xen November 2009

xen@lists.fedoraproject.org

13 participants
19 discussions

Re: [Xen-users] Re: How to Backup and Restore MBR within Logical Volumes?
by Mr. Teo En Ming (Zhang Enming) 12 Nov '09

12 Nov '09

Hi, I don't think I will be using the LVM snapshot method. I will simply ensure that my domU is not running, then I proceed to do the losetup and kpartx procedure. Subsequently I will backup the MBR of my domU by dd-ing /dev/loopX and clone all the filesystems of the domU using fsarchiver. I would like to use fsarchiver because it can support LZMA compression. LZMA can compress better than bzip2 and decompress 3x faster than bzip2. partimage only supports gzip and bzip2. -- Mr. Teo En Ming (Zhang Enming) Dip(Mechatronics) BEng(Hons)(Mechanical Engineering) Alma Maters: (1) Singapore Polytechnic (2) National University of Singapore My Primary Blog: http://teo-en-ming-aka-zhang-enming.blogspot.com My Secondary Blog: http://enmingteo.wordpress.com My Youtube videos: http://www.youtube.com/user/enmingteo Email: space.time.universe(a)gmail.com Mobile Phone (Starhub Prepaid): +65-8369-2618 Street: Bedok Reservoir Road Country: Singapore On Thu, Nov 12, 2009 at 10:02 AM, Fajar A. Nugraha <fajar(a)fajar.net> wrote: > On Thu, Nov 12, 2009 at 4:52 PM, Mr. Teo En Ming (Zhang Enming) > <space.time.universe(a)gmail.com> wrote: > > Now I can proceed with writing the > > backup and restore script for my Fedora 11 Dom0 (all partitions using > LVM2 > > logical volumes) and all of my Xen virtual machines (contained in logical > > volumes). > > A reminder though: don't forget to create a "consistent", unchanging > version of domU storage before doing backup. Either by shutting down > domU, or by creating LVM snapshot first. > > Also, if it comes to Windows domUs, I find ntfsclone is better than > fsarchiver. One of the reasons is that fsarchiver can not create > compressed files during restore. > > -- > Fajar >

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Re: How to Backup and Restore MBR within Logical Volumes?
by Mr. Teo En Ming (Zhang Enming) 12 Nov '09

12 Nov '09

> Maybe I didn't really understand your setup, but... isn't your mbr simply on /dev/loop1? Yes, you are right. root@sysresccd /mnt/hitachi/test % fdisk -l /dev/loop1 Disk /dev/loop1: 53.7 GB, 53687091200 bytes 255 heads, 63 sectors/track, 6527 cylinders Units = cylinders of 16065 * 512 = 8225280 bytes Disk identifier: 0x2b362b35 Device Boot Start End Blocks Id System /dev/loop1p1 * 1 6526 52420063+ 7 HPFS/NTFS I am so used with device nomenclature of harddisks being /dev/hda, /dev/hdb, /dev/sda, /dev/md0, /dev/xvda, etc that it didn't occur to me that the device node of my virtual machine in a logical volume is very simply /dev/loop1 after I have performed the "losetup /dev/loop1 /dev/volumegroup/logicalvolume" step. Thank you very much for enlightening me! Now I can proceed with writing the backup and restore script for my Fedora 11 Dom0 (all partitions using LVM2 logical volumes) and all of my Xen virtual machines (contained in logical volumes). -- Mr. Teo En Ming (Zhang Enming) Dip(Mechatronics) BEng(Hons)(Mechanical Engineering) Alma Maters: (1) Singapore Polytechnic (2) National University of Singapore My Primary Blog: http://teo-en-ming-aka-zhang-enming.blogspot.com My Secondary Blog: http://enmingteo.wordpress.com My Youtube videos: http://www.youtube.com/user/enmingteo Email: space.time.universe(a)gmail.com Mobile Phone (Starhub Prepaid): +65-8369-2618 Street: Bedok Reservoir Road Country: Singapore On Thu, Nov 12, 2009 at 9:38 AM, Roberto Ragusa <mail(a)robertoragusa.it>wrote: > Mr. Teo En Ming (Zhang Enming) wrote: > > > # kpartx -av /dev/loop1 > [...] > > But the problem is that I can only backup/clone the filesystems of my > > virtual machine within a logical volume. I can't backup the Master Boot > > Record (MBR) of the virtual machine within a logical volume. For example, > > > > dd if=/dev/hda of=mbr.hda bs=512 count=1 > > > > Because /dev/hda resides in a logical volume. The logical volume is a > > virtual harddisk for my virtual machine. > > Maybe I didn't really understand your setup, but... isn't your mbr > simply on /dev/loop1? > > -- > Roberto Ragusa mail at robertoragusa.it > > -- > fedora-list mailing list > fedora-list(a)redhat.com > To unsubscribe: https://www.redhat.com/mailman/listinfo/fedora-list > Guidelines: > http://fedoraproject.org/wiki/Communicate/MailingListGuidelines >

