Trying to read linux-lvm on 11.0-RC2 using geom, bhyve, fail.

[Allan Jude]

On 2016-09-15 01:10, Zaphod Beeblebrox wrote:
> I'm converting some Xen/Debian/Windows domain servers to
> FreeBSD/Bhyve/Samba domain servers. Windows is still required for a couple
> of applications, but I've recently had enough success with Samba4 to try
> this.  Not the problem.
> 
> The machines have two disks (was RAID-1 before, will be RAID-1 after) and
> I've run the FreeBSD install on one disk leaving the other alone.  I'd like
> to copy off some of what's on the other disk, so I set about trying to read
> it.
> 
> BHYVE ATTEMPT
> 
> Believe-it-or-not, I tried bhyve first.  Being the more complex solution,
> of course.  I tried booting the other disk in bhyve.  I chalked that
> failure up to it still being a Xen config... wasn't sure how that would
> boot for fail under bhyve... so I grabbed a debian live CD from the net and
> tried to boot it.
> 
> Now, I'm following the directions from
> https://www.freebsd.org/doc/handbook/virtualization-host-bhyve.html ...
> 
> And the error both times was failing to find init.  Both booting the CD
> _and_ booting the disk.
> 
> I can't seem to find any further documentation on my problem.  Linux boots
> to it's initrd filesystem state and fails to leave it because it (claims
> it) can't find /sbin/init (even though in the CD case, it's there)
> 
> GEOM ATTEMPT
> 
> After this fail, I decided I didn't really _need_ to run linux here and I
> discovered 'geom_linux_lvm.ko' ... cool.  But fail, too.  Doesn't emit any
> messages.  I even enabled the debug messages for it.
> 
> The linux disk is partitioned thusly:
> 
> =>        63  1953525105  ada1  MBR  (932G)
>           63        1985        - free -  (993K)
>         2048  1953523120     1  linux-data  [active]  (932G)
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Are you using zvols to back the VMs? Make sure they are in 'volmode=dev'
not 'geom' (the default), or GEOM will lock the device when it detects a
partition table being written to the zvol (from the installer inside the VM)

Note that this setting requires you to export/import the pool or reboot
to apply.

-- 
Allan Jude

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