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Date:      Thu, 28 Feb 2002 15:46:18 -0800
From:      Terry Lambert <tlambert2@mindspring.com>
To:        Patrick Thomas <root@utility.clubscholarship.com>
Cc:        Nik Clayton <nik@FreeBSD.ORG>, Kirk Strauser <kirk@strauser.com>, freebsd-hackers@FreeBSD.ORG, freebsd-emulation@FreeBSD.ORG
Subject:   Re: using vnconfig devices instead of partitions for jails ?
Message-ID:  <3C7EC14A.9D3DC098@mindspring.com>
References:  <20020228144213.P29049-100000@utility.clubscholarship.com>

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Patrick Thomas wrote:
> How many mount points (jails, in this case) can I run ?  I see that there
> are 8 existing vn0X device files in /dev - can I just create more of them
> using MAKEDEV (or mknod) and keep going ?
> 
> What is the maximum ?  256 ?

Depends.  Expect 256 to be available in all versions.

> also, do I need to alter the kernel to support more vn0X device files, or
> does a stock kernel support all the way up to the maximum (whatever that
> is - see previous question :)

They are allocated as they are configed, so the limitation
is the number of minor devices.

Note: I personally run 13 jails on the laptop from which I
am currently typing this.  I do *not* use seperate partitions
or vnconfig'ed devices; on the other hand, I don't have quota
enforecement issues.

-- Terry

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