On Tue, Oct 29, 2019 at 11:04:21AM +0000, Tim Small wrote: > I've seen this a few times. Sometimes there is a pending sector, but > it's not user-addressable, sometimes the firmware seems to get the count > wrong. > You could try doing a full-self-test and see if that terminates without > error. See below > If you can temporarily take the drive out of service, you could also try > doing a secure erase using hdparm, to see if that gets the count to zero. I can wipe the whole drive, but this puts me in degraded mode for a while without actually needing to be from what I can tell, so it's not my first choice. On Tue, Oct 29, 2019 at 12:05:02PM +0000, Jorge Bastos wrote: > Same, especially with WD drives, they appear to be false positives, if > you can take the disk offline a full disk write will usually get rid > of them. I see. So somehow reading all the sectors with hdrecover does not trigger anything, but dd'ing 0s over the entire drive would reset this? On Tue, Oct 29, 2019 at 05:27:47PM +0500, Roman Mamedov wrote: > Oh and talking of "especially WD" and especially Green, such transient errors > are a a sure symptom of rust developing on PCB contact pads: > https://www.youtube.com/watch?v=tDTt_yjYYQ8 > > E.g. Hitachi doesn't have this issue (they have drops of solder on each > contact pad); not much experience with Seagate; and WD themselves later > improved the design of this connection (redesigned type seen at least on a 6TB > WD Red). But wouldn't that show real errors when I'm reading the whole drive? SMART Self-test log structure revision number 1 Num Test_Description Status Remaining LifeTime(hours) LBA_of_first_error # 1 Extended offline Completed without error 00% 21804 - # 2 Short offline Completed without error 00% 21788 - # 3 Short offline Completed without error 00% 21765 - # 4 Short offline Completed without error 00% 21742 - # 5 Extended offline Completed: read failure 10% 21731 3457756336 # 6 Short offline Completed without error 00% 21717 - # 7 Short offline Completed without error 00% 21693 - # 8 Short offline Completed without error 00% 21670 - # 9 Short offline Completed without error 00% 21646 - #10 Short offline Completed without error 00% 21623 - #11 Short offline Completed without error 00% 21599 - #12 Short offline Completed without error 00% 21575 - #13 Extended offline Completed: read failure 10% 21562 2905616752 #14 Short offline Completed without error 00% 21551 - #15 Short offline Completed without error 00% 21527 - #16 Short offline Completed without error 00% 21503 - #17 Short offline Completed without error 00% 21479 - #18 Short offline Completed without error 00% 21455 - #19 Short offline Completed without error 00% 21431 - #20 Short offline Completed without error 00% 21408 - #21 Extended offline Completed without error 00% 21398 - 2 of 2 failed self-tests are outdated by newer successful extended offline self-test # 1 That said my pending sectors is still 9: 197 Current_Pending_Sector 0x0032 200 200 000 Old_age Always - 9 This is still perplexing. Would a full offline test verify every sector? Thanks, Marc -- "A mouse is a device used to point at the xterm you want to type in" - A.S.R. Microsoft is to operating systems .... .... what McDonalds is to gourmet cooking Home page: http://marc.merlins.org/
