Fwd: strange strange problem! (please help!!)
Globe Trotter
itsme_410 at yahoo.com
Sat Jan 22 22:03:25 UTC 2005
But wait! Should this not show up under df?
After all, df still shows something like 22GB used in the remote host....
Thanks!
>
> For completeness, the other option is sparse files.
>
> When Unix (or a compatible system like Fedora) is asked to create a file
> which has huge amounts of (binary) zero in it, it can be set to just
> record the fact that most of the file is zero, and store those blocks
> which aren't all zero. This is a sparse file.
>
> This is under application control: it has to write the file the right
> way.
>
> For example,
>
> [james at howells scratch]$ du -k sparse
> 488 sparse
> [james at howells scratch]$ ls -lk sparse
> -rw-rw-r-- 1 james james 500000 Jan 22 20:08 sparse
>
> a file that takes 488K on disk, but is actually 500MB (ish) large.
>
> When you copy a sparse file with some utilities, they will write out a
> non-sparse file that really does have 500 MB (or whatever) of zeros, and
> takes up 500MB of disk space.
>
> The Original Poster may want to investigate this web page:
> http://rimuhosting.com/howto/rsync.jsp
>
> James.
>
> --
> James Wilkinson | "!" sez I. And "?". After a few speechless seconds
> Exeter Devon UK | I come out with "%^&*". Unless I come up with
> E-mail address: james | something plausible soon I'm going to run out of
> @westexe.demon.co.uk | special characters. -- Ben at lspace.org
>
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