[libvirt-users] [Solved] Error installing VM: "Process exited while reading console log output"

[Patrick 'P. J.' McDermott]

On 2012-12-28 00:14, Osier Yang wrote:
> On 2012年12月28日 05:28, Patrick 'P. J.' McDermott wrote:
[...]
>> Of particular interest in the log seems to be:
>>
>>      11:53:20.636: debug : virExecWithHook:709 : LC_ALL=C /usr/bin/kvm -device pci-assign,?
>>      11:53:20.673: warning : qemudParsePCIDeviceStrs:1422 : Unexpected exit status '1', qemu probably failed
>>
>> I ran QEMU with that "-device" option:
>>
>>      $ LC_ALL=C /usr/bin/kvm -device pci-assign,?
>>      property "pci-assign.?" not found
>>      can't set property "?" to "on" for "pci-assign"
> 
> qemudParsePCIDeviceStrs should be involked when detecting the
> qemu capability, and it should [not] be the cause of the qemu crash.

Yeah, that's what I thought.

> However, unfortunately, I can't even find the function from
> git log.

It's defined statically at src/qemu/qemu_conf.c:1384 in libvirt 0.8.3
[1].

>> So it looks like libvirtd (0.8.3) is trying to get a list of all
> 
> It's too old. :-), can you try to upgrade your libvirt?

Yeah, I'm trying to set up virtual machines in an old host system, which
I plan to reinstall – likely with a newer OS version – after I move all
of its services to the VMs. :)

I installed backported packages of libvirt 0.9.12 and qemu-kvm 1.1.2.

Running virt-install again failed, but this time QEMU gave a rather
helpful error message:

    Starting install...
    Retrieving file MANIFEST...                  | 3.3 kB     00:00 ...
    Retrieving file linux...                     | 4.6 MB     00:13 ...
    Retrieving file initrd.gz...                 |  13 MB     00:45 ...
    ERROR    internal error Process exited while reading console log output: 2012-12-29 03:41:07.802+0000: 1532: info : libvirt version: 0.9.12
    char device redirected to /dev/pts/5                                                                                                               
    Failed to allocate 140737488355328 B: Cannot allocate memory

    Domain installation does not appear to have been
     successful.  If it was, you can restart your domain
     by running 'virsh start test1'; otherwise, please
     restart your installation.
    ERROR    internal error Process exited while reading console log output: 2012-12-29 03:41:07.802+0000: 1532: info : libvirt version: 0.9.12
    char device redirected to /dev/pts/5
    Failed to allocate 140737488355328 B: Cannot allocate memory
    Traceback (most recent call last):
      File "/usr/bin/virt-install", line 1033, in <module>
        main()
      File "/usr/bin/virt-install", line 915, in main
        start_time, guest.start_install)
      File "/usr/bin/virt-install", line 957, in do_install
        dom = install_func(conscb, progresscb, wait=(not wait))
      File "/usr/lib/pymodules/python2.6/virtinst/Guest.py", line 973, in start_install
        return self._do_install(consolecb, meter, removeOld, wait)
      File "/usr/lib/pymodules/python2.6/virtinst/Guest.py", line 1038, in _do_install
        "install")
      File "/usr/lib/pymodules/python2.6/virtinst/Guest.py", line 1009, in _create_guest
        dom = self.conn.createLinux(start_xml, 0)
      File "/usr/lib/python2.6/dist-packages/libvirt.py", line 1277, in createLinux
        if ret is None:raise libvirtError('virDomainCreateLinux() failed', conn=self)
    libvirtError: internal error Process exited while reading console log output: 2012-12-29 03:41:07.802+0000: 1532: info : libvirt version: 0.9.12
    char device redirected to /dev/pts/5
    Failed to allocate 140737488355328 B: Cannot allocate memory

(This error message is from qemu_memalign() at oslib-posix.c:95 in
qemu-kvm 1.1.2 [2].)

Apparently I misunderstood the units of the --ram option value…  On my
system which has 2 GiB of RAM, running virt-install with a --ram option
value of "128" (128 MiB) instead of "$((128 * 1024 * 1024))" (128 TiB!)
worked much better. :)

So this is just a case of user error, hidden by a lack of output in an
old version of QEMU.

>> properties of the pci-assign driver, but QEMU 0.12.x doesn't support
>> this.  But I'm not sure if that's related to why QEMU crashes later on.
>>
>> [1]: http://odin1.pehjota.net/~pj/servers/libvirtd.log

[1]: http://libvirt.org/git/?p=libvirt.git;a=blob;f=src/qemu/qemu_conf.c;h=53979973;hb=d3d33c82#l1384
[2]: http://anonscm.debian.org/gitweb/?p=collab-maint/qemu-kvm.git;a=blob;f=oslib-posix.c;h=b6a3c7fc;hb=abe7c37a#l95

Thanks for the help, and sorry for the noise over such a mistake,
-- 
Patrick "P. J." McDermott
http://www.pehjota.net/
http://www.pehjota.net/contact.html