Resize backup harddrive

Article sections

    1. If the partition the file system is on is currently mounted, unmount it.
      For example umount /dev/vdb1
    2. Run fsck on the unmounted file system.
      For example

      e2fsck /dev/vdb1
      e2fsck 1.41.12 (17-May-2010)
      Pass 1:Checking inodes, blocks, and sizes
      Pass 2:Checking directory structure
      Pass 3:Checking directory connectivity
      Pass 4:Checking reference counts
      Pass 5:Checking group sumary information
      ext4-1:11/131072 files (0.0% non-contiguous),27050/524128 blocks
    3. Resize the file system with the resize2fs /dev/[device]
      For example

      resize2fs /dev/vdb1
      resize2fs 1.41.12 (17-May-2010)
      Resizing the filesystem on /dev/vdb1 to 524128 (1k) blocks.
      The filesystem on /dev/vdb1 is now 524128 blocks long.
      Accepted size units for file system block sizes are:
      S - 512 byte sectorsK - kilobytesM - megabytesG - gigabytes
    4. Mount the file system and partition.
      For example mount /dev/vdb1 /ext4-1
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