[Ocfs2-users] Auto reboot when running fio benchmarking

[Nguyen Xuan. Hai]

Hi all,

I'm performing benchmarking on OCFS2 file system on LVM using fio tool.
There are some scenarios that when we run it, after few minutes, 
computer will reboot automatically. These scenarios are related to OCFS2 
file system only (there is no problem with ext3).

We tried to fix by adding option "--debug" in fio command
(example: /fio RandWR-ASync-IOdepth1-FixFileSize 
--output=RandWR-ASync-IOdepth1-FixFileSize.out //*-*//*-debug=io*/). 
Some scenarios can run successfully without rebooting. But there are 
still some scenarios cannot run successfully.

We tried to upgrade Linux kernel from 3.4.34 to 3.10.65 (after referred 
to link: 
https://oss.oracle.com/pipermail/ocfs2-users/2014-February/006130.html). 
Some scenarios can run successfully without rebooting. But there are 
still some scenarios cannot run successfully.

This is content of file "RandWR-ASync-IOdepth1-FixFileSize":
[global]
directory=/mnt/fio4G
filename=fio_data
invalidate=1
ioengine=libaio
direct=1
;ramp_time=30
iodepth=1

[RandWR-512-ASync-Depth1-Thread1-NoGrp-4G-Fix]
new_group
rw=randwrite
bs=512
size=4g
numjobs=1
group_reporting

[RandWR-4k-ASync-Depth1-Thread1-NoGrp-4G-Fix]
new_group
rw=randwrite
bs=4k
size=4g
numjobs=1
group_reporting

[RandWR-64k-ASync-Depth1-Thread1-NoGrp-4G-Fix]
new_group
rw=randwrite
bs=64k
size=4g
numjobs=1
group_reporting

[RandWR-1m-ASync-Depth1-Thread1-NoGrp-4G-Fix]
new_group
rw=randwrite
bs=1m
size=4g
numjobs=1
group_reporting

[RandWR-512-ASync-Depth1-Thread4-Grp-1G-Fix]
new_group
rw=randwrite
bs=512
size=1g
numjobs=4
group_reporting

[RandWR-4k-ASync-Depth1-Thread4-Grp-1G-Fix]
new_group
rw=randwrite
bs=4k
size=1g
numjobs=4
group_reporting

[RandWR-64k-ASync-Depth1-Thread4-Grp-1G-Fix]
new_group
rw=randwrite
bs=64k
size=1g
numjobs=4
group_reporting

[RandWR-1m-ASync-Depth1-Thread4-Grp-1G-Fix]
new_group
rw=randwrite
bs=1m
size=1g
numjobs=4
group_reporting

Could you help me find out the reason?

Thanks and Best regards,

-- 
=====================================================================
Nguyen Xuan Hai (Mr)

Toshiba Software Development (Vietnam) Co.,Ltd

=====================================================================

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