August 2007 - Devel - libvirt List Archives

[Libvir] Hang with virt-install graphic=no on FC 6 6.93/F7 RC2
by libvirtuser 23 Dec '25

23 Dec '25

I had this problem and another user confirmed the same behavior on his machine: http://pastie.caboo.se/65417 Haven't tried it with *2925.10* yet. Also, is there a way to get more verbose info about what calls are causing the "configuration file syntax error" errors? Thanks. virt-install How large would you like the disk () to be (in gigabytes)? 4 ERROR: Must provide a file, not a directory for the disk What would you like to use as the disk (path)? /xen/images/x6.img Would you like to enable graphics support? (yes or no) no What is the install location? http://mirror.anl.gov/pub/fedora-linux-core/test/6.93/Fedora/i386/os/ Starting install... libvir: Xen Daemon error : GET operation failed: libvir: error : configuration file syntax error: expecting a name libvir: error : configuration file syntax error: expecting a name libvir: error : configuration file syntax error: expecting a name Retrieving Fedora... 276 kB 00:01 Retrieving vmlinuz... 100% |=========================| 2.1 MB 00:16 Retrieving initrd.img... 100% |=========================| 5.4 MB 00:28 libvir: Xen Daemon error : GET operation failed: libvir: error : configuration file syntax error: expecting a name libvir: error : configuration file syntax error: expecting a name libvir: error : configuration file syntax error: expecting a name Creating domain... 0 B 00:06 Linux version 2.6.20-2925.5.fc7xen (brewbuilder(a)ls20-bc1-14.build.redhat.com) (gcc version 4.1.2 20070317 (Red Hat 4.1.2-5)) #1 SMP Thu Mar 22 13:51:38 EDT 2007 BIOS-provided physical RAM map: sanitize start sanitize bail 0 copy_e820_map() start: 0000000000000000 size: 0000000020800000 end: 0000000020800000 type: 1 Xen: 0000000000000000 - 0000000020800000 (usable) 0MB HIGHMEM available. 520MB LOWMEM available. Using x86 segment limits to approximate NX protection Zone PFN ranges: DMA 0 -> 133120 Normal 133120 -> 133120 HighMem 133120 -> 133120 early_node_map[1] active PFN ranges 0: 0 -> 133120 ACPI in unprivileged domain disabled Built 1 zonelists. Total pages: 132080 Kernel command line: method=http://mirror.anl.gov/pub/fedora-linux-core/test/6.93/Fedora/i386/os/ 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: 4096 (order: 12, 16384 bytes) Xen reported: 1694.994 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: 131072 (order: 7, 524288 bytes) Inode-cache hash table entries: 65536 (order: 6, 262144 bytes) Software IO TLB disabled vmalloc area: e1000000-f4ffe000, maxmem 2d7fe000 Memory: 503936k/532480k available (2030k kernel code, 19948k reserved, 1079k data, 180k init, 0k highmem) virtual kernel memory layout: fixmap : 0xf5315000 - 0xf57fe000 (5028 kB) pkmap : 0xf5000000 - 0xf5200000 (2048 kB) vmalloc : 0xe1000000 - 0xf4ffe000 ( 319 MB) lowmem : 0xc0000000 - 0xe0800000 ( 520 MB) .init : 0xc130e000 - 0xc133b000 ( 180 kB) .data : 0xc11fb9d9 - 0xc1309714 (1079 kB) .text : 0xc1000000 - 0xc11fb9d9 (2030 kB) Checking if this processor honours the WP bit even in supervisor mode... Ok. Calibrating delay using timer specific routine.. 4262.67 BogoMIPS (lpj=8525343) 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: Trace cache: 12K uops, L1 D cache: 8K CPU: L2 cache: 256K 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 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: 32768 (order: 5, 131072 bytes) TCP established hash table entries: 131072 (order: 10, 4194304 bytes) TCP bind hash table entries: 65536 (order: 9, 2097152 bytes) TCP: Hash tables configured (established 131072 bind 65536) TCP reno registered checking if image is initramfs... it is Freeing initrd memory: 7256k freed IA-32 Microcode Update Driver: v1.14-xen <tigran(a)veritas.com> audit: initializing netlink socket (disabled) audit(1180379657.981:1): 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 BUG: at kernel/fork.c:994 copy_process() [<c1005d9a>] show_trace_log_lvl+0x1a/0x2f [<c1006343>] show_trace+0x12/0x14 [<c10063be>] dump_stack+0x16/0x18 [<c101d044>] copy_process+0x195/0x1245 [<c101e144>] do_fork+0x50/0x117 [<c1003351>] kernel_thread+0x8e/0x96 [<c102c701>] __call_usermodehelper+0x2d/0x46 [<c102cd4f>] run_workqueue+0x89/0x145 [<c102d711>] worker_thread+0xd5/0x102 [<c102ff27>] kthread+0xb3/0xdc [<c10058db>] kernel_thread_helper+0x7/0x10 ======================= 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/51712 XENBUS: Device with no driver: device/vif/0 Freeing unused kernel memory: 180k freed Write protecting the kernel read-only data: 762k ^[Domain installation still in progress. You can reconnect

