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Date:      Tue, 21 Jan 2014 16:17:48 +0700
From:      Olivier Nicole <olivier.nicole@cs.ait.ac.th>
To:        Ian Smith <smithi@nimnet.asn.au>
Cc:        Polytropon <freebsd@edvax.de>, "freebsd-questions@freebsd.org" <freebsd-questions@freebsd.org>
Subject:   Re: FreeBSD and Linux shared installation
Message-ID:  <CA+g+Bvhfvp4BBTTZd9VU0vppqhQ8Cak=eJGzA4Q23_DLmv+bZA@mail.gmail.com>
In-Reply-To: <20140121193035.K25136@sola.nimnet.asn.au>
References:  <mailman.4159.1390281281.1397.freebsd-questions@freebsd.org> <20140121172736.A25136@sola.nimnet.asn.au> <CA+g+Bvg18ef9jE5xoKhTtQgh_gAPwg6Qd+m2kpgxfa8ZG0K28Q@mail.gmail.com> <20140121193035.K25136@sola.nimnet.asn.au>

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Ian,

> The main issue there is that from FreeBSD you'd be working with a (say)
> ext2/3 partition as /home, when you really have to be sure that FreeBSD
> handles R/W flawlessly with it rather than with UFS2+SU(+J), especially
> regarding crash recovery.  Perhaps with FUSE that might be solid enough,
> but personally I tend to trust native formats and tools better, whether
> from the FreeBSD or Linux side.

I think that Linux (Ubuntu) supports UFS. As I have no machine with
oth system, I never pushed further, but I think I remember seeing an
option to format a partition using UFS in Ubuntu install.

Let me give it a trty.

Olivier

>
>  > >  > Extend. #1
>  > >  >   log. dr. #1        Kali Linux      15 GB   /dev/sda5
>  > >  >   log. dr. #2        Mageia Linux    15 GB   /dev/sda6
>  > >
>  > > From FreeBSD accessing my old OS/2 partitions I seem to recall that
>  > > /dev/ada0s5 is the ext drive itself, and within would be ada0s6 and s7,
>  > > though the above nomenclature would be right from Linux' POV.
>  >
>  > In Linux too (Ubuntu) the Extended #1 is partition #4 and being
>  > splited into logical partition #5 and #6. Basically what you write
>  > Ian, but you missed the #4: /dev/ada0s4 is the ext drive itself, and
>  > within would be ada0s5 and s6...
>
> I'm still not sure about that from FreeBSD's perspective.  Remembering
> back to '98-'99 when I salvaged years of OS/2 work, especially code, and
> those disks only had 3 primary partitions ('C:', OS/2 Boot Manager, then
> drives D: through I: or J: on the extended partition, but with no s4 I
> still had to start at s5, with s6 the first mountable partition (after
> having built the HPFS code which is still in the tree, at 9.1 anyway).
>
> However I may be misremembering (non-ECC memory :) so perhaps Polytropon
> could show us an 'ls /dev/ada0*' when it's done?
>
> cheers, Ian



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