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SubjectRe: RAID arrays not reconstructing in 2.6
On Mon, Feb 02, 2004 at 03:46:49PM +1100, Neil Brown wrote:
> On Sunday February 1, dan@debian.org wrote:
> > I saw this a couple of weeks ago in a 2.6.0-test kernel, and today in
> > 2.6.2-rc3. When I have to hit the hard reset button on my desktop, whose
> > root filesystem is RAID5 on /dev/md0, it comes back up cleanly - no
> > reconstruction.
>
> Cool, isn't it!
>
> >
> > Have we gotten a whole lot more enthusiastic about marking superblocks clean
> > lately, or should I be worried? Obviously this always used to trigger
> > reconstruction, until recently.
>
> Yes. Lots more enthusiastic.
> If there is no write activity for 20msec, we mark the superblock clean
> and write it out, and are careful to write out a dirty superblock
> before allowing another write to complete.

Wow, thanks! That's really awesome, considering how long
reconstruction takes this system (about an hour of completely useless
otherwise).

--
Daniel Jacobowitz
MontaVista Software Debian GNU/Linux Developer
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