Alfred von Campe wrote:
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?
You don't mention what kind of h/w RAID. LSI-based controller, and HP-based ones, both have utilities to check out the drives (MegaRAID and hpacli, respectively); AC&NC JetStors have a web interface.
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