system backup

[Lennart Sorensen]

On Tue, Aug 17, 2004 at 08:27:52PM -0400, Peter L. Peres wrote:
> cpio is clever about device files and such. You can copy the devices as 
> is, or links to same wherever they are in the fs without trouble. rpm uses 
> cpio internally among others. Other than that, nothing special. But I 
> still prefer to use find and make a file-list (equivalent to ls -lR but 
> better) and then have a peek at it before using it as file list for the 
> backup or system transfer.

Well I have tob for managing that part of backups.  I decided afio was a
nice archive format for backups, since it compresses each file inside
the archive, rather than applying compression to the archive after
making it.  This way seeking to a given file is fast, since it doesn't
have to decompress the file to seek, only the wanted file data.  On tape
this may not matter if your tape drive can't seek quickly to a specific
location, but on DVD (which we use) it makes for very fast restores.
Preferably restores aren't needed of course and to help avoid the need I
also have rsnapshot setup.

Lennart Sorensen
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