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[Libvir] RFC: Supporting serial & parallel ports for QEMU (and improving Xen)
by Daniel P. Berrange 27 Feb '08

27 Feb '08

One user's feature request for our QEMU driver is to support serial ports. Easy you might think... you'd be wrong :-) On Xen we have very simple approach. When creating a guest simply add <console/> And it'll cause a serial port to be setup with an autoallocated pty, so you get back <console pty='/dev/pts/5'/> In retrospect calling it 'console' was dumb, but hey we're stuck with that now and its only a tiny naming issue so I don't mind really. We can do the same thing with QEMU quite easily. QEMU, however, supports many many many more ways to hooking up the serial port to Dom0. Indeed so does Xen fullyvirt, but we don't expose this ability. Parallel ports have identical config syntax to serial ports so we might as well deal with both at once. So, here's a stripped down version of the QEMU docs: [quote http://fabrice.bellard.free.fr/qemu/qemu-doc.html#SEC10] `-serial dev' Redirect the virtual serial port to host character device dev. The default device is vc in graphical mode and stdio in non graphical mode. This option can be used several times to simulate up to 4 serials ports. Use -serial none to disable all serial ports. Available character devices are: vc Virtual console pty [Linux only] Pseudo TTY (a new PTY is automatically allocated) none No device is allocated. null void device /dev/XXX [Linux only] Use host tty, e.g. `/dev/ttyS0'. The host serial port parameters are set according to the emulated ones. /dev/parportN [Linux only, parallel port only] Use host parallel port N. Currently only SPP parallel port features can be used. file:filename Write output to filename. No character can be read. stdio [Unix only] standard input/output pipe:filename name pipe filename COMn [Windows only] Use host serial port n udp:[remote_host]:remote_port[@[src_ip]:src_port] This implements UDP Net Console. tcp:[host]:port[,server][,nowait][,nodelay] The TCP Net Console has two modes of operation. telnet:host:port[,server][,nowait][,nodelay] The telnet protocol is used instead of raw tcp sockets. unix:path[,server][,nowait] A unix domain socket is used instead of a tcp socket. [/quote] I don't see any reason to not support all/most of these options. The things I don't like here is that /dev/XXX, vs /dev/parportN, vs COMn differences for connecting guest <-> host passthrough of the devices. I figure it could be simpler if it was just represented as 'n' and we'd translate that to be /dev/ttyS[n] or /dev/parport[n] or COM[n] as needed. The question as ever is how to represent this in XML. For serial ports we'll stick with '<console>', while parallel ports we might as well use a better named '<parallel>'. Next up, I think should use a 'type' attribute on this element to determine the main way ot connecting the device, and then more type specific attributes or sub-elements as needed. If 'type' was not specified then use a default of 'pty', since that gives compatability with existing practice. As an illustrative example /* * Parse the XML definition for a character device * * Top level node will be <console> or <parallel>, but all attributes * and sub-elements are identical. * * type=vc|pty|null|host|file|pipe|udp|tcp|telnet, default is pty * * <console type='vc'/> * * <console type='pty' pty='/dev/pts/3'/> * * <console type='null'/> * * <console type='host' port='3'/> * * <console type='file' path='/some/file'/> * * <console type='pipe' path='/some/file'/> * * <console type='udp'> * <sendto port='12356'/> * </console> * * <console type='udp'> * <sendto addr='127.0.0.1' port='12356'/> * </console> * * <console type='udp'> * <sendto addr='127.0.0.1' port='12356'/> * <bind port='12356'/> * </console> * * <console type='udp'> * <sendto addr='127.0.0.1' port='12356'/> * <bind addr='127.0.0.1' port='12356'/> * </console> * * <console type='tcp'> * <listen port='12356'/> * </console> * * <console type='tcp'> * <listen addr='127.0.0.1' port='12356'> * <nowait/> * <nodelay/> * </listen> * </console> * * <console type='tcp'> * <connect addr='127.0.0.1' port='12356'> * <nodelay/> * </connect> * </console> * * <console type='telnet'> * <listen addr='127.0.0.1' port='12356'/> * </console> * * <console type='telnet'> * <connect addr='127.0.0.1' port='12356'/> * </console> * */ BTW, the udp, tcp, telnet options are only available on QEMU >= 0.9.0. We already have ability to detect / validate that for both Xen & QEMU drivers. NB, whereever there are IP addresses, hostnames can be used too, hence I call the attriute 'addr' instead of 'ip' Regards, Dan. -- |=- Red Hat, Engineering, Emerging Technologies, Boston. +1 978 392 2496 -=| |=- Perl modules: http://search.cpan.org/~danberr/ -=| |=- Projects: http://freshmeat.net/~danielpb/ -=| |=- GnuPG: 7D3B9505 F3C9 553F A1DA 4AC2 5648 23C1 B3DF F742 7D3B 9505 -=|

