LVM partitions on ax external USB HD
John Austin
ja at jaa.org.uk
Tue Apr 12 10:07:43 UTC 2005
On Tue, 2005-04-12 at 09:22 +0200, Antonio Montagnani wrote:
> Rick Wagner ha scritto / wrote il / on 12/04/2005 00:53:
>
> >On Sunday 10 April 2005 2:34 am, Antonio Montagnani wrote:
> >
> >
> >>I tried to install Fedora on an external USB HD.
> >>Of course booting from it didn't work.
> >>On the disk there are an ext3 partition /boot and a LVM partition
> >>If I connect the HD to a PC as USB device it is correctly mounted but I
> >>see only the ext3 partition.
> >>How can I see also the LVM???
> >Since no one else has answered, I'll take a stab. I have used LVM on several
> >permanent hard drives, but never on removables. However I think what your
> >looking to do is a udev script. Check out the information on udev. Also
> >look for hotplug.
> >
> >What you'll want your script to do is upon detecting the plugging of your USB
> >drive, it will want to scan (vgscan/lvscan) the drive for LVM volumes, then
> >activate the volume (vgchange/lvchange --available=yes).
> >
> >I'm not sure what you want to do for unplugging. I expect that you'll need a
> >script to flush then deactivate the volumes prior to pulling the plug on the
> >drive.
> >
> >As I said, I don't know much about hotplug and udev, but this may give you
> >some additional search hints.
> >
> > --rick
> Rick,
>
> Tnx for you reply.
>
> There are two separate issues:
>
> 1) how to manage a LVM partitioned removable device (USB hard disk, key
> etc.): does it make any sense to have them partitioned as LVM??
> 2) how to install Fedora on a removable device (USB hard disk, for
> example) and boot off it (with Grub installed on it, in order to have a
> removable Fedora installation for every occasion)
>
> I have not enough skill to solve them. Any idea??
>
> --
> Antonio M.
Hi
I may be able to help with the second question
I have a pdf document which I can email direct if you want
Let me know
John
>
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