Selecting logical volumes and MD devices in command line

Let’s assume that the system has four physical disks: Disk 1, Disk 2, Disk 3 and Disk 4.

  • A RAID-1 volume is configured on two basic volumes: sdb1, sdd1
  • A logical volume is configured on two basic volumes: sdb2, sdd2
  • Disk 1 includes Acronis Secure Zone, which normally is not backed up.

A list of a volumes can be obtained with the following command: 

  trueimagecmd --list  
  
  Num  Partition            Flags       Start      Size       Type
  ---- -------------------- ----------- ---------- ---------- -----------
  Disk 1 (sda):
  1-1  sda1                 Pri,Act     63         208813     Ext2
  1-2  sda2                 Pri         417690     12289725   ReiserFS
  1-3  sda3                 Pri         24997140   1052257    Linux Swap
       Unallocated                      27101655   2698920    Unallocated
  1-4  Acronis Secure Zone  Pri         32499495   522112     FAT32
       Unallocated                      33543720   5356       Unallocated
  Disk 2 (sdb):
  2-1  sdb1                 Pri         62         124969     Ext2
  2-2  sdb2                 Pri         250001     125000     None
       Unallocated                      500001     8138607    Unallocated
  Disk 3 (sdc):
       Table                            0                     Table
       Unallocated                      1          1048575    Unallocated
  Disk 4 (sdd):
  4-1  sdd1                 Pri         62         124969     Ext2
  4-2  sdd2                 Pri         250001     125000     None
       Unallocated                      500001     798575     Unallocated
  Dynamic & GPT Volumes:
  DYN1  VolGroup00-LogVol00                        245760     Ext3
                            Disk: 3     250385     245760
                            Disk: 5     250385     245760
  DYN2  md0                                        124864     Ext2
                            Disk: 5     62         249728
                            Disk: 3     62         249728

The logical volume, DYN1, occupies basic volumes 2-2 and 4-2. The RAID-1 volume, DYN2, occupies basic volumes 2-1 and 4-1.

To back up the logical DYN1 volume, run the following command (here, the name of the backup is assumed to be /home/backup.tib): 

  trueimagecmd --partition:dyn1 --filename:/home/backup.tib --create

To back up the RAID-1 volume DYN2, run the following command: 

  trueimagecmd --partition:dyn2 --filename:/home/backup.tib --create

To back up all three hard disks with volumes, select the volumes 1-1, 1-2, 1-3, DYN1 and DYN2: 

  trueimagecmd --partition:1-1,1-2,1-3,dyn1,dyn2 --filename:/home/backup.tib --create

If you select Disk 3, volume 2-1 or volume 2-2, the program will create a raw (sector-by-sector) backup.

Selecting logical volumes and MD devices in command line