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[Xen-devel] [ANNOUNCE] Xen 3.4.2 released
by Pasi Kärkkäinen 10 Nov '09

10 Nov '09

----- Forwarded message from Keir Fraser <keir.fraser(a)eu.citrix.com> ----- From: Keir Fraser <keir.fraser(a)eu.citrix.com> To: "xen-devel(a)lists.xensource.com" <xen-devel(a)lists.xensource.com>, xen-users(a)lists.xensource.com Cc: Date: Tue, 10 Nov 2009 16:38:59 +0000 Subject: [Xen-devel] [ANNOUNCE] Xen 3.4.2 released Folks, Xen 3.4.2 is the latest maintenance release in the 3.4 stable branch. There are a range of bug fixes since 3.4.1, and we recommend users to upgrade. The source repository can be downloaded from: http://xenbits.xensource.com/xen-3.4-testing.hg The release is tagged 'RELEASE-3.4.2'. Alternatively source tarballs can be downloaded from: http://www.xen.org/products/xen_source.html -- Keir _______________________________________________ Xen-devel mailing list Xen-devel(a)lists.xensource.com http://lists.xensource.com/xen-devel ----- End forwarded message -----

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Disappointed with the Upcoming Fedora 12 Release
by Mr. Teo En Ming (Zhang Enming) 10 Nov '09

