Re: Xen/dom0/FreeBSD + NAS4Free WebGUI.

El 29/12/15 a les 7.27, Daisuke Aoyama ha escrit:
> Hello,
> 
> --------------------------------------------------
> From: "Roger Pau Monne" <royger_at_FreeBSD.org>
> Sent: Monday, December 28, 2015 10:20 PM
> To: "Daisuke Aoyama" <aoyama_at_peach.ne.jp>; <freebsd-xen_at_freebsd.org>
> Cc: <freebsd-current_at_freebsd.org>
> Subject: Re: Xen/dom0/FreeBSD + NAS4Free WebGUI.
> 
>> Hello,
>>
>> El 26/12/15 a les 15.26, Daisuke Aoyama ha escrit:
>>> Hi all,
>>>
>>> I'm creating NAS4Free dom0 edition.
>>> This is simple wrapper of Xen/dom0/FreeBSD.
>>>
>>> You can upgrade by same way of NAS4Free.
>>> You can manage HDD, ZFS, iSCSI target, NFS share by same way of
>>> NAS4Free.
>>> You can manage DomU(VM) via WebGUI.
>>>
>>> Japanese blog:
>>> http://shell.peach.ne.jp/aoyama/archives/3149
>>> http://shell.peach.ne.jp/aoyama/archives/3135
>>>
>>> NAS4Free dom0 topic in English:
>>> http://forums.nas4free.org/viewtopic.php?f=17&t=10028
>>>
>>> Latest download:
>>> http://www.peach.ne.jp/archives/nas4free/test/2244-dom0/
>>>
>>> How to install:
>>> 1.Download LiveCD iso image.
>>> 2.Burn to CD/DVD-RW blank disc.
>>> 3.Boot from it.
>>> (if your server don't have an optical drive, please use an external USB
>>> optical drive)
>>> 4.Install to USB Flash drive (2GB or more) from menu #9.
>>> 5.Reboot the server after ejecting CD/DVD media.
>>>
>>> How to upgrade:
>>> 1.Navigate to System|Firmware in global menu from web browser.
>>> 2.Click "Enable Firmware Update".
>>> 3.Select NAS4Free-dom0-embedded-*.img.xz. (don't decompress the image)
>>> 4.Click "Upgrade Firmware".
> 
> I forget to write. You should backup the config from
> System|Backup/Restore before upgrading.
> 
>>>
>>> Note:
>>> At least you need a bridge interface before using.
>>> Please create it from Network|Interface Management|Bridge.
>>> You can change boot parameters from System|Advanced|loader.conf.
>>> If you are interested in the xl.cfg, it is created in
>>> /usr/local/etc/xen/vm-<VMNAME>.cfg.
>>
>> Thanks for doing this, I just gave it a try and it worked out of the
>> box, I was able to create and launch a Windows VM in less than 2min,
>> quite impressive :).
> 
> Thank you for trying.
> 
>>
>>> Known issues:
>>> uuid generation of ports/sysutils/xen-tools is broken. You cannot
>>> control by UUID.
>>> (quick hack patch is attached this mail)
>>
>> I've given a look at the patch, but I have to admit I know very little
>> about UUID, yet it seems like you should not poke directly at the
>> internal uuid_t fields. I've created another patch which I *think*
>> should solve the UUID issues, could you test it please? It should apply
>> cleanly against Xen 4.5.
>>
>> https://people.freebsd.org/~royger/uuid.patch
> 
> Your patch does not work as expected.
> You can test it under normal FreeBSD. First create UUID by uuidgen(1):
> 
> # uuidgen
> 4c90eb5a-adee-11e5-a747-001b2157b424
> 
> Insert the UUID to your VM config (see also
> /usr/local/etc/xen/vm-<VMNAME>.cfg):
> uuid = "4c90eb5a-adee-11e5-a747-001b2157b424"
> 
> Run the VM:
> # xl create name.cfg
> 
> Check by xl list:
> # xl list -v
> # xl list -l
> 
> Your patched result is here:
> [root_at_nas4free-xen ~]# xl list -v
> Name                                        ID   Mem VCPUs      State  
> Time(s)   UUID Reason-Code   Security Label
> Domain-0                                     0  4096     4    
> r-----     202.8 00000000-0000-0000-0000-000000000000       
> -                -
> nas4free                                     4  2048     2    
> -b----      51.1 00000000-0000-0000-0000-000000000000       
> -                -
> 
>>> xnb device performance is terrible.
>>> (it eats 100% CPU on intr while transferring via bridged 10GbE)
>>
>> I haven't seen this, but I'm not surprised (I also don't have a 10GbE
>> card at hand right now). There's a lot of fine tuning and bug fixing to
>> do regarding the backends. I plan to get with this once the PVH
>> implementation is stable.
> 
> I feel UUID is very small thing than performance 70% drop down via xnb.

Hello,

Could you please test the following patch, it should fix UUID:

https://people.freebsd.org/~royger/0001-libxl-fix-UUID-usage-on-FreeBSD.patch

I understand that the netback performance issue is a big handicap, I
will try to find some time to look into it, but I have to admit my plate
is quite full at the moment and it doesn't look like a trivial issue
(like the UUID one).

I'm adding Wei to the Cc, he has been working on netfront improvements,
so maybe he also wants to take a stab at netback ;).

Roger.