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Hi,

First off, thank you very much Steven.

On 14/10/2014 10:02 PM, Steven Chamberlain wrote:
> On 13/10/14 19:04, Andrew McGlashan wrote:
>> So, is there currently ANY concern that kFreeBSD won't continue
>> for Jessie and/or beyond Jessie?  Are there enough people
>> involved now to remove the risk for new users coming on board to
>> use kFreeBSD, [...]
> 
> I'm hoping it doesn't come to that.  As explained in 
> https://lists.debian.org/debian-bsd/2014/09/msg00282.html by the
> time of the release team announcement, we'd already fixed d-i and 
> the RC bugs mentioned during the meeting.  Only one RC bug,
> #740509 really concerns me now (affecting kfreebsd-i386 only).

Yes, I read that and I assumed as much, but as I've let others know
about the potential option to switch ti kFreeBSD ... well, I thought I
better get some clarification.

Hopefully we'll be okay.

> If kfreebsd-* arches were dropped, we could still put out an
> unofficial release with what we already have, and support the
> kernel for the lifetime of jessie.

I'm afraid that if it gets dropped, then I may not get started with
kFreeBSD ... in that case, I might go with FreeBSD direct, but I'll
have quite a bit more learning to do.

> But what we'd probably lose are package mirrors for stable, and
> the infrastructure to build security updates or
> stable-proposed-updates for the whole package archive in a timely
> manner;  these are critical for production use.

That sure wouldn't help.

> If dropped from testing migration, packages might stop fixing bugs
> that affect us, and over time large sets of packages could become
> out-of-date and unable to build any more;  that would leave
> testing/sid in a poor state.
> 
>> those needing an exit strategy from systemd on the main Debian
>> release?
> 
> (include myself in that ;)

;-)

>> Also, if people move systems to kFreeBSD and kFreeBSD stops
>> being properly maintained and supported, is there a good
>> migration path to FreeBSD or would it be a case of learning the
>> whole FreeBSD system /ways/ over the Debian /ways/ ?   How about
>> ZFS, would the data on ZFS volumes be easily migrated, without
>> rebuilding ZFS setups from scratch if the need arose?
> 
> We try to stay compatible with upstream's kernels, and allow for 
> GNU/kFreeBSD chroots on FreeBSD and vice-versa.  ZFS volumes should
> be portable between these systems.

That's great.

> (These are probably good questions to add to the Wiki FAQ...)
> 
>> What is the status of virtualization?  I would like to replace
>> xen which I am currently using with squeeze-lts -- is xen going
>> to work with kFreeBSD?  Is bhyve going to be a realistic option
>> to use on kFreeBSD?
> 
> We haven't packaged any bhyve tools yet.  In FreeBSD 10.x it still
> only supports Intel CPUs and I don't have any of those to try it
> on.

Do you mean amd64 or Intel specifically?

> GNU/kFreeBSD works fine as a Xen (HVM) domU since wheezy, and even 
> better in jessie because faster PV-HVM drivers are compiled in by 
> default.  It can't be the Xen dom0 however;  the host may have to
> be Debian GNU/Linux or NetBSD.

That's good to know.  I might be able to play around with kFreeBSD
that way, although the problem for me is that I might not have enough
RAM available to do that on currently available equipment at my disposal.

> Debian GNU/Linux wheezy is a really good Xen dom0 (much easier
> than configuring it on NetBSD).  This has the advantage that you
> could create a LUKS LVM to store your virtual machines in, as an
> alternative to setting that up inside the VM.  You could have a
> minimal, unencrypted dom0 that boots and starts up networking
> without password, then SSH in to unlock and start wholly-encrypted
> VMs?  Just remember to also encrypt wherever VMs' memory gets
> suspended to on disk during a host reboot (I'm guessing somewhere
> like /var/lib/xen/...?), and the host's swapspace (if any).

Debian GNU/Linux wheezy might be the answer for Xen Dom0 then, at
least for a while.

>> I am also interested in using FDE (full disk encryption),
>> including / file system and use of dropbear ssh for mount time
>> entry of LUKS pass phrases as I do with some current wheezy
>> servers.  Is there well documented ways to get systems up with
>> these requirements?
> 
> As above;  otherwise I think "full-disk encryption" is an odd
> expression since there must be at the very least an unencrypted
> bootloader, and typically the kernal and ramdisk too.

Not really, I've got a couple of Thecus N4800Eco units, they have 4x
4TB disks installed and also a SATA port with plenty of room for /boot
partition on a 1GB sized SATA disk that looks a bit like a USB stick,
but it isn't USB.  I use dropbear to get an ssh environment where I
can enter pass phrases for the encrypted root file system disk and I
also do the same for other crypt volumes (all LUKS).  That works
really well.  I can handle just /boot being without encryption.

> If you wanted to configure encryption within GNU/kFreeBSD
> instead... we don't have an initramfs and thus don't have a
> dropbear-like mechanism to unlock GELI-encrypted disks.  Creative
> solutions to this are possible; a minimal root filesystem could
> start up networking+ssh in runlevel "S" then stop and wait;  you
> could log in to unlock GELI disks, mount an entire ZFS pool over
> the top of /, and resume boot.
> 
> Seems much easier though, if this is a VM, to let the host handle
> disk encryption instead.  You implicitly trust it anyway with your
> data and encryption keys in RAM.

Yes, for sure.

Thanks very much once again.  Your post is very helpful and I greatly
appreciate all the work you are doing with kFreeBSD.

Cheers
A.
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