** Description changed: I have experienced IO lock-ups when unmounting lvm2 snapshots partitions containing ext4. All IO, sound, etc will hang, though alt-sysrq remains responsive (I can do alt-sysrq-b and it reboots, e.g.). This problem is intermittent, unfortunately, but I see it most often when I have performing a package build via sbuild in an LVM based snapshot schroot. Steps to reproduce (probably not the minimal test case...): Terminal 1: - create an MD device across two physical drives - sudo -s - vgcreate testvg /dev/md0 - lvcreate -L10G -n testlv testvg - mkfs.ext4 /dev/testvg/testlv - mkdir /mnt/test - - mount /dev/testvg/testlv + - mount /dev/testvg/testlv /mnt/test - apt-get install ubuntu-dev-tools - while :; do cp -a /usr /mnt/test; sleep 1; rm -rf /mnt/test/usr; done Then in Terminal 2: - mk-sbuild --vg=VG karmic - cd /tmp - dget https://launchpad.net/ubuntu/+archive/primary/+files/dpkg_1.15.4ubuntu2.dsc - while :; do sbuild -d karmic dpkg*.dsc"; done & - while :; do sbuild -d karmic dpkg*.dsc"; done ProblemType: Bug AlsaVersion: Advanced Linux Sound Architecture Driver Version 1.0.21. AplayDevices: - **** List of PLAYBACK Hardware Devices **** - card 0: Intel [HDA Intel], device 0: ALC268 Analog [ALC268 Analog] - Subdevices: 1/1 - Subdevice #0: subdevice #0 + **** List of PLAYBACK Hardware Devices **** + card 0: Intel [HDA Intel], device 0: ALC268 Analog [ALC268 Analog] + Subdevices: 1/1 + Subdevice #0: subdevice #0 Architecture: amd64 AudioDevicesInUse: - USER PID ACCESS COMMAND - /dev/snd/controlC0: kees 3851 F.... pulseaudio + USER PID ACCESS COMMAND + /dev/snd/controlC0: kees 3851 F.... pulseaudio CRDA: Error: [Errno 2] No such file or directory Card0.Amixer.info: - Card hw:0 'Intel'/'HDA Intel at 0xe0420000 irq 22' - Mixer name : 'Realtek ALC268' - Components : 'HDA:10ec0268,80860000,00100003' - Controls : 17 - Simple ctrls : 11 + Card hw:0 'Intel'/'HDA Intel at 0xe0420000 irq 22' + Mixer name : 'Realtek ALC268' + Components : 'HDA:10ec0268,80860000,00100003' + Controls : 17 + Simple ctrls : 11 Date: Wed Mar 10 15:28:56 2010 DistroRelease: Ubuntu 10.04 HibernationDevice: RESUME=/dev/md1 Package: linux-image-2.6.32-16-generic 2.6.32-16.24 ProcCmdLine: BOOT_IMAGE=/vmlinuz-2.6.32-16-generic root=/dev/mapper/systemvg-root2lv ro quiet splash ProcEnviron: - LANGUAGE=en_US:en - PATH=(custom, user) - LANG=en_US.UTF-8 - SHELL=/bin/bash + LANGUAGE=en_US:en + PATH=(custom, user) + LANG=en_US.UTF-8 + SHELL=/bin/bash ProcVersionSignature: Ubuntu 2.6.32-16.24-generic Regression: Yes RelatedPackageVersions: linux-firmware 1.32 Reproducible: Yes RfKill: - + SourcePackage: linux TestedUpstream: No Uname: Linux 2.6.32-16-generic x86_64 WpaSupplicantLog: - + dmi.bios.date: 09/22/2008 dmi.bios.vendor: Intel Corp. dmi.bios.version: JOQ3510J.86A.0954.2008.0922.2331 dmi.board.asset.tag: Base Board Asset Tag dmi.board.name: DQ35JO dmi.board.vendor: Intel Corporation dmi.board.version: AAD82085-800 dmi.chassis.type: 3 dmi.modalias: dmi:bvnIntelCorp.:bvrJOQ3510J.86A.0954.2008.0922.2331:bd09/22/2008:svn:pn:pvr:rvnIntelCorporation:rnDQ35JO:rvrAAD82085-800:cvn:ct3:cvr:
-- kernel lockups unmounting ext4 lvm2 snapshots https://bugs.launchpad.net/bugs/536994 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
