[Bugs] [Bug 1674412] New: listing a file while writing to it causes deadlock

[bugzilla at redhat.com]

https://bugzilla.redhat.com/show_bug.cgi?id=1674412

            Bug ID: 1674412
           Summary: listing a file while writing to it causes deadlock
           Product: GlusterFS
           Version: mainline
            Status: NEW
         Component: core
          Assignee: bugs at gluster.org
          Reporter: rgowdapp at redhat.com
                CC: bugs at gluster.org
  Target Milestone: ---
    Classification: Community



Description of problem:

Following test case was given by Nithya.
Create a pure replicate volume and enable the following options:
Volume Name: xvol
Type: Replicate
Volume ID: 095d6083-ea82-4ec9-a3a9-498fbd5f8dbe
Status: Started
Snapshot Count: 0
Number of Bricks: 1 x 3 = 3
Transport-type: tcp
Bricks:
Brick1: 192.168.122.7:/bricks/brick1/xvol-1
Brick2: 192.168.122.7:/bricks/brick1/xvol-2
Brick3: 192.168.122.7:/bricks/brick1/xvol-3
Options Reconfigured:
server.event-threads: 4
client.event-threads: 4
performance.parallel-readdir: on
performance.readdir-ahead: on
transport.address-family: inet
nfs.disable: on
performance.client-io-threads: off


Fuse mount using:
mount -t glusterfs -o lru-limit=500 -s 192.168.122.7:/xvol /mnt/g1
mkdir /mnt/g1/dirdd

>From terminal 1:
cd /mnt/g1/dirdd
while (true); do ls -lR dirdd; done

>From terminal 2:
while true; do dd if=/dev/urandom of=/mnt/g1/dirdd/1G.file bs=1M count=1; rm -f
/mnt/g1/dirdd/1G.file; done

On running this test, both dd and ls hang after some time.


Version-Release number of selected component (if applicable):


How reproducible:


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