Public bug reported: I'm trying to use the option: -snapshot write to temporary files instead of disk image files
How to reproduce? See following log: 2013-06-20 02:13:18.532+0000: starting up LC_ALL=C PATH=/usr/local/sbin:/usr/local/bin:/usr/bin:/usr/sbin:/sbin:/bin QEMU_AUDIO_DRV=none /usr/bin/qemu-system-x86_64 -S -M pc-1.0 -no-kvm -m 512 -smp 1,sockets=1,cores=1,threads=1 -name instance-0000002b -uuid 2d600758-ae56-48b8-bd4d-999744a038e4 -nodefconfig -nodefaults -chardev socket,id=charmonitor,path=/var/lib/libvirt/qemu/instance-0000002b.monitor,server,nowait -mon chardev=charmonitor,id=monitor,mode=control -rtc base=utc -no-shutdown -kernel /opt/stack/data/nova/instances/instance-0000002b/kernel -initrd /opt/stack/data/nova/instances/instance-0000002b/ramdisk -append root=/dev/vda console=ttyS0 -drive file=/opt/stack/data/nova/instances/instance-0000002b/disk,if=none,id=drive-virtio-disk0,format=qcow2,cache=none -device virtio-blk-pci,bus=pci.0,addr=0x4,drive=drive-virtio-disk0,id=virtio-disk0 -drive if=none,media=cdrom,id=drive-ide0-1-0,readonly=on,format=raw -device ide-drive,bus=ide.1,unit=0,drive=drive-ide0-1-0,id=ide0-1-0 -netdev tap,fd=19,id=hostnet0 -device rtl8139,netdev=hostnet0,id=net0,mac=fa:16:3e:03:ab:18,bus=pci.0,addr=0x3 -chardev file,id=charserial0,path=/opt/stack/data/nova/instances/instance-0000002b/console.log -device isa-serial,chardev=charserial0,id=serial0 -chardev pty,id=charserial1 -device isa-serial,chardev=charserial1,id=serial1 -usb -device usb-tablet,id=input0 -vnc 127.0.0.1:26868 -k en-us -vga cirrus -device virtio-balloon-pci,id=balloon0,bus=pci.0,addr=0x5 -snapshot Domain id=1 is tainted: custom-argv char device redirected to /dev/pts/18 qemu-system-x86_64: -drive file=/opt/stack/data/nova/instances/instance-0000002b/disk,if=none,id=drive-virtio-disk0,format=qcow2,cache=none: could not open disk image /opt/stack/data/nova/instances/instance-0000002b/disk: Permission denied 2013-06-20 02:13:18.683+0000: shutting down Version: QEMU emulator version 1.0 (qemu-kvm-1.0), Copyright (c) 2003-2008 Fabrice Bellard Related info: The disk is a qcow2 image with a backing file. Both the backing file and the disk are cmodded with 777. This is a log from dmesg related to apparmor: [ 236.531287] type=1400 audit(1371694399.156:17): apparmor="STATUS" operation="profile_remove" name="libvirt-2d600758-ae56-48b8-bd4d-999744a038e4" pid=4201 comm="apparmor_parser" libvirt.xml that I'm using: <domain type="qemu" xmlns:qemu='http://libvirt.org/schemas/domain/qemu/1.0'> <uuid>2d600758-ae56-48b8-bd4d-999744a038e4</uuid> <name>instance-0000002b</name> <memory>524288</memory> <vcpu>1</vcpu> <os> <type>hvm</type> <kernel>/opt/stack/data/nova/instances/instance-0000002b/kernel</kernel> <initrd>/opt/stack/data/nova/instances/instance-0000002b/ramdisk</initrd> <cmdline>root=/dev/vda console=ttyS0</cmdline> </os> <features> <acpi/> <apic/> </features> <clock offset="utc"/> <devices> <disk type="file" device="disk"> <driver name="qemu" type="qcow2" cache="none"/> <source file="/opt/stack/data/nova/instances/instance-0000002b/disk"/> <target bus="virtio" dev="vda"/> </disk> <disk type="block" device="cdrom"> <driver name="qemu" type="raw"/> <target tray="open" dev="hdc"/> <readonly/> </disk> <interface type="bridge"> <mac address="fa:16:3e:03:ab:18"/> <source bridge="br100"/> <filterref filter="nova-instance-instance-0000002b-fa163e03ab18"> <parameter name="IP" value="10.0.0.3"/> <parameter name="DHCPSERVER" value="10.0.0.1"/> <parameter name="PROJNET" value="10.0.0.0"/> <parameter name="PROJMASK" value="255.255.255.0"/> </filterref> </interface> <serial type="file"> <source path="/opt/stack/data/nova/instances/instance-0000002b/console.log"/> </serial> <serial type="pty"/> <input type="tablet" bus="usb"/> <graphics type="vnc" autoport="no" port="32768" keymap="en-us" listen="127.0.0.1"/> </devices> <qemu:commandline> <qemu:arg value='-snapshot'/> </qemu:commandline> </domain> ** Affects: qemu Importance: Undecided Status: New -- You received this bug notification because you are a member of qemu- devel-ml, which is subscribed to QEMU. https://bugs.launchpad.net/bugs/1192780 Title: