xen February 2008

xen@lists.fedoraproject.org

30 participants
21 discussions

Custom bridge script; upgrade from Fedora 6 to Fedora 8
by Ask Bjørn Hansen 07 May '08

07 May '08

Hi, Since upgrading from Fedora 6 to Fedora 8 my custom bridge script stopped working. I need to have both eth0 and eth1 bridged into each XM. My xen machines are just defined in old-style /etc/xen/foo configuration files, like vif = [ 'mac=00:16:3e:42:08:1d, bridge=xenbr0', 'mac=00:16:3e: 42:08:1e, bridge=xenbr1' ] I've changed that to vif = [ 'mac=00:16:3e:42:08:1d, bridge=eth0', 'mac=00:16:3e:42:08:1e, bridge=eth1' ] but when I do a "xm create foo" I still end up with the new interfaces on the wrong bridge! # brctl show bridge name bridge id STP enabled interfaces eth0 8000.0030488c8a26 no peth0 eth1 8000.0030488c8a27 no peth1 xenbr0 8000.feffffffffff no vif1.0 xenbr1 8000.feffffffffff no vif1.1 If I manually move the vifX.X interfaces to the eth0/eth1 bridges then everything works. This is my custom bridge script: #!/bin/sh dir=$(dirname "$0") "$dir/network-bridge" "$@" netdev=eth1 bridge=eth1 "$dir/network-bridge" "$@" netdev=eth0 bridge=eth0 Any ideas? - ask -- http://develooper.com/ - http://askask.com/

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domU auto start order
by Ranbir 05 Mar '08

05 Mar '08

Hi All, Is it possible to auto start domU's listed in /etc/xen/auto in a particular order? I imagine it is, but my reading comprehension or my searching skills suck, because I can't find anything about this. Thanks, Ranbir -- Kanwar Ranbir Sandhu Linux 2.6.22.14-72.fc6 i686 GNU/Linux 21:12:35 up 1 day, 51 min, 2 users, load average: 1.69, 0.73, 0.49

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no guest configuration file in /etc/xen
by Akl Spec 04 Mar '08

04 Mar '08

Hi All, I am newbie to Xen. I installed xen-3.1.0-13.fc8 on fc8 and configured two fedora guest domains, one with virt-manager and the other with virt-installer. Both the virtual servers are up and i can boot them successfully, but both the installation didn't create the guest configuration file in /etc/xen directory(docs says configuration file will be created here). Can anybody please help me to find out those files?? Thanks in advance. AKL --------------------------------- Looking for last minute shopping deals? Find them fast with Yahoo! Search.

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VCL for xen?
by Yonas Abraham 04 Mar '08

04 Mar '08

Hi, I am looking for open source application that does similar to NC states Virtual Computing Library (VCL) for xen management. I have seen ovirt.org, but it seems to require hardware virtualization, which I don't have. any pointers will be appreciated. /yonas

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Prebuilt images for non-Fedora DomU's?
by Evan Lavelle 29 Feb '08

29 Feb '08

I've just had a go at installing the Debian 4.0 jailtime image on a Fedora 8 Dom0, but had no luck. I've just posted on the xen list about this, but the summary is that the debian image has an empty /boot directory, the jailtime config file doesn't use pygrub, and the config file expects to find "/boot/vmlinuz-2.6-xen" on the Dom0, which of course I haven't got on Fedora 8. Has anyone had any luck installing prebuilt "foreign" distributions on Fedora 8, or do you all roll your own DomU's? If you have found any usable images, can you give me a URL? I'm looking for Debian 4.0 or Centos 5.0 or, failing that, Ubuntu 6.0.6 or Gentoo 2006.1. I haven't tried virt-install because the FC7 docs say "With Fedora 7, installation of Fedora 7 guests using anaconda is supported". Presumably this means that it doesn't work for non-Fedora DomU's? Thanks - Evan

