Rapid Recovery 6.4 - User Guide

Working with Linux recovery points

Mounting a recovery point volume on a Linux machine

1. Create a new directory for mounting the recovery point (for example, you can use the mkdir command).
2. Verify the directory exists (for example, by using the ls command).
3. Run the Rapid Recovery local_mount utility as root, or as the super user, for example:

   	sudo local_mount

4. At the Rapid Recovery mount prompt, enter the following command to list the protected machines.

   	lm

5. When prompted, enter the IP address or hostname of your Rapid Recovery Core server.
6. Enter the logon credentials for the Core server, that is, the user name and password.

   A list of the machines that are protected by the Rapid Recovery server displays. Each machine is identified by the following: line item number, host/IP address, and an ID number for the machine.

   For example: 7d658e5f-fa08-4600-95f0-5f486bc1b6a4#de0896fd-571a-4cc5-aeed-264d2c3c72f4#f377e145-dd4d-3ac3-5b15-37ce8f4913ba

7. Enter the following command to list the recovery points that are available for a specified machine:

   	lr <line_number_of_machine>

   NOTE: You can also enter the machine ID number in this command instead of the line item number.

   A list of the base and incremental recovery points for the machine appears. The list includes the line item number, date and timestamp, location of volume, size of recovery point, and an ID number for the volume, which includes a sequence number at the end to identify the recovery point.

   For example, 7d658e5f-fa08-4600-95f0-5f486bc1b6a4#de0896fd-571a-4cc5-aeed-264d2c3c72f4#f377e145-dd4d-3ac3-5b15-37ce8f4913ba:2

8. Enter the following command to select and mount the specified recovery point at the specified mount point/path.

   	m <volume_recovery_point_ID_number> <volume-letter> [flag] <path>

   The flag in the command determines how to mount the recovery point. You can use one of the following options:

   [r] - mount read-only (default). This flag lets you mount a recovery point but does not let you make changes to it.

   [w] - mount writable. This flag lets you mount the recovery point and lets you make changes.

   [v] - mount with previous writes. Mounting with the “v” flag lets you mount the recovery point and include any changes that were made during the previous writable mount but are not present in the recovery point.

   [n] - do not mount nbd to <path>. A nbd (network block device) makes a socket connection between the Core and the protected machine when you perform a local mount. This flag lets you mount the recovery point without mounting the nbd, which is useful if you want to manually check the file system of the recovery point.

    

   NOTE: You can also specify a line number in the command instead of the recovery point ID number to identify the recovery point. In that case, you would use the machine line number (from the lm output), followed by the recovery point line number and volume letter, followed by the path, such as, m <machine_line_number> <recovery_point_line_number> <volume_letter> <path>. For example, if the lm output lists three protected machines, and you enter the lr command for number 2 and you mount the twenty-third recovery point volume b to /tmp/mount_dir, then the command would be: m 2 23 b /tmp/mount_dir.

   NOTE: If you are mounting a BTRFS volume from a compatible operating system (see the "Rapid Recovery release 6.4 operating system installation and compatibility matrix" topic in the Rapid Recovery 6.4 System Requirements Guide), then you must include the following parameter: mount -o nodatasum,device=/dev/xxx /dev/xxx /mnt/yyy

9. To verify that the mount was successful, enter the following command, which should list the attached remote volume:

   	l

Unmounting a recovery point on a Linux machine

1. Run the Rapid Recovery local_mount utility as root, or as the super user, for example:

   		sudo local_mount

2. At the Rapid Recovery mount prompt, enter the following command to list the protected machines.

   		lm

3. When prompted, enter the IP address or hostname of your Rapid Recovery Core Core server.
4. Enter the logon credentials (user name and password) for the Core server.

   A list of the machines that are protected by the Rapid Recovery Core server displays.

5. Enter the following command to list the recovery points that are available for a specified machine:

   		lr <line_number_of_machine>

   Note: Note that you can also enter the machine ID number in this command instead of the line item number.

   A list of the base and incremental recovery points for the machine will display and includes. The list includes the line item number, date and timestamp, location of volume, size of recovery point, and an ID number for the volume that includes a sequence number at the end, which identifies the recovery point.

   For example: 7d658e5f-fa08-4600-95f0-5f486bc1b6a4#de0896fd-571a-4cc5-aeed-264d2c3c72f4#f377e145-dd4d-3ac3-5b15-37ce8f4913ba:2

6. Run the l or list command to obtain a list of mounted Network Block Device (NBD)-devices. If you mount any recovery point, you will get a path to NBD-device after executing the l or list command.
7. Enter the following command to unmount a recovery point.

    unmount <path_of_nbd-device>

8. Run the l or list command to verify that the unmount of the recovery point was successful.

Forcing a snapshot

• A base image is a snapshot of all data on the selected volumes of the machine.
• An incremental snapshot captures all data that has been changed since the last snapshot.