Re: DUMP: You can't update the dumpdates file when dumping a subdirector

Subject:	Re: DUMP: You can't update the dumpdates file when dumping a subdirectory
From:	"Dustin J. Mitchell" <dustin AT zmanda DOT com>
To:	"Aaron J. Grier" <agrier AT poofygoof DOT com>
Date:	Fri, 3 Oct 2008 00:41:32 -0400

On Thu, Oct 2, 2008 at 9:03 PM, Aaron J. Grier <agrier AT poofygoof DOT com> 
wrote:
> I beg your pardon, but /sbin/dump is perfectly capable of dumping
> subdirectories on most unixes.  it just won't record (or read) the date
> of the dump in /etc/dumpdates.

I'm happy to be proven wrong (I've not used dump myself), but it was
my understanding that dump, in general, worked at the filesystem
level, against a block device.  For example, the OSX manpage (which is
just inherited from the BSD manpages) says:

     dump [-0123456789cnu] [-B records] [-b blocksize] [-d density]
          [-f file] [-h level] [-s feet] [-T date] filesystem

where the use of the term "filesystem" means, to my understanding, a
filesystem and not an arbitrary subdirectory.  Now, you may have a
filesystem mounted at /usr/local, in which case you can use dump to
back up /usr/local, but I don't think that's what you meant.

Can you point to some documentation to support your assertion?

Dustin

-- 
Storage Software Engineer
http://www.zmanda.com

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