Re: [PATCH] Caseless UUID comparsion in search command

[Arthur Marsh]

Pavel Roskin wrote, on 07/07/09 11:28:
> On Tue, 2009-07-07 at 10:41 +0930, Arthur Marsh wrote:
>
> > using grub-emu at the moment. I'll try in real grub when I reboot.
>
> Could you please try booting Linux in grub-emu?  You can interrupt qemu
> before the kernel tries to mount anything.  Or you can remove the
> "linux" line.  What matters is whether the "search" command works.  That
> would show if BIOS limitations play any role.

I haven't used grub-emu to boot linux.

In grub-emu I get:

sh:grub> ls -l
Device hd0: Partition table
        Partition hd0,7: Filesystem type ext2, Last modification time 
2009-07-07
 03:21:45 Tuesday, UUID 96c96a61-8615-4715-86d0-09cb8c62638c
        Partition hd0,6: Filesystem type fat, UUID 7417-5aff
        Partition hd0,5: Unknown filesystem
        Partition hd0,1: Filesystem type ext2, Last modification time 
2009-07-07
 03:23:54 Tuesday, UUID bfdeb6d6-0b77-4beb-a63d-bdc3e455b8ea

sh:grub> search -l ""
Segmentation fault
victoria:/home/amarsh04#


> > Partition hd0,1: Filesystem type ext2, Last modification time 2009-07-07
> >   00:49:27 Tuesday, UUID bfdeb6d6-0b77-4beb-a63d-bdc3e455b8ea
> >
> > tune2fs -l /dev/hda1 |grep UUID
> > Filesystem UUID:        bfdeb6d6-0b77-4beb-a63d-bdc3e455b8ea
>
> That means that the search command indeed fails to find a partition that
> GRUB sees.
>
> Since you are getting "device not found" with the refactor patch, it
> means that grub_device_iterate() doesn't set grub_errno.
>
> If --set is given, the iteration would stop as soon as the matching
> device is found.  Unfortunately, grub lists partitions backwards (we'll
> need to look at that), so a problem with a later partition could confuse
> GRUB.
>
> Please run "ls -l" in GRUB to see if it finds any problems.  Also please
> try running the "search" command manually on the command line.  Maybe
> the config file has some weird symbol somewhere.  You can also search by
> label, even though it's empty:
>
> search -l ""

In real grub:

ls -l

hd0: Partition table
Partition hd0,1: Filesystem cannot be accessed
Device hd1: filesysetm cannot be accessed
Device hd2: filesystem cannot be accessed
Device fd0: Filesystem cannot be accessed
error: no such disk

search -l ""

hd1,5 hd1,3

The /boot partition is on (hd0,1)

Regards,

Arthur Marsh.