On 07/29/2011 06:35 PM, Jewsco Pius Jacquez wrote: > I’m sorry, I mean the first 384 sector. It's space reserved for lvm2 data used to manage the volume; This part of the device contains the LVM2 label and metadata area. (it's before the first physical extent in the volume). > I am using RHEL5.6 kernel 2.6.18-238.12.1.el5 and have lvm2-2.02.74-5.el5. Here > is my lvm.conf. > > Can an application data exist here? Like oracle data.. Not generally but lvm2 does not necessarily write to every location in this region when initialising a new device so if there was existing data on the device when pvcreate/vgcreate ran it will not have been overwritten. > For instance, if I dd out from a PV with bs=512 and count=384 and I saw oracle > data on it, is this ok? It's not possible to say with this information - has oracle been configured to use the whole disk? If so then that's an error but if the data you are seeing is just "stale" data from a previous use of the device it's not going to cause any problems. Regards, Bryn. _______________________________________________ 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/
