Hey. I'm seeing these errors: Jun 09 21:13:22 heisenberg kernel: sd 6:0:0:0: [sdb] Unaligned partial completion (resid=16, sector_sz=512) Jun 09 21:13:22 heisenberg kernel: sd 6:0:0:0: [sdb] tag#0 FAILED Result: hostbyte=DID_OK driverbyte=DRIVER_SENSE Jun 09 21:13:22 heisenberg kernel: sd 6:0:0:0: [sdb] tag#0 Sense Key : Medium Error [current] Jun 09 21:13:22 heisenberg kernel: sd 6:0:0:0: [sdb] tag#0 Add. Sense: Unrecovered read error Jun 09 21:13:22 heisenberg kernel: sd 6:0:0:0: [sdb] tag#0 CDB: Read(16) 88 00 00 00 00 01 cd e6 de 40 00 00 00 e0 00 00 Jun 09 21:13:22 heisenberg kernel: print_req_error: critical medium error, dev sdb, sector 7749426752 Jun 09 21:13:31 heisenberg kernel: sd 6:0:0:0: [sdb] Unaligned partial completion (resid=12, sector_sz=512) Jun 09 21:13:31 heisenberg kernel: sd 6:0:0:0: [sdb] tag#0 FAILED Result: hostbyte=DID_OK driverbyte=DRIVER_SENSE Jun 09 21:13:31 heisenberg kernel: sd 6:0:0:0: [sdb] tag#0 Sense Key : Medium Error [current] Jun 09 21:13:31 heisenberg kernel: sd 6:0:0:0: [sdb] tag#0 Add. Sense: Unrecovered read error Jun 09 21:13:31 heisenberg kernel: sd 6:0:0:0: [sdb] tag#0 CDB: Read(16) 88 00 00 00 00 00 00 14 59 60 00 00 01 00 00 00 Jun 09 21:13:31 heisenberg kernel: print_req_error: critical medium error, dev sdb, sector 1333600 Jun 09 21:13:53 heisenberg kernel: sd 6:0:0:0: [sdb] Unaligned partial completion (resid=12, sector_sz=512) Jun 09 21:13:53 heisenberg kernel: sd 6:0:0:0: [sdb] tag#0 FAILED Result: hostbyte=DID_OK driverbyte=DRIVER_SENSE Jun 09 21:13:53 heisenberg kernel: sd 6:0:0:0: [sdb] tag#0 Sense Key : Medium Error [current] Jun 09 21:13:53 heisenberg kernel: sd 6:0:0:0: [sdb] tag#0 Add. Sense: Unrecovered read error Jun 09 21:13:53 heisenberg kernel: sd 6:0:0:0: [sdb] tag#0 CDB: Read(16) 88 00 00 00 00 00 c3 a2 56 80 00 00 01 00 00 00 Jun 09 21:13:53 heisenberg kernel: print_req_error: critical medium error, dev sdb, sector 3282196096
(many of them) on a Seagate 8TB Archive HDD. The disk is only a year old and barely used (since it's just one of the backups of my main data disks - and the primary disk another Seagate 8TB HDD broke just few days ago). I have connected them via USB/SATA bridge... and when I now started copying from the backup (which is sdb) to a fresh HDD I started seeing vast numbers of these errors. However, fsck, cp seem to do fine, and the data (as far as it has been copied) seems good (I have sha512 sums of all of it). Any ideas what "Unaligned partial completion" and these errors mean? Thanks, Chris.
