On 03/20/2013 09:51 PM, akhiezer wrote: >> Date: Wed, 20 Mar 2013 15:33:48 -0500 >> From: Bruce Dubbs <bruce.du...@gmail.com> >> To: akhiezer <lf...@cruziero.com>, >> BLFS Support List <blfs-support@linuxfromscratch.org> >> Subject: Re: [blfs-support] moving lfs >> >> akhiezer wrote: >> >>> - sockets, devs, doors, the usual stuff: I interpreted the original >>> problem >>> sub-item spec as getting a byte-for-byte copy of the lfs partition(s) as-is, >>> and then restoring them. If instead it's loosened to not bothering about >>> some >>> items/aspects and allowing/assuming their re-creation automatically, then >>> yeah >>> fine: but I wouldn't do backups of full-system snapshots that way. >> >> I'm not sure what devs or doors are. There are seven file types in >> Unix/Linux: regular, directories, sockets, symbolic links, pipes >> (fifos), block special, and character special. >> >> All special files should be in the /dev directory. I'm not sure I'd try >> to make a backup of a live system. There are too many chances of >> something getting out of sync. Trying to back up /proc or /sys or any >> other virtual file system seems very problematic to me. >> >> -- Bruce >> >> Oh, is see a door is specific to solaris. I haven't used that in 15 years. >> > > > 'devs' - 'device files' . Pretty much obvious. > > Nobody's talking about backups of live filesystems, at least outwith > single-user - other than your leftfield introd of it. > > The 'doors' ref is pertinent in the context of explaining to you what items > tar > would choke on historically. > > The likes of /proc and /sys can backup no-probs at all. > > The central point is that if you do a full backup - and that's just what it > means - then you have the option of whether or not you e.g. restore this or > that > part of it: whereas if you don't backup certain items then you don't have that > option. One may cut corners with one's own data: but this is concerning > someoone > else's. > > > rgds, > akh > > >
Yes, I remember the issue when /dev/console and /dev/null nodes were missing after backup with Debian 6 version of "tar" ... Sockets aren't added either, but it prints a warning. I think though that device nodes issue is fixed in later releases. -- http://linuxfromscratch.org/mailman/listinfo/blfs-support FAQ: http://www.linuxfromscratch.org/blfs/faq.html Unsubscribe: See the above information page
