Hi, Thanks for kind words and excuse me. I must have got confused with initial lines of the package description by ovelooking a word "non-zeroed" and saw this bug report to get myself more confused.
Here is my comment | Zerofree finds the unallocated, non-zeroed blocks in an ext2 or ext3 | file-system and fills them with zeroes. This is precise. (assuming "," being "and") If you were a bit wordy with additional clarification, Non-native speaker had easier time :-) Something along ... | Zerofree finds the unallocated blocks with non-zero value contents in | an ext2 or ext3 file-system and fills them with zeroes. It does not | touch unallocated blocks with zero value contents at all. Then even without reading rest of the package description (or manpage), its advantage and functionality were clear. > I have _tested_ the software and _read_ the code, it does what it > claims. On the other hand, it doesn't _decrease_ the disk image size > either. Read on. Thanks pointing out. Please read on, too. >> When reading http://intgat.tigress.co.uk/rmy/uml/index.html, I learn >> this "zerofree" command togeher with "sparsify" command available from >> http://intgat.tigress.co.uk/rmy/uml/sparsify.c . But this points out >> that zerofree grows file size. This beat the purpose for me. Again, this is false statement by me after my confusion. This site properly describes advantage of zerofree. Excuse me. > I have not looked in detail at what sparsify does. My understanding is > that sparsify is the one which reduces file size. sparsify is useless > for me since I use the virtual box utilities for that, and I haven't > given enough thought to determine whether sparsify would do the right > thing on a virtualbox disk image. You talk about "a secondary utility" in the package description and now explains it as "I use the virtual box utilities for that". I can only think of "cp --sparsify=always ..." in the host system to copy such zerofreeed image file and cut down its size. Can you elaborate what utility are you using somewhere (manpage README ...). You seem to suggest hole-punching is done from within virtual box. Thanks in advance. Osamu -- To UNSUBSCRIBE, email to [email protected] with a subject of "unsubscribe". Trouble? Contact [email protected]
