Hi Kevin, On Thu, Nov 10, 2016 at 09:12:58AM +0200, Kevin Wilson wrote: > Is it safe to extend a mounted partition ? Yes, if the tool you would use without LVM (e.g. resize2fs) is safe for that. LVM just uses the appropriate tool, in your case resize2fs, which can handle on-line resize. > If I try it I get: > "on-line resizing required" message, which I am not sure what it means. It means that resize2fs has detected that the device is mounted and so is doing an on-line resize. It is merely informational. That message comes from resize2fs and so this is not really an LVM question. As you can see… > lvextend --size +20G --resizefs /dev/mapper/vg_paeiserver5-lv_my_partition > Extending logical volume lv_ubuntu to 34.00 GiB > Logical volume lv_ubuntu successfully resized …from this point on the output comes from the resize2fs program. > resize2fs 1.42.9 (4-Feb-2014) > Filesystem at /dev/mapper/vg_paeiserver5-lv_my_partition is mounted on > /; on-line resizing required > old_desc_blocks = 1, new_desc_blocks = 3 > The filesystem on /dev/mapper/vg_paeiserver5-lv_my_partition is now > 8912896 blocks long. Cheers, Andy _______________________________________________ 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/