Re: bdflush and postgres stuck in D state

[Andrew Morton]

Jakob Østergaard wrote:
> 
> Sorry for following up on my own post, I have a little extra
> information.
> 
> I started a g++ job to try to force the machine to write out some dirty
> buffers before I reboot.   g++ now hangs along with two sync's, bdflush
> and the postgres process.
> 

Since 2.4.7 several bugs have been fixed in RAID1 which would
cause this, including a missing blockdevice unplug and failure
to hang onto the supposedly-reserved RAID1 buffer-heads.

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