« Freenas with Xen » : différence entre les versions

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'''note''' : this tutorial applies to '''Freenas 9.3'''. Feenas 9.10 (based on FreeBSD 10) and upward natively includes the optimizations for Xen and LSI cards described here.
This howto is based on the excellent work made by [http://mywiredhouse.net/blog/building-freenas-xen-pvhvm-support/ My Wired House]. It aims at building [http://www.freenas.org/ FreeNAS] with Xen PVHVM support and ultimately at putting it into production with PCI passthrough.<br />
This howto is based on the excellent work made by [http://mywiredhouse.net/blog/building-freenas-xen-pvhvm-support/ My Wired House]. It aims at building [http://www.freenas.org/ FreeNAS] with Xen PVHVM support and ultimately at putting it into production with PCI passthrough.<br />


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=== Install Freenas dependencies ===
=== Install Freenas dependencies ===


Cf [https://github.com/freenas/freenas/tree/9.3.1-STABLE Readme on Github]  
Cf [https://github.com/freenas/freenas/tree/9.3-STABLE Readme on Github]  


<syntaxhighlight lang="bash">
<syntaxhighlight lang="bash">
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</syntaxhighlight>
</syntaxhighlight>


=== Clone Freenas 9.3.1-STABLE branch ===
=== Clone Freenas 9.3-STABLE branch ===


Clone the Freenas 9.3.1-STABLE branch from [https://github.com/freenas/freenas Github]
Clone the Freenas 9.3-STABLE branch from [https://github.com/freenas/freenas Github]


<syntaxhighlight lang="bash">
<syntaxhighlight lang="bash">
mkdir /home
mkdir /home
cd /home && git clone https://github.com/freenas/freenas.git
cd /home && git clone https://github.com/freenas/freenas.git
cd freenas && git checkout 9.3.1-STABLE
cd freenas && git checkout 9.3-STABLE
make checkout
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</syntaxhighlight>


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<syntaxhighlight lang="bash">
<syntaxhighlight lang="bash">
make checkout
env _KEY=set NANO_LABEL=FreeNAS VERSION=9.3.1-STABLE-xen \
GIT_LOCATION=EXTERNAL \
BUILD_TIMESTAMP=`date '+%Y%m%d%H%M'` \
SEQUENCE=FreeNAS-9.3-STABLE-xen-201508250051 \
TRAIN=FreeNAS-9.3-STABLE-xen \
UPDATE_USER=sef FREENAS_KEYFILE=Keys/ix-nightly-key.key \
CHANGELOG=ChangeLog \
make release
make release
</syntaxhighlight>
</syntaxhighlight>
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<syntaxhighlight lang="bash">
<syntaxhighlight lang="bash">
ls /home/freenas/objs/FreeNAS-9.3-STABLE-xen-201506052152/x64
ls /home/freenas/objs/FreeNAS-9.3.1-STABLE-xen-201509111019/x64
FreeNAS-9.3-STABLE-xen-201506052152.GUI_Upgrade.txz            FreeNAS-9.3-STABLE-xen-201506052152.iso
FreeNAS-9.3-STABLE-xen-201509111019.GUI_Upgrade.txz            FreeNAS-9.3-STABLE-xen-201509111019.iso
FreeNAS-9.3-STABLE-xen-201506052152.GUI_Upgrade.txz.sha256.txt  FreeNAS-9.3-STABLE-xen-201506052152.iso.sha256.txt
FreeNAS-9.3-STABLE-xen-201509111019.GUI_Upgrade.txz.sha256.txt  FreeNAS-9.3-STABLE-xen-201509111019.iso.sha256.txt
</syntaxhighlight>
</syntaxhighlight>


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Installation is done through the following steps :
Installation is done through the following steps :


* boot of the installer with special option ''hint.hpet.0.clock=0'' and without PCI passthrough
* boot of the installer without PCI passthrough
* first boot of the fresh Freenas installation with special option ''hint.hpet.0.clock=0'' (yes again ...) and without PCI passthrough
* first boot of the fresh Freenas installation without PCI passthrough
* in Freenas, adding the necessary options for the bootloader and PCI passthrgouh ... And the last reboot with PCI passthrough activated
* in Freenas, adding the necessary options for PCI passthrgouh ... And the last reboot with PCI passthrough activated


=== Xl config file ===
=== Xl config file ===
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=== Booting the installer ===
=== Booting the installer ===
Because of this [https://bugs.freenas.org/issues/7376 little issue], booting the installer requires special option ''hint.hpet.0.clock=0''


* Start the vm  
* Start the vm  
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</syntaxhighlight>
</syntaxhighlight>


* As soon as the VM boots, open the console (e.g. via VNC), go to the Grub command prompt by pressing "c" and enter the following lines :
<!-- * As soon as the VM boots, open the console (e.g. via VNC), go to the Grub command prompt by pressing "c" and enter the following lines : -->
<!-- <gallery> -->
<!-- Fichier:Grub.png|Grub options to start the installer -->
<!-- </gallery> -->


