I second the smartutils. Also, if the drive is external, hubs, cables, and bus conversion boards start to get a lot more likely. <div class="gmail_quote">On Apr 20, 2012 5:15 PM, "Barry Tigner" <<a href="mailto:tigner@msu.edu">tigner@msu.edu</a>> wrote: <blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"> Hi JN, You could install smartmontools and get some info how how all the disks are performing and specifically what was reported on the bad drive. Barry -- Barry Tigner MSU PA Electronics Design and Service Ctr. 1230 BioMedical Physical Sciences Email: <a href="mailto:tigner@msu.edu">tigner@msu.edu</a> Phone: <a href="tel:517-884-5538" value="+15178845538">517-884-5538</a> On Fri, 2012-04-20 at 14:43 -0400, J Neveau wrote: > Thanks guys! I figured the drive was probably failing. > > > Did some Google research and found that it likely has bad sector(s) > that are giving read errors. > > > Usually, from what I read, the disk will try to reallocate the data > from a questionable sector to another > area on the drive. But when the drive was booting, the disk attempted > and failed to do that. > > > I used an option from hdparm to force reallocation of that sector. > > > Fortunately, there was little data on the drive to begin with. So > nothing lost... > > > Thanks again for the suggestions. Always a good learning experience. > > > JN > > On Fri, Apr 20, 2012 at 9:34 AM, J Neveau <<a href="mailto:neveauj@gmail.com">neveauj@gmail.com</a>> wrote: > Anyone ever seen any of this kind of output in dmesg before? > Might this be indicative of a drive failure? > > > [ 1.501112] sd 5:0:0:0: [sdf] 78165360 512-byte logical > blocks: (40.0 GB/37.2 GiB) > [ 1.501193] sd 5:0:0:0: [sdf] Write Protect is off > [ 1.501197] sd 5:0:0:0: [sdf] Mode Sense: 00 3a 00 00 > [ 1.501231] sd 5:0:0:0: [sdf] Write cache: enabled, read > cache: enabled, doesn't support DPO or FUA > [ 1.501439] sdf: > [ 1.520956] sdf1 > [ 1.521467] sd 5:0:0:0: [sdf] Attached SCSI disk > [ 55.184708] sd 5:0:0:0: [sdf] Unhandled sense code > [ 55.184710] sd 5:0:0:0: [sdf] Result: hostbyte=DID_OK > driverbyte=DRIVER_SENSE > [ 55.184714] sd 5:0:0:0: [sdf] Sense Key : Medium Error > [current] [descriptor] > [ 55.184733] sd 5:0:0:0: [sdf] Add. Sense: Unrecovered read > error - auto reallocate failed > [ 55.184739] sd 5:0:0:0: [sdf] CDB: Read(10): 28 00 03 d0 00 > 4f 00 00 40 00 > [ 55.184748] end_request: I/O error, dev sdf, sector > 63963215 > [ 55.184753] Buffer I/O error on device sdf1, logical block > 31981576 > [ 55.184758] Buffer I/O error on device sdf1, logical block > 31981577 > [ 55.184762] Buffer I/O error on device sdf1, logical block > 31981578 > [ 55.184765] Buffer I/O error on device sdf1, logical block > 31981579 > [ 55.184774] Buffer I/O error on device sdf1, logical block > 31981580 > [ 55.184777] Buffer I/O error on device sdf1, logical block > 31981581 > [ 55.184781] Buffer I/O error on device sdf1, logical block > 31981582 > [ 55.184784] Buffer I/O error on device sdf1, logical block > 31981583 > [ 55.184788] Buffer I/O error on device sdf1, logical block > 31981584 > [ 55.184792] Buffer I/O error on device sdf1, logical block > 31981585 > [ 79.656711] sd 5:0:0:0: [sdf] Unhandled sense code > [ 79.656713] sd 5:0:0:0: [sdf] Result: hostbyte=DID_OK > driverbyte=DRIVER_SENSE > [ 79.656717] sd 5:0:0:0: [sdf] Sense Key : Medium Error > [current] [descriptor] > [ 79.656736] sd 5:0:0:0: [sdf] Add. Sense: Unrecovered read > error - auto reallocate failed > [ 79.656742] sd 5:0:0:0: [sdf] CDB: Read(10): 28 00 03 d0 00 > 4f 00 00 08 00 > [ 79.656750] end_request: I/O error, dev sdf, sector > 63963215 > [ 79.656758] Buffer I/O error on device sdf1, logical block > 31981576 > [ 79.656763] Buffer I/O error on device sdf1, logical block > 31981577 > [ 79.656767] Buffer I/O error on device sdf1, logical block > 31981578 > [ 79.656770] Buffer I/O error on device sdf1, logical block > 31981579 > [ 103.968729] sd 5:0:0:0: [sdf] Unhandled sense code > [ 103.968731] sd 5:0:0:0: [sdf] Result: hostbyte=DID_OK > driverbyte=DRIVER_SENSE > [ 103.968735] sd 5:0:0:0: [sdf] Sense Key : Medium Error > [current] [descriptor] > [ 103.968754] sd 5:0:0:0: [sdf] Add. Sense: Unrecovered read > error - auto reallocate failed > [ 103.968760] sd 5:0:0:0: [sdf] CDB: Read(10): 28 00 03 d0 00 > 4f 00 00 08 00 > [ 103.968768] end_request: I/O error, dev sdf, sector > 63963215 > [ 103.968774] Buffer I/O error on device sdf1, logical block > 31981576 > [ 103.968779] Buffer I/O error on device sdf1, logical block > 31981577 > [ 103.968783] Buffer I/O error on device sdf1, logical block > 31981578 > [ 103.968786] Buffer I/O error on device sdf1, logical block > 31981579 > [ 235.691023] EXT3 FS on sdf1, internal journal > > > > > _______________________________________________ > linux-user mailing list > <a href="mailto:linux-user@egr.msu.edu">linux-user@egr.msu.edu</a> > <a href="http://mailman.egr.msu.edu/mailman/listinfo/linux-user" target="_blank">http://mailman.egr.msu.edu/mailman/listinfo/linux-user</a> _______________________________________________ linux-user mailing list <a href="mailto:linux-user@egr.msu.edu">linux-user@egr.msu.edu</a> <a href="http://mailman.egr.msu.edu/mailman/listinfo/linux-user" target="_blank">http://mailman.egr.msu.edu/mailman/listinfo/linux-user</a> </blockquote></div>