> >
> > Pete
> >
> >(a)
> >
> >bbr-olb04> grep "polci.3440:169@noma0080" /var/adm/xrootd/logs/xrdlog
> >050328 01:15:09 091 XrootdXeq: polci.3440:169@noma0080 login
> >050328 01:15:09 091 odc_Locate: polci.3440:169@noma0080 redirected to
> >kan024.sla
> >c.stanford.edu:1094 by bbr-rdr04
> >path=/store/PRskims/R12/14.4.0c/BRecoToDDstar/0
> >1/BRecoToDDstar_0164.01.root
> >050328 01:15:10 091 odc_Locate: polci.3440:169@noma0080 redirected to
> >kan038.sla
> >c.stanford.edu:1094 by bbr-rdr04
> >path=/store/PRskims/R12/14.4.0c/BRecoToDDstar/0
> >1/BRecoToDDstar_0164.02HUBC.root
> >050328 01:15:10 091 odc_Locate: polci.3440:169@noma0080 asked to wait 5 by
> >bbr-r
> >dr04
> >path=/store/PR/R12/AllEvents/0002/42/12.4.0g/AllEvents_00024299_12.4.0gV01_
> >C14.2.0bV00.01.root
> >050328 01:15:15 091 odc_Locate: polci.3440:169@noma0080 redirected to
> >kan031.sla
> >c.stanford.edu:1094 by bbr-rdr04
> >path=/store/PR/R12/AllEvents/0002/42/12.4.0g/Al
> >lEvents_00024299_12.4.0gV01_C14.2.0bV00.01.root
> >050328 02:14:08 097 odc_Locate: polci.3440:169@noma0080 got no response
> >from bbr
> >-rdr04
> >path=/store/PR/R12/AllEvents/0002/42/12.3.4e/AllEvents_00024239_12.3.4eV0
> >0_C14.2.0bV01.01.root
> >050328 02:14:13 029 odc_Locate: polci.3440:169@noma0080 redirected to
> >kan035.sla
> >c.stanford.edu:1094 by bbr-rdr04
> >path=/store/PR/R12/AllEvents/0002/42/12.3.4e/Al
> >lEvents_00024239_12.3.4eV00_C14.2.0bV01.01.root
> >050328 04:20:34 097 odc_Locate: polci.3440:169@noma0080 redirected to
> >kan005.sla
> >c.stanford.edu:1094 by bbr-rdr04
> >path=/store/PR/R12/AllEvents/0002/43/12.4.0g/Al
> >lEvents_00024343_12.4.0gV01_C14.2.0bV01.01.root
> >050328 04:53:36 032 XrootdXeq: polci.3440:169@noma0080 disc 3:38:27
> >bbr-olb04>
> >
-------------------------------------------------------------------------
Peter Elmer E-mail: [log in to unmask] Phone: +41 (22) 767-4644
Address: CERN Division PPE, Bat. 32 2C-14, CH-1211 Geneva 23, Switzerland
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