[CentOS] Strange performance issue on CentOS 6.7 server
Alfred von Campe
alfred at von-campe.com
Wed Feb 3 21:26:57 UTC 2016
On Feb 3, 2016, at 16:13, Warren Young wrote:
> A dying hard disk can do it. HDDs try to silently paper over I/O errors, but what they can’t hide is the time it takes to do this. If your HDD is constantly correcting errors at the oxide layer, it will be reeeeeallly sllllow.
>
> You can try running SMART tests on it, though that’s not guaranteed to show the problem.
Well, it’s not “a” disk: it’s a HW RAID of about dozen (server grade) drives, with a VG/LV on top of that. Are there any log files I can check that test the underlying VG/LV health status?
Alfred
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