virt-manager create new VM fails with "Unable to read from monitor" after increasing memory size

Bug #1244709 reported by Thorsten Hesemeyer
6
This bug affects 1 person
Affects Status Importance Assigned to Milestone
virt-manager (Ubuntu)
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Bug Description

Creating a new virtual machine fails in virt-manager if you increase the memory (RAM) to 2048.

Qemu log file says:
*** qemu: at most 2047 MB RAM can be simulated
So virt-manager should not allow assigning more than 2047 MB of RAM in this setup.

Why is this important
=====================
The error message printed does not give a hint why the VM creation failed.

Complete error message
======================
Unable to complete install: 'Unable to read from monitor: Connection reset by peer'

Traceback (most recent call last):
  File "/usr/share/virt-manager/virtManager/asyncjob.py", line 45, in cb_wrapper
    callback(asyncjob, *args, **kwargs)
  File "/usr/share/virt-manager/virtManager/create.py", line 1909, in do_install
    guest.start_install(False, meter=meter)
  File "/usr/lib/python2.7/dist-packages/virtinst/Guest.py", line 1236, in start_install
    noboot)
  File "/usr/lib/python2.7/dist-packages/virtinst/Guest.py", line 1304, in _create_guest
    dom = self.conn.createLinux(start_xml or final_xml, 0)
  File "/usr/lib/python2.7/dist-packages/libvirt.py", line 2166, in createLinux
    if ret is None:raise libvirtError('virDomainCreateLinux() failed', conn=self)
libvirtError: Unable to read from monitor: Connection reset by peer

Steps to reproduce
==================
1. start virt-manager
2. wait
3. press NEW button
4. Step #1: enter name for new virtual machine e.g. "ubu1210", leave default "local install media"
5. Step #2: choose iso image from local drive e.g. "ubuntu-12.10-desktop-amd64.iso", then choose "Linux", "Ubuntu 12.10 Quantal"
6. Step #3: set Memory (RAM) to "2048"
7. Step #4: disk size and location do not matter, choose anything
8. Step #5: just press FINISH button

VM creation fails after the disk image had been created.
Failure reported to the user does not help to solve the issue.

Kind regards,
Thorsten

3.

ProblemType: Bug
DistroRelease: Ubuntu 12.04
Package: virt-manager 0.9.1-1ubuntu5.1
ProcVersionSignature: Ubuntu 3.2.0-55.85-generic-pae 3.2.51
Uname: Linux 3.2.0-55-generic-pae i686
NonfreeKernelModules: symap_custom_3.2.0_55_generic_pae_i686 symev_custom_3.2.0_55_generic_pae_i686 nvidia
ApportVersion: 2.0.1-0ubuntu17.6
Architecture: i386
Date: Fri Oct 25 17:36:18 2013
ExecutablePath: /usr/share/virt-manager/virt-manager.py
InstallationMedia: Ubuntu 10.10 "Maverick Meerkat" - Release i386 (20101007)
InterpreterPath: /usr/bin/python2.7
MarkForUpload: True
PackageArchitecture: all
SourcePackage: virt-manager
UpgradeStatus: Upgraded to precise on 2012-07-04 (477 days ago)

Revision history for this message
Thorsten Hesemeyer (thorsten-hesemeyer) wrote :
summary: - virt-manager create new "Unable to read from monitor" after increasing
- memory size
+ virt-manager create new VM fails with "Unable to read from monitor"
+ after increasing memory size
description: updated
description: updated
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