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| Tim42 | I think I found a bug in 2.6.31-xx-powerpc, but I want to make sure its a bug (and not my own stupidity). | 04:24 |
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| holstein | hey guys.. if i have kernel 2.6.32-16-generic | 05:52 |
| holstein | and i want to test something with the mainline kernel | 05:53 |
| holstein | which one from... | 05:53 |
| holstein | http://kernel.ubuntu.com/~kernel-ppa/mainline/?C=D;O=A | 05:53 |
| holstein | should i get? | 05:53 |
| crimsun | holstein: meaning which one most closely is the basis? | 06:26 |
| jjohansen | holstein: 2.6.32.9 would be the closest | 06:26 |
| holstein | http://kernel.ubuntu.com/~kernel-ppa/info/kernel-version-map.html | 06:26 |
| holstein | yup | 06:26 |
| holstein | i should have said | 06:26 |
| holstein | i got linked the map over in #ubuntu+1 | 06:27 |
| crimsun | my timing is spectacular :-) | 06:27 |
| holstein | hehe | 06:27 |
| jjohansen | but it would also be worth testing 2.6.33 | 06:27 |
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| dyek | Hi! I'm using Debian Squeeze's kernel to boot Ubuntu 9.10's DomU (cause that is the only kernel that works with Xen for me so far). If I were to use Debian Squeeze's initrd, I get this error: "No filesystem could mount root, tried:", "Kernel panic - not syncing: VFS: Unable to mount root fs on unknown-block(0,0)". I suspect that that was caused by Ext-4 FS used on Ubuntu 9.10. I'm now trying to use Ubuntu 9.10's initrd, but copy Debian Squeeze's | 22:37 |
| dyek | initrd's lib/modules/2.6.32-trunk-686-bigmem directory into my Ubuntu-based custom initrd. I'm still getting the same error. Is there any tips if my approach can work and what other steps I need to carry out before it will work? | 22:37 |
| jjohansen | dyek: which 9.10 kernel specifically? | 23:24 |
| dyek | jjohansen: initrd.img-2.6.31-16-generic. | 23:25 |
| dyek | jjohansen: Debian Squeeze's vmlinuz-2.6.32-trunk-686-bigmem kernel, though, works with Xen (3.4.2 -- rather recent version.) | 23:27 |
| jjohansen | err modules in, lib/modules/2.6.32-trunk-686-bigmem won't work with a 2.6.31-16 kernel | 23:27 |
| jjohansen | ext4 should be builtin to the 2.6.31-16 kernel | 23:28 |
| dyek | jjohansen: OK. So, kernel module can never be moved to another minor version of kernel? Or with just a minor version difference, there is some chance that a kernel module will work with another kernel? | 23:29 |
| jjohansen | generally no, its based off of the abi | 23:29 |
| jjohansen | when building a kernel an abi "signature" is created and that has to match | 23:30 |
| jjohansen | so even just changing config options can result in a kernel that needs different modules | 23:30 |
| dyek | jjohansen: OK. So, the signature is the key! Thanks! ... I was told that "unknown-block(0,0)" means missing hdd-driver not FS. | 23:31 |
| jjohansen | dyek: right that is probably the hdd driver | 23:31 |
| jjohansen | but you mentioned 9.10 ext4 above | 23:32 |
| jjohansen | have you tried a lucid kernel? | 23:32 |
| jjohansen | its 2.6.32 based, and karmic will run ontop of the lucid kernel | 23:32 |
| dyek | jjohansen: Yeah...I could only guess as I don't understand enough. Lucid kernel? Any pointer to it? | 23:33 |
| dyek | https://blueprints.launchpad.net/ubuntu/+spec/kernel-lucid-kernel-decision | 23:34 |
| jjohansen | http://packages.ubuntu.com/lucid/admin/ | 23:35 |
| jjohansen | look for linux-image | 23:35 |
| jjohansen | or you can grab the source from the git tree | 23:35 |
| dyek | Thanks! | 23:36 |
| dyek | http://lxr.linux.no/#linux+v2.6.33/Documentation/x86/boot.txt | 23:38 |
| dyek | Protocol 2.10: (Kernel 2.6.31) Added a protocol for relaxed alignment beyond the kernel_alignment added, new init_size and pref_address fields. Added extended boot loader IDs. | 23:38 |
| dyek | jjohansen: Do you think if this change could be why I had problems booting 2.6.31 as Xen DomU? (And that maybe it is fixed in 2.6.32?) | 23:39 |
| jjohansen | dyek: unlikely | 23:40 |
| dyek | OK! Thanks! | 23:41 |
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