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Date:      Sun, 7 Aug 2005 05:52:12 +0300
From:      Giorgos Keramidas <keramida@ceid.upatras.gr>
To:        Michael Dexter <dexter@ambidexter.com>
Cc:        freebsd-questions@FreeBSD.org
Subject:   Re: Can file-backed memory disks act like slices?
Message-ID:  <20050807025212.GA8039@gothmog.gr>
In-Reply-To: <a06230963bf1af2050150@[192.168.1.102]>
References:  <a06230963bf1af2050150@[192.168.1.102]>

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On 2005-08-07 02:13, Michael Dexter <dexter@ambidexter.com> wrote:
>
> Hello all,
> I trust this is a Seldom Asked Question...

A very good one though.

> I am using file-backed memory disks (as in mdconfig -f) to prototype
> filesystems.
>
> root.img gets mounted first and usr.img, var.img and tmp.img get
> mounted below it and as such they are behaving as partitions.
>
> Is there any way to get a single memory disk to behave like a slice
> and itself be partitioned? That would give essentially:
>
> /dev/md0a
> or even
> /dev/md0s1a

Yes.  This should work fine.  I usually create just one slice in my
memory disks and then label the slice as usual.

> This would allow the four partition images to be combined into a
> single partitioned image.
>
> Yes, I have a legitimate use for this. :)

HEH :)




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