Re: Fedora - specialities - was: Re: [Xen-users] Booting Jailtime Centos Image

[Gerd Hoffmann <kraxel@xxxxxxx>]

Henning Sprang wrote:
> Also a Fedora-speciality: They generally use a file as a full block
> device. In this block device, they don't directly put a filesystem, but
> they add a partition table in there, and in this again create partitions.

I do that too, so I end up with only one lvm volume per vm instead of
one volume per partition.

> But I also didn't yet succeed to mount this as a loopback device,
> because there simply is no device file on the system for these "inner"
> partitions. And I didn't find how to create one.

kpartx (part of multipath tools) can create device mapper mappings for
dos partitions on any block device.

losetup also has a offset switch, that way it should be possible too to
mount filesystems starting somewhere in the middle, at least for image
files.

cheers,

  Gerd.

-- 
Gerd Hoffmann <kraxel@xxxxxxx>

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