cvs commit: src/sys/sys mdioctl.h src/sys/dev/md md.csrc/sbin/mdconfig Makefile mdconfig.8 mdconfig.c

[Scott Long]

Ceri Davies wrote:
> On Fri, Sep 17, 2004 at 08:40:54AM -0600, Scott Long wrote:
> 
>>Ceri Davies wrote:
>>
>>>On Fri, Sep 17, 2004 at 12:45:36AM +0200, Pawel Jakub Dawidek wrote:
>>>
>>>
>>>>On Fri, Sep 17, 2004 at 01:09:59AM +0300, Giorgos Keramidas wrote:
>>>>+> > +> 	Filesystem                        Size    Used   Avail 
>>>>Capacity  Mounted on
>>>>+> > +> 	[...]
>>>>+> > +> 	/dev/md0                           15T    249M     14T     
>>>>0%    /mnt
>>>>+> > +> 	/dev/md1                           11T    128K     10T     
>>>>0%    /mnt2
>>>>+> >
>>>>+> > ragepxe:root:~# mdconfig -l -u 0
>>>>+> > md0     swap       15T
>>>>+> > ragepxe:root:~# mdconfig -l -u 1
>>>>+> > md1     vnode      11T
>>>>+> 
>>>>+> I think most of us were already jealous enough by seeing the first 
>>>>post :-P
>>>>+> (Thanks for the extra md coolness these commits made possible :-))
>>>>
>>>>Jealous about what?:) You know, that you can setup 15TB of md(4) 
>>>>swap-backed
>>>>device on 512MB swap partition, right?
>>>
>>>What happens if you try to fill them?
>>
>>The advantage of what Pawel has done is that you can simulate very large
>>disks for the purpose of debugging other utlities like sysinstall,
>>bsdlabel, fdisk, newfs, growfs, etc.  Some of these programs have
>>limitations that cannot be changed, but they can be verified and fixed
>>to have sane behaviour.
> 
> 
> Don't misunderstand me, I'm appreciative of that.  My question stemmed
> from curiosity alone; I had to either ask or try it out this weekend and
> I figured that somebody was sure to know already.
> 
> Ceri

No offense taken.  See http://www.freebsd.org/projects/bigdisk for more
details.

Scott