Backing up sparse files ... VM's and TrueCrypt ... etc

[blu-Z8efaSeK1ezqlBn2x/YWAg at public.gmane.org (Edward Ned Harvey)]

> This is just one of the reasons I wish they could work out the legal
> issues between zfs and linux.  The latest version of zfs has block
> level dedupe, both in the fs and the backup, and both can be configured
> independently.

Nevermind dedupe, even in "vanilla" configuration, zfs does a great job of
just sending the changed blocks instantly without need to search or diff for
them.

Recently, a few months ago, I saw two articles released within a day of each
other.  Apple gave up on ZFS in OSX because of irreconcilable license
issues.  And KQ Infotech is working on a port of zfs to Linux, with reason
to believe they can, or have already overcome the license conflict issues.

http://go2.wordpress.com/?id=725X1342&site=kqinfotech.wordpress.com&url=http
%3A%2F%2Ftwitter.com%2FKQInfotech
and
http://kqinfotech.wordpress.com/