There are two ways to do things: one is: lvcreate -n test testvg -l100000 /dev/sda1:0-31 /dev/sdb1:0-31 /dev/sdc1:0-31 /dev/sda1:32-63 /dev/sdb1:32-63 /dev/sdc1:32-63 .... another is: lvcreate -n test testvg -l32 /dev/sda1 lvextend /dev/testvg/test -l+32 /dev/sdb1 lvextend ..... I found the second way can't work when the size of lv is big enough (about 26G) it complains about metadata size is too big. But I thinks the disk usage should be the same. why is metadata size diffrent? _______________________________________________ linux-lvm mailing list linux-lvm@redhat.com https://www.redhat.com/mailman/listinfo/linux-lvm read the LVM HOW-TO at http://tldp.org/HOWTO/LVM-HOWTO/