On Sat, Mar 14, 2015 at 5:56 PM, Tom Horsley <horsley1953@xxxxxxxxx> wrote: > On Sat, 14 Mar 2015 16:42:37 -0600 > Chris Murphy wrote: > >> If there's a definite latent sector error, this shows up with a >> 'smarctl -t long' which will be aborted at the first error found. The >> LBA for this shows up under LBA_of_first_error. > > I actually ran one of those when I first started seeing the > messages (I've got another going now), and the prev test results were: > > # 2 Extended offline Completed without error 00% 17259 - > > So that lonely '-' out there apparently says there is no > LBA with an error, the overall health assessment says PASSED, > yet these have been showing up every half our or so for a week > now: > > Mar 14 19:46:52 zooty smartd[812]: Device: /dev/sdc [SAT], 8 Currently unreadable (pending) sectors > Mar 14 19:46:52 zooty smartd[812]: Device: /dev/sdc [SAT], 8 Offline uncorrectable sectors This is consistent with a single sector on a 512e AF drive. If it's unreadable, somewhere in the journal or messages is a read error or link reset. You could search for "media error" and "hard resetting link". What do you get for: # smartctl -x /dev/sdc # parted /dev/sdc u s p > It seems to be telling me there is nothing wrong and something > wrong at the same time. I'd probably just be happy with > the "PASSED" health check if it wasn't constantly > spewing these messages :-). A valid option is to keep the backups current and ignore it until the number goes up again. Another option is a non-destructive badblocks (omit the w) with -b 4096, and see if you can trigger a read error. A libata error will be a proper LBA. A badblocks error will need to be multiplied by 8 to get an LBA. This value then gets plugged into debugfs (this is ext4?) to find out what file is affected. And then it also gets plugged into a dd if=/dev/zero if=/dev/sdc bs=4096 seek=$((LBA/8)) to write over that sector - that'll fix this. -- Chris Murphy -- users mailing list users@xxxxxxxxxxxxxxxxxxxxxxx To unsubscribe or change subscription options: https://admin.fedoraproject.org/mailman/listinfo/users Fedora Code of Conduct: http://fedoraproject.org/code-of-conduct Guidelines: http://fedoraproject.org/wiki/Mailing_list_guidelines Have a question? Ask away: http://ask.fedoraproject.org
