[CentOS] rebuilding anaconda for centos 4.0

[Johnny Hughes]

On Wed, 2005-04-27 at 14:24 -0500, David Thompson wrote:
> David Thompson wrote:
> >
> >Hi all:
> >
> >I'm trying to rebuild the anaconda installer for Centos 4.0 (i386) to add some
> > 
> >RPMs and do some other things, and I've run into a problem.  I've done lots of
> > 
> >anaconda rebuilds for Tao Linux 1.0, and I'm bringing those bits forward into 
> >Centos 4.0.  The all-knowing web hasn't turned up anything useful.  It looks 
> >like the PXE-loaded kernel unpacked and mounted the initrd OK, but then things
> > 
> >went awry (quickly).  Anyone seen this on a PXE boot of an anaconda build?
> >
> ><snip>
> >RAMDISK: Compressed image found at block 0
> >VFS: Mounted root (ext2 filesystem).
> >VFS: Cannot open root device "<NULL>" or unknown-block(3,2)
> >Please append a correct "root=" boot option
> >Kernel panic - not syncing: VFS: Unable to mount root fs on unknown-block(3,2)
> 
> Well, since no one replied to this I'll follow up my own post.
> 
> It turns out that the 2.6.9-5.0.3.EL series of kernels has a bug in loop back 
> mounting file systems:
> 
> https://bugzilla.redhat.com/bugzilla/show_bug.cgi?id=105595
> 
> (the bug is filed against fc3 but affects the original centos 4.0 kernels as 
> well.)  The bug prevents the initrd.img in anaconda from being populated, and 
> everything goes kaplooey as soon as the PXE boot tries to do anything with 
> it's initrd.  It would also affect rebuilt ISO images.
> 
> The fix is to upgrade the host running buildinstall to a 2.6.9-5.0.5.EL 
> kernel, which has a fix for bug 105595.  Then everything works just fine.
> 
> --
> Dave Thompson  ( thomas(at)cs(dot)wisc(dot)edu )
> 
> Associate Researcher                  Department of Computer Science
> University of Wisconsin-Madison       http://www.cs.wisc.edu/(twiddle)thomas
> 1210 West Dayton Street
> Madison, WI 53706-1685
> --

Thank you very much for the follow up post.
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