[tahoe-lafs-trac-stream] [Tahoe-LAFS] #2053: make "tahoe backup" avoid "piling up" if the backup job takes longer than the period

[Tahoe-LAFS]

#2053: make "tahoe backup" avoid "piling up" if the backup job takes longer than
the period
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     Reporter:  zooko        |      Owner:  daira
         Type:  enhancement  |     Status:  new
     Priority:  normal       |  Milestone:  undecided
    Component:  unknown      |    Version:  1.10.0
   Resolution:               |   Keywords:  tahoe-backup
Launchpad Bug:               |
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Comment (by zooko):

 We've been assuming that the user is backing up the ''same'' directory
 multiple times. In that case it makes sense to abort or delay the second
 backup until the first one completes. But, in #2285, a real live user is
 hitting a bug because he's running `tahoe backup` concurrently on two
 ''different'' directories. That use case, which we hadn't apparently
 previously considered, should probably not cause one of the backups to
 wait until the other backup is completely finished before it begins!

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Ticket URL: <https://tahoe-lafs.org/trac/tahoe-lafs/ticket/2053#comment:3>
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