Bug 763906 (GLUSTER-2174) - fio crashed on a fuse mount
Summary: fio crashed on a fuse mount
Keywords:
Status: CLOSED WONTFIX
Alias: GLUSTER-2174
Product: GlusterFS
Classification: Community
Component: fuse
Version: 3.1.1
Hardware: x86_64
OS: Linux
low
low
Target Milestone: ---
Assignee: shishir gowda
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Depends On:
Blocks:
TreeView+ depends on / blocked
 
Reported: 2010-12-02 10:22 UTC by Ansgar Jazdzewski
Modified: 2013-12-09 01:22 UTC (History)
5 users (show)

Fixed In Version:
Doc Type: Bug Fix
Doc Text:
Clone Of:
Environment:
Last Closed:
Regression: RTP
Mount Type: fuse
Documentation: DA
CRM:
Verified Versions:

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Description Amar Tumballi 2010-12-02 08:10:13 UTC 
This can is directly related to handling of 'O_DIRECT' flag over glusterfs mount point.

  bash# dd if=/dev/zero of=$gluster_mount/testfile oflag=direct bs=128k count=1
Comment 1 Ansgar Jazdzewski 2010-12-02 10:22:53 UTC 
hi

i try to get some informations about my gluster setup so i use

fio /usr/share/doc/fio/exsamples/iometer-file-access-server

after a wihle it crached the log form glusterfs is normal

err=22/file:filesetup.c:455, func=open(iometer.1.0) error=Invalid argument

my setup

Volume Name: deployer
Type: Distributed-Replicate
Status: Started
Number of Bricks: 2 x 2 = 4
Transport-type: tcp
Bricks:
Brick1: gluster01:/data/deployer
Brick2: gluster02:/data/deployer
Brick3: gluster03:/data/deployer
Brick4: gluster04:/data/deployer
Comment 2 shishir gowda 2011-01-07 02:52:54 UTC 
Fuse does not support O_DIRECT mode.
Until fuse supports it, O_DIRECT ops will fail.
Comment 3 Divya 2011-03-17 06:02:02 UTC 
Added the following information in 3.1.3 Release Notes (Known Issues section):
FIO crashes on a fuse mount - FIO application crashes on gluster, because fuse does not support O_DIRECT flags for opens over the mount point. For more information, see bug 763906.
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