hi I have tried one lvm command I want some clarification lvdisplay -v /dev/vg/lv1 It dispalys the information along with reads and writes What that actually means 1. Is it no read operations ,I think is not 2 Is it no of blocks read 3 Is it data read in terms of sector Is it possible to get the no of io operations on the logical volume I am using LVM1 Thanks Sachin. _______________________________________________ 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/