FreeBSD growfs TODO

The following tasks have been proposed. The order these are presented here does not reflect any priorization. It also doesn't mean that all of them are already considered to be implemented. Some of them are already seriously considered, and even certain code exists.

• Check and ensure correct handling of byte order. This utility should in the end also run fine on alpha architecture.
• Change the order of writes to the filesystem to guarantee more consistency in case of an unexpected write error or even a power failure. Currently it is not even verified, if fsck(8) can fix the filesystem in those cases, and if we might loose data in that event.
• MFC. As the whole development took place on FreeBSD-3 anyway that should not be that tricky, but we definitely want to have some broader testing before.
• Add handling of snapshots in current.
• Extend the functionality to allow even for growing of mounted file systems.
• Change structure to use more code from src/sys/ufs/ffs/.
• Add relocation of whole areas of data to prepare for shrinking.
• Add functionallity to grow not only at the end of the filesystem.
• Add functionallity to change the layout of the filesystem like cylinder per group.