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Date: Mon, 11 Jul 2005 13:38:49 +0200
From: alexandre.delay@free.fr
To: Igor Robul <igorr@speechpro.com>
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Cc: freebsd-questions@freebsd.org
Subject: Re: Per disk quota
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> Alexandre D. wrote:
>
> >Hi guys,
> >
> >I'm searching for a way to set a limit per directory.
> >for example:
> >
> >directory		limit
> >/web/dir1		1Go
> >/web/dir2		10Mo
> >/web/dir3		100Mo
> >/web/dir4		175Mo
> >
> >This system would be used by only one program (image grabber)
> >
> >Do you have any idea?
> >
> >
> use file backed md(4) devices. And then mount these devices.
> Example (newfs is nessesary only first time):
>
> # dd if=/dev/zero of=dir2md bs=1m count=10
> 10+0 records in
> 10+0 records out
>
> # mdconfig -a -t vnode -f dir2md
> md0
>
> #newfs /dev/md0
> /dev/md0: 10.0MB (20480 sectors) block size 16384, fragment size 2048
>         using 4 cylinder groups of 2.52MB, 161 blks, 384 inodes.
> super-block backups (for fsck -b #) at:
>  160, 5312, 10464, 15616
>
> #mount /dev/md0 /web/dir2
>


Nice idea! I didn't think about it!

I have a wonder about that. Does this procedure include a delay in file access
time?