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From: | Vladimir 'φ-coder/phcoder' Serbinenko |
Subject: | Re: grub-probe seems to be having problems |
Date: | Thu, 08 Mar 2012 18:46:42 +0100 |
User-agent: | Mozilla/5.0 (X11; Linux x86_64; rv:8.0) Gecko/20120216 Icedove/8.0 |
On 05.03.2012 21:07, Lennart Sorensen wrote:
Yes, I've just fixed one. grub-fstest works on big-endian now. Couldn't test grub-probe since the Ubuntu on my PPC test machine is outdated.On Sat, Mar 03, 2012 at 11:00:28PM +0100, Vladimir 'φ-coder/phcoder' Serbinenko wrote:On 01.03.2012 20:47, Lennart Sorensen wrote:address@hidden:~# /usr/sbin/grub-probe --device /dev/md1 --target=partmap /usr/sbin/grub-probe: error: disk `mduuid/dc00bd3a0e9491bb0b66fa8b9246c2e8' not found.Attached patch eliminates some idiosyncracies problems with mdraid 1.x. Also fixes partial import problem and raid5 partial array problem.No improvement that I can see. Is it possible there is endianess bugs in the code?
GRUB always assumes that RAID metadata is in little-endian. We don't have any "native-endian parsers" since we assume that grub-probe results are valid for GRUB runtime as well even if they run on different endianness. If we need any support for structures which can be either le or be we compile code twice, once for le, once for be (look at e.g. cpio code). I couldn't test the images created on big-endian platform due to ancient distro.1.x format is ALWAYS little endian, but I am on a big endian machine. 0.9 format is host endianess.
-- Regards Vladimir 'φ-coder/phcoder' Serbinenko
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