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Hi Max, No, that shouldn't happen. What I was saying, is that you can have multiple transfer request in the queue because when they were added the file wasn't on disk. One of those transfers will satisfy all of the entries in the quueue. Andy On Sat, 16 Dec 2017, Fischer, Max (SCC) wrote: > Hi Andy, > > if I understand you correctly, two transfers for the same file may happen if the first does not finish before the second is attempted? > > Cheers, > Max > >> Am 15.12.2017 um 21:06 schrieb Andrew Hanushevsky <[log in to unmask]>: >> >> Hi Max, >> >> The issue here is that when the file was requested it wasn't found on disk. So, the copy was queued. However, before actually tranfering the file, the FRM checks if the file is already online. If so, the copy is skipped and the client is told the file is available. >> >> Andy >> >> On Fri, 15 Dec 2017, Fischer, Max (SCC) wrote: >> >>> Hi all, >>> >>> a new Tape buffer server recently started failing a lot of frm recalls because multiple `frm.xfr.copycmd in` were running for the same files. Judging from `frm_admin query xfrq`, from 6000 unique files queued in total, about 700 are queued more than once. >>> Is there any known reason for such a behaviour? Can we clean up the queue somehow? Or must copycmd be able to handle the same request multiple times? >>> >>> OS: Scientific Linux release 7.3 (Nitrogen) >>> xrootd: v4.7.1 >>> >>> Cheers, >>> Max >>> >>> >>> ######################################################################## >>> 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