Hello all, I wanted to test LVM with loopdevice, but I experience some problems. Here there are : # vgscan vgscan -- reading all physical volumes (this may take a while...) vgscan -- "/etc/lvmtab" and "/etc/lvmtab.d" successfully created vgscan -- WARNING: This program does not do a VGDA backup of your volume group # dd if=/dev/zero of=/tmp/vdisk0 bs=50M count=1 # losetup /dev/loop0 /tmp/vdisk0 # pvcreate /dev/loop0 pvcreate -- physical volume "/dev/loop0" successfully created # vgcreate VG_home /dev/loop0 vgcreate -- INFO: using default physical extent size 4 MB vgcreate -- INFO: maximum logical volume size is 255.99 Gigabyte vgcreate -- doing automatic backup of volume group "VG_home" vgcreate -- volume group "VG_home" successfully created and activated [root@satellite root]# lvcreate -L40M -n LV_admins VG_home lvcreate -- doing automatic backup of "VG_home" lvcreate -- logical volume "/dev/VG_home/LV_admins" successfully created [root@satellite root]# mke2fs -j /dev/VG_home/LV_admins mke2fs 1.34 (25-Jul-2003) Filesystem label= [...] Writing inode tables: done Creating journal (4096 blocks): done [root@satellite root]# dumpe2fs /dev/VG_home/LV_admins dumpe2fs 1.34 (25-Jul-2003) dumpe2fs: Bad magic number in super-block while trying to open /dev/VG_home/LV_admins Couldn't find valid filesystem superblock. Impossible to mount the FS too! I am using a 2.4.22-1.2174.nptl on a Fedora Core 1.& lvm-1.0.3-13 = I read that it should be a good idea to upgrade lvm, so I installed lvm-1.0.5-1.i386.rpm for Red Hat Contrib, but it still the same. Do you have an idea ? Where I went wrong ? Thanks for your help, Vincent
