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Wilko just told me that this won't work --- because your data server is still in the xrootd cluster and redirector will send you back to the data server that you want to drain. A slightly modify way will work: xrdcp file root://redirector//file.TMP use xrd to rename root://redirector//file.TMP to root://redirector//file regards, Wei Yang | [log in to unmask] | 650-926-3338(O) On Jan 12, 2012, at 12:15 PM, Yang, Wei wrote: > Hi Nate, > > You can use cms.space directive set the minimum required free space to, say 1000PB and restart cmsd/xrootd. Your redirector will then think that this data server run out of space and will not send future writing to it. After than you can drain your data server. > > Another way to do this is to set r/o in all.export > > regards, > Wei Yang | [log in to unmask] | 650-926-3338(O) > > > On Jan 12, 2012, at 11:46 AM, Nathan Yehle wrote: > >> Wei, >> >> Is there a way to drain an xrootd server without bringing it offline? (stopping xrootd/cmsd on a production server is not an option unfortunately) >> >> -Nate >> >> On Jan 9, 2012, at 3:04 AM, Yang, Wei wrote: >> >>> Here is another way to do this, on the "faulty" data sever (obviously, it can't be complete faulty, otherwise you can't login and do anything) >>> >>> stop xrootd/cmsd >>> find storage_root_path -type f | while read file; do >>> dstfile=`remove local_root from $file` >>> xrdcp $file root://your_redirector/$dstfile >>> done >>> >>> you can speed up the process by making a more sophisticated script using xprep, etc. >>> >>> regards, >>> Wei Yang | [log in to unmask] | 650-926-3338(O) >>> >>> >>> >>> >>> On Jan 9, 2012, at 12:41 AM, Andrew Hanushevsky wrote: >>> >>>> Hi Doug, >>>> >>>> The short answer is no. On the positive side, we will submit an ASCR >>>> proposal to allow that. >>>> >>>> Andy >>>> >>>> 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. >>>> >>>> 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 >>>>> >>>> >>>> ######################################################################## >>>> 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 >>> >>> ######################################################################## >>> 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 >> > > ######################################################################## > 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 ######################################################################## 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