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Re: re-thinking partitions



On Fri, 14 Nov 1997 10:24:10 -0200 Otavio Exel (oexel@economatica.com.
br) wrote:

> - are symlinks really fast?

Quite, except on NFS. You really should worry about it unless you're 
a performance freak.

> - I read somewhere that "500mb for /var and /tmp" is fine;
>   what exactly does that mean? two partitions summing up 500mb?
>   one 500mb partition and symlinks from /var and /tmp?

This is a lot of space wasted unless you have large spool directories 
(news/mail). For a reasonable single-user station, 64MB should be 
largely enough on /var. /tmp is left to your choice (16 is a good 
number).

> - why is /usr/tmp symlynked to ../var/tmp instead of /var/tmp?
>   same applies to /usr/spool; is it important?

Yes, all symlinks should be relative, in case you mount filesystems 
across NFS or with a boot disk: let's say you have
	/dev/hda1 /
	/dev/hda2 /usr
	/dev/hda3 /var
Then mounting them from the rescue disk, you would have:
	/dev/hda1 /mnt
	/dev/hda2 /mnt/usr
	/dev/hda3 /mnt/var
And /mnt/usr/tmp would correctly point to /mnt/var/tmp instead of 
/var/tmp.

> - what will happen with hard lynks if I "cp -d" from one part to
>   another?

They'll get duplicated. -d applies only to symlinks.
If you want to preserve files exactly, you want to use cp -a (or tar, cpio, etc...).

Phil.



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