[tahoe-lafs-trac-stream] [tahoe-lafs] #1976: SFTP+SSHFS hangs for second concurrent operation

[tahoe-lafs]

#1976: SFTP+SSHFS hangs for second concurrent operation
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     Reporter:  luckyredhot    |      Owner:  daira
         Type:  defect         |     Status:  assigned
     Priority:  normal         |  Milestone:  undecided
    Component:  code-frontend  |    Version:  1.10.0
   Resolution:                 |   Keywords:  sftp sshfs hang reliability
Launchpad Bug:                 |
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Comment (by luckyredhot):

 Ok, I've catched an issue.
 It happens when
 1. One write operation is in progress (I am constantly copying files to
 grid folder)
 2. Second operation tries to get listing/attributes. It usually happens
 not from the first time, but consequently running "ls" command causes all
 operations to freeze for long span. In my case I've got only 5 files in
 folder, but "ls" operation took 40 (!) seconds. It will last forever on
 hundreds of files.

 See attached logs. I've issued ls before ''[80576] LSTAT''

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Ticket URL: <https://tahoe-lafs.org/trac/tahoe-lafs/ticket/1976#comment:2>
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