restart the system in single user mode, make sure the volume is mounted as read only and check it with fdisk. fdisk has flags that will do a badblocks scan. smart is predictive and doesn't catch all errors its also not compatible with all disks and controllers especially raid capable controllers. On Tue, Oct 16, 2018 at 1:24 PM Subscribe Scientific-Linux-Users Rm < [log in to unmask]> wrote: > hi, > I am running SL7.4 on Xeon E5 machine. > > # uname -a > Linux rc-dellt430 3.10.0-862.14.4.el7.x86_64 #1 SMP Tue Sep 25 14:32:52 > CDT 2018 x86_64 x86_64 x86_64 GNU/Linux > > Every few minutes (i think whenver smart runs) I get this in > /var/log/messages: > > Oct 16 10:22:25 rc-dellt430 kernel: sd 0:0:0:0: [sda] tag#0 FAILED Result: > hostbyte=DID_BAD_TARGET driverbyte=DRIVER_OK > Oct 16 10:22:25 rc-dellt430 kernel: sd 0:0:0:0: [sda] tag#0 CDB: ATA > command pass through(16) 85 06 20 00 00 00 00 00 00 00 00 00 00 00 e5 00 > Oct 16 10:22:25 rc-dellt430 udisksd[14184]: Error performing housekeeping > for drive /org/freedesktop/UDisks2/drives/TOSHIBA_MG03ACA100_46SIKCQFF: > Error updating SMART data: sk_disk_check_sleep_mode: Input/output error > (udisks-error-quark, 0) > > > The "smartctl -A /dev/sda" isn't saying any errors with the disk. So what > could be the issue. Is the disk really failing or something else is the > issue ? >