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. mark _______________________________________________ CentOS mailing list CentOS@xxxxxxxxxx https://lists.centos.org/mailman/listinfo/centos