LVM2 on a loopback device
Create a 5GB file
here
Commands
519 dd if=/dev/zero of=vol1.img bs=1M count=100
520 dd if=/dev/zero of=vol2.img bs=1M count=100
521 man losetup
522 losetup -f
523 losetup -f /dev/loop1 vol1.img
524 losetup /dev/loop1 vol1.img
525 losetup -f
526 losetup /dev/loop2 vol2.img
527 pvcreate /dev/loop1 /dev/loop2
528 vgcreate fastgroup /dev/loop1 /dev/loop2
529 lvcreate -i2 -l 2 -n fastvol fastgroup
530 mount /dev/fastgroup/fastvol
531 mount /dev/fastgroup/fastvol /mnt
532 mount -t lvm /dev/fastgroup/fastvol /mnt
533 mount -t ext3 /dev/fastgroup/fastvol /mnt
534 file /dev/fastgroup/fastvol
535 file /dev/mapper/fastgroup-fastvol
536 cfdisk /dev/mapper/fastgroup-fastvol
537 mkfs.ext3 -v /dev/mapper/fastgroup-fastvol
538 mount -t ext3 /dev/fastgroup/fastvol /mnt
539 cd /mnt
540 l
541 df -lha
542 dd if=/dev/zero of=8M bs=1M count=8
543 dd if=/dev/zero of=8M bs=1M count=7
544 dd if=/dev/zero of=8M bs=1M count=6