[Bugs] [Bug 1447344] New: Failure reading from fuse dev causing aux mount failure in NetBSD

[bugzilla at redhat.com]

https://bugzilla.redhat.com/show_bug.cgi?id=1447344

            Bug ID: 1447344
           Summary: Failure reading from fuse dev causing aux mount
                    failure in NetBSD
           Product: GlusterFS
           Version: mainline
         Component: fuse
          Assignee: bugs at gluster.org
          Reporter: sunnikri at redhat.com
                CC: bugs at gluster.org



Regression tests failing with short read on fuse dev
test cases : tests/basic/quota_aux_mount.t and other quota TC have been failing
on netBSD:

glusterd log:

[2017-05-02 12:59:05.6N]:++++++++++ G_LOG:./tests/basic/quota_aux_mount.t:
TEST: 38 10 quota_object_hard_limit /test_dir ++++++++++
[2017-05-02 12:59:05.367012] E [MSGID: 106176]
[glusterd-quota.c:1947:glusterd_create_quota_auxiliary_mount] 0-management:
Failed to mount glusterfs client. Please check the log file /build/
install/var/log/glusterfs/quota-mount-patchy.log for more details [File exists]
[2017-05-02 12:59:05.368422] E [MSGID: 106528]
[glusterd-quota.c:2125:glusterd_op_stage_quota] 0-management: Failed to start
aux mount


Now checking corresponding mount logs
(/build/install/var/log/glusterfs/quota-mount-patchy.log)

[2017-05-02 12:59:04.6N]:++++++++++ G_LOG:./tests/basic/quota_aux_mount.t:
TEST: 32 gluster --mode=script --wignore volume quota patchy limit-objects
/test_dir 10 ++++++++++
[2017-05-02 12:59:04.587193] W [fuse-bridge.c:5060:fuse_thread_proc]
0-glusterfs-fuse: short read on /dev/fuse
[2017-05-02 12:59:04.587255] I [fuse-bridge.c:5153:fuse_thread_proc] 0-fuse:
unmounting /build/install/var/run/gluster/patchy_quota_limit/
[2017-05-02 12:59:04.587821] W [glusterfsd.c:1329:cleanup_and_exit]
(-->0x8050667 <glusterfs_sigwaiter+0xb7> at /build/install/sbin/glusterfs
-->0x804ea67 <cleanup_and_exit+0x8d> at /build/i
nstall/sbin/glusterfs ) 0-: received signum (15), shutting down
[2017-05-02 12:59:04.587861] I [fuse-bridge.c:5867:fini] 0-fuse: Unmounting
'/build/install/var/run/gluster/patchy_quota_limit/'.
[2017-05-02 12:59:04.598938] I [MSGID: 100030] [glusterfsd.c:2462:main]
0-/build/install/sbin/glusterfs: Started running /build/install/sbin/glusterfs
version  (args: /build/install/sbin/glu
sterfs --volfile-server localhost --volfile-id patchy -l
/build/install/var/log/glusterfs/quota-mount-patchy.log -p
/build/install/var/run/gluster/patchy_quota_limit.pid --client-pid -5 /bui
ld/install/var/run/gluster/patchy_quota_limit/)
[2017-05-02 12:59:04.600212] E [fuse-bridge.c:5588:init] 0-fuse: mountpoint
/build/install/var/run/gluster/patchy_quota_limit/ does not exist

>>> from code we have 
  fuse_thread_proc()
  ....
  res = sys_readv (priv->fd, iov_in, 2);
  if (res < sizeof (finh)) {
           gf_log ("glusterfs-fuse", GF_LOG_WARNING,
                   "short read on /dev/fuse");

  }
Will need to investigate further from  fuse +_NetBSD perspective

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