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How to re-reading the xen guest config file
by Terry Gotzon 28 Feb '08

28 Feb '08

What I am trying to do is add additional memory or CPU's to a running xen guest that is already at the maximum allocated from build time. Currently, I edit the config file for the guest and increase the memory or cpu and then shutdown and start the VM. What I would like to do is re-read the config file without having to restart the server. Does anyone know of a way to do this, if possible? Thanks Terry

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rawhide guests on F-8 host
by Orion Poplawski 25 Feb '08

25 Feb '08

I just build a F-8 x86_64 guest on a F-8 x86_64 host, then did a yum upgrade to rawhide. Now the domain will not start. Is this expected? [2008-02-21 14:47:07 2774] DEBUG (XendBootloader:100) Launching bootloader as ['/usr/bin/pygrub', '--output=/var/run/xend/boot/xenbl.23509', '/export/data1/xen_disk_fdev_x86_64']. [2008-02-21 14:47:12 2103] DEBUG (XendDomainInfo:1640) _initDomain:shadow_memory=0x0, memory_static_max=0x20000000, memory_static_min=0x0. [2008-02-21 14:47:12 2103] DEBUG (balloon:116) Balloon: 528696 KiB free; need 524288; done. [2008-02-21 14:47:12 2103] INFO (image:129) buildDomain os=linux dom=2 vcpus=2 [2008-02-21 14:47:12 2103] DEBUG (image:198) domid = 2 [2008-02-21 14:47:12 2103] DEBUG (image:199) memsize = 512 [2008-02-21 14:47:12 2103] DEBUG (image:200) image = /var/run/xend/boot/boot_kernel.vlVqWs [2008-02-21 14:47:12 2103] DEBUG (image:201) store_evtchn = 1 [2008-02-21 14:47:12 2103] DEBUG (image:202) console_evtchn = 2 [2008-02-21 14:47:12 2103] DEBUG (image:203) cmdline = ro root=LABEL=/ console=xvc0 [2008-02-21 14:47:12 2103] DEBUG (image:204) ramdisk = /var/run/xend/boot/boot_ramdisk.WvuY8R [2008-02-21 14:47:12 2103] DEBUG (image:205) vcpus = 2 [2008-02-21 14:47:12 2103] DEBUG (image:206) features = [2008-02-21 14:47:12 2103] INFO (XendDomainInfo:1458) createDevice: console : {'devid': 0, 'protocol': 'vt100', 'location': '2', 'uuid': '8ee7025a-6ed3-ba11-1f3d-589420bd567b'} [2008-02-21 14:47:12 2103] DEBUG (DevController:117) DevController: writing {'protocol': 'x86_64-abi', 'state': '1', 'backend-id': '0', 'backend': '/local/domain/0/backend/console/2/0'} to /local/domain/2/device/console/0. [2008-02-21 14:47:12 2103] DEBUG (DevController:119) DevController: writing {'domain': 'xenfdev', 'protocol': 'vt100', 'uuid': '8ee7025a-6ed3-ba11-1f3d-589420bd567b', 'frontend': '/local/domain/2/device/console/0', 'state': '1', 'location': '2', 'online': '1', 'frontend-id': '2'} to /local/domain/0/backend/console/2/0. [2008-02-21 14:47:12 2103] INFO (XendDomainInfo:1458) createDevice: vbd : {'uuid': 'a4f5058f-f598-0c07-9bff-9a930b73c629', 'bootable': 1, 'devid': 51712, 'driver': 'paravirtualised', 'dev': 'xvda:disk', 'uname': 'file:/export/data1/xen_disk_fdev_x86_64', 'mode': 'w', 'backend': '0'} [2008-02-21 14:47:12 2103] DEBUG (DevController:117) DevController: writing {'virtual-device': '51712', 'device-type': 'disk', 'protocol': 'x86_64-abi', 'backend-id': '0', 'state': '1', 'backend': '/local/domain/0/backend/vbd/2/51712'} to /local/domain/2/device/vbd/51712. [2008-02-21 14:47:12 2103] DEBUG (DevController:119) DevController: writing {'domain': 'xenfdev', 'frontend': '/local/domain/2/device/vbd/51712', 'uuid': 