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Date:      Sun, 29 Jan 2017 22:07:57 -0800
From:      David Christensen <dpchrist@holgerdanske.com>
To:        freebsd-questions@freebsd.org
Subject:   Re: FreeBSD 11.0-RELEASE-p7 i386 system drive imaging and migration
Message-ID:  <3f6c8bfb-70a4-74c2-3879-b328ecd3bb38@holgerdanske.com>
In-Reply-To: <alpine.BSF.2.20.1701292206450.71961@wonkity.com>
References:  <df0c81d7-fd2b-852f-4007-5fb4b24100e0@holgerdanske.com> <alpine.BSF.2.20.1701290622500.13432@wonkity.com> <516b147d-6faa-b9c0-1d8f-2313a0755211@holgerdanske.com> <alpine.BSF.2.20.1701292206450.71961@wonkity.com>

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On 01/29/17 21:18, Warren Block wrote:
> On Sun, 29 Jan 2017, David Christensen wrote:
>
>> On 01/29/17 05:27, Warren Block wrote:
>>> On Sat, 28 Jan 2017, David Christensen wrote:
>>>
>>>> What is the proper way to clone a FreeBSD system image from one drive
>>>> to another?
>>>
>>> On encrypted ZFS?  I'm not sure there is a brute-force way that is
>>> trustworthy.  Using higher-level commands to recreate the partitions,
>>> GELI encryption, and then zfs send | recv are certain safer and won't
>>> duplicate supposedly unique IDs.
>>
>> STFW
>>
>> https://www.freebsd.org/doc/en_US.ISO8859-1/books/handbook/backup-basics.html
>>
>>
>> toor@freebsd:/root # gpart show
>> =>      63  31277169  ada0  MBR  (15G)
>>        63         1        - free -  (512B)
>>        64  31277160     1  freebsd  [active]  (15G)
>>  31277224         8        - free -  (4.0K)
>>
>> =>       0  31277160  ada0s1  BSD  (15G)
>>         0   4194304       1  freebsd-zfs  (2.0G)
>>   4194304   4194304       2  freebsd-swap  (2.0G)
>>   8388608  22888544       4  freebsd-zfs  (11G)
>>  31277152         8          - free -  (4.0K)
>>
>>
>> It appears that my FreeBSD image lives within what Microsoft and Linux
>> would call a single MBR primary partition (FreeBSD "slice"?), and that
>> FreeBSD further subdivides that into boot, swap, and root sections
>> (FreeBSD "partitions"?).
>
> Yes.  I think the 11.0 installer made the mistaken assumption that
> machines that boot from BIOS must (or should) use MBR/disklabel.

I manually selected MBR partitioning scheme in the installer, as  I have 
machines going back to Pentium 4's and I want something that will work 
on all of them.


>> STFW RTFM there is information scattered in many places.  Is there a
>> concise document that explains what is relevant for creating, cloning,
>> migrating, etc., FreeBSD 11 r7 system drives -- what the on-disk data
>> structures are, how to back up them and their contents, how to
>> recreate the structures on a blank drive, how to restore  contents,
>> how to deal with size, identifier, serial number, crypto key, etc.,
>> changes, etc.?
>
> Not that I know of.  What you are talking about is a combination of
> numerous different systems. I talk about partitioning here:
>
> http://www.wonkity.com/~wblock/docs/html/disksetup.html
>
> But if you are using encryption, that means GELI (geli(8)).

Okay.


>>>> What is the proper way to move a HDD or SSD with a FreeBSD system
>>>> image from one computer to another computer?
>>>
>>> Provided the binaries have not been optimized for one CPU, just move the
>>> drive.  Disk drive names can change, which is not a problem when labels
>>> are used.
>>
>> It looks like I got lucky on device names.  Where are slice/
>> partition/ filesystem labels documented, notably the strategies and
>> procedures for using them?
>
> See glabel(8).

Okay.


>>> Ethernet interface names can change.  If there is only one
>>> interface, use ifconfig_DEFAULT in /etc/rc.conf.
>>
>> Regarding the network interface, my /etc/rc.conf contains shell
>> variable assignments.  What am I to assign to 'ifconfig_DEFAULT'?
>
> Usually, SYNCDHCP:
>
> ifconfig_DEFAULT="SYNCDHP"
>
> It functions the same as ifconfig_em0 or _re0 or whatever, but for all
> interfaces with no other settings.

Okay -- this worked:

ifconfig_DEFAULT="DHCP"


>> RTFM 'ifconfig_DEFAULT' I draw blank:
>>
>> toor@freebsd:/root # grep ifconfig_DEFAULT /etc/rc.conf
>> /etc/defaults/rc.conf
>> toor@freebsd:/root # man rc.conf | grep ifconfig_DEFAULT
>
> setenv PAGER less
> man rc.conf
> Type
>   /ifconfig_DEFAULT
> and press Enter.

Yes, I tried that.  Interactive use:

Pattern not found (press RETURN)


grep'ing the man page:

dpchrist@freebsd:/usr/home/dpchrist $ man rc.conf | grep ifconfig_DEFAULT
<nothing>


>> The Xfce application issues appeared both when:
>>
>> 1.  The FreeBSD system drive image was copied to another drive and
>> then booted in the source machine.
>>
>> 2.  The FreeBSD system drive was booted in another machine.
>>
>>
>> What is causing the Xfce issues?
>
> No idea.  I have moved hard drives from one machine to another, and in
> fact wrote an installer that sets up FreeBSD to be used on a generic
> machine with Xfce.

Does it work on FreeBSD 11.0 i386?


David





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