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Description of problem:
After revert to a shutdown snapshot, domain start will hang for 7-13 minute on my test. The domain I use is rhel6/6.1.
Version-Release number of selected component (if applicable):
kernel-2.6.32-125.el6.x86_64
qemu-kvm-0.12.1.2-2.153.el6.x86_64
libvirt-0.8.7-15.el6.x86_64
How reproducible:
100%
Steps to Reproduce:
1. Prepare a shutdown domain with qcow2 img
2. create a snapshot when domain is shutdown
virsh snapshot-create domain
3. start the domain
virsh start domain
4. revert domain to a shutdown snapshot
virsh snapshot-revert domain snapshot-name
5. start domain
virsh start domain
Actual results:
virsh start will hang for several minutes
Expected results:
virsh start will succeed with no hang
Additional info:
domain xml
<domain type='kvm' id='21'>
<name>vr-rhel6u1-x86_64-kvm</name>
<uuid>468d7413-1e95-a3c2-caba-834af5736659</uuid>
<memory>524288</memory>
<currentMemory>524288</currentMemory>
<vcpu>1</vcpu>
<os>
<type arch='x86_64' machine='rhel6.1.0'>hvm</type>
<boot dev='hd'/>
</os>
<features>
<acpi/>
<apic/>
<pae/>
</features>
<clock offset='utc'/>
<on_poweroff>destroy</on_poweroff>
<on_reboot>restart</on_reboot>
<on_crash>restart</on_crash>
<devices>
<emulator>/usr/libexec/qemu-kvm</emulator>
<disk type='file' device='disk'>
<driver name='qemu' type='qcow2'/>
<source file='/var/lib/libvirt/images/vr-rhel6u1-x86_64-kvm'/>
<target dev='hda' bus='ide'/>
<alias name='ide0-0-0'/>
<address type='drive' controller='0' bus='0' unit='0'/>
</disk>
<controller type='ide' index='0'>
<alias name='ide0'/>
<address type='pci' domain='0x0000' bus='0x00' slot='0x01' function='0x1'/>
</controller>
<interface type='network'>
<mac address='52:54:00:37:50:c2'/>
<source network='default'/>
<target dev='vnet2'/>
<model type='rtl8139'/>
<alias name='net0'/>
<address type='pci' domain='0x0000' bus='0x00' slot='0x03' function='0x0'/>
</interface>
<serial type='pty'>
<source path='/dev/pts/5'/>
<target port='0'/>
<alias name='serial0'/>
</serial>
<console type='pty' tty='/dev/pts/5'>
<source path='/dev/pts/5'/>
<target type='serial' port='0'/>
<alias name='serial0'/>
</console>
<input type='mouse' bus='ps2'/>
<graphics type='vnc' port='5902' autoport='yes' keymap='en-us'/>
<sound model='ac97'>
<alias name='sound0'/>
<address type='pci' domain='0x0000' bus='0x00' slot='0x04' function='0x0'/>
</sound>
<video>
<model type='cirrus' vram='9216' heads='1'/>
<alias name='video0'/>
<address type='pci' domain='0x0000' bus='0x00' slot='0x02' function='0x0'/>
</video>
<memballoon model='virtio'>
<alias name='balloon0'/>
<address type='pci' domain='0x0000' bus='0x00' slot='0x05' function='0x0'/>
</memballoon>
</devices>
<seclabel type='dynamic' model='selinux'>
<label>system_u:system_r:svirt_t:s0:c473,c587</label>
<imagelabel>system_u:object_r:svirt_image_t:s0:c473,c587</imagelabel>
</seclabel>
</domain>
Comment 1RHEL Program Management
2011-04-04 02:05:33 UTC
Since RHEL 6.1 External Beta has begun, and this bug remains
unresolved, it has been rejected as it is not proposed as
exception or blocker.
Red Hat invites you to ask your support representative to
propose this request, if appropriate and relevant, in the
next release of Red Hat Enterprise Linux.
Description of problem: After revert to a shutdown snapshot, domain start will hang for 7-13 minute on my test. The domain I use is rhel6/6.1. Version-Release number of selected component (if applicable): kernel-2.6.32-125.el6.x86_64 qemu-kvm-0.12.1.2-2.153.el6.x86_64 libvirt-0.8.7-15.el6.x86_64 How reproducible: 100% Steps to Reproduce: 1. Prepare a shutdown domain with qcow2 img 2. create a snapshot when domain is shutdown virsh snapshot-create domain 3. start the domain virsh start domain 4. revert domain to a shutdown snapshot virsh snapshot-revert domain snapshot-name 5. start domain virsh start domain Actual results: virsh start will hang for several minutes Expected results: virsh start will succeed with no hang Additional info: domain xml <domain type='kvm' id='21'> <name>vr-rhel6u1-x86_64-kvm</name> <uuid>468d7413-1e95-a3c2-caba-834af5736659</uuid> <memory>524288</memory> <currentMemory>524288</currentMemory> <vcpu>1</vcpu> <os> <type arch='x86_64' machine='rhel6.1.0'>hvm</type> <boot dev='hd'/> </os> <features> <acpi/> <apic/> <pae/> </features> <clock offset='utc'/> <on_poweroff>destroy</on_poweroff> <on_reboot>restart</on_reboot> <on_crash>restart</on_crash> <devices> <emulator>/usr/libexec/qemu-kvm</emulator> <disk type='file' device='disk'> <driver name='qemu' type='qcow2'/> <source file='/var/lib/libvirt/images/vr-rhel6u1-x86_64-kvm'/> <target dev='hda' bus='ide'/> <alias name='ide0-0-0'/> <address type='drive' controller='0' bus='0' unit='0'/> </disk> <controller type='ide' index='0'> <alias name='ide0'/> <address type='pci' domain='0x0000' bus='0x00' slot='0x01' function='0x1'/> </controller> <interface type='network'> <mac address='52:54:00:37:50:c2'/> <source network='default'/> <target dev='vnet2'/> <model type='rtl8139'/> <alias name='net0'/> <address type='pci' domain='0x0000' bus='0x00' slot='0x03' function='0x0'/> </interface> <serial type='pty'> <source path='/dev/pts/5'/> <target port='0'/> <alias name='serial0'/> </serial> <console type='pty' tty='/dev/pts/5'> <source path='/dev/pts/5'/> <target type='serial' port='0'/> <alias name='serial0'/> </console> <input type='mouse' bus='ps2'/> <graphics type='vnc' port='5902' autoport='yes' keymap='en-us'/> <sound model='ac97'> <alias name='sound0'/> <address type='pci' domain='0x0000' bus='0x00' slot='0x04' function='0x0'/> </sound> <video> <model type='cirrus' vram='9216' heads='1'/> <alias name='video0'/> <address type='pci' domain='0x0000' bus='0x00' slot='0x02' function='0x0'/> </video> <memballoon model='virtio'> <alias name='balloon0'/> <address type='pci' domain='0x0000' bus='0x00' slot='0x05' function='0x0'/> </memballoon> </devices> <seclabel type='dynamic' model='selinux'> <label>system_u:system_r:svirt_t:s0:c473,c587</label> <imagelabel>system_u:object_r:svirt_image_t:s0:c473,c587</imagelabel> </seclabel> </domain>