qemu-kvm with snapshot option always fails with Permission denied Could not open disk image Status in QEMU: New Bug description: I'm trying to use the option: -snapshot write to temporary files instead of disk image files How to reproduce? See following log: 2013-06-20 02:13:18.532+0000: starting up LC_ALL=C PATH=/usr/local/sbin:/usr/local/bin:/usr/bin:/usr/sbin:/sbin:/bin QEMU_AUDIO_DRV=none /usr/bin/qemu-system-x86_64 -S -M pc-1.0 -no-kvm -m 512 -smp 1,sockets=1,cores=1,threads=1 -name instance-0000002b -uuid 2d600758-ae56-48b8-bd4d-999744a038e4 -nodefconfig -nodefaults -chardev socket,id=charmonitor,path=/var/lib/libvirt/qemu/instance-0000002b.monitor,server,nowait -mon chardev=charmonitor,id=monitor,mode=control -rtc base=utc -no-shutdown -kernel /opt/stack/data/nova/instances/instance-0000002b/kernel -initrd /opt/stack/data/nova/instances/instance-0000002b/ramdisk -append root=/dev/vda console=ttyS0 -drive file=/opt/stack/data/nova/instances/instance-0000002b/disk,if=none,id=drive-virtio-disk0,format=qcow2,cache=none -device virtio-blk-pci,bus=pci.0,addr=0x4,drive=drive-virtio-disk0,id=virtio-disk0 -drive if=none,media=cdrom,id=drive-ide0-1-0,readonly=on,format=raw -device ide-drive,bus=ide.1,unit=0,drive=drive-ide0-1-0,id=ide0-1-0 -netdev tap,fd=19,id=hostnet0 -device rtl8139,netdev=hostnet0,id=net0,mac=fa:16:3e:03:ab:18,bus=pci.0,addr=0x3 -chardev file,id=charserial0,path=/opt/stack/data/nova/instances/instance-0000002b/console.log -device isa-serial,chardev=charserial0,id=serial0 -chardev pty,id=charserial1 -device isa-serial,chardev=charserial1,id=serial1 -usb -device usb-tablet,id=input0 -vnc 127.0.0.1:26868 -k en-us -vga cirrus -device virtio-balloon-pci,id=balloon0,bus=pci.0,addr=0x5 -snapshot Domain id=1 is tainted: custom-argv char device redirected to /dev/pts/18 qemu-system-x86_64: -drive file=/opt/stack/data/nova/instances/instance-0000002b/disk,if=none,id=drive-virtio-disk0,format=qcow2,cache=none: could not open disk image /opt/stack/data/nova/instances/instance-0000002b/disk: Permission denied 2013-06-20 02:13:18.683+0000: shutting down Version: QEMU emulator version 1.0 (qemu-kvm-1.0), Copyright (c) 2003-2008 Fabrice Bellard Related info: The disk is a qcow2 image with a backing file. Both the backing file and the disk are cmodded with 777. This is a log from dmesg related to apparmor: [ 236.531287] type=1400 audit(1371694399.156:17): apparmor="STATUS" operation="profile_remove" name="libvirt-2d600758-ae56-48b8-bd4d-999744a038e4" pid=4201 comm="apparmor_parser" libvirt.xml that I'm using: <domain type="qemu" xmlns:qemu='http://libvirt.org/schemas/domain/qemu/1.0'> <uuid>2d600758-ae56-48b8-bd4d-999744a038e4</uuid> <name>instance-0000002b</name> <memory>524288</memory> <vcpu>1</vcpu> <os> <type>hvm</type> <kernel>/opt/stack/data/nova/instances/instance-0000002b/kernel</kernel> <initrd>/opt/stack/data/nova/instances/instance-0000002b/ramdisk</initrd> <cmdline>root=/dev/vda console=ttyS0</cmdline> </os> <features> <acpi/> <apic/> </features> <clock offset="utc"/> <devices> <disk type="file" device="disk"> <driver name="qemu" type="qcow2" cache="none"/> <source file="/opt/stack/data/nova/instances/instance-0000002b/disk"/> <target bus="virtio" dev="vda"/> </disk> <disk type="block" device="cdrom"> <driver name="qemu" type="raw"/> <target tray="open" dev="hdc"/> <readonly/> </disk> <interface type="bridge"> <mac address="fa:16:3e:03:ab:18"/> <source bridge="br100"/> <filterref filter="nova-instance-instance-0000002b-fa163e03ab18"> <parameter name="IP" value="10.0.0.3"/> <parameter name="DHCPSERVER" value="10.0.0.1"/> <parameter name="PROJNET" value="10.0.0.0"/> <parameter name="PROJMASK" value="255.255.255.0"/> </filterref> </interface> <serial type="file"> <source path="/opt/stack/data/nova/instances/instance-0000002b/console.log"/> </serial> <serial type="pty"/> <input type="tablet" bus="usb"/> <graphics type="vnc" autoport="no" port="32768" keymap="en-us" listen="127.0.0.1"/> </devices> <qemu:commandline> <qemu:arg value='-snapshot'/> </qemu:commandline> </domain> To manage notifications about this bug go to: https://bugs.launchpad.net/qemu/+bug/1192780/+subscriptions
