xen April 2011

xen@lists.fedoraproject.org

7 participants
11 discussions

execute commands from dom0 into domU
by silviu d 06 Jun '15

06 Jun '15

Hello, I was wondering if there is a way to execute commands from dom0 into domU without loging into domU with ssh. thanks

3 2

2.6.32 dom0 kernel
by M A Young 18 May '11

18 May '11

I have built a new 2.6.32 kernel, based on my Fedora 12 kernels, but with updates to the latest 2.6.32 kernel patch (2.6.32.34 with the extra patch to make it equivalent to 2.6.32.35) and latest xen next-2.6.32 patch. It was built on Fedora 13. It is available (temporarily) from koji at http://koji.fedoraproject.org/koji/taskinfo?taskID=2940510 and from my repository http://repos.fedorapeople.org/repos/myoung/dom0-kernel/ Michael Young

3 3

2.6.32.x dom0 kernel
by M A Young 28 Apr '11

28 Apr '11

I have built another 2.6.32.x based kernel (2.6.32.25-172.xendom0.fc12) at http://koji.fedoraproject.org/koji/taskinfo?taskID=2583536 and the repository http://repos.fedorapeople.org/repos/myoung/dom0-kernel/ . This updates the kernel from 2.6.32.25-rc1 to 2.6.32.25 (which may not actually change anything), and uses a later version of xen/stable-2.6.3.32.x which adds a couple of xen fixes. Michael Young

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Re: [Fedora-xen] kernel-2.6.38-1.xendom0.fc15.x86_64 & Xen 4.1.0
by Steven Haigh 16 Apr '11

16 Apr '11

On 16/04/2011 11:00 PM, M A Young wrote: > > > On Sat, 16 Apr 2011, Steven Haigh wrote: > >> Hi all, >> >> I've rebuilt my xen server to Fedora 15 Beta which has Xen 4.1.0. >> >> I've copied the config files from a working Fedora 14 & Xen 4.0.1 xen >> server, however it seems that the guests refuse to start. >> >> My config file is as follows: >> memory = 512 >> name = "zeus.vm" >> vcpus = 2 >> disk = [ 'phy:/dev/RAID1/zeus.vm,xvda,w', >> 'phy:/dev/RAID5/fileshare,xvdb,w' ] > > Try file: instead of phy: and xl rather than xm. I think that kernel has > kernel block back support in theory but I am not sure it works. I think I managed to track down the problem! Replacing the kernel & initrd lines in the config file with: bootloader = '/usr/bin/pygrub' The domains seem to function without issue now. I still seem to have problems starting hvm DomUs with Windows as the guest OS. My guess is that something seems to be wrong with pv-grub_x86_64.gz and possible hvmloader? Has anyone managed to overcome, confirm or suggest a workaround for this? -- Steven Haigh Email: netwiz(a)crc.id.au Web: http://www.crc.id.au Phone: (03) 9001 6090 - 0412 935 897 Fax: (03) 8338 0299 There are no great men, only great challenges that ordinary men are forced by circumstances to meet. -- Admiral William Halsey

1 0

kernel-2.6.38-1.xendom0.fc15.x86_64 & Xen 4.1.0
by Steven Haigh 16 Apr '11

16 Apr '11

Hi all, I've rebuilt my xen server to Fedora 15 Beta which has Xen 4.1.0. I've copied the config files from a working Fedora 14 & Xen 4.0.1 xen server, however it seems that the guests refuse to start. My config file is as follows: memory = 512 name = "zeus.vm" vcpus = 2 disk = [ 'phy:/dev/RAID1/zeus.vm,xvda,w', 'phy:/dev/RAID5/fileshare,xvdb,w' ] on_poweroff = 'destroy' on_reboot = 'restart' on_crash = 'restart' vif = [ "mac=02:16:36:35:35:09,bridge=br203,script=vif-bridge" ] kernel="/usr/lib/xen/boot/pv-grub-x86_64.gz" extra="(hd0)/boot/grub/grub.conf" The only real message I can find says something about the kernel not being a valid bzImage? Is Fedora 15 + kernel-2.6.38-1.xendom0.fc15.x86_64.rpm a known working configuration? Has the config changed between 4.0.1 and 4.1.0? -- Steven Haigh Email: netwiz(a)crc.id.au Web: http://www.crc.id.au Phone: (03) 9001 6090 - 0412 935 897 Fax: (03) 8338 0299 There are no great men, only great challenges that ordinary men are forced by circumstances to meet. -- Admiral William Halsey

