On Mar 1, 2013, at 12:55, Volodymyr Kostyrko wrote:
> Yes, I'm working with backups the same way, I wrote a simple script that
> synchronizes two filesystems between distant servers. I also use the same
> script to synchronize bushy filesystems (with hundred thousands of files)
> where rsync produces a too big load for synchronizing.
>
> https://github.com/kworr/zfSnap/commit/08d8b499dbc2527a652cddbc601c7ee8c0c23301
There are quite a few scripts out there:
http://www.freshports.org/search.php?query=zfs
For file level copying, where you don't want to walk the entire tree, here is
the "zfs diff" command:
> zfs diff [-FHt] snapshot [snapshot|filesystem]
>
> Describes differences between a snapshot and a successor dataset. The
> successor dataset can be a later snapshot or the current filesystem.
>
> The changed files are displayed including the change type. The change
> type is displayed useing a single character. If a file or directory
> was renamed, the old and the new names are displayed.
http://www.freebsd.org/cgi/man.cgi?query=zfs
This allows one to get a quick list of files and directories, then use
tar/rsync/cp/etc. to do the actual copy (where the destination does not have to
be ZFS: e.g., NFS, ext4, Lustre, HDFS, etc.).
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