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[Libvir] Segfault with invalid virConnectPtr
by Richard W.M. Jones 13 Sep '07

13 Sep '07

Program terminated with signal 11, Segmentation fault. #0 0x0000003d8b472a1b in free () from /lib64/libc.so.6 (gdb) bt #0 0x0000003d8b472a1b in free () from /lib64/libc.so.6 #1 0x00002aaaaaae8dd7 in virResetError (err=0x33535c8) at virterror.c:111 #2 0x00002aaaaaae8fce in __virRaiseError (conn=0x33535a0, dom=0x0, net=0x0, domain=0, code=6, level=VIR_ERR_ERROR, str1=0x2aaaaab0c678 "invalid connection pointer in %s", str2=0x2aaaaab08560 "virConnectNumOfDomains", str3=0x0, int1=0, int2=0, msg=0x2aaaaab0c678 "invalid connection pointer in %s") at virterror.c:358 #3 0x00002aaaaaacfa8e in virLibConnError (conn=0x33535a0, error=VIR_ERR_INVALID_CONN, info=0x2aaaaab08560 "virConnectNumOfDomains") at libvirt.c:127 #4 0x00002aaaaaad1052 in virConnectNumOfDomains (conn=0x736e6961) at libvirt.c:758 #5 0x000000000043fa4e in ?? () A preliminary look at the code seems to indicate a fault in this logic: int virConnectNumOfDomains(virConnectPtr conn) { DEBUG("conn=%p", conn); if (!VIR_IS_CONNECT(conn)) { virLibConnError(conn, VIR_ERR_INVALID_CONN, __FUNCTION__); The VIR_IS_CONNECT macro is defined as: #define VIR_CONNECT_MAGIC 0x4F23DEAD #define VIR_IS_CONNECT(obj) ((obj) && (obj)->magic==VIR_CONNECT_MAGIC) Obviously if VIR_IS_CONNECT fails then "conn" should not be used further, so calling virLibConnError (conn, ...) is wrong. Personally I think when we detect memory corruption in a C program we should just call abort(). I'll see if I can come up with a patch to fix this later ... at the moment I'm more interested in why my program is passing an invalid connection pointer in the first place :-( Rich. -- Emerging Technologies, Red Hat - http://et.redhat.com/~rjones/ Registered Address: Red Hat UK Ltd, Amberley Place, 107-111 Peascod Street, Windsor, Berkshire, SL4 1TE, United Kingdom. Registered in England and Wales under Company Registration No. 03798903

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[Libvir] Extending libvirt to probe NUMA topology
by Ryan Harper 11 Sep '07

