I'm currently testing a backup/restore of RHEL 6.4 OS via the "dump" and "restore" on testing environment, and I do know that RHEL 6.4 seemed too outdated in nowadays. Butsome enterprises are still using such version of RHEL to load their services.
Here's the scenario: to backup the system and critical programs in case of host crash/failure event.
- The test RHEL 6.4 host for backup utilizes windows Hyper-V VM as infrastrucure and the OS root is installed on LVM logical volume.
- In order to backup the system, I placed system into single user mode and used command to backup the root filesystem
dump -0uf /<path_to_a_second_storage_to_store_dump>/mybackup.dump /
- The dump showed "DUMP IS DONE" on screen and the dump file was created with size about 2.2GB therefore I believed that the backup was successful.
In order to simulate host crash event, I reinstalled the RHEL 6.4 system utilizing LVM logical volume and boot the system into single user mode before restoration.
However, after restoring root filesystem using
restore -rf /<path_to_a_second_storage_to_store_dump>/mybackup.dump
The screen showed kernel panic and some other errors, and hung eventually.
I retried several times but always failed.
Can anyone give me some hints why the restoration can't be completed?