10 Nov '09

Hi, Fedora is my favorite Linux distribution. I have been eagerly anticipating the upcoming release of Fedora 12 but am disappointed to discover that it will not support Xen pv-ops dom0 kernel. <QUOTE> Xen Kernel Support The kernel package in Fedora 12 supports booting as a guest domU, but will not function as a dom0 until such support is provided upstream. Work is ongoing and hopes are high that support will be included in kernel 2.6.33 and Fedora 13. The most recent Fedora release with dom0 support is Fedora 8. </QUOTE> Link: http://fedoraproject.org/wiki/Docs/Beats/Virtualization Here is a list of my Xen pv-ops dom0-related videos on Youtube so far. I am using Fedora 11 x86_64 as my host operating system. [1] PCI Express x16 VGA Passthrough to Xen-based Windows XP Home HVM Virtual Machine Part 1 of 2 Link: http://www.youtube.com/watch?v=HNEiSInrav0 [2] PCI Express x16 VGA Passthrough to Xen-based Windows XP Home HVM Virtual Machine Part 2 of 2 Link: http://www.youtube.com/watch?v=_hOT_9LIG5w [3] The Final Solution: Open Source Xen VGA Passthrough Link: http://www.youtube.com/watch?v=1ia3IwG6tp4 [4] Playing 3D FPS Game Alien Arena in Xen-based Windows XP Home Edition HVM Virtual Machine Link: http://www.youtube.com/watch?v=5tLzYqIJ7Q0 [5] Xen Virtualization VGA Passthrough: 3D Gaming Benchmark Results Part 2 of 2 Link: http://www.youtube.com/watch?v=yYg6n8yBktM [6] Xen Virtualization VGA Passthrough: 3D Gaming Benchmark Results Part 1 of 2 Link: http://www.youtube.com/watch?v=5I13E1MQbMc [7] Xen Virtualization VGA Passthrough: Disk I/O Benchmark Results Link: http://www.youtube.com/watch?v=uL7JS4PMpzY [8] Xen Virtualization VGA Passthrough: PerformanceTest 7.0 Virtual CPU Benchmark Results Link: http://www.youtube.com/watch?v=vLR-o9tX_Tw [9] Xen Virtualization VGA Passthrough: SiSoftware Sandra Virtual Processor Benchmark Part 1 of 2 Link: http://www.youtube.com/watch?v=BUXOAPce_40 [10] Xen Virtualization VGA Passthrough: SiSoftware Sandra Virtual Processor Benchmark Part 2 of 2 Link: http://www.youtube.com/watch?v=k5lle8WOHLE [11] Xen Virtualization VGA Passthrough: Playing 3D FPS Games in Windows XP HVM Virtual Machine Link: http://www.youtube.com/watch?v=Pikwgl8bac8 [12] Xen Virtualization & Intel VT-d: Direct Hardware Access to Graphics Card by Windows Virtual Machines Link: http://www.youtube.com/watch?v=HHUwg_zxYgw [13] Xen Virtualization, VT-d, VGA Passthrough, & Windows XP HVM Virtual Machine: Super PI 32M Benchmark Link: http://www.youtube.com/watch?v=3mxuNRiMxDU [14] Xen Virtualization: Super PI 32M Benchmark 2nd Iteration Link: http://www.youtube.com/watch?v=m7W0OFFcw7I [15] How to Setup a Virtual Supercomputer Center or HPC Cluster using Xen Virtual Machines Part 1 of 2 Link: http://www.youtube.com/watch?v=GmNKi6CoExM [16] How to Setup a Virtual Supercomputer Center or HPC Cluster using Xen Virtual Machines Part 2 of 2 Link: http://www.youtube.com/watch?v=dAqDESEWMjM [17] Building a Rocks HPC Cluster with Xen Hardware Virtual Machines (HVM) Link: http://www.youtube.com/watch?v=LbLaPpwNAx4 [18] Building a Rocks HPC Cluster with Xen Hardware Virtual Machines (HVM) (Update 1) Link: http://www.youtube.com/watch?v=vWHIImVBr4o Because of the absence of official support for Xen pv-ops dom0 kernel in Fedora 11, I have to manually and laboriously configure my home multimedia and general purpose desktop system over a period of 2-3 months. Admittedly I have gained a lot of useful knowledge throughout the process. Thanks to Boris' setup guides, and assistance from Pasi, Han Weidong from Intel Corp, Jeremy Fitzhardinge from Citrix, and the rest of the Xen developers community, I have managed to get a fully working Xen pv-ops dom0 Fedora 11 host operating system. It will be a daunting task for newbie Linux users who want to setup a Xen pv-ops dom0 system with the more recent releases of Fedora. Please do consider including Xen pv-ops dom0 kernel in the next release of Fedora. Michael Young has Xen dom0 kernel RPM packages for FC12. I am surprised that they are not included in the upcoming Fedora 12 release. Link: http://myoung.fedorapeople.org/dom0/x86_64/ Thank you. -- Mr. Teo En Ming (Zhang Enming) Dip(Mechatronics) BEng(Hons)(Mechanical Engineering) Alma Maters: (1) Singapore Polytechnic (2) National University of Singapore My Primary Blog: http://teo-en-ming-aka-zhang-enming.blogspot.com My Secondary Blog: http://enmingteo.wordpress.com My Youtube videos: http://www.youtube.com/user/enmingteo Email: space.time.universe(a)gmail.com Mobile Phone (Starhub Prepaid): +65-8369-2618 Street: Bedok Reservoir Road Country: Singapore

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Fedora 12: virt-install does not set graphical console keymap automatically for Xen guests
by Pasi Kärkkäinen 09 Nov '09

09 Nov '09

Hello, I've been playing with Xen stuff on Fedora 12 host/dom0, and I noticed the Xen PV guest graphical console (vfb) keymap is not set up automatically anymore, like it was with RHEL5 version of virt-install/virt-manager tools. I opened bugzilla entry about this: https://bugzilla.redhat.com/show_bug.cgi?id=533707 -- Pasi

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Fedora 12 (rawhide) Xen domU works now, minor console keymap issue?
by Pasi Kärkkäinen 08 Nov '09

