> Date: Sun, 22 Dec 2013 12:55:15 -0600
> From: Bruce Dubbs <[email protected]>
> To: BLFS Support List <[email protected]>
> Subject: Re: [blfs-support] Complete Backup of {,B}LFS
>
.
.
> > 1. Set up and mount a new partition for this system--done
> > 2. As root in / run: $ find . -xdev -depth -print0 | cpio --null -pd
> > <mount point>
>
> Why not just 'cp -a / <mount point>'
>
If using cp, then maybe use also '-x' option: else can get problems when cp
encounters mount-point in its source-tree traversal, per foll example, in
which src-file ./a/fa doesn't get copied to tgt-path ./a/b/mnt/a/fa :
========
$ mkdir -p ./a/b/{mnt,c/d/e}
$ touch ./a/{fa,b/{fb,c/{fc,d/{fd,e/fe}}}}
$ tree -aF .
.
`-- a/
|-- b/
| |-- c/
| | |-- d/
| | | |-- e/
| | | | `-- fe
| | | `-- fd
| | `-- fc
| |-- fb
| `-- mnt/
`-- fa
6 directories, 5 files
$ cp -a a a/b/mnt/
cp: cannot copy a directory, `a', into itself, `a/b/mnt/a'
$ tree -aF .
.
`-- a/
|-- b/
| |-- c/
| | |-- d/
| | | |-- e/
| | | | `-- fe
| | | `-- fd
| | `-- fc
| |-- fb
| `-- mnt/
| `-- a/
| `-- b/
| |-- c/
| | |-- d/
| | | |-- e/
| | | | `-- fe
| | | `-- fd
| | `-- fc
| |-- fb
| `-- mnt/
`-- fa
12 directories, 9 files
$
========
For full-os trees, can be messy and error-prone to patch-up what's missing
and/or to verify that all is now ok.
> You will want to clean the virtual file systems in any case. You could
> also do: 'tar -c --one-file-system - | tar -x -C <mount point>' which
> will avoid the virtual file system problem (but the virtual file systems
> mount points need to be created).
>
> If you boot to a 3rd system and do not have the virtual file systems
> mounted, you can just do:
>
> $ sudo cp -a /mnt/lfs mnt/lfs2
>
.
.
>
rgds,
akhiezer
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