Messages in this thread |  | | Subject | Re: strange df output? | Date | Thu, 30 May 1996 11:09:55 -0400 (EDT) | From | "Andrew E. Mileski" <> |
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> > > Sorry for the confusion. I was not aware of the reserved space used in > > > an ext2 file system, and had simply never noticed that in a df command > > > before. > > > > Note that you can set the reserved space to ZERO when you first > > make the fs. Check the man page for details. > > > > I do this on my non-root/non-temporary fs to squeeze out a few extra blocks. > > What exactly do you end up slowing down when you do that? Does it slow > down reads, or only writes, or what?
AFAIK it doesn't slow anything down. The reserved space is simply reserved for the root user.
Example: some idiot - or a broken daemon - fills /var/tmp and no user can do anything, but the root user can use the reserved space to correct the problem. Without the reserved space, the system could lock-up and root wouldn't be able to anything about it.
Extra space is not required on a fs governed by quotas, but it is a _really_ good idea on a uncontrolled (take as much space as you want) fs which, is _vital_ to the operation of the system (like the temporary areas).
-- Andrew E. Mileski
mailto:aem@ott.hookup.net http://www.redhat.com/~aem/ Linux Plug-and-Play Project http://www.redhat.com/pnp/
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