** Description changed: I seem to experience a race condition during boot of my ubuntu 12.04 server: In approx. one of seven boots, the server hangs during bootup. This is what I see on the screen: After the line - * Starting configure network device + * Starting configure network device there is a short delay of about 1 second, then messages continue. I see - * Starting Mount network filesystems [ OK ] - * Starting set sysctls from /etc/sysctl.conf [ OK ] - * Starting configure network device [ OK ] - * Stopping Mount network filesystems [ OK ] - * Stopping set sysctls from /etc/sysctl.conf [ OK ] - * Starting Block the mounting event for NFS filesytems until statd is running [ OK ] - * Stopping Block the mounting event for NFS filesytems until statd is running [ OK ] - * Starting Block the mounting event for NFS filesytems until statd is running [ OK ] - * Stopping Block the mounting event for NFS filesytems until statd is running [ OK ] + * Starting Mount network filesystems [ OK ] + * Starting set sysctls from /etc/sysctl.conf [ OK ] + * Starting configure network device [ OK ] + * Stopping Mount network filesystems [ OK ] + * Stopping set sysctls from /etc/sysctl.conf [ OK ] + * Starting Block the mounting event for NFS filesytems until statd is running [ OK ] + * Stopping Block the mounting event for NFS filesytems until statd is running [ OK ] + * Starting Block the mounting event for NFS filesytems until statd is running [ OK ] + * Stopping Block the mounting event for NFS filesytems until statd is running [ OK ] The last messages repeats several times, and then the boot process hangs. In 6/7 of cases, I wait for a minute, and after that bootup continues. But in approx 1/7 cases, the system hangs at this point forever. The machine does not respond to CTRL-ALT-DEL, I have to reboot it using SysRq-Keys. + + WORKAROUND: Setting the NFS entries in fstab to "noauto" completely removes the problem: + There is no timeout during boot, and no lockup any more. The machine boote smoothly with the NFS-shares unmounted. After the machine is up, we can manually mount the NFS-shares without a problem. ProblemType: Bug DistroRelease: Ubuntu 12.04 Package: linux-image-3.2.0-37-generic 3.2.0-37.58 ProcVersionSignature: Ubuntu 3.2.0-37.58-generic 3.2.35 Uname: Linux 3.2.0-37-generic x86_64 AlsaVersion: Advanced Linux Sound Architecture Driver Version 1.0.24. AplayDevices: aplay: device_list:252: keine Soundkarten gefunden ... ApportVersion: 2.0.1-0ubuntu17.1 Architecture: amd64 ArecordDevices: arecord: device_list:252: keine Soundkarten gefunden ... AudioDevicesInUse: Error: command ['fuser', '-v', '/dev/snd/by-path', '/dev/snd/controlC1', '/dev/snd/hwC1D0', '/dev/snd/pcmC1D3p', '/dev/snd/controlC0', '/dev/snd/hwC0D0', '/dev/snd/pcmC0D0c', '/dev/snd/pcmC0D0p', '/dev/snd/pcmC0D1p', '/dev/snd/pcmC0D2c', '/dev/snd/seq', '/dev/snd/timer'] failed with exit code 1: CRDA: Error: command ['iw', 'reg', 'get'] failed with exit code 1: nl80211 not found. CurrentDmesg: [ 85.200104] lxcbr0: no IPv6 routers present Date: Thu Feb 7 15:50:40 2013 HibernationDevice: RESUME=UUID=6c172536-57cc-4deb-867a-0718d572f23e IwConfig: - lo no wireless extensions. - - eth0 no wireless extensions. - - lxcbr0 no wireless extensions. + lo no wireless extensions. + + eth0 no wireless extensions. + + lxcbr0 no wireless extensions. MachineType: To be filled by O.E.M. To be filled by O.E.M. MarkForUpload: True ProcEnviron: - LANGUAGE=de:en - TERM=xterm - PATH=(custom, no user) - LANG=de_DE.UTF-8 - SHELL=/bin/bash + LANGUAGE=de:en + TERM=xterm + PATH=(custom, no user) + LANG=de_DE.UTF-8 + SHELL=/bin/bash ProcFB: 0 radeondrmfb ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.2.0-37-generic root=/dev/mapper/lvmvg-root ro debug splash vt.handoff=7 PulseList: Error: command ['pacmd', 'list'] failed with exit code 1: Es läuft kein PulseAudio-Dienst oder nicht als Sessiondienst. RelatedPackageVersions: - linux-restricted-modules-3.2.0-37-generic N/A - linux-backports-modules-3.2.0-37-generic N/A - linux-firmware 1.79.1 + linux-restricted-modules-3.2.0-37-generic N/A + linux-backports-modules-3.2.0-37-generic N/A + linux-firmware 1.79.1 RfKill: - + SourcePackage: linux UpgradeStatus: Upgraded to precise on 2012-04-28 (285 days ago) dmi.bios.date: 07/04/2012 dmi.bios.vendor: American Megatrends Inc. dmi.bios.version: 0302 dmi.board.asset.tag: To be filled by O.E.M. dmi.board.name: M5A97 EVO R2.0 dmi.board.vendor: ASUSTeK COMPUTER INC. dmi.board.version: Rev 1.xx dmi.chassis.asset.tag: To Be Filled By O.E.M. dmi.chassis.type: 3 dmi.chassis.vendor: To Be Filled By O.E.M. dmi.chassis.version: To Be Filled By O.E.M. dmi.modalias: dmi:bvnAmericanMegatrendsInc.:bvr0302:bd07/04/2012:svnTobefilledbyO.E.M.:pnTobefilledbyO.E.M.:pvrTobefilledbyO.E.M.:rvnASUSTeKCOMPUTERINC.:rnM5A97EVOR2.0:rvrRev1.xx:cvnToBeFilledByO.E.M.:ct3:cvrToBeFilledByO.E.M.: dmi.product.name: To be filled by O.E.M. dmi.product.version: To be filled by O.E.M. dmi.sys.vendor: To be filled by O.E.M.
** Tags added: bios-outdated-1903 ** Tags removed: kernel-bug-exists-upstream ** Tags added: kernel-bug-exists-upstream-v3.8-rc6 needs-upstream-testing regression-potential -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1118447 Title: Race condition with network and NFS mounts causes boottime hang To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1118447/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
