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<!-- keep this as a security measure: #uncomment if the subject should only be modifiable by the listed groups * Set ALLOWTOPICCHANGE = Main.TWikiAdminGroup,Main.CMSAdminGroup * Set ALLOWTOPICRENAME = Main.TWikiAdminGroup,Main.CMSAdminGroup #uncomment this if you want the page only be viewable by the listed groups # * Set ALLOWTOPICVIEW = Main.TWikiAdminGroup,Main.CMSAdminGroup --> ---+!! %TOPIC% %TOC% ---++ Symptoms Summary: %FORMFIELD{"Symptom summary"}% ---++ Occurrences At what times did this problem occur (used to estimate frequency): | 2009-05-11 | ---++ Observations SRM read requests from external sources keep hanging and timeout. Looking at the debug output reveals that the returned TURL contains a gridFTP door host name without domain extension: <pre> srmcp -2 -debug srm://t3se01.psi.ch:8443/srm/managerv2?SFN=//pnfs/psi.ch/cms/testing/derek file:////tmp/derek501 | grep "gsiftp://" Storage Resource Manager (SRM) Client version 2.0.9 Copyright (c) 2002-2008 Fermi National Accelerator Laboratory copying CopyJob, source = gsiftp://%RED%t3fs01:2811%ENDCOLOR%//pnfs/psi.ch/cms/testing/derek destination = file:////tmp/derek501 </pre> This happens consistently for certain fileservers, but not for all of them. The =/etc/hosts= file on an affected fileserver has an entry with a local name, only. dCache regrettably only does a local name resolution: <pre %FILESTYLE%> 192.33.123.41 t3fs01 # Added by DHCP </pre> ---++ Solution or Workaround Either one needs to comment the =/etc/hosts= entry out or modify it by adding a leading FQDN. Need to study how to convince DHCP to make the right entry automatically. Another possibility is to use a static network setup for the File servers. Probably anyhow a good idea. ---++ Monitoring for this condition <!-- #how can this condition be recognized automatically, if at all? --> -- Main.DerekFeichtinger - 11 May 2009
IssueForm
Affected Service
dCache SRM
Symptom summary
SRM returns a TURL without a domain extension
Reason Understood
yes
Solution Exists
yes
Obsolete
no
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Topic revision: r2 - 2009-12-12
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DerekFeichtinger
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