'a4f5058f-f598-0c07-9bff-9a930b73c629', 'dev': 'xvda', 'state': '1', 'params': '/export/data1/xen_disk_fdev_x86_64', 'mode': 'w', 'online': '1', 'frontend-id': '2', 'type': 'file'} to /local/domain/0/backend/vbd/2/51712. [2008-02-21 14:47:12 2103] INFO (XendDomainInfo:1458) createDevice: vif : {'bridge': 'eth0', 'uuid': '8c47fd72-2fe1-da66-236c-59f501b5c465', 'script': 'vif-bridge', 'devid': 0, 'mac': '40:00:00:00:00:01', 'backend': '0'} [2008-02-21 14:47:12 2103] DEBUG (DevController:117) DevController: writing {'mac': '40:00:00:00:00:01', 'handle': '0', 'protocol': 'x86_64-abi', 'backend-id': '0', 'state': '1', 'backend': '/local/domain/0/backend/vif/2/0'} to /local/domain/2/device/vif/0. [2008-02-21 14:47:12 2103] DEBUG (DevController:119) DevController: writing {'bridge': 'eth0', 'domain': 'xenfdev', 'handle': '0', 'uuid': '8c47fd72-2fe1-da66-236c-59f501b5c465', 'script': '/etc/xen/scripts/vif-bridge', 'state': '1', 'frontend': '/local/domain/2/device/vif/0', 'mac': '40:00:00:00:00:01', 'online': '1', 'frontend-id': '2'} to /local/domain/0/backend/vif/2/0. [2008-02-21 14:47:13 2103] DEBUG (XendDomainInfo:2116) Storing VM details: {'on_xend_stop': 'ignore', 'shadow_memory': '0', 'uuid': '75d3d53b-8a9c-d5bd-cdc4-207b894c6ac6', 'on_reboot': 'restart', 'start_time': '1203630433.0', 'on_poweroff': 'destroy', 'on_xend_start': 'ignore', 'on_crash': 'restart', 'vcpus': '2', 'vcpu_avail': '3', 'image': "(linux (kernel ) (notes (FEATURES 'writable_page_tables|writable_descriptor_tables|auto_translated_physmap|pae_pgdir_above_4gb|supervisor_mode_kernel') (VIRT_BASE 18446744071562067968) (GUEST_VERSION 2.6) (PADDR_OFFSET 18446744071562067968) (GUEST_OS linux) (HYPERCALL_PAGE 18446744071564189696) (LOADER generic) (SUSPEND_CANCEL 1) (ENTRY 18446744071564165120) (XEN_VERSION xen-3.0)))", 'name': 'xenfdev'} [2008-02-21 14:47:13 2103] DEBUG (XendDomainInfo:956) Storing domain details: {'console/ring-ref': '196480', 'image/entry': '18446744071564165120', 'console/port': '2', 'store/ring-ref': '196481', 'image/loader': 'generic', 'vm': '/vm/75d3d53b-8a9c-d5bd-cdc4-207b894c6ac6', 'control/platform-feature-multiprocessor-suspend': '1', 'image/guest-os': 'linux', 'cpu/1/availability': 'online', 'image/features/writable-descriptor-tables': '1', 'image/virt-base': '18446744071562067968', 'memory/target': '524288', 'image/guest-version': '2.6', 'image/features/supervisor-mode-kernel': '1', 'console/limit': '1048576', 'image/paddr-offset': '18446744071562067968', 'image/hypercall-page': '18446744071564189696', 'image/suspend-cancel': '1', 'cpu/0/availability': 'online', 'image/features/pae-pgdir-above-4gb': '1', 'image/features/writable-page-tables': '1', 'image/features/auto-translated-physmap': '1', 'name': 'xenfdev', 'domid': '2', 'image/xen-version': 'xen-3.0', 'store/port': '1'} [2008-02-21 14:47:13 2103] DEBUG (XendDomainInfo:1040) XendDomainInfo.handleShutdownWatch [2008-02-21 14:47:13 2103] WARNING (XendDomainInfo:1203) Domain has crashed: name=xenfdev id=2. [2008-02-21 14:47:13 2103] ERROR (XendDomainInfo:1333) VM xenfdev restarting too fast (6.067748 seconds since the last restart). Refusing to restart to avoid loops. -- Orion Poplawski Technical Manager 303-415-9701 x222 NWRA/CoRA Division FAX: 303-415-9702 3380 Mitchell Lane orion(a)cora.nwra.com Boulder, CO 80301 http://www.cora.nwra.com

