Sparse

Links

• Sparse file
• Sparse File

Storage_full

HOWTO

Check sparse file

Compare:

ls -lh myfile
du -sh myfile

Or

dd seek=10G if=/dev/zero of=sparsetest bs=1 count=1 status=none
du --block-size=1 sparsetest

8192 sparsetest

du --block-size=1 --apparent sparsetest

10737418241 sparsetest

If these outputs are very different, sparse is supported :)

Copy sparse file

rsync -S