hi Is there an api available today or an example how to perform the below OS commands in C using a function or api instead of system calls? 1. create an unique uid on the server, and store it on the PV disk # pvcreatue -u <generated uid> <your device> 2. create the LVM metadata backup content (as /etc/lvm/backup/...) - add PV uid generated above as there is no parameter to save the data to a device - add unique VG - add exactly 1 contiguous LV 3. save LVM metadata to the PV disk as the OS command does # vgcfgrestore VG Can this be done by instead of using system() calls, instead using native C commands either via an API or other methods? the examples for bd_lvm_pvcreate() in libblockdevapi for example does not say how to add -u flag and I couldn’t find any vgcfgrestore there too? besides this, I found it strange why pvcreate -u is needed at all? would be better to have a <dev> parameter directly to the vgcfgrestore command instead looking forward to hearing from you soon again regards Tomas Sent from my iPhone _______________________________________________ linux-lvm mailing list linux-lvm@xxxxxxxxxx https://www.redhat.com/mailman/listinfo/linux-lvm read the LVM HOW-TO at http://tldp.org/HOWTO/LVM-HOWTO/