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. -------------- next part -------------- A non-text attachment was scrubbed... Name: signature.asc Type: application/pgp-signature Size: 189 bytes Desc: This is a digitally signed message part URL: <http://lists.centos.org/pipermail/centos/attachments/20050427/f8749602/attachment-0005.sig>