Public bug reported: creating disk images with either VirtualBox or qemu-img causes the process to stop responding and consume 100% of the cpu of one core of the dual core processor. Kill -9 does not effect the process. the only way to stop it is to reboot the computer. i also encountered this with transmission at one point as well.
on my system, to reproduce this, simply run the command: $ qemu-img create -f raw Ubuntu-11.04-desktop.img 5G this is supposed to create a five gigabyte raw disk image that i can install a copy of Ubuntu under qemu. also happens every time i try to create a disk image in VirtualBox. Start VirtualBox, and create a new virtual machine. give it a name, select the OS and version, memory size, virtual hard disk, create new disk. this starts the "virtual disk creation wizard', i choose the VDI image type, and elect to have all of the disk space allocated by checking fixed size. next choose the location and size. lastly, a summary is displayed, clicking on create causes a status dialog to pop up and VirtualBox starts to make the disk. shortly, the VBoxSVC process appears and after a time, consumes 100% cpu time. this bug is likely related to bug 913787 at https://bugs.launchpad.net/ubuntu/+source/linux/+bug/913787 . like Sampo, my home directory is encrypted. however, his dd command does not reproduce the bug for me. in my case, this issue seemed to apear after upgrading the kernel to 3.0.0-15-generic, however while VirtualBox worked with 3.0.0-14 and older, this problem occures with qemu-img in 3.0.0-14 and -13 as well. ProblemType: Bug DistroRelease: Ubuntu 11.10 Package: qemu-kvm 0.14.1+noroms-0ubuntu6.2 ProcVersionSignature: Ubuntu 3.0.0-15.26-generic 3.0.13 Uname: Linux 3.0.0-15-generic i686 NonfreeKernelModules: wl ApportVersion: 1.23-0ubuntu4 Architecture: i386 Date: Thu Feb 2 00:19:02 2012 EcryptfsInUse: Yes ExecutablePath: /usr/bin/qemu-img InstallationMedia: Ubuntu 11.10 "Oneiric Ocelot" - Release i386 (20111012) KvmCmdLine: Error: command ['ps', '-C', 'kvm', '-F'] failed with exit code 1: UID PID PPID C SZ RSS PSR STIME TTY TIME CMD MachineType: LENOVO 2958 ProcEnviron: SHELL=/bin/bash PATH=(custom, user) LANG=en_US.UTF-8 ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.0.0-15-generic root=UUID=a6551c5d-43b4-4962-b132-0ddf59cb55ac ro crashkernel=384M-2G:64M,2G-:128M quiet splash vt.handoff=7 SourcePackage: qemu-kvm UpgradeStatus: Upgraded to oneiric on 2012-01-14 (18 days ago) dmi.bios.date: 05/05/2010 dmi.bios.vendor: LENOVO dmi.bios.version: 18CN45WW(V2.54) dmi.board.name: NITU1 dmi.board.vendor: LENOVO dmi.board.version: REFERENCE dmi.chassis.asset.tag: No Asset Tag dmi.chassis.type: 10 dmi.chassis.vendor: No Enclosure dmi.chassis.version: N/A dmi.modalias: dmi:bvnLENOVO:bvr18CN45WW(V2.54):bd05/05/2010:svnLENOVO:pn2958:pvrLenovoG550:rvnLENOVO:rnNITU1:rvrREFERENCE:cvnNoEnclosure:ct10:cvrN/A: dmi.product.name: 2958 dmi.product.version: Lenovo G550 dmi.sys.vendor: LENOVO ** Affects: linux (Ubuntu) Importance: Undecided Status: New ** Tags: apport-bug i386 oneiric running-unity -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/925309 Title: unkillable process consuming 100% cpu time To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/925309/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
