http://lists.gnu.org/archive/html/qemu-devel/2013-04/msg02662.html
-- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux in Ubuntu. https://bugs.launchpad.net/bugs/1180021 Title: I/O errors seen on tmpfs Status in “linux” package in Ubuntu: Confirmed Bug description: Occasionally when using diskimage-builder on a large system with a large TMPFS, we see this error: qemu-img: error while compressing sector 2069504: Input/output error The exact operation that is happening is that qemu-img is taking a .raw file that is on a tmpfs partition and converting it to a qcow2 image. However, sometimes we also see errors when we create a loopback device and mkfs onto it. The exact steps to reproduce: git clone https://github.com/stackforge/diskimage-builder.git cd diskimage-builder bin/disk-image-create -x -a i386 base It does not happen every time, maybe 1 in 10. However I have seen it on both Ubuntu 12.10 systems and Ubuntu 13.04, all on amd64. Also many times the errors are accompanied by these: May 13 16:09:57 clint-HP kernel: [975578.653245] Buffer I/O error on device loop2p1, logical block 1943681 May 13 16:09:57 clint-HP kernel: [975578.653251] Buffer I/O error on device loop2p1, logical block 1943682 May 13 16:09:57 clint-HP kernel: [975578.653256] Buffer I/O error on device loop2p1, logical block 1943683 May 13 16:09:57 clint-HP kernel: [975578.653261] Buffer I/O error on device loop2p1, logical block 1943684 May 13 16:09:57 clint-HP kernel: [975578.653266] Buffer I/O error on device loop2p1, logical block 1943685 May 13 16:09:57 clint-HP kernel: [975578.653271] Buffer I/O error on device loop2p1, logical block 1943686 May 13 16:09:57 clint-HP kernel: [975578.653275] Buffer I/O error on device loop2p1, logical block 1943687 May 13 16:09:57 clint-HP kernel: [975578.653283] Buffer I/O error on device loop2p1, logical block 1943680 May 13 16:09:57 clint-HP kernel: [975578.653288] Buffer I/O error on device loop2p1, logical block 1943681 ProblemType: Bug DistroRelease: Ubuntu 13.04 Package: linux-image-3.8.0-19-generic 3.8.0-19.30 ProcVersionSignature: Ubuntu 3.8.0-19.29-generic 3.8.8 Uname: Linux 3.8.0-19-generic x86_64 ApportVersion: 2.9.2-0ubuntu8 Architecture: amd64 AudioDevicesInUse: USER PID ACCESS COMMAND /dev/snd/controlC1: clint 3245 F.... pulseaudio /dev/snd/controlC0: clint 3245 F.... pulseaudio Date: Tue May 14 10:05:58 2013 HibernationDevice: RESUME=UUID=b753173e-b967-403e-b076-b1cfb5bc6e80 InstallationDate: Installed on 2013-01-14 (120 days ago) InstallationMedia: Ubuntu 12.10 "Quantal Quetzal" - Release amd64+mac (20121017.3) MachineType: Hewlett-Packard HP EliteBook Folio 9470m MarkForUpload: True ProcEnviron: TERM=xterm PATH=(custom, no user) XDG_RUNTIME_DIR=<set> LANG=en_US.UTF-8 SHELL=/bin/bash ProcFB: 0 inteldrmfb ProcKernelCmdLine: BOOT_IMAGE=/vmlinuz-3.8.0-19-generic root=/dev/mapper/ubuntu-root ro quiet splash vt.handoff=7 RelatedPackageVersions: linux-restricted-modules-3.8.0-19-generic N/A linux-backports-modules-3.8.0-19-generic N/A linux-firmware 1.106 SourcePackage: linux UpgradeStatus: Upgraded to raring on 2013-04-30 (13 days ago) dmi.bios.date: 09/24/2012 dmi.bios.vendor: Hewlett-Packard dmi.bios.version: 68IBD Ver. F.30 dmi.board.name: 18DF dmi.board.vendor: Hewlett-Packard dmi.board.version: KBC Version 62.13 dmi.chassis.asset.tag: CNU2439PZT dmi.chassis.type: 10 dmi.chassis.vendor: Hewlett-Packard dmi.modalias: dmi:bvnHewlett-Packard:bvr68IBDVer.F.30:bd09/24/2012:svnHewlett-Packard:pnHPEliteBookFolio9470m:pvrA1029D1103:rvnHewlett-Packard:rn18DF:rvrKBCVersion62.13:cvnHewlett-Packard:ct10:cvr: dmi.product.name: HP EliteBook Folio 9470m dmi.product.version: A1029D1103 dmi.sys.vendor: Hewlett-Packard To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1180021/+subscriptions -- Mailing list: https://launchpad.net/~kernel-packages Post to : kernel-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~kernel-packages More help : https://help.launchpad.net/ListHelp