08 Nov '09

Hello, Kernel 2.6.31-0.203.rc8.git2.fc12.i686.PAE for F12/rawhide domU seems to work now on my F11 host with xen-3.4.1-3 + libvirt from F11 updates-testing + 2.6.31-rc6 pv_ops dom0 kernel. There's a minor issue with domU vfb graphical console keymap though.. The F11 host has 'fi' (Finnish) keymap, and the F12 domU/guest is also installed with 'fi' keymap. All the 'special' keys on the graphical console (virt-viewer) are broken.. I don't really know what the resulting keymap is, but it's pretty weird. Not english, not finnish, not anything I know of.. List of the important characters that are broken: * / - _ | ? \ ( ) Either you can't make them at all, or you have to press totally wrong buttons to get them.. so the console is really painful or impossible to use. Any ideas how to debug this? Or is non-US even supposed to work? Thanks! -- Pasi

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RE: [Xen-devel] Virt-manager issue resolved
by Caz Yokoyama 07 Nov '09

07 Nov '09

Could you summarize the procedure? I am trying to run virt-manager on Fedora 11 with Xen-3.5-unstable and Jeremy's Dom0 (git://git.kernel.org/pub/scm/linux/kernel/git/Jeremy/xen.git) I am wondering what option should be good on make on xen-3.5-unstable. I did Make xen tools Make install-xen install-tools What else I need do? Booting dom0 is fine. -caz _____ From: xen-devel-bounces(a)lists.xensource.com [mailto:xen-devel-bounces@lists.xensource.com] On Behalf Of Fasiha Ashraf Sent: Tuesday, October 27, 2009 4:49 AM To: Cole Robinson; xen Cc: Fedora Xen; virt-tools-list(a)redhat.com Subject: [Xen-devel] Virt-manager issue resolved I have got para-virt option enabled by installing vm using through http. the problem was, i was trying to install it from DVD. Now the issue is it doesn't find the file on the givern location although i can access them from the same location in browser. PFA, the screen shots for the problem. Regards Fasiha Ashraf --- On Mon, 26/10/09, Cole Robinson <crobinso(a)redhat.com> wrote: From: Cole Robinson <crobinso(a)redhat.com> Subject: Re: [virt-tools-list] Unable to complete install: 'Domain not found: xenUnifiedDomainLookupByName To: "Fasiha Ashraf" <feehapk(a)yahoo.co.in> Cc: virt-tools-list(a)redhat.com, bderzhavets(a)yahoo.com, "Xen users" <james.harper(a)bendigoit.com.au>, "Fedora Xen" <fedora-xen(a)redhat.com> Date: Monday, 26 October, 2009, 7:08 PM On 10/26/2009 09:24 AM, Fasiha Ashraf wrote: > It seem that its trying to install HVM guest that is not possible using virt-manager. > But you can see from the attached screen shot that virt type option is disabled and i can't select paravirt from it. what should i do? > here's the log .virt-manager/virt-manager.log > Please include the other information I asked for: virsh --connect xen:/// capabilities virsh --connect xen:/// version - Cole > [Mon, 26 Oct 2009 16:11:51 virt-manager 3019] DEBUG (DistroInstaller:119) DistroInstaller location is a local file/path: /dev/sr0 > [Mon, 26 Oct 2009 16:12:01 virt-manager 3019] DEBUG (DistroInstaller:119) DistroInstaller location is a local file/path: /dev/sr0 > [Mon, 26 Oct 2009 16:12:01 virt-manager 3019] DEBUG (create:877) Default storage path is: /var/lib/libvirt/images/f.img > [Mon, 26 Oct 2009 16:12:01 virt-manager 3019] DEBUG (VirtualDisk:737) Path '/var/lib/libvirt/images' is target for pool 'default'. Creating volume 'f.img'. > [Mon, 26 Oct 2009 16:12:17 virt-manager 3019] DEBUG (DistroInstaller:119) DistroInstaller location is a local file/path: /dev/sr0 > [Mon, 26 Oct 2009 16:12:17 virt-manager 