[Bugs] [Bug 1618925] New: dht_create: no subvolume in layout

[bugzilla at redhat.com]

https://bugzilla.redhat.com/show_bug.cgi?id=1618925

            Bug ID: 1618925
           Summary: dht_create: no subvolume in layout
           Product: GlusterFS
           Version: mainline
         Component: dht2
          Severity: high
          Assignee: bugs at gluster.org
          Reporter: frostyplanet at gmail.com
                CC: bugs at gluster.org



Created attachment 1476753
  --> https://bugzilla.redhat.com/attachment.cgi?id=1476753&action=edit
gfapi log

Description of problem:

We have recently upgraded glusterfs from 3.7.6 to  3.10.12, sometimes creating
file using gfapi in a new directory fail (errno 5), but no error after
retrying.


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

glusterfs-3.10.12


How reproducible:

application log (timezone GMT+8):
------------------------------------------------

2018-08-18 18:05:05,333 DEBUG -52399312- Create new directory
[FS/rt/mbXx/service-log_0/1161baf2416c3b608ba06db7055b0e7b_171632304626615382.m]
on cluster [4] ((unknown file):0)(0036d13e7d3a93ee)
2018-08-18 18:05:05,371 CRITICAL -58525808- Failed to open cluster [4] object
[FS/rt/mbXx/service-log_0/1161baf2416c3b608ba06db7055b0e7b_171632304626615382.m/0003_2df00662a2ce11e8850b246e9631871a]
with mode [w]: [[Errno 5] Input/output error] (app:1461)(0036d13e7d3a93ee)
2018-08-18 18:05:05,703 DEBUG -58525808- Open cluster [4] file
[FS/rt/mbXx/service-log_0/1161baf2416c3b608ba06db7055b0e7b_171632304626615382.m/0003_2df00662a2ce11e8850b246e9631871a]
with mode [w] (app:1461)(0036d13e7d3a93ee)
2018-08-18 18:05:05,943 INFO -58525808- Rename file: cluster=4
src=FS/rt/mbXx/service-log_0/1161baf2416c3b608ba06db7055b0e7b_171632304626615382.m/0003_2df00662a2ce11e8850b246e9631871a
dst=FS/rt/mbXx/service-log_0/1161baf2416c3b608ba06db7055b0e7b_171632304626615382.m/0003
(app:1461)(0036d13e7d3a93ee)


error in gfapi
----------------------

[2018-08-18 10:05:05.338722] E [MSGID: 109011] [dht-common.c:7248:dht_create]
0-vol0-dht: no subvolume in layout for
path=/FS/rt/mbXx/service-log_0/1161baf2416c3b608ba06db7055b0e7b_171632304626615382.m/0003_2df00662a2ce11e8850b246e9631871a


Steps to Reproduce:
1. create new directory
2. create file under the directory

Actual results:

IO error happends

Expected results:

No error when creating file


Additional info:
-----------------

Volume Name: vol0
Type: Distributed-Replicate
Volume ID: 18e1c05d-570a-4c97-aa91-ef984881c4f2
Status: Started
Snapshot Count: 0
Number of Bricks: 36 x 3 = 108
Transport-type: tcp

Options Reconfigured:
locks.trace: false
client.event-threads: 6
cluster.self-heal-daemon: enable
performance.write-behind: True
transport.keepalive: True
cluster.rebal-throttle: lazy
server.event-threads: 4
performance.io-cache: False
nfs.disable: True
cluster.quorum-type: auto
network.ping-timeout: 120
features.cache-invalidation: False
performance.read-ahead: False
performance.client-io-threads: True
cluster.server-quorum-type: none
performance.md-cache-timeout: 0
performance.readdir-ahead: True

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