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Hi,

A xrootd cluster can work with a shared posix file system, typically GPFS or Lustre. In this setup, all xrootd servers have equal access to all files. So in the xrootd redirector configuration file, you should add a line

cms.dfs

see http://www.xrootd.org/doc/dev49/cms_config.htm#_Toc520504662 for detail

regards,
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Wei Yang  |  [log in to unmask]<mailto:[log in to unmask]>  |  650-926-3338(O)

From: <[log in to unmask]> on behalf of Geonmo Ryu <[log in to unmask]>
Date: Thursday, February 7, 2019 at 12:27 AM
To: xrootd-l <[log in to unmask]>
Subject: Setup XROOTD Server on shared filesystem.


Dear XROOTD experts,



I wonder if the xrootd server configuration can work on a shared file system.



We have two storage volumes of 350TB each.



As the number of working nodes in our cluster grows, we can not bother with bandwidth on two XRootD servers,



so we want to extend more xrootd servers.



However, we can not split the volumes to smaller right now due to lack of extra storage.



In this case, how do we work with two volumes on five or more XRootD servers?



I guess that it is possible to utilize the cache feature, but there is not enough information about the configuration file



So, we can not try it.



If you are an administrator running XRootD servers on a shared file system, please let me know your experience.



Regards,


--------------------------------------------------------------------------------------------------
Geonmo Ryu / ???

Korea Institute of Science and Technology Information (KISTI)
Global Science Experimental Data Hub Center (GSDC)
245 Daehak-ro, Yuseong-gu, Daejeon, 305-806, Republic of Korea
Tel :  +82-42-869-1639, +82-10-4337-9423
Mail : [log in to unmask] / [log in to unmask]
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