DragonFly BSD
DragonFly bugs List (threaded) for 2005-04
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Re: DFly-stable as of April 1st crashed, but no crash dump was possible due to ips driver being unable to do crash dumps

From: YONETANI Tomokazu <qhwt+dfly@xxxxxxxxxx>
Date: Sun, 3 Apr 2005 11:18:47 +0900

On Sun, Apr 03, 2005 at 02:56:29AM +0200, Tomaž Borštnar wrote:
> Matthew Dillon wrote:
> >    Turn off sync_on_panic and see if you can get a dump.
> >
> >    sysctl kern.sync_on_panic=0
> OK, same error as before (in less than 12 hours!):
> Warning: cache_inval_vp: race-A detected on pgstat.stat


> boot() called on cpu#0
> syncing disks...

This is strange; looking at the code responsible for the sync on
panic, it should not print the message "syncing disks" when
sync_on_panic is set to zero(i.e. (bootopt & RB_NOSYNC) != 0).

As for dump feature on ips driver, sorry I haven't had enough time
to port it. I asked Scott Long many months ago for his work-in-progress
dump patch(which has already been committed on FreeBSD 5.x+), and he gave
it to me, but I couldn't finish porting it then. I'm still trying to find
time to work on it though.

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