On Thu, 6 Dec 2007, dan wrote:
> i have been experimenting with this and think i have a workable 
> solution. only problem is that nexenta is a bit of a pain to get 
> backuppc running on. just seems to have a lot of little issues with 
> backuppc 3.1 (running nexenta a7)

nexenta is Debian/Ubuntu-based, isn't it? Have you tried rebuilding the 
deb?

> i can tell you that ZFS and snapshots are very nice!  basically, you can 
> send a snapshot as a stream to any output like this:

uh, nice!

> which is basically doing something kinda like imaging the filesystem and 
> throwing it accross an ssh tunnel and rebuilding it on the other side. 
> on my local network i can get over 30MB/s speed doing this between 2 
> machines on gigabit and it doesnt count the files so it starts 
> instantly.  you can also push this accross in an incremental fassion so 
> you could:

that is friggin sweet.

> from my understanding of the ZFS snapshot process, it works on the block 
> level so changing part of a 1GB file will only cause the snapshot to 
> write the amount of the change and also allow incremental transfers of 
> very large files very quickly. something like rsync does for files but 
> on the filesystem level rather than the file level. when i test this out 
> i get a snapshot in less than a second and when i change the file, the 
> one in the snapshot is there without writing a GB.

that is really cool.

> basically the backup command would first take a snapshot and name it a 
> backup number, then do the standard file transfer right onto the 
> directory.

and that would be cool too.  ;)

------------------------------------------------------------------------
| nate carlson | [EMAIL PROTECTED] | http://www.natecarlson.com |
|       depriving some poor village of its idiot since 1981            |
------------------------------------------------------------------------

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