11 Sep '07

Hello all, I wanted to start a discussion on how we might get libvirt to be able to probe the NUMA topology of Xen and Linux (for QEMU/KVM). In Xen, I've recently posted patches for exporting topology into the [1]physinfo hypercall, as well adding a [2]hypercall to probe the Xen heap. I believe the topology and memory info is already available in Linux. With these, we have enough information to be able to write some simple policy above libvirt that can create guests in a NUMA-aware fashion. I'd like to suggest the following for discussion: (1) A function to discover topology (2) A function to check available memory (3) Specifying which cpus to use prior to domain start Thoughts? 1. http://lists.xensource.com/archives/html/xen-devel/2007-06/msg00298.html 2. http://lists.xensource.com/archives/html/xen-devel/2007-06/msg00299.html -- Ryan Harper Software Engineer; Linux Technology Center IBM Corp., Austin, Tx (512) 838-9253 T/L: 678-9253 ryanh(a)us.ibm.com

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[Libvir] feature sujestions
by Márcio Parise Boufleur 06 Sep '07

06 Sep '07

Hello, I'm a grad student from Brazil. I was looking for some interesting project to do as my final work and it I think that contributing to your project would be a great achievement to me. Do you have some kind list with feature suggestions? I am particularly interested in remote administration. I helped a colleague to write a graphical tool to administrate a remote Xen site last year. Thank you. MB -- Computers are useless; they can only give you answers! -- Picasso

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[Libvir] libvirt on Windows
by Ronald Long 31 Aug '07

31 Aug '07

I am trying to talk to a 4.0.1 Xen Hypervisor (not Xen underneath a Linux Distro) (via Python) from a Windows box. (Am able to successfully connect and communicate using the Xen API Python bindings). Looks like at the very least I need to build libvirtmon.la from the c sources. Am I just dealing with "beginneritis", or trying to do something (run from Windows) that hasn't been done before? thanks ronald

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[Libvir] Ruby bindings for libvirt
by Meng Kuan 31 Aug '07

31 Aug '07

Hi, I am exploring the possibility of creating ruby bindings for libvirt. The only attempt I found after some searching is this: http://www.cs.ucsb.edu/~ckrintz/racelab/jisha/ Following the SWIG method as described in the above URL, I have gotten to the following point: [root@dell1 libvirt_ruby]# irb irb(main):001:0> require 'libvirt_ruby' => true irb(main):002:0> conn = Libvirt_ruby.virConnectOpenReadOnly("") => #<SWIG::TYPE_p__virConnect:0x2aaaaabc46c8> irb(main):003:0> dom = Libvirt_ruby.virDomainLookupByID(conn, 0) => #<SWIG::TYPE_p__virDomain:0x2aaaaabb5df8> irb(main):004:0> ret = Libvirt_ruby.virDomainGetInfo(dom, info) NameError: undefined local variable or method `info' for main:Object from (irb):4 irb(main):005:0> I am not sure how to create and pass in a ptr to a virDomainInfo struct object into the virDomainGetInfo call within ruby. Note that I was trying to following the info1.c example on the libvirt website: http://libvirt.org/examples/info1.c As you can tell, this is the first time I am trying to create any sort of language bindings for a C library. Some questions: 1. Is there a better way of creating ruby bindings for libvirt besides SWIG? If so, any pointers on what should be done? 2. Alternatively I can try to make my ruby code use libvirt-python bindings as a python library. Has anyone done so? Any problems with this approach? cheers, mengkuan

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[Libvir] --without-*
by Mark Johnson 31 Aug '07

31 Aug '07

Hi all, Merging up to 0.3.2 on Solaris finally.. I had a couple of things on my list of hacked patches, and not being a configure expert I figured I would ask here... How hard it is to change the config logic to account for the various --without's. e.g. --without-qemu, o ./Makefile.in - SUBDIRS shouldn't include qemud o ./src/Makefile.in o am__objects_1 shouldn't include: o libvirt_la-bridge.lo o libvirt_la-iptables.lo o libvirt_la-qemu_driver.lo o libvirt_la-qemu_conf.lo o client sources, build rules, etc for the above. --without-test (Incuding srcs, rules, etc) o libvirt_la-test.lo, etc... --without-xen (Incuding srcs, rules, etc) o libvirt_la-xen_internal.lo o libvirt_la-xs_internal.lo o libvirt_la-xend_internal.lo --without-remote (Incuding srcs, rules, etc) o libvirt_la-remote_internal.lo o am_libvirt_la_OBJECTS shouldn't include am__objects_2 One other thing I was curious about... I noticed the remote code uses remote_protocol* out of the ./qemud dir.. I was just curious if I should expect that to move somewhere else soon, or if you were going to leave it there? Thanks, Mark.