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failure to retrieve ministrg2.img in guest boot
by Kenneth Nagin 25 Feb '08

25 Feb '08

I successful created a XEN guest in fedora 8. However, the guest will not boot. The failure occurs shortly after setting up the IP network settings. The error message claims that it can not retrieve ministg2.img. "failure to retrieve http://download.fedora.redhat.com //pub/fedora/linux/releases/8/Fedora/i386/os/ministrg2.img." Notice that the error message reads "//pub". However, the my input for the path had only one forward slash.. Of course, I could not have gotten this far in the install with a faulty path. In xend-debug.log read: File "/usr/lib/python2.5/site-packages/xen/xend/XendDomain.py", line 524, in domain_lookup raise XendInvalidDomain(str(domid)) XendInvalidDomain: <Fault 3: 'system3'> Thanks in advance for any help on how to resolve this issue.. Kenneth Nagin

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domU stops at --> EXT3 FS on sda1, internal journal
by Naveen R 23 Feb '08

23 Feb '08

Hello everyone, i am using fedora 7 and tried to run the xen images available at jailtime.org site and was able to start the os but it stops after the following log and will not proceed any further. The state in virt-manager shows its running but the console stops after the following. Can anyone tell me whats the problem. Thanks in advance. Using config file "/xen/debian.4-0/debian.4-0.xen3.cfg". Started domain debian.4-0 Linux version 2.6.20-2925.9.fc7xen ( kojibuilder(a)xenbuilder4.fedora.phx.redhat.com) (gcc version 4.1.2 20070502 (Red Hat 4.1.2-12)) #1 SMP Tue May 22 08:53:03 EDT 2007 BIOS-provided physical RAM map: sanitize start sanitize bail 0 copy_e820_map() start: 0000000000000000 size: 000000000bc00000 end: 000000000bc00000 type: 1 Xen: 0000000000000000 - 000000000bc00000 (usable) 0MB HIGHMEM available. 188MB LOWMEM available. NX (Execute Disable) protection: active Zone PFN ranges: DMA 0 -> 48128 Normal 48128 -> 48128 HighMem 48128 -> 48128 early_node_map[1] active PFN ranges 0: 0 -> 48128 ACPI in unprivileged domain disabled Built 1 zonelists. Total pages: 47752 Kernel command line: root=/dev/sda1 ro ip=:1.2.3.4::::eth0:dhcp Enabling fast FPU save and restore... done. Enabling unmasked SIMD FPU exception support... done. Initializing CPU#0 CPU 0 irqstacks, hard=c135f000 soft=c133f000 PID hash table entries: 1024 (order: 10, 4096 bytes) Xen reported: 1804.083 MHz processor. Console: colour dummy device 80x25 Lock dependency validator: Copyright (c) 2006 Red Hat, Inc., Ingo Molnar ... MAX_LOCKDEP_SUBCLASSES: 8 ... MAX_LOCK_DEPTH: 30 ... MAX_LOCKDEP_KEYS: 2048 ... CLASSHASH_SIZE: 1024 ... MAX_LOCKDEP_ENTRIES: 8192 ... MAX_LOCKDEP_CHAINS: 16384 ... CHAINHASH_SIZE: 8192 memory used by lock dependency info: 1064 kB per task-struct memory footprint: 1200 bytes Dentry cache hash table entries: 32768 (order: 5, 131072 bytes) Inode-cache hash table entries: 16384 (order: 4, 65536 bytes) Software IO TLB disabled vmalloc area: cc800000-f4ffe000, maxmem 2d7fe000 Memory: 168448k/192512k available (2030k kernel code, 15688k reserved, 1079k data, 180k init, 0k highmem) virtual kernel memory layout: fixmap : 0xf5315000 - 0xf57fe000 (5028 kB) pkmap : 0xf5000000 - 0xf5200000 (2048 kB) vmalloc : 0xcc800000 - 0xf4ffe000 ( 647 MB) lowmem : 0xc0000000 - 0xcbc00000 ( 188 MB) .init : 0xc130e000 - 0xc133b000 ( 180 kB) .data : 0xc11fb8b9 - 0xc1309714 (1079 kB) .text : 0xc1000000 - 0xc11fb8b9 (2030 kB) Checking if this processor honours the WP bit even in supervisor mode... Ok. Calibrating delay using timer specific routine.. 