Messages in this thread |  | | From | lilo <> | Date | Thu, 30 May 1996 09:40:54 -0500 (CDT) | Subject | Re: strange df output? |
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On Thu, 30 May 1996, Andrew E. Mileski wrote:
> > 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.
The `tune2fs' utility can also be used to change the reserved space on an existing filesystem. The filesystem may not be mounted read-write; so, in the case of your root partition, you'd want to go into single-user mode with something like:
telinit 1
and then remount it with something like:
mount -n -o remount,ro -t ext2 /dev/hda1 /
before changing the reservation value via:
tune2fs -r <reserved-block-count> /dev/hda1
or:
tune2fs -m <reserved-block-percentage> /dev/hda1
I am uncertain whether it's possible to increase the reserved space on an existing volume, but suspect it is.
Note: it's also possible to use -g or -u to change the group ID or user ID who can benefit from reserved space. This can be very handy for special-purpose, non-root volumes.... I assume you can set these values when creating the filesystem, but don't quote me.... :)
:) lilo
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