3019] DEBUG (create:877) Default storage path is: /var/lib/libvirt/images/f.img > [Mon, 26 Oct 2009 16:12:17 virt-manager 3019] DEBUG (VirtualDisk:737) Path '/var/lib/libvirt/images' is target for pool 'default'. Creating volume 'f.img'. > [Mon, 26 Oct 2009 16:12:17 virt-manager 3019] DEBUG (create:1516) Creating a VM f > Type: xen,hvm > UUID: 01f35eb7-fe09-c231-bfe0-1e9bfc6ff5a3 > Install Source: /dev/sr0 > OS: linux:fedora11 > Kernel args: None > Memory: 512 > Max Memory: 512 > # VCPUs: 1 > Filesize: 7.0 > [Mon, 26 Oct 2009 16:12:17 virt-manager 3019] DEBUG (create:1565) Starting background install process > [Mon, 26 Oct 2009 16:12:18 virt-manager 3019] DEBUG (Storage:950) Creating storage volume 'f.img' with xml: > <volume> > <name>f.img</name> > <capacity>7516192768</capacity> > <allocation>7516192768</allocation> > <target> > <format type='raw'/> > </target> > </volume> > [Mon, 26 Oct 2009 16:13:08 virt-manager 3019] DEBUG (Storage:973) Storage volume 'f.img' install complete. > [Mon, 26 Oct 2009 16:13:10 virt-manager 3019] DEBUG (Guest:724) Creating guest from: > <domain type='xen'> > <name>f</name> > <currentMemory>524288</currentMemory> > <memory>524288</memory> > <uuid>01f35eb7-fe09-c231-bfe0-1e9bfc6ff5a3</uuid> > <os> > <type arch='x86_64'>hvm</type> > <loader>/usr/lib/xen/boot/hvmloader</loader> > <boot dev='cdrom'/> > </os> > <features> > <acpi/><apic/><pae/> > </features> > <clock offset="utc"/> > <on_poweroff>destroy</on_poweroff> > <on_reboot>destroy</on_reboot> > <on_crash>destroy</on_crash> > <vcpu>1</vcpu> > <devices> > <emulator>/usr/lib64/xen/bin/qemu-dm</emulator> > <disk type='file' device='disk'> > <source file='/var/lib/libvirt/images/f.img'/> > <target dev='hda' bus='ide'/> > </disk> > <disk type='block' device='cdrom'> > <source dev='/dev/sr0'/> > <target dev='hdc' bus='ide'/> > <readonly/> > </disk> > <interface type='bridge'> > <source bridge='eth0'/> > <mac address='00:16:36:08:9e:36'/> > </interface> > <input type='tablet' bus='usb'/> > <graphics type='vnc' port='-1'/> > <console type='pty'/> > <sound model='es1370'/> > </devices> > </domain> > > [Mon, 26 Oct 2009 16:13:10 virt-manager 3019] DEBUG (netdevhelper:176) Adding net device vif3.0 fe:ff:ff:ff:ff:ff /sys/class/net/vif3.0 (bridge: None) > [Mon, 26 Oct 2009 16:13:12 virt-manager 3019] DEBUG (engine:187) Tick is slow, not running at requested rate. > [Mon, 26 Oct 2009 16:13:13 virt-manager 3019] DEBUG (engine:187) Tick is slow, not running at requested rate. > [Mon, 26 Oct 2009 16:13:14 virt-manager 3019] DEBUG (engine:187) Tick is slow, not running at requested rate. > [Mon, 26 Oct 2009 16:13:15 virt-manager 3019] DEBUG (engine:187) Tick is slow, not running at requested rate. > [Mon, 26 Oct 2009 16:14:46 virt-manager 3019] DEBUG (netdevhelper:138) Removing physical net device vif3.0 from list. > [Mon, 26 Oct 2009 16:14:46 virt-manager 3019] DEBUG (opticalhelper:205) Optical device removed: /org/freedesktop/Hal/devices/net_fe_ff_ff_ff_ff_ff > [Mon, 26 Oct 2009 16:14:46 virt-manager 3019] DEBUG (error:76) Uncaught Error: Unable to complete install: 'POST operation failed: xend_post: error from xen $ > Traceback (most recent call last): > File "/usr/share/virt-manager/virtManager/create.py", line 1575, in do_install > dom = guest.start_install(False, meter = meter) > File "/usr/lib/python2.6/site-packages/virtinst/Guest.py", line 628, in start_install > File "/usr/lib/python2.6/site-packages/virtinst/Guest.py", line 628, in start_install > return self._do_install(consolecb, meter, removeOld, wait) > File "/usr/lib/python2.6/site-packages/virtinst/Guest.py", line 726, in _do_install > self.domain = self.conn.createLinux(install_xml, 0) > File "/usr/lib64/python2.6/site-packages/libvirt.py", line 1077, in createLinux > if ret is None:raise libvirtError('virDomainCreateLinux() failed', conn=self) > libvirtError: POST operation failed: xend_post: error from xen daemon: <Fault 3: 'f'> > ' > [Mon, 26 Oct 2009 16:16:38 virt-manager 3019] DEBUG (engine:377) window counter decremented to 0 > [Mon, 26 Oct 2009 16:16:38 virt-manager 3019] DEBUG (engine:385) Exiting app normally. > > > > Fasiha Ashraf > > --- On Mon, 26/10/09, Cole Robinson <crobinso(a)redhat.com> wrote: > > From: Cole Robinson <crobinso(a)redhat.com> > Subject: Re: [virt-tools-list] Unable to complete install: 'Domain not found: xenUnifiedDomainLookupByName > To: "Fasiha Ashraf" <feehapk(a)yahoo.co.in> > Cc: virt-tools-list(a)redhat.com, bderzhavets(a)yahoo.com, "Xen users" <james.harper(a)bendigoit.com.au>, "Fedora Xen" <fedora-xen(a)redhat.com> > Date: Monday, 26 October, 2009, 5:58 PM > > On 10/26/2009 06:48 AM, Fasiha Ashraf wrote: >> Hi all >> I am facing this error while installing Guest VM on FC11 using virt-manager >> Unable to complete install '<class 'libvirt.libvirtError'> Domain not found: xenUnifiedDomainLookupByName >> Traceback (most recent call last): >> File "/usr/share/virt-manager/virtManager/create.py", line 1575, in do_install >> dom = guest.start_install(False, meter = meter) >> File "/usr/lib/python2.6/site-packages/virtinst/Guest.py", line 628, in start_install >> return self._do_install(consolecb, meter, removeOld, wait) >> File "/usr/lib/python2.6/site-packages/virtinst/Guest.py", line 726, in _do_install >> self.domain = self.conn.createLinux(install_xml, 0) >> File "/usr/lib64/python2.6/site-packages/libvirt.py", line 1077, in createLinux >> if ret is >> None:raise libvirtError('virDomainCreateLinux() failed', conn=self) >> libvirtError: Domain not found: xenUnifiedDomainLookupByName >> ' >> What should i do to avoid it? please help! >> Boris! How did you create PV guests using virt-manager i am following your article >> http://bderzhavets.wordpress.com/2009/08/20/setup-libvirt-0-7-0-6-xen-3-4-1- dom0-on-to-fedora-11-64-bit/#comment-623 >> PFA, a screen-shot of the virt-manager >> >> Regards, >> Fasiha Ashraf >> > > CCing fedora-xen list. > > Rather than a screenshot, can you include: > > ~/.virt-manager/virt-manager.log > virsh --connect xen:/// capabilities > virsh --connect xen:/// version > > Thanks, > Cole _____ Yahoo! India has a new look. Take a sneak peek <http://in.rd.yahoo.com/tagline_metro_2/*http:/in.yahoo.com/trynew> .

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Rebuilding M. young' xendom0 kernel source rpm on fedora 10
by 서지혜 06 Nov '09

06 Nov '09

Can I rebuild M. young's kernel-2.6.31.4-1.2.73.xendom0.fc12.src.rpm<http://myoung.fedorapeople.org/dom0/src/kernel-2.6.31.4-1.2.73.xendom0.fc12…> on fedora10 64bit host and run with current xen 3.4.1 ?

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problems with F11 domU on a centos 5 host
by Eric Doutreleau 03 Nov '09

03 Nov '09

hi i m trying to use a F11 xen guest on a centos 5 machine. the guest is fully virtualized and from time to time i found my guest completely unresponsive. it eating all his cpu and the only way i found to get it back is to shutdown it. Has anybody already seen that kind of problem? on the host i have xen-3.0.3-80. Thanks in advance for any help

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xen November 2009