|To:||Dave Chinner <david@xxxxxxxxxxxxx>|
|Subject:||Re: bad performance on touch/cp file on XFS system|
|From:||Zhang Qiang <zhangqiang.buaa@xxxxxxxxx>|
|Date:||Mon, 25 Aug 2014 16:09:05 +0800|
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Thanks for your quick and clear response. Some comments bellow:
2014-08-25 13:18 GMT+08:00 Dave Chinner <david@xxxxxxxxxxxxx>:
[Qiang] This meas that if I want to fix this issue, I have to apply the following patches and build my own kernel.
As the on-disk structure has been changed, so should I also re-create xfs filesystem again? is there any user space tools to convert old disk filesystem to new one, and don't need to backup and restore currently data?
[Qiang] Do you think if it's possible to just backport these patches to kernel Â6.2.32 (CentOS 6.3) to fix this issue?
Or it's better to backport to 3.10 kernel, used in CentOS 7.0?
OK, I see.
Could you please guide me to reproduce this issue easily? as I have tried to use a 500G xfs partition, and use about 98 % spaces, but still can't reproduce this issue. Is there any easy way from your mind?
I will try to investigate the detail issue.
Thanks for your kindly response.
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