Harri Haataja wrote: > On Wed, Dec 12, 2001 at 06:16:31PM +0200, Mika Lansirinne wrote: > > I was trying to use a loop device(s) for LVM. In the pvcreate man-page it is > > said that a PV can also be a loopback file. That also seem to work correct. > > But when I try to create a VG on that I get: > > > > [root@arthur /tmp]# vgcreate tmpvg /dev/loop0 > > vgcreate -- no valid physical volumes in command line > > I didnt bother to look deep into those messages but first though that > came into my mind is that you didn't mention losetup. You did this? Sorry, probably should have mentioned that to be complete. I indeed did use losetup first. (And I can create filesystem to that and can mount that. No problem with the loop device itself). These are the steps I have done: dd if=/dev/zero of=lvm-file bs=1M count=XX losetup /dev/loop0 lvm-file pvcreate /dev/loop0 => pvcreate -- physical volume "/dev/loop0" successfully created vgcreate tmpvg /dev/loop0 => vgcreate -- no valid physical volumes in command line -Mika -- Mika Länsirinne, System Manager / Research Engineer, M.Sc. (E.E.) Helsinki University of Technology Electronic Circuit Design Laboratory P.O. Box 3000 Email: mla@ecdl.hut.fi FIN-02015 HUT Tel: +358 9 451 2277 Finland Fax: +358 9 451 2269
