Volumes in VG2 will be empty of data after restoration Solution If you want to map and restore this volume group automatically, your target must also contain at least four physical disks, because restoration of VG1 will also restore the structure for VG2, even though data from this second group is not contained in the backup. Your critical system data is covered completely by VG1 and two physical disks, so you only select only volumes in this group during backup. This means that the target system for restoration must contain the same or greater number of physical disks as the source system in order to fit the entire structure.įor example, your server contains two volume groups, VG1 and VG2 on four physical disks. When creating automatic mapping (step 12) of LVM volumes during restoration, the whole structure is also restored, even when restoring data for a smaller amount of volumes.Since the logical volume structure is backed up in its entirety, selecting just one LVM volume out of many for backup means the volume structure of unselected volumes is still backed up.In practice, this design leads to the following limitations:
This volume structure is kept as separate meta-data in the backup archive and is always used a whole. When selecting logical volumes for backup, the entire logical volume structure will always be saved to the backup along with the volume data contents. This article details aspects of LVM backup and recovery with Acronis Cyber Protect, Acronis Cyber Backup and Acronis Backup 11.7/11.5Īcronis products that support Linux systems for backup and recovery have a few particularities when working with logical volumes such as MD devices and LVM structures.
0 kommentar(er)
