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Thanks for the answer Wei. Stephane. On 1/19/12 6:12 PM, Yang, Wei wrote: > Hi Stephane, > > Andy's statement described a model that is used by Babar (and may be by WT2 in the future), that is, a backend tape (or tape like) system holds all data, and disk are just frontend cache. So if a storage node with disk is down, other nodes will server the request from jobs by fetching the data from tape backend. This may not be the case for you. > > I think so far the method described in Patrick McGain's respond is probably the best option to drain a storage node. > > regards, > Wei Yang | [log in to unmask] | 650-926-3338(O) > > > On Jan 19, 2012, at 1:36 PM, Stephane Willocq wrote: > >> Hi Andy, >> >> I was interested in your answer: >> >> On 1/9/12 3:41 AM, Andrew Hanushevsky wrote: >>> P.S. The current model is that missing files from a faulty data server >>> would be automatically copied in on other servers when so requested. >>> That is a reasonable model is you assume that te ailure rate is >>> relatively small. >> >> You mention an automatic copy to other servers can be requested. How do >> we request this? >> >> >> Stephane. >> >> >>> On Sat, 7 Jan 2012, Doug Benjamin wrote: >>> >>>> Hello, >>>> >>>> Are there any xrootd commands to drain a faulty data server of files >>>> and distribute them across the >>>> rest of the data servers in the storage system. >>>> >>>> Thanks, >>>> >>>> Doug Benjamin >>>> >>>> ######################################################################## >>>> Use REPLY-ALL to reply to list >>>> >>>> To unsubscribe from the XROOTD-L list, click the following link: >>>> https://listserv.slac.stanford.edu/cgi-bin/wa?SUBED1=XROOTD-L&A=1 >>>> >> >> -- >> ----------------------------------------------------------------- >> Stephane Willocq Office (413) 545-0525 >> Department of Physics Fax (413) 545-0648 >> University of Massachusetts >> 710 North Pleasant St [log in to unmask] >> Amherst, MA 01003-9337 http://people.umass.edu/willocq >> ----------------------------------------------------------------- >> >> ######################################################################## >> Use REPLY-ALL to reply to list >> >> To unsubscribe from the XROOTD-L list, click the following link: >> https://listserv.slac.stanford.edu/cgi-bin/wa?SUBED1=XROOTD-L&A=1 > -- ----------------------------------------------------------------- Stephane Willocq Office (413) 545-0525 Department of Physics Fax (413) 545-0648 University of Massachusetts 710 North Pleasant St [log in to unmask] Amherst, MA 01003-9337 http://people.umass.edu/willocq ----------------------------------------------------------------- ######################################################################## Use REPLY-ALL to reply to list To unsubscribe from the XROOTD-L list, click the following link: https://listserv.slac.stanford.edu/cgi-bin/wa?SUBED1=XROOTD-L&A=1