[UTF-8]Vladimir 'Æ-coder/phcoder' Serbinenko writes:
On 09/15/2010 08:55 PM, Joey Korkames wrote:
Colin Watson writes:
On Xen (I'm told), it's possible to assign disk images in the host to
things that are named rather like partitions in the guest (e.g.
/dev/sda1), but that don't have an associated disk (e.g. /dev/sda);
indeed, the latter device is nonexistent. This confuses
grub_util_biosdisk_get_grub_dev.
There's really no other situation in which I think it's terribly
plausible that you might have /dev/sda1 but not /dev/sda, so it seems to
me that in this case we can reasonably treat the apparent "partition" as
a disk in its own right.
Can we make some of these 'decisions' switchable on the command line?
I perform a lot of block device redirections (Xen, iSCSI, nbd, etc) or
work from live cd's (where / is merely rootfs+unionfs with no disk,
but /boot is a mounted disk), and grub-setup raises fatal objections
that I would like to override when _I_ know what devnodes the
bootblocks and the filesystems belong on.
It looks like you confused grub-setup (called from grub-install) with
grub-mkconfig (called from update-grub). Former accesses only to
/boot/grub and it needs to know about /boot/grub in order to configure
image correctly.
Nope, I really do mean grub-setup. The situations I described also confuses
grub-install and grub-mkconfig's sh functions, but I generate my own configs
so I don't use those.
I was looking at the grub-setup code and just saw a new option,
--skip-fs-probe . I'll try that for the livecd edge case and if that
doesn't fix my problems, then I'll try to get a detailed breakpoint where
grub-setup gets confused.
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