> From: zfs-discuss-boun...@opensolaris.org [mailto:zfs-discuss-
> boun...@opensolaris.org] On Behalf Of Freddie Cash
> 
> From the sounds of it, the .snapshot directory is just a pointer to the
> corresponding directory in the actual snapshot tree.  The snapshots are
> not actually saved per-directory.  They just give you a handy shortcut
> into that same level in the snapshot directory tree.

Precisely correct.


> Something like this would be very useful in ZFS, especially if you have
> deep directory trees in a single ZFS filesystem, and you want to
> compare files/directories in multiple snapshots.  For example, our
> backups server has

Especially what you said.  But especially *especially* the following:  If you 
have a zfs filesystem /exports, and a nested filesystem /exports/home, and 
another one /exports/home/jbond ... 

If you sometimes do your work in 
/exports/home/jbond/important/files/and/documents ...
And you sometimes do your work in /exports/mi6/007/secret/directory ...
Then you sometimes need to access snapshots under /exports/.zfs and sometimes 
under /exports/home/jbond/.zfs

It's really nice if you don't have to figure out how far up the tree to go, in 
order to find the correct .zfs directory for what you want to find right now.

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