[Bug 16019] Resume from hibernate corrupts ext4

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https://bugzilla.kernel.org/show_bug.cgi?id=16019





--- Comment #7 from David Lowe <lowe@brown.edu>  2010-05-21 18:00:27 ---
(In reply to comment #6)
> Just to test a theory, could you try doing "hdparm -W" on your disk(s) to check
> the write cache status?
> 
> If it's 1 (on), then prior to hibernate, can you try hdparm -W 0 on the disk(s)
> and see if the problem persists?  I'm wondering if it's possible that data in
> the drive's write cache got lost when the system powered down, if it wasn't
> properly flushed during hibernate.
> 
> You'll want to do hdparm -W 1 later to turn them back on if that was the
> original state.
> 
> Thanks,
> 
> -Eric

I gave that a try and did not find any difference.

The original state was 1 (on) so I set it to 0 and did a hibernate. 
The system comes back up with the unwritable disk as before.

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