4512.90 BogoMIPS (lpj=9025800) Security Framework v1.0.0 initialized SELinux: Initializing. SELinux: Starting in permissive mode selinux_register_security: Registering secondary module capability Capability LSM initialized as secondary Mount-cache hash table entries: 512 CPU: L1 I Cache: 64K (64 bytes/line), D cache 64K (64 bytes/line) CPU: L2 Cache: 512K (64 bytes/line) Checking 'hlt' instruction... OK. SMP alternatives: switching to UP code Freeing SMP alternatives: 11k freed Brought up 1 CPUs Grant table initialized NET: Registered protocol family 16 Brought up 1 CPUs PCI: Fatal: No config space access function found PCI: setting up Xen PCI frontend stub Setting up standard PCI resources BUG: at kernel/fork.c:994 copy_process() [<c1005d9e>] show_trace_log_lvl+0x1a/0x2f [<c1006347>] show_trace+0x12/0x14 [<c10063c2>] dump_stack+0x16/0x18 [<c101d040>] copy_process+0x195/0x1245 [<c101e140>] do_fork+0x50/0x117 [<c1003351>] kernel_thread+0x8e/0x96 [<c102c6fd>] __call_usermodehelper+0x2d/0x46 [<c102cd4b>] run_workqueue+0x89/0x145 [<c102d70d>] worker_thread+0xd5/0x102 [<c102ff23>] kthread+0xb3/0xdc [<c10058df>] kernel_thread_helper+0x7/0x10 ======================= ACPI: Interpreter disabled. Linux Plug and Play Support v0.97 (c) Adam Belay pnp: PnP ACPI: disabled xen_mem: Initialising balloon driver. usbcore: registered new interface driver usbfs usbcore: registered new interface driver hub usbcore: registered new device driver usb PCI: System does not support PCI PCI: System does not support PCI NetLabel: Initializing NetLabel: domain hash size = 128 NetLabel: protocols = UNLABELED CIPSOv4 NetLabel: unlabeled traffic allowed by default NET: Registered protocol family 2 IP route cache hash table entries: 2048 (order: 1, 8192 bytes) TCP established hash table entries: 8192 (order: 6, 262144 bytes) TCP bind hash table entries: 4096 (order: 5, 131072 bytes) TCP: Hash tables configured (established 8192 bind 4096) TCP reno registered checking if image is initramfs... it is Freeing initrd memory: 7272k freed IA-32 Microcode Update Driver: v1.14-xen <tigran(a)veritas.com> audit: initializing netlink socket (disabled) audit(1202740570.370:1): initialized VFS: Disk quotas dquot_6.5.1 Dquot-cache hash table entries: 1024 (order 0, 4096 bytes) SELinux: Registering netfilter hooks io scheduler noop registered io scheduler anticipatory registered io scheduler deadline registered io scheduler cfq registered (default) pci_hotplug: PCI Hot Plug PCI Core version: 0.5 rtc: IRQ 8 is not free. Non-volatile memory driver v1.2 Linux agpgart interface v0.101 (c) Dave Jones RAMDISK driver initialized: 16 RAM disks of 16384K size 4096 blocksize input: Macintosh mouse button emulation as /class/input/input0 Xen virtual console successfully installed as xvc0 Event-channel device installed. usbcore: registered new interface driver libusual usbcore: registered new interface driver hiddev usbcore: registered new interface driver usbhid drivers/usb/input/hid-core.c: v2.6:USB HID core driver PNP: No PS/2 controller found. Probing ports directly. i8042.c: No controller found. mice: PS/2 mouse device common for all mice TCP bic registered Initializing XFRM netlink socket NET: Registered protocol family 1 NET: Registered protocol family 17 Using IPI No-Shortcut mode XENBUS: Device with no driver: device/vbd/2049 XENBUS: Device with no driver: device/vbd/2050 Freeing unused kernel memory: 180k freed Write protecting the kernel read-only data: 762k Registering block device major 8 blkfront: sda1: barriers enabled blkfront: sda2: barriers enabled USB Universal Host Controller Interface driver v3.0 ohci_hcd: 2006 August 04 USB 1.1 'Open' Host Controller (OHCI) Driver SCSI subsystem initialized register_blkdev: cannot get major 8 for sd libata version 2.00 loaded. netfront: Initialising virtual ethernet driver. kjournald starting. Commit interval 5 seconds EXT3-fs: mounted filesystem with ordered data mode. Adding 65528k swap on /dev/sda2. Priority:-1 extents:1 across:65528k EXT3 FS on sda1, internal journal

