Re: Add isboot iSCSI boot driver to FreeBSD

Hi,

First of all, thank you for using isboot.

> The basic problem with isboot is that it only works with the old iSCSI
> initiator, which is now marked obsolete.  AFAIK there is no ready solution

It's started in FreeBSD 7.1.
I plan to use initiator functions at 2010.
However, I didn't know how to access it.

For more, first post on blog(Japanese):
http://shell.peach.ne.jp/aoyama/archives/1179

Now isboot has own limited builtin initiator to handle login sequence.
isboot will continue to use it instead of switching to iSCSI initiator.

So I think current problem is header file (structure in it) only.
You don't need load iscsi_initiator.ko even if you use FreeBSD 10.

I have removed these header files in 0.2.11 release.
It is not so difficult compared to that to rewrite the code.
Of course, I should replace the code later...

http://www.peach.ne.jp/archives/isboot/isboot-0.2.11.tar.gz
http://www.peach.ne.jp/archives/isboot/demo/FreeBSD-10.2-RELEASE-amd64-memstick-isboot-0.2.11.img

You can boot/install with the demo and empty disk. (see attached N4F/istgt config image)

build test(not jail host):
  8.4, 9.3, 10.2, 11-current.
boot/install test:
  NAS4Free 10.2.0.2(istgt) + FreeBSD 10.2 memstick + VBox + iPXE(iso).

-- 
Daisuke Aoyama


--------------------------------------------------
From: "Edward TomaszNapierała" <trasz_at_freebsd.org>
Sent: Thursday, September 24, 2015 6:25 AM
To: "John Nielsen" <lists_at_jnielsen.net>
Cc: "freebsd-current Current" <freebsd-current_at_freebsd.org>; <aoyama_at_peach.ne.jp>; "Yonas Yanfa" 
<yonas_at_fizk.net>
Subject: Re: Add isboot iSCSI boot driver to FreeBSD

> On 0923T0916, John Nielsen wrote:
>> On Sep 23, 2015, at 2:12 AM, Yonas Yanfa <yonas_at_fizk.net> wrote:
>>
>> > isboot is a iSCSI boot driver written by Daisuke Aoyama that allows you to boot your root 
>> > partition using iSCSI.
>> [,,,]
>> > This was first announced way back in June, 2010:
>> >
>> > https://lists.freebsd.org/pipermail/freebsd-scsi/2010-June/004425.html
>> >
>> > I've tested the current version (v0.2.10) and it works with FreeBSD 10.2 booting a ZFS on 
>> > root installation:
>> >
>> > http://www.peach.ne.jp/archives/isboot/isboot-0.2.10.tar.gz
>> >
>> > I've used iSCSI boot with Ubuntu Server for a while and it's been very useful. I'm looking 
>> > forward to FreeBSD having the same capability built-in.
>>
>> +1. I have used this module in the past and it is extremely useful. Thanks for the pointer, I 
>> wasn’t aware it had been updated for FreeBSD 10.x so recently. I’ve also wondered why this 
>> is not part of FreeBSD by default.
>>
>> Aoyama-san, do you have any objection to this code being included in FreeBSD? If not, can you 
>> formally assign it a BSD or other friendly license? Thank you again for the work!
>>
>> Trasz (or anyone), is there other work to support iSCSI booting and/or IBFT on FreeBSD? 
>> Anything else isboot might conflict with? Any problems with integrating the code or with the 
>> code itself?
>
> The basic problem with isboot is that it only works with the old iSCSI
> initiator, which is now marked obsolete.  AFAIK there is no ready solution
> that works with the new one - however, it should be possible to use upcoming
> reroot support to achieve this: boot with a temporary rootfs, mounted from
> a ramdisk preloaded by loader(8), setup an iSCSI session, and then replace
> the temporary rootfs with the real one, mounted over iSCSI.