Re: Linux kernel crash dumps (LKCD) and PowerPC ports.

[Arun Dharankar <ADharankar@ATTBI.Com>]

Piet, thanks for the reply!

Some of the points that I found attractive (among other points):

  - Overall a smaller time to reboot and save the dump, and bring the
    system back to working state.
  - Does not require local disk to save the dump on the way down during
    a panic - works on a diskless system.
  - No need for a dump/swap device.


Looking at the MCLX site, the last patch is on 2.4.17 only. Also, the
PowerPC port is a bit broken. Is anyone maintaining this part of the
MCLX scheme, and is available else where?


Best regards,
-Arun.


> > Looking at those sites, it appears that the development at
> > "http://lists.insecure.org/lists/linux-kernel/2003/Feb/0987.html."
> > which I had pointed is based on the SGI's dump scheme. Same
> > for the one you pointed to.
> >
> > The other scheme I poinited to (from Mission Critical Linux/MCLX)
> > seems to have some strong points too. Any pointers to discussions
> > about why the LKCD work seems to more active than the
> > MCLX one?
>
> I don't think there has been such a discussion. The Mission Critical
> hackers were hired by RedHat and Dave Anderson continues to work on
> crash and making it available at:
>
> 	ftp://people.redhat.com/anderson
>
> He's had about a release per month. I thought MCLX crash has some
> strong points also. After I enhanced LKCD to support the ia64 I
> fixed MCLX crash so it could read the new LKCD crash dumps which
> are no longer monotonically increasing in memory. I did this to
> support NUMA systems which can have more memory than swap space.
> This way the most important memory can be saved first.
>
> If you read the lkcd-devel mailing list you can read our discussion
> on maintaining MLCX crash on the lkcd cvs tree.
>
>
> 	"And imnsho, debugging the kernel on a source
> 	 level is the way to do it."
> 					Linus
>
> -piet
>
> > Best regards,
> > -Arun.
> >
> > On Tuesday 08 April 2003 07:14 pm, Matt D. Robinson wrote:
> > > Please look at the lkcd-devel mailing archives.  There is
> > > at least one group working on a PPC port of LKCD
> > >
> > > 	http://sourceforge.net/mail/?group_id=2726
> > >
> > > --Matt