Resize loop back image

Resize loop back image

du -m loop-back-image.img -> 300

Meaning its 300 mb in size. Now to resize we simply append zeroes to the end of fs and then resize it.

dd if=/dev/zero of=loop-back-image.img bs=1M seek=300 count=100

seek=300 : Means “seek” to 300th mb count=100 : Means add 100 of 1Mb resulting a total size of 400mb

Now we run resize2fs on it.

resizee2fs loop-back-image.img

To shrink one can do almost similar stuff:

dd if=/dev/zero of=loop-back-image.img bs=1M seek=200 count=0