jbd2 headache

[Bryn M. Reeves]

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On 06/06/2012 04:19 AM, Doug Wyatt wrote:
> I have a 2TB HD with 1463 pending bad blocks, 0 reallocated so
> far. All the data has been moved to another HD, the problem HD
> unmounted. Full SMART scan verified the pending bad blocks.
> 
> However, I can't run badblocks on /dev/sdc1 because it is
> "apparently in use".  lsof tells me there are 3 instances of
> jbd2/sdc1.
> 
> It should be no problem to use -f with badblocks in this case, but 
> is there any way to stop jdb2 from accessing the unmounted
> partition?

Sounds like bug 808795:

"kernel leaks references to block devices"

https://bugzilla.redhat.com/show_bug.cgi?id=808795

Regards,
Bryn.
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