[Bug 667986] [NEW] Disk image type defaults to raw since 0.7.5-5ubuntu27.5
Public bug reported: Ubuntu 10.04.1 LTS libvirt-bin 0.7.5-5ubuntu27.6 Since 0.7.5-5ubuntu27.5 (http://www.ubuntuupdates.org/packages/show/253540) the default type of diskimages is RAW. Before this version the diskimage type was automatically detected. This new behavior results in boot-failures and head-ages. After upgrading libvirt-bin and stopping and starting a VM it looked like the qcow2 image was completely unrecoverable. All types of recovery tools were not able to recover most of the data, only some snippets. Converting the qcow2 to RAW worked and it booted directly. So there was nothing wrong with the qcow2 image. When I checked the kvm-process with ps I found type=raw defined for the qcow2 image. Snippet form virsh dumpxml someVM before: disk type='file' device='disk' driver name='qemu' cache='writethrough'/ source file='/etc/libvirt/qemu/disks/somediskimage.qcow2'/ target dev='vda' bus='virtio'/ /disk Snippet form virsh dumpxml someVM now: disk type='file' device='disk' driver name='qemu' type='raw' cache='writethrough'/ source file='/etc/libvirt/qemu/disks/somediskimage.qcow2'/ target dev='vda' bus='virtio'/ /disk If a file (qcow2 or raw is used) detecting the type of image is very easy: r...@kvm:# file disk0.qcow2 disk0.qcow2: Qemu Image, Format: Qcow , Version: 2 r...@kvm:# qemu-img info disk0.qcow2 image: disk0.qcow2 file format: qcow2 virtual size: 10G (10737418240 bytes) disk size: 8.0G cluster_size: 4096 Maybe it's better to try to detect the type first, and if that fails use RAW as default (for blockdevices). ** Affects: libvirt (Ubuntu) Importance: Undecided Status: New ** Tags: libvirt-bin qcow2 raw virsh -- Disk image type defaults to raw since 0.7.5-5ubuntu27.5 https://bugs.launchpad.net/bugs/667986 You received this bug notification because you are a member of Ubuntu Server Team, which is subscribed to libvirt in ubuntu. -- 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
[Bug 667986] [NEW] Disk image type defaults to raw since 0.7.5-5ubuntu27.5
Public bug reported: Ubuntu 10.04.1 LTS libvirt-bin 0.7.5-5ubuntu27.6 Since 0.7.5-5ubuntu27.5 (http://www.ubuntuupdates.org/packages/show/253540) the default type of diskimages is RAW. Before this version the diskimage type was automatically detected. This new behavior results in boot-failures and head-ages. After upgrading libvirt-bin and stopping and starting a VM it looked like the qcow2 image was completely unrecoverable. All types of recovery tools were not able to recover most of the data, only some snippets. Converting the qcow2 to RAW worked and it booted directly. So there was nothing wrong with the qcow2 image. When I checked the kvm-process with ps I found type=raw defined for the qcow2 image. Snippet form virsh dumpxml someVM before: disk type='file' device='disk' driver name='qemu' cache='writethrough'/ source file='/etc/libvirt/qemu/disks/somediskimage.qcow2'/ target dev='vda' bus='virtio'/ /disk Snippet form virsh dumpxml someVM now: disk type='file' device='disk' driver name='qemu' type='raw' cache='writethrough'/ source file='/etc/libvirt/qemu/disks/somediskimage.qcow2'/ target dev='vda' bus='virtio'/ /disk If a file (qcow2 or raw is used) detecting the type of image is very easy: r...@kvm:# file disk0.qcow2 disk0.qcow2: Qemu Image, Format: Qcow , Version: 2 r...@kvm:# qemu-img info disk0.qcow2 image: disk0.qcow2 file format: qcow2 virtual size: 10G (10737418240 bytes) disk size: 8.0G cluster_size: 4096 Maybe it's better to try to detect the type first, and if that fails use RAW as default (for blockdevices). ** Affects: libvirt (Ubuntu) Importance: Undecided Status: New ** Tags: libvirt-bin qcow2 raw virsh -- Disk image type defaults to raw since 0.7.5-5ubuntu27.5 https://bugs.launchpad.net/bugs/667986 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
