Live CD - luks - lvm2 -- Can't mount encrypted lvm2 logical volume via Live CD

[John Himpel]

On Wed, Nov 10, 2010 at 10:53 AM, Michael Schwendt <mschwendt at gmail.com>wrote:

> On Wed, 10 Nov 2010 07:29:23 -0500, John wrote:
>
> > > Second thought before I'm afk: If you meant to say that sda6 is an
> > > encrypted PV (which builds VG dubby), do you get the same problem for
> > > lv_home? And what does dumpe2fs say about the LV's filesystems?
> > >
> >
> >
> > [root at localhost ~]# dumpe2fs /dev/sda6
> > dumpe2fs 1.41.12 (17-May-2010)
> > dumpe2fs: Bad magic number in super-block while trying to open /dev/sda6
> > Couldn't find valid filesystem superblock
>
> That's expected, if sda6 is encrypted actually and VG vg_dubby is built
> out of the encrypted PV (and the fs is found only on the LVs).
> That doesn't answer the questions, however.
>
> What I wondered is what dumpe2fs output you get for lv_home and lv_root?
> Since according to the quotes in your original post, LVM was able to
> construct the VG and the LVs after you had opened the underlying LUKS
> device (sda6 aka "crypt1"). It wouldn't be able to do so, if opening
> and creating the crypt1 mapper device failed.
>

[root at localhost /]# dumpe2fs /dev/vg_dubby/lv_home
dumpe2fs 1.41.12 (17-May-2010)
dumpe2fs: Bad magic number in super-block while trying to open
/dev/vg_dubby/lv_home
Couldn't find valid filesystem superblock.

[root at localhost /]# dumpe2fs /dev/vg_dubby/lv_root
dumpe2fs 1.41.12 (17-May-2010)
dumpe2fs: Bad magic number in super-block while trying to open
/dev/vg_dubby/lv_root
Couldn't find valid filesystem superblock.
[root at localhost /]#




>
> Intersting case though. ;)
>
> > /dev/sda6 is the encrypted PV.  It holds VG_dubby.
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