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</o:shapelayout></xml><![endif]--></head><body lang=EN-US link=blue vlink=purple><div class=WordSection1><p class=MsoNormal>Hi-<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>Is it safe to use the zerofree utility on an ext4 partition inside an LVM with guestfish? I know zerofree works on ext4, but I am unsure about LVM. The info page uses the syntax “zerofree <device>”, so using the info page example, could I (safely) do something like the following?<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>$ guestfish<o:p></o:p></p><p class=MsoNormal> <o:p></o:p></p><p class=MsoNormal> Welcome to guestfish, the libguestfs filesystem interactive shell for<o:p></o:p></p><p class=MsoNormal> editing virtual machine filesystems.<o:p></o:p></p><p class=MsoNormal> <o:p></o:p></p><p class=MsoNormal> Type: 'help' for a list of commands<o:p></o:p></p><p class=MsoNormal> 'man' to read the manual<o:p></o:p></p><p class=MsoNormal> 'quit' to quit the shell<o:p></o:p></p><p class=MsoNormal> <o:p></o:p></p><p class=MsoNormal> ><fs> add disk.img<o:p></o:p></p><p class=MsoNormal> ><fs> run<o:p></o:p></p><p class=MsoNormal> ><fs> list-filesystems<o:p></o:p></p><p class=MsoNormal> /dev/sda1: ext4<o:p></o:p></p><p class=MsoNormal> /dev/vg_guest/lv_root: ext4<o:p></o:p></p><p class=MsoNormal> /dev/vg_guest/lv_swap: swap<o:p></o:p></p><p class=MsoNormal> ><fs> zerofree /dev/vg_guest/lv_root<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>Thanks for any light you can shed on this.<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>-Ben<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p></div></body></html>