[conspire] PING (Partimage Is Not Ghost) -- Backup and Restore Disk Partitions

[Rick Moen]

Quoting Eric De MUND (ead-conspire at ixian.com):

> Learned something new today; I've used this tar idiom before, but I've
> never seen this "S" flag before. Thanks!

Yeah, "sparse" file storage is an intriguing fine point in *ix
filesystems.  Here are some data on that:

http://gentoo-wiki.com/TIP_Fast_Copy
http://aplawrence.com/Words/2003_10_04.html
http://bulma.net/impresion.phtml?nIdNoticia=1154
http://www.win.tue.nl/~aeb/linux/lk/lk-6.html

In short, in normal usage scenarios, you'll probably never encounter
a sparse file, but adding the "S" flag means GNU tar will handle them
properly, if they _are_ ever encountered.