Date: Sat, 5 Dec 2009 15:08:54 -0500 From: Jerry McAllister <jerrymc@msu.edu> To: Nerius Landys <nlandys@gmail.com> Cc: George Davidovich <freebsd@optimis.net>, freebsd-questions@freebsd.org Subject: Re: Mount dump0 as ISO9660 filesystem? Message-ID: <20091205200854.GA72947@gizmo.acns.msu.edu> In-Reply-To: <560f92640912041650p36c620edgd4ba8079b0e4e0da@mail.gmail.com> References: <560f92640912031527mfe85d70j40e4bc75aa33d85@mail.gmail.com> <20091204231721.GB18745@marvin.optimis.net> <560f92640912041650p36c620edgd4ba8079b0e4e0da@mail.gmail.com>
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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 > _______________________________________________ > freebsd-questions@freebsd.org mailing list > http://lists.freebsd.org/mailman/listinfo/freebsd-questions > To unsubscribe, send any mail to "freebsd-questions-unsubscribe@freebsd.org"
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