[Bugs] [Bug 1231334] New: Gluster native client hangs on accessing dirty file in disperse volume
bugzilla at redhat.com
bugzilla at redhat.com
Fri Jun 12 17:41:58 UTC 2015
https://bugzilla.redhat.com/show_bug.cgi?id=1231334
Bug ID: 1231334
Summary: Gluster native client hangs on accessing dirty file in
disperse volume
Product: GlusterFS
Version: 3.7.0
Component: disperse
Severity: medium
Priority: high
Assignee: bugs at gluster.org
Reporter: dblack at redhat.com
CC: bugs at gluster.org, gluster-bugs at redhat.com
Description of problem:
Commands hang reading or writing a file from a dispersed volume after that file
is changed while the volume is degraded and then the degradation is resolved.
Version-Release number of selected component (if applicable):
[root at n1 ~]# gluster --version
glusterfs 3.7.1 built on Jun 1 2015 17:53:10
Repository revision: git://git.gluster.com/glusterfs.git
Copyright (c) 2006-2011 Gluster Inc. <http://www.gluster.com>
GlusterFS comes with ABSOLUTELY NO WARRANTY.
You may redistribute copies of GlusterFS under the terms of the GNU General
Public License.
How reproducible:
Consistently
Steps to Reproduce:
1. Write a file to a 6/2 distribute volume
2. Block access from the client to two of the bricks with iptables
3. Append data to the file
4. Flush iptables rules to reconnect client to all bricks
5. Attempt file read/write operations on the file
Actual results:
Command hangs indefinitely
Expected results:
Command succeeds, and heal is triggered
Additional info:
[root at n1 ~]# mount | grep rhgs
/dev/mapper/rhgs_vg-rhgs_lv on /rhgs/bricks type xfs
(rw,noatime,nouuid,attr2,inode64,logbsize=64k,sunit=128,swidth=128,noquota)
n1:ec01 on /rhgs/client/ec01 type fuse.glusterfs
(rw,relatime,user_id=0,group_id=0,default_permissions,allow_other,max_read=131072)
[root at n1 ~]# gluster volume info ec01
Volume Name: ec01
Type: Disperse
Volume ID: f9f8d1d8-10d0-48cf-8292-a03860296b80
Status: Started
Number of Bricks: 1 x (4 + 2) = 6
Transport-type: tcp
Bricks:
Brick1: n1:/rhgs/bricks/ec01-1
Brick2: n2:/rhgs/bricks/ec01-1
Brick3: n3:/rhgs/bricks/ec01-1
Brick4: n4:/rhgs/bricks/ec01-1
Brick5: n1:/rhgs/bricks/ec01-2
Brick6: n2:/rhgs/bricks/ec01-2
Options Reconfigured:
performance.readdir-ahead: on
[root at n1 ~]# find / -type d 2>/dev/null | tee -a /rhgs/client/ec01/dirs.txt >
/dev/null
[root at n1 ~]# iptables -F
[root at n1 ~]# iptables -A OUTPUT -d n3 -j DROP
[root at n1 ~]# iptables -A OUTPUT -d n4 -j DROP
[root at n1 ~]# echo "new data" >> /rhgs/client/ec01/dirs.txt
[root at n1 ~]# getfattr -d -m . -e hex /rhgs/bricks/ec01-1/dirs.txt
getfattr: Removing leading '/' from absolute path names
# file: rhgs/bricks/ec01-1/dirs.txt
trusted.bit-rot.version=0x0200000000000000557afa920002b7eb
trusted.ec.config=0x0000080602000200
trusted.ec.dirty=0x00000000000000020000000000000002
trusted.ec.size=0x000000000006c369
trusted.ec.version=0x00000000000000330000000000000035
trusted.gfid=0x1ab0e229ec8548f8bc08dcb7c3874408
[root at n1 ~]# iptables -F
[root at n1 ~]# file /rhgs/client/ec01/dirs.txt
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