Mount dump0 as ISO9660 filesystem?

[Jerry McAllister]

On Fri, Dec 04, 2009 at 04:50:43PM -0800, Nerius Landys wrote:

> > Your dump is just a regular file sitting on a hard drive with a file
> > system that's already mounted.  If you created an on-disk ISO image of
> > that file, you'd have to mount the file system of that ISO image to read
> > the file.  If you burned the ISO image to a CD, you'd mount the CD's
> > file system to read it.  Either way, the file remains just a file, and
> > is read using restore(8).
> >
> > I'll offer a guess that you're confusing things with tar(1) (which is
> > often used for backups) and the recent changes.  From the manpage:
> >
> >    This implementation can extract from tar, pax, cpio, zip, jar, ar,
> >    and ISO 9660 cdrom images and can create tar, pax, cpio, ar, and
> >    shar archives.
> >
> > The above means you can now do nifty things like 'tar xvf mybackup.iso',
> > and if you've configured a pre-processor for less(1), even niftier
> > things like:
> >
> >    less backup.tar.gz
> >    less backup.zip
> >    less backup.iso
> >
> > It's also possible you might be thinking of file system snapshots (which
> > can be mounted).  Check the Handbook for details.
> >
> 
> All I really want to do is take my dump file and see the "files"
> inside it, and do things with those files such as copy or md5sum (not
> edit).  And I don't even know which tool do use to accomplish that.
> For example, if I took a dump 0 of /usr (which I did), I would like to
> see the "file" /usr/home/nlandys/.zshrc inside the dump, and then
> actually see (read) this file and/or copy it over scp or to another
> filesystem.


Well, restore(8) is the utility intended for looking at and extracting 
files from dump files.  I don't know if you can do all those things
directly from a dump file using restore.  You may have to restore a
file to disk first and then act on that file for some of them.
But some might work.  I usually make a directory I call 'unroll'
somewhere with lots of extra space, put stuff there and work on things
from there and clean up afterwards.  But, you are welcome to experiment.

////jerry



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