<gallery>
* Follow the steps to install Freenas ; choose the volume named xbd0 which reflects the use of PV drivers
Fichier:Grub.png|Grub options to start the installer
</gallery>
 
* Follow the steps to install Freenas ; note the name of the volume (xbd0) which reflects the use of PV drivers


=== Booting your fresh Freenas installation ===
=== Booting your fresh Freenas installation ===


Once again, because of this [https://bugs.freenas.org/issues/7376 little issue], booting the fresh Freenas installation for the first time requires special option ''hint.hpet.0.clock=0''
<!-- Once again, because of this [https://bugs.freenas.org/issues/7376 little issue], booting the fresh Freenas installation for the first time requires special option ''hint.hpet.0.clock=0'' -->


* As soon as the VM reboots after Freenas installation, reopen the console (e.g. via VNC), go to the Grub command prompt by pressing "c" and enter the following lines :
<!-- * As soon as the VM reboots after Freenas installation, reopen the console (e.g. via VNC), go to the Grub command prompt by pressing "c" and enter the following lines :


<syntaxhighlight lang="bash">
<!-- <syntaxhighlight lang="bash"> -->
grub> insmod zfs
<!-- grub> insmod zfs -->
grub> kfreebsd /ROOT/default/@/boot/kernel/kernel
<!-- grub> kfreebsd /ROOT/default/@/boot/kernel/kernel -->
grub> kfreebsd_loadenv /ROOT/default@/boot/device.hints
<!-- grub> kfreebsd_loadenv /ROOT/default@/boot/device.hints -->
grub> set kFreeBSD.kernelname="/boot/kernel/kernel"
<!-- grub> set kFreeBSD.kernelname="/boot/kernel/kernel" -->
grub> kfreebsd_module /ROOT/default/@/boot/zfs/rpool.cache type=/boot/zfs/zpool.cache
<!-- grub> kfreebsd_module /ROOT/default/@/boot/zfs/rpool.cache type=/boot/zfs/zpool.cache -->
grub> set kFreeBSD.vfs.root.mountfrom=zfs:freenas-boot/ROOT/default
<!-- grub> set kFreeBSD.vfs.root.mountfrom=zfs:freenas-boot/ROOT/default -->
grub> kfreebsd_module_elf /ROOT/default/@/boot/kernel/ispfw.ko
<!-- grub> kfreebsd_module_elf /ROOT/default/@/boot/kernel/ispfw.ko -->
grub> set kFreeBSD.hint.hpet.0.clock=0
<!-- grub> set kFreeBSD.hint.hpet.0.clock=0 -->
grub> boot
<!-- grub> boot -->
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<!-- </syntaxhighlight> -->


* In Freenas GUI, go to "System" -> "Tunales" -> "Add Tunable" :
<!-- * In Freenas GUI, go to "System" -> "Tunales" -> "Add Tunable" : -->
** Variable : hint.hpet.0.clock
<!-- ** Variable : hint.hpet.0.clock -->
** Value : 0
<!-- ** Value : 0
** Type : loader
<!-- ** Type : loader -->


* For PCI passthrough with LSI devices such as [http://www.lsi.com/products/host-bus-adapters/pages/lsi-sas-9211-8i.aspx LSI 9211-8i] (LSI 9211 cards in IT mode are recommanded with Freenas), two more tunables are required ; in Freenas GUI, go to "System" -> "Tunables" -> "Add Tunable" :
For PCI passthrough with LSI devices such as [http://www.lsi.com/products/host-bus-adapters/pages/lsi-sas-9211-8i.aspx LSI 9211-8i] (LSI 9211 cards in IT mode are recommanded with Freenas), two more tunables are required ; in Freenas GUI, go to "System" -> "Tunables" -> "Add Tunable" :
** Variable : hw.pci.enable_msi
* Variable : hw.pci.enable_msi
** Value : 1
** Value : 1
** Type : sysctl
** Type : sysctl
** Variable : hw.pci.enable_msix
* Variable : hw.pci.enable_msix
** Value : 0
** Value : 0
** Type : sysctl
** Type : sysctl

Dernière version du 29 mars 2021 à 10:51

note : this tutorial applies to Freenas 9.3. Feenas 9.10 (based on FreeBSD 10) and upward natively includes the optimizations for Xen and LSI cards described here.

This howto is based on the excellent work made by My Wired House. It aims at building FreeNAS with Xen PVHVM support and ultimately at putting it into production with PCI passthrough.

