Have you ran a "long" smart test on the drive? Smartctl -t long device I'm not sure what's going on with your drive. But if it were mine, I'd want to replace it. If there are issues, that long smart check ought to turn up something, and in my experience, that's enough for a manufacturer to do a warranty replacement. On Jan 17, 2016 11:00, "Alessandro Baggi" <alessandro.baggi at gmail.com> wrote: > Hi list, > I've a notebook with C7 (1511). This notebook has 2 disk (640 GB) and I've > configured them with MD at level 1. Some days ago I've noticed some > critical slowdown while opening applications. > > First of all I've disabled acpi on disks. > > > I've checked disk for badblocks 4 consecutive times for disk sda and sdb > and I've noticed a strange behaviour. > > On sdb there are not problem but with sda: > > 1) First run badblocks reports 28 badblocks on disk > 2) Second run badblocks reports 32 badblocks > 3) Third reports 102 badblocks > 4) Last run reports 92 badblocks. > > > Running smartctl after the last badblocks check I've noticed that > Current_Pending_Sector was 32 (not 92 as badblocks found). > > To force sector reallocation I've filled the disk up to 100%, runned again > badblocks and 0 badblocks found. > Running again smartctl, Current_Pending_Sector 0 but Reallocated_Event > Count = 0. > > Why each consecutive run of badblocks reports different results? > Why smartctl does not update Reallocated_Event_Count? > Badblocks found on sda increase/decrease without a clean reason. This > behaviuor can be related with raid (if a disk had badblocks this badblock > can be replicated on second disk?)? > > What other test I can perform to verify disks problems? > > Thanks in advance. > _______________________________________________ > CentOS mailing list > CentOS at centos.org > https://lists.centos.org/mailman/listinfo/centos >