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[Libvir] [PATCH] Fix endless loop of VirBufferVSprintf()
by Masayuki Sunou 30 Aug '07

30 Aug '07

Hi VirBufferVSprintf() loops endless when it receives over 2000 bytes, because the return value of vsnprintf() is more than "size - 1". It is because the maximum of "size" is 1999 bytes. --> the maximum of "buf->size - buf->use" = 2000 (1000(argument of virBufferGrow()) + 1000(set in virBufferGrow())) So, virBufferEscapeString() has the same problem. This patch sets to virBufferGrow() the size of the data which VirBufferVSprintf()(virBufferEscapeString()) received when it is over 1000 bytes. Signed-off-by: Masayuki Sunou <fj1826dm(a)aa.jp.fujitsu.com> Thanks, Masayuki Sunou. ---------------------------------------------------------------------- Index: src/buf.c =================================================================== RCS file: /data/cvs/libvirt/src/buf.c,v retrieving revision 1.3 diff -u -p -r1.3 buf.c --- src/buf.c 9 Jul 2007 11:24:52 -0000 1.3 +++ src/buf.c 24 Aug 2007 05:56:37 -0000 @@ -159,7 +159,7 @@ virBufferContentAndFree (virBufferPtr bu int virBufferVSprintf(virBufferPtr buf, const char *format, ...) { - int size, count; + int size, count, grow_size; va_list locarg, argptr; if ((format == NULL) || (buf == NULL)) { @@ -172,7 +172,8 @@ virBufferVSprintf(virBufferPtr buf, cons locarg)) < 0) || (count >= size - 1)) { buf->content[buf->use] = 0; va_end(locarg); - if (virBufferGrow(buf, 1000) < 0) { + grow_size = (count > 1000) ? count : 1000; + if (virBufferGrow(buf, grow_size) < 0) { return (-1); } size = buf->size - buf->use - 1; @@ -198,7 +199,7 @@ virBufferVSprintf(virBufferPtr buf, cons int virBufferEscapeString(virBufferPtr buf, const char *format, const char *str) { - int size, count, len; + int size, count, len, grow_size; char *escaped, *out; const char *cur; @@ -248,7 +249,8 @@ virBufferEscapeString(virBufferPtr buf, while (((count = snprintf(&buf->content[buf->use], size, format, (char *)escaped)) < 0) || (count >= size - 1)) { buf->content[buf->use] = 0; - if (virBufferGrow(buf, 1000) < 0) { + grow_size = (count > 1000) ? count : 1000; + if (virBufferGrow(buf, grow_size) < 0) { free(escaped); return (-1); } ----------------------------------------------------------------------

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[Libvir] ANNOUNCE: virt-top 0.3.2.5 released
by Richard W.M. Jones 30 Aug '07

30 Aug '07

I'm pleased to announce a new release of virt-top, which is a utility like 'top' that works for virtual machines. Many keys and command line options are the same as for ordinary top. Thanks to all the people who have been playing with it and sending me feedback. This version adds block device and network statistics (if supported by the hypervisor and libvirt). This version also fixes a bug where it would fail silently if unable to contact the hypervisor. Main page: http://et.redhat.com/~rjones/virt-top/ Source and binaries for several architectures available from: http://et.redhat.com/~rjones/virt-top/download.html If you have Fedora 7, this will probably work: yum --enablerepo=development install virt-top Rich. -- Emerging Technologies, Red Hat - http://et.redhat.com/~rjones/ Registered Address: Red Hat UK Ltd, Amberley Place, 107-111 Peascod Street, Windsor, Berkshire, SL4 1TE, United Kingdom. Registered in England and Wales under Company Registration No. 03798903

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