Build environment

  • Install Freebsd 9.3 (in a domU for example)
  • Make a few adjustements
  • Build Freenas

Installation of Freebsd 9.3 in a domU

  • Install Freebsd 9.3 on a disk / volume of 100 Go (building Frenas requires space !)
  • Configuration file for Xl
#
#  Kernel + memory size
#
builder      = 'hvm'
boot         = 'cd'
memory       = '2048'
vcpus        = '1'

#
#  Disk device(s).
#
disk        = [
                  'phy:/dev/system/freebsd-disk,xvda,w', 
                  'file:/opt/ISO/FreeBSD-9.3-RELEASE-amd64-bootonly.iso,hdc:cdrom,r'
              ]


#
#  Hostname
#
name        = 'freebsd'

#
#  Networking
#
vif         = [ 'mac=00:16:3e:xx:xx:xx, model=e1000' ]

#
#  Behaviour
#
on_poweroff = 'destroy'
on_reboot   = 'restart'
on_crash    = 'restart'

sdl=0
vnc = 1
vncunused = 1
vnclisten = '0.0.0.0'
stdvga=0
serial='pty'
usb=0
keymap='fr'
localtime=1
  • Note: To speed up the process, add RAM and vCPUs if you can !

Update & PVHVM configuration (to boost performances)

freebsd-update fetch
freebsd-update install
reboot
cd /usr/src
make buildkernel KERNCONF=XENHVM
make installkernel KERNCONF=XENHVM
sed -i".backup" 's/ada/xbd/g' /etc/fstab
sed -i".backup" 's/ifconfig_em0/ifconfig_xn0/' /etc/rc.conf
reboot

Building Freenas

Install Freenas dependencies

Cf Readme on Github

pkg install poudriere-devel git cdrtools pxz python grub2-pcbsd xorriso py27-sphinx py27-sphinxcontrib-httpdomain-1.2.1

Clone Freenas 9.3-STABLE branch

Clone the Freenas 9.3-STABLE branch from Github

mkdir /home
cd /home && git clone https://github.com/freenas/freenas.git
cd freenas && git checkout 9.3-STABLE
make checkout

A few adjustements on Freenas sources

  • Modify "VERSION" in Makefile to reflect the custom release :
sed -i".backup" 's/VERSION\?=9.3.1-STABLE/VERSION\?=9.3.1-STABLE-xen/ ; s/TRAIN\?=\${NANO_LABEL}-9.3-STABLE/TRAIN\?=${NANO_LABEL}-9.3-STABLE-xen/' /home/freenas/Makefile
  • Edit /home/freenas/build/nanobsd-cfg/FREENAS.amd64 and at the end, add theses lines :
options         NO_ADAPTIVE_MUTEXES
options         NO_ADAPTIVE_RWLOCKS
options         NO_ADAPTIVE_SX

# Xen HVM support
options         XENHVM
device          xenpci
  • Remove the "problematic" "set -e" in create_iso.sh (I know, this is bad but the process would stop at this stage if not ...) :
sed -i".backup" 's/set -e/#set -e/' /home/freenas/build/create_iso.sh

Build !

Depending on the ressources allocated to your Freebsd build machine, it will take a while !

make release

If all went well, you will find the result in /home/freenas/objs/FreeNAS-9.3-STABLE-xen-201506052152/x64 :

ls /home/freenas/objs/FreeNAS-9.3.1-STABLE-xen-201509111019/x64
FreeNAS-9.3-STABLE-xen-201509111019.GUI_Upgrade.txz             FreeNAS-9.3-STABLE-xen-201509111019.iso
FreeNAS-9.3-STABLE-xen-201509111019.GUI_Upgrade.txz.sha256.txt  FreeNAS-9.3-STABLE-xen-201509111019.iso.sha256.txt

Installation of Freenas 9.3 in a domU

Installation is done through the following steps :

  • boot of the installer without PCI passthrough
  • first boot of the fresh Freenas installation without PCI passthrough
  • in Freenas, adding the necessary options for PCI passthrgouh ... And the last reboot with PCI passthrough activated

Xl config file

#
#  Kernel + memory size
#
builder      = 'hvm'
boot         = 'cd'
memory       = '8192'
vcpus        = '2'

#
#  Disk device(s).
#
disk        = [
                  'phy:/dev/system/freenas-disk,xvda,w',
                  'file:/opt/ISO/FreeNAS-9.3-STABLE-xen-201506052152.iso,hdb:cdrom,r'
              ]


#
#  Hostname
#
name        = 'freenas'

#
#  Networking
#
vif         = [ 'mac=00:16:3e:xx:xx:xx, model=e1000' ]

#
#  Behaviour
#
on_poweroff = 'destroy'
on_reboot   = 'restart'
on_crash    = 'restart'

sdl=0
vnc = 1
vncunused = 1
vnclisten = '0.0.0.0'
stdvga=0
serial='pty'
usb=0
keymap='fr'
localtime=1

Booting the installer

  • Start the vm
xl create /etc/xen/freenas.ld


  • Follow the steps to install Freenas ; choose the volume named xbd0 which reflects the use of PV drivers

Booting your fresh Freenas installation

For PCI passthrough with LSI devices such as LSI 9211-8i (LSI 9211 cards in IT mode are recommanded with Freenas), two more tunables are required ; in Freenas GUI, go to "System" -> "Tunables" -> "Add Tunable" :

  • Variable : hw.pci.enable_msi
    • Value : 1
    • Type : sysctl
  • Variable : hw.pci.enable_msix
    • Value : 0
    • Type : sysctl