On Mon, 14 Feb 2005, Shawn Fertch wrote: > [root at netman etc]# vgcreate /dev/vg01 /dev/md4p1 > vgcreate -- no valid physical volumes in command line Do you have a md4p1 device? AFAIK, you're not supposed to put partitions on md devices, although it is possible. Looking at /dev/ seems to agree with this: brw-rw---- 1 root disk 9, 0 Mar 10 2004 md0 brw-rw---- 1 root disk 9, 1 Mar 10 2004 md1 brw-rw---- 1 root disk 9, 2 Mar 10 2004 md2 There's no gap between the minor numbers like there are for disk devices: brw-rw---- 1 root disk 8, 0 Mar 10 2004 sda brw-rw---- 1 root disk 8, 16 Mar 10 2004 sdb brw-rw---- 1 root disk 8, 32 Mar 10 2004 sdc sda1 would be major 8 minor 1, sda2 would be major 8 minor 2, etc. In any case, if you just use md4, should work fine. -- Nate Carlson <natecars at real-time.com> | Phone : (952)943-8700 http://www.real-time.com | Fax : (952)943-8500