2 3

DVD not mountable on FC8 DomU?
by Evan Lavelle 15 Feb '08

15 Feb '08

I have an FC8 Dom0 which has identical setups for a Centos 5 and an FC8 DomU (both HVM). However, I can't mount a (file) DVD on the FC8 DomU, but I can do this on the Centos 5 (and various other) DomU's. The FC8 config file contains: disk = [ 'phy:/dev/VG_Guests/FC8-64-001,ioemu:hda,w' , 'file:/dumps/ISO/FC8-64/FC8-64.ISO,hdc:cdrom,r'] The Centos config file is identical, except that the 'FC8' strings are changed. FC8 installed Ok using this cdrom line, and it also boots up from this "DVD" if I change the boot order in the config file. The FC8 DomU /etc/fstab contains: /dev/sr0 /media/dvd auto pamconsole,fscontext=system_u:object_r:removable_t,exec,noauto,managed 0 0 This line is identical for the FC8 Dom0, the Centos 5 DomU, and the FC8 DomU, except that Centos 5 uses /dev/hdc instead of /dev/sr0. Any ideas why I can't mount the DVD on the FC8 DomU? mount reports that the filesystem is read-only, so it's getting some of the way there, but it then complains that the options are wrong: > mount: block device /dev/sr0 is write-protected, mounting read-only > mount: wrong fs type, bad option, bad superblock on /dev/sr0, > missing codepage or helper program, or other error I've tried various different options and filesystems without luck. The DVD disk file itself is Ok, because I can still boot up from it. One other thing I tried was changing the cdrom line in the config file to 'file:/dumps/ISO/FC8-64/FC8-64.ISO,sr0:cdrom,r' but this doesn't help - after booting, the FC8 DomU doesn't have a DVD at all in /dev; the /dev/sr0 and /dev/cdrom entries have disappeared. Thanks - Evan

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xen February 2008