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Re: Future of installing GRUB to LVM volumes (and loop devices)


From: Vladimir 'φ-coder/phcoder' Serbinenko
Subject: Re: Future of installing GRUB to LVM volumes (and loop devices)
Date: Thu, 07 May 2015 11:35:25 +0200
User-agent: Mozilla/5.0 (X11; Linux x86_64; rv:31.0) Gecko/20100101 Icedove/31.6.0

> Nevertheless, let's get good old
> 
>   grub-install --boot-directory=... /dev/...
> 
> fixed, please.  It did work previously.  How do we proceed?
> 
grub tools assume that notion of what's "physical" remains unchanged
between install and boot unless specified otherwise in device.map. This
assumption is important to find out how to access disks. Obviously it's
not true when using
> 
> # grub-install --boot-directory=/mnt/loop-root/boot '(hd0)' ; echo $?
> /usr/sbin/grub-probe: error: cannot find a GRUB drive for
> /dev/mapper/loop0p1.  Check your device.map.
Does this wotk with HEAD? It should as long as GRUB is compiled with
devmapper support

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