1 0

/sys/class/net/xenbr5/bridge: No such file or directory
by Jon R. 13 Apr '11

13 Apr '11

I followed Pasi's setup at http://wiki.xensource.com/xenwiki/RHEL6Xen4Tutorial to configure and a SL6 box. This all worked great and I have a working system. When I look at my bridge with 'brctl show' I am seeing this as the output: brctl show bridge name bridge id STP enabled interfaces xenbr5 /sys/class/net/xenbr5/bridge: No such file or directory /sys/class/net/xenbr5/bridge: No such file or directory /sys/class/net/xenbr5/bridge: No such file or directory /sys/class/net/xenbr5/bridge: No such file or directory /sys/class/net/xenbr5/bridge: No such file or directory /sys/class/net/xenbr5/bridge: No such file or directory /sys/class/net/xenbr5/bridge: No such file or directory /sys/class/net/xenbr5/bridge: No such file or directory /sys/class/net/xenbr5/bridge: No such file or directory /sys/class/net/xenbr5/bridge: No such file or directory /sys/class/net/xenbr5/bridge: No such file or directory /sys/class/net/xenbr5/bridge: No such file or directory 8000.001125a5ce44 no bond0.5 The files are in the system as 'ls -l' shows: ls -l /sys/class/net/xenbr5/bridge/ total 0 -rw-r--r-- 1 root root 4096 Apr 3 11:23 ageing_time -r--r--r-- 1 root root 4096 Apr 3 11:23 bridge_id --w------- 1 root root 4096 Apr 3 11:29 flush -rw-r--r-- 1 root root 4096 Apr 3 11:23 forward_delay -r--r--r-- 1 root root 4096 Apr 3 11:23 gc_timer -rw-r--r-- 1 root root 4096 Apr 3 11:29 group_addr -rw-r--r-- 1 root root 4096 Apr 3 11:23 hello_time -r--r--r-- 1 root root 4096 Apr 3 11:23 hello_timer -rw-r--r-- 1 root root 4096 Apr 3 11:23 max_age -rw-r--r-- 1 root root 4096 Apr 3 11:29 priority -r--r--r-- 1 root root 4096 Apr 3 11:23 root_id -r--r--r-- 1 root root 4096 Apr 3 11:23 root_path_cost -r--r--r-- 1 root root 4096 Apr 3 11:23 root_port -rw-r--r-- 1 root root 4096 Apr 3 11:23 stp_state -r--r--r-- 1 root root 4096 Apr 3 11:23 tcn_timer -r--r--r-- 1 root root 4096 Apr 3 11:23 topology_change -r--r--r-- 1 root root 4096 Apr 3 11:23 topology_change_detected -r--r--r-- 1 root root 4096 Apr 3 11:23 topology_change_timer I am bonding my interface eth0 and eth1 and assinging the bridge to the bond, here are my ifcfg scripts: # Intel Corporation 82546GB Gigabit Ethernet Controller DEVICE=eth0 HWADDR=00:11:25:a5:ce:44 BOOTPROTO=none ONBOOT=yes MASTER=bond0 SLAVE=yes ISALIAS=no MTU=9000 NM_CONTROLLED=no # Intel Corporation 82546GB Gigabit Ethernet Controller DEVICE=eth1 HWADDR=00:11:25:a5:ce:45 BOOTPROTO=none ONBOOT=yes MASTER=bond0 SLAVE=yes ISALIAS=no MTU=9000 NM_CONTROLLED=no DEVICE=bond0 BOOTPROTO=none BONDING_OPTS="mode=1 miimon=100" ONBOOT=yes MTU=9000 NM_CONTROLLED=no DEVICE=bond0.5 BOOTPROTO=none ONBOOT=yes VLAN=yes BRIDGE=xenbr5 TYPE=Ethernet MTU=9000 NM_CONTROLLED=no DEVICE=xenbr5 BOOTPROTO=static IPADDR=192.168.6.2 NETMASK=255.255.255.0 BROADCAST=192.168.6.255 ONBOOT=yes TYPE=Bridge MTU=9000 NM_CONTROLLED=no I read through this post, http://permalink.gmane.org/gmane.comp.emulators.xen.devel/98821, and it never did give an answer to what may be causing this. Is this something that can be ignored? Thanks for any help, Jon

2 3

Xen 4.0.2 rc3 available to test
by M A Young 13 Apr '11

13 Apr '11

I have done a test build of the latest xen 4.0.2 release candidate at http://koji.fedoraproject.org/koji/taskinfo?taskID=2998474 . I intend to update xen to 4.0.2 on F14 once it is released. Michael Young

1 0

OProfile and Xen
by W. Michael Petullo 06 Apr '11

06 Apr '11

Is anyone using OProfile with Xen? I am especially interested in the passive profiling of Xen DomU domains. I've attached a Xen patch against the Fedora oprofile package to a report in Bugzilla, #693596. But, even with this patch I am getting mixed results. See also http://www.xen.org/files/summit_3/xenoprof_tutorial.pdf. -- Mike :wq

1 1

Xen Dom0 feature pushed to Fedora 16
by W. Michael Petullo 05 Apr '11

05 Apr '11

The Xen Dom0 feature described at http://fedoraproject.org/wiki/Features/XenPvopsDom0 has been pushed to Fedora 16. I don't think this should come as a surprise. A lot of people are working hard on the kernel components, but they did not make the Fedora 15 timeline. -- Mike :wq

2 1

test 2.6.38 dom0 kernel
by M A Young 04 Apr '11

04 Apr '11

I have done an experimental kernel, which is a standard F15 2.6.38 kernel plus the two packages needed to get the xen net backend working. In my testing on an F15 host I could get a guest to boot from a text boot, though X crashed. The build is at http://koji.fedoraproject.org/koji/taskinfo?taskID=2968665 if anyone else wants to test it. Michael Young

2 1

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xen April 2011