Re: Trouble finding bad block on WDC WD1600SB-01KBA0

On 2017-01-10 02:12, mathog wrote:
> Hi,
> 
> One system has a WDC WD1600SB-01KBA0 which shows
> 
> 197 Current_Pending_Sector  0x0012   200   200   000    Old_age   Always 
>        -       1
> 198 Offline_Uncorrectable   0x0012   200   200   000    Old_age   Always 
>        -       0
> 199 UDMA_CRC_Error_Count    0x000a   200   253   000    Old_age   Always 
>        -       1
> 
> Sadly, it does not list the block number in any of the test results
> (or the system log files).
> 
> Tried these steps to find the pending sector...
> 
>    reboot (to clear cache)

There is a way to clear it without reboot. Let me see... [...]

> To free pagecache: echo 1 > /proc/sys/vm/drop_caches To free
> dentries and inodes: echo 2 > /proc/sys/vm/drop_caches To free
> pagecache, dentries and inodes: echo 3 > /proc/sys/vm/drop_caches

Or issue "sync" at the end.

> /sbin/sysctl -q -w vm.drop_caches=3
> using /sbin/sysctl is equivialent to the "echo >/proc/sys/..." line
> above


>    # log in once it came back up
>    dd if=/dev/sda of=/dev/null bs=512
> 
> which completed without error.  Then tried
> 
>     smartctl -t long /dev/sda
> 
> and that also completed without error.
> 
> However "smartctl -a " still shows a pending sector.

The same thing happened to me recently.

> Is there some other trick to find the thing?


I run "badblocks" with the intention of locating them, and they
disappeared...


-- 
Cheers / Saludos,

		Carlos E. R.
		(from 42.2 x86_64 "Malachite" at Telcontar)

------------------------------------------------------------------------------
Developer Access Program for Intel Xeon Phi Processors
Access to Intel Xeon Phi processor-based developer platforms.
With one year of Intel Parallel Studio XE.
Training and support from Colfax.
Order your platform today. http://sdm.link/xeonphi

_______________________________________________
Smartmontools-support mailing list
[email protected]
https://lists.sourceforge.net/lists/listinfo/smartmontools-support

-----BEGIN PGP SIGNATURE-----
Version: GnuPG v2

iEYEARECAAYFAlh0snsACgkQtTMYHG2NR9VsHQCfUYoQUkfLbiN0bs4XUHmQneGU
biEAmwXKG94xAlpYFLZ4zmHFNJNS6BZW
=6bN7
-----END PGP SIGNATURE-----