** Description changed: On Trusty and Utopic, this works: $ sudo modprobe nbd $ sudo qemu-nbd --snapshot -c /dev/nbd0 my.qcow2 $ sudo mount /dev/nbd0p1 /mnt $ sudo umount /mnt - But on Vivid, even though the mount command exists with 0, something - goes awry and the mount point gets unmounted immediately. No files will + But on Vivid, even though the mount command exits with 0, something goes + awry and the mount point gets unmounted immediately. No files will actually be available, and umount will exit with 32 (umount: /mnt: not mounted). Possibly useful bits from dmesg: [ 172.010766] kvm [2750]: vcpu0 disabled perfctr wrmsr: 0xc1 data 0xffff [ 208.379278] nbd0: p1 p2 < p5 > [ 208.395989] EXT4-fs (nbd0p1): mounted filesystem with ordered data mode. Opts: (null) [ 532.601057] block nbd0: NBD_DISCONNECT [ 532.601150] block nbd0: Receive control failed (result -32) [ 532.601177] block nbd0: queue cleared [ 671.892460] nbd0: p1 p2 < p5 > [ 697.575545] EXT4-fs (nbd0p1): mounted filesystem with ordered data mode. Opts: (null) [ 775.331402] EXT4-fs (sda2): mounted filesystem with ordered data mode. Opts: (null) [ 793.632005] EXT4-fs (nbd0p1): mounted filesystem with ordered data mode. Opts: (null) ProblemType: Bug DistroRelease: Ubuntu 15.04 Package: qemu-utils 1:2.2+dfsg-5expubuntu8 ProcVersionSignature: Ubuntu 3.19.0-9.9-generic 3.19.1 Uname: Linux 3.19.0-9-generic x86_64 NonfreeKernelModules: nvidia ApportVersion: 2.16.2-0ubuntu4 Architecture: amd64 CurrentDesktop: Unity Date: Mon Mar 23 10:45:24 2015 KvmCmdLine: COMMAND STAT EUID RUID PID PPID %CPU COMMAND kvm-irqfd-clean S< 0 0 486 2 0.0 [kvm-irqfd-clean] qemu-nbd Ssl 0 0 3105 1618 0.0 qemu-nbd --snapshot -c /dev/nbd0 -t /home/tribble/vivid-server-amd64.qcow2 MachineType: Notebook P750ZM ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.19.0-9-generic root=UUID=db0af986-9e96-441e-a383-e5b3ba2e837b ro quiet splash SourcePackage: qemu UdevLog: Error: [Errno 2] No such file or directory: '/var/log/udev' UpgradeStatus: No upgrade log present (probably fresh install) dmi.bios.date: 02/25/2015 dmi.bios.vendor: American Megatrends Inc. dmi.bios.version: 1.03.09aRSCC dmi.board.asset.tag: Tag 12345 dmi.board.name: P750ZM dmi.board.vendor: Notebook dmi.board.version: Not Applicable dmi.chassis.asset.tag: No Asset Tag dmi.chassis.type: 9 dmi.chassis.vendor: Notebook dmi.chassis.version: N/A dmi.modalias: dmi:bvnAmericanMegatrendsInc.:bvr1.03.09aRSCC:bd02/25/2015:svnNotebook:pnP750ZM:pvrNotApplicable:rvnNotebook:rnP750ZM:rvrNotApplicable:cvnNotebook:ct9:cvrN/A: dmi.product.name: P750ZM dmi.product.version: Not Applicable dmi.sys.vendor: Notebook
-- You received this bug notification because you are a member of Ubuntu Server Team, which is subscribed to qemu in Ubuntu. https://bugs.launchpad.net/bugs/1435428 Title: vivid: mounting with qemu-nbd fails To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/qemu/+bug/1435428/+subscriptions -- Ubuntu-server-bugs mailing list Ubuntu-server-bugs@lists.ubuntu.com Modify settings or unsubscribe at: https://lists.ubuntu.com/mailman/listinfo/ubuntu-server-bugs
