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NetVault Bare Metal Recovery 10.5 - User Guide for Plug-ins

Introducing Dell™ NetVault™ Bare Metal Recovery Plug-ins Deploying NetVault Bare Metal Recovery Using the Plug-in Offline Client Using Plug-in Live Client for Windows® Using Plug-in Live Client for Linux® NetVault Bare Metal Recovery physical-to-virtual recovery Troubleshooting

Accommodating for Raw disks

Multiple sections of this guide have noted that the Plug-in Live Client for Linux® does not support the backup and restore of Raw format disks. However, after the standard boot process discussed in the previous section is fully followed, any Raw format disks are automatically initialized, and the restore of data starts. As a result, any data that exists on these raw format disks is lost. To boot a target Linux NetVault Bare Metal Recovery Client that contains any Raw format disks to omit them from the restore, perform the following steps:
WARNING:This procedure must be followed to ensure that data items on any existing raw formatted disks are preserved. Dell cannot be held liable if this procedure is not followed to boot a machine containing raw disks and data is lost.
IMPORTANT: The process described in Restoring data must be followed before attempting this configuration. If the DR backup job has not been initially queued up to run, it is not possible to complete this process; that is, this configuration must be performed after the job has been started in the NetVault Backup WebUI.
Perform Step 1 through Step 9 outlined in Boot procedure; do not complete the process (do not perform Step 10 and Step 11).
After returning to the System Installation and Maintenance dialog box, use the arrow keys to navigate to the View/Change Installation Settings option, and press Enter.
When the Change Installation Settings Menu dialog box appears, press Enter to select the default option, Select Disks to Use for Installation.
After the dialog box updates with a frame containing a list of disks that are currently available on the target system, use the Arrow keys to select the disk to leave out of the restore (the Raw partition formatted disk), and press Enter to select it.
After the frame updates to display a list of available options for the selected disk, use the Arrow keys to select the DO NOT RESTORE the Disk Backup Data option, and press Enter to select it.
IMPORTANT: Before selecting the DO NOT RESTORE This Disk Backup Data option for a drive, ensure that the selected drive is the one to omit. After the drive has been omitted from the restore, it cannot be added back in; that is, the only way to change the configuration is to reboot the Linux NetVault Bare Metal Recovery Client, and restart this entire process.
With the applicable disks omitted from the recovery, press Esc or F3 twice to return to the System Installation and Maintenance dialog box.
The informational fields in the lower-left corner are updated to reveal the values entered; that is, the Service field is updated to reveal the IP address entered for the NetVault Backup Server.
Use the arrow keys to navigate to the Install the System with Current Settings option, and press Enter to initiate the job.

Monitoring job progress and finalizing a recovery

From the NetVault Backup Server, you can monitor the progress of any job through the Job Status page. While it is not necessary to monitor a job’s progress, Dell recommends that you monitor progress when performing a recovery of a NetVault Bare Metal Recovery Client. After the recovery of a Linux® NetVault Bare Metal Recovery Client has completed, you must perform a last task to bring it back online. By monitoring the recovery job, you are alerted to the completion of a job and this final task can be performed.
NOTE: This section offers an example of the use of the Job Status page of the NetVault Backup WebUI for monitoring the progress of a Linux DR recovery operation to finalize the job. The tools made available in this dialog box are not exclusive to the Plug-in Live Client for Linux and complete information on their use can be found in the Dell NetVault Backup Administrator’s Guide.
With the recovery job running, click Monitor Job in the Navigation pane.
IMPORTANT: If you need to stop the job, you can also access the Abort command the same way. If you use this command to stop a recovery job, NetVault Backup stops the transfer of data. However, the System Installation for Linux application currently running on the Linux NetVault Bare Metal Recovery Client stalls and its commands, while still accessible are not usable. A full reboot of the Linux NetVault Bare Metal Recovery Client must be performed with the CD inserted in the drive to reactivate the application for use.
Various information pertaining to the selected job is displayed, including the plug-in in use and data-transfer-rate values. The Run Status field displays the status of the job (for example, Waiting for Media or Reading from Media). As the recovery finishes, data transfer values stop and this field is updated to Restore Complete.
To complete the recovery process, locally access the Linux NetVault Bare Metal Recovery Client machine, and reboot it by using the Reboot the System command in the System Installation for Linux application (type exit at the maintenance shell prompt, or manually shut down the system).

"Superblock last…" messages appear during fsck process

Use the Storix® media to boot the target client.

Completing post-restore requirements

After a restore process completes on a target Linux® Client, the following points apply to that machine:
The “hosts” file for the Target is modified: A restore modifies the target NetVault Bare Metal Recovery Client machine’s entry in its “…/etc/hosts” file; for example, after recovery, the host name does not appear along with the IP address and the alias for this client in the “…/etc/hosts” file. The machine is still accessible through its IP address, but for it to be accessible through its host name, this file must be edited to incorporate the appropriate host name information. For information on this “hosts” file and how it should be edited to include the proper host name for the target Linux machine, see the relevant Linux documentation.
Perform a restore of the modified files backup (if applicable): With the recovery completed, you can now restore the files backed up in the Plug-in for FileSystem backup described in Prerequisites. This process restores these files to their state before the DR recovery.
Change to boot loader application: If running a version of the Linux boot loader utility other than GRUB, after a DR image is recovered on a target Linux Client, the boot loader utility is replaced with the GRUB version of this application.
GRUB entries: Storix® never assumes that you are reinstalling onto the same physical hardware or restoring to the same storage configuration. Therefore, it is never guaranteed that the previous GRUB entries are valid. The only GRUB entry guaranteed to be valid after restore is the entry created by Storix.
Change in the start-end sector location for a DR restore: After a recovery of a DR image, the start-end sector for a restored partition may be different from its original backed-up location. The partition size remains the same size, but no unallocated space is created after the Master Boot Record. Therefore, some boot loaders (for example, GRUB) are not usable, because they require this additional, unallocated space. This requirement is because the Linux Loader (LILO) version of the boot loader utility that is automatically established after a recovery (as explained in the previous point) does not require this unallocated space.
Change to swap partition: During a recovery, the NetVault Bare Metal Recovery for Linux module implicitly modifies the “/etc/fstab” file entry for the swap partition.
File-system checking is enabled: A restore modifies the “Maximum mount count” and “Check interval” parameters, which enable file-system checking. For systems that should not have these parameters enabled based on the number of mounts or a specific period, use the following commands to disable the options manually:
# tune2fs -c -1 <deviceName>
# tune2fs -i 0 <deviceName>
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