kern/130330: [mpt] [panic] Panic and reboot machine MPT ...

[Riccardo Torrini]

On Wed, May 20, 2009 at 10:21:23AM -0400, John Baldwin wrote:

> Try this.  It reverts the single-CCB part of the previous
> commit while keeping the other fixes.  I missed that the
> CCB might still be in flight when we schedule another rescan.

Applied to mpt_raid.c,v 1.15.2.1 2008/07/28 17:05:09 jhb (it
differ only for line position but adiacent lines are the same).
Also redone a diff -u4 to verify, recompiled, installed, and...

YOO-HOO.  Now it rebuild _without_ crashing.

May 20 17:39:08 horse kernel: \
	mpt0:vol0(mpt0:0:0): RAID-1 - Degraded
	mpt0:vol0(mpt0:0:0): Status ( Enabled Re-Syncing )
	mpt0:vol0(mpt0:0:0): Low Priority Re-Sync
	mpt0:vol0(mpt0:0:0): 64461754 of 71087625 blocks remaining

Let me test against a 7.2-STABLE (and even to some -CURRENT)...

[some times ahead]

Bad news: I removed the second disk during rebuilding and it
still crash.  I take a screen shapshot with camera because of
too many messages for write down by hand  :)

Image, src tarball and info here (about 2.2MB):
ftp://ftp.torrini.org/pub/FreeBSD/mpt_crash_on_rebuild/


-- 
Riccardo.