On 1/3/2018 1:26 PM, Brad Campbell wrote:
On 03/01/18 20:44, Alexander Shenkin wrote:
On 12/23/2017 3:14 AM, Brad Campbell wrote:
On 21/12/17 19:38, Reindl Harald wrote:
Am 21.12.2017 um 12:28 schrieb Alexander Shenkin:
Hi all,
Reporting back after changing the hangcheck timer to 180 secs and
re-running checkarray. I got a number of rebuild events (see
syslog excerpts below and attached), and I see no signs of the
hangcheck issue in dmesg like I did last time.
I'm still getting the SMART OfflineUncorrectableSector and
CurrentPendingSector errors, however. Should those go away if the
rewrites were correctly carried out by the drive? Any thoughts on
next steps to verify everything is ok?
OfflineUncorrectableSector unlikely can go away
CurrentPendingSector
https://kb.acronis.com/content/9133
If they've been re-written (so are no longer pending) then a SMART
long or possibly offline test will make them go away. I use SMART
long myself.
Thanks Brad. I'm running a long test now, but I believe I have the
system set up to run long tests regularly, and the issue hasn't been
fixed. Furthermore, strangely, the reallocated sector count still
sits at 0 (see below). If these errors had been properly handled by
the drive, shouldn't Reallocated_Sector_Ct sit at least at 8?
Nope. Your pending is still at 8, so you've got bad sectors in an area
of the drive that hasn't been dealt with. What is "interesting" is that
your SMART test results don't list the LBA of the first failure.
Disappointing behaviour on the part of the disk. They are within the 1st
10% of the drive however, so it wouldn't surprise me if they were in an
unused portion of the RAID superblock area.
Thanks Brad. So, to theoretically get these sectors remapped so I don't
keep getting errors, I would have to somehow try to write to those
sectors. That's tough given that the LBA's aren't reported as you
mention. Perhaps my best course of action then is to:
1) re-run sudo /usr/share/mdadm/checkarray --idle --all
2) add my previously-purchased drive to convert the RAID5 to RAID6
(using
http://www.ewams.net/?date=2013/05/02&view=Converting_RAID5_to_RAID6_in_mdadm
as a guide)
3) after that, fail and remove /dev/sda from the RAID6
4) write 0's on /dev/sda (dd if=/dev/zero of=/dev/sda bs=1M)
5) re-add /dev/sda to the RAID6
This should get those bad sectors remapped... thoughts?
thanks,
allie
--
To unsubscribe from this list: send the line "unsubscribe linux-raid" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at http://vger.kernel.org/majordomo-info.html
