Re: A Newbie LVM Question
On Wed, Mar 03, 2004 at 09:37:06AM +0100, Erich Waelde wrote:
Content-Description: message body text
>
> Hi,
>
> stan <stanb@panix.com> wrote:
>
> > I've played with LVM on HP-UX, but only just enough to get a firm
> > handle on the fact that I don't understand the complexities of it,
> > and that is easy to screw up, but hard to fix :-)
> >
> > So, I find myself building a Debian MytTV machine. In addition
> > to the 40G root drive, I installed 2 other drives, a 60G (/dev/hdb),
> > and a 120G (/dev/hdd).
> >
> > What I want to do is create one large "virtual disk" out of these,
> > then I will then create a XFS filesystem on and use to store various
> > multimedia files for mythtv. I want the disks to be "striped" if
> > that is possible with different size disks?
> >
> > I've installed the lvm (1) packages, and I've read the HOWTO.
> > Here is what I came up with:
> >
> > fdisk both disks, creating a single partition on each one of type 8e
> >
> > pvcreate /dev/hdb1
> > pvcreate /dev/hdd1
> >
> > vgcreate mythtv /dev/hdb1 /dev/hdd1
> >
> > And then I should be ready to create a filesystem on this "virtual
> > disk".
>
> Not quite. You need to run
>
> lvcreate -L <size> -n <name> <vgname>
> e.g.
> lvcreate -L 180 GB -n lvol1 mythtv
>
Well, that did not go as well as expected :-(
The 2 pvcreates worked fine, but the vgcreate reurned an error:
root@mythtv2:~ # vgcreate mythtv /dev/hdb1 /dev/hdd1
vgcreate -- INFO: using default physical extent size 32 MB
vgcreate -- INFO: maximum logical volume size is 2 Terabyte
vgcreate -- ERROR "lvm_tab_read(): size" inserting volume group "mythtv"
into "/etc/lvmtab"
What do I need to do now?
--
"They that would give up essential liberty for temporary safety deserve
neither liberty nor safety."
-- Benjamin Franklin
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