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[Bug 1552777] Re: resizing from flavor with swap to one without swap puts instance into Error status

To: yahoo-eng-team@xxxxxxxxxxxxxxxxxxx
From: Matt Riedemann <mriedem.os@xxxxxxxxx>
Date: Thu, 30 May 2019 15:18:44 -0000
Reply-to: Bug 1552777 <1552777@xxxxxxxxxxxxxxxxxx>
Sender: bounces@xxxxxxxxxxxxx
Regarding comment #2, someone said they still have the problem in Queens
(maybe using a different libvirt / qemu version if that matters?):

Maxence Sartiaux
Apr 9, 2018

Patch Set 6:

I tried in Queens, still have the error, libvirt try to open the swap
file

** Changed in: nova
     Assignee: Kam Nasim (knasim-wrs) => (unassigned)

** Changed in: nova
       Status: Fix Released => New

** Changed in: nova
   Importance: Medium => Undecided

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https://bugs.launchpad.net/bugs/1552777

Title:
  resizing from flavor with swap to one without swap puts instance into
  Error status

Status in OpenStack Compute (nova):
  New

Bug description:
  In a single-node devstack (current trunk, nova commit 6e1051b7), if
  you boot an instance with a flavor that has nonzero swap and then
  resize to a flavor with zero swap it causes an exception.  It seems
  that we somehow neglect to remove the swap file from the instance.

   2016-03-03 10:02:41.415 ERROR nova.virt.libvirt.guest [req-dadee404-81c4-46de-9fd5-58de747b3b78 admin alt_demo] Error launching a defined domain with XML: <domain type='kvm'>
    <name>instance-00000001</name>
    <uuid>54711b56-fa72-4eac-a5d3-aa29ed128098</uuid>
    <metadata>
      <nova:instance xmlns:nova="http://openstack.org/xmlns/libvirt/nova/1.0";>
        <nova:package version="13.0.0"/>
        <nova:name>asdf</nova:name>
        <nova:creationTime>2016-03-03 16:02:39</nova:creationTime>
        <nova:flavor name="m1.tiny">
          <nova:memory>512</nova:memory>
          <nova:disk>1</nova:disk>
          <nova:swap>0</nova:swap>
          <nova:ephemeral>0</nova:ephemeral>
          <nova:vcpus>1</nova:vcpus>
        </nova:flavor>
        <nova:owner>
          <nova:user uuid="96e62e9067124d79aefb0234143287eb">admin</nova:user>
          <nova:project uuid="376f545938224be4ae76f283144dc31d">alt_demo</nova:project>
        </nova:owner>
        <nova:root type="image" uuid="d30c2fce-f882-4720-8367-e416cc15a32e"/>
      </nova:instance>
    </metadata>
    <memory unit='KiB'>524288</memory>
    <currentMemory unit='KiB'>524288</currentMemory>
    <vcpu placement='static'>1</vcpu>
    <cputune>
      <shares>1024</shares>
    </cputune>
    <sysinfo type='smbios'>
      <system>
        <entry name='manufacturer'>OpenStack Foundation</entry>
        <entry name='product'>OpenStack Nova</entry>
        <entry name='version'>13.0.0</entry>
        <entry name='serial'>03000200-0400-0500-0006-000700080009</entry>
        <entry name='uuid'>54711b56-fa72-4eac-a5d3-aa29ed128098</entry>
        <entry name='family'>Virtual Machine</entry>
      </system>
    </sysinfo>
    <os>
      <type arch='x86_64' machine='pc-i440fx-utopic'>hvm</type>
      <kernel>/opt/stack/data/nova/instances/54711b56-fa72-4eac-a5d3-aa29ed128098/kernel</kernel>
      <initrd>/opt/stack/data/nova/instances/54711b56-fa72-4eac-a5d3-aa29ed128098/ramdisk</initrd>
      <cmdline>root=/dev/vda console=tty0 console=ttyS0</cmdline>
      <boot dev='hd'/>
      <smbios mode='sysinfo'/>
    </os>
    <features>
      <acpi/>
      <apic/>
    </features>
    <cpu>
      <topology sockets='1' cores='1' threads='1'/>
    </cpu>
    <clock offset='utc'>
      <timer name='pit' tickpolicy='delay'/>
      <timer name='rtc' tickpolicy='catchup'/>
      <timer name='hpet' present='no'/>
    </clock>
    <on_poweroff>destroy</on_poweroff>
    <on_reboot>restart</on_reboot>
    <on_crash>destroy</on_crash>
    <devices>
      <emulator>/usr/bin/kvm-spice</emulator>
      <disk type='file' device='disk'>
        <driver name='qemu' type='qcow2' cache='none'/>
        <source file='/opt/stack/data/nova/instances/54711b56-fa72-4eac-a5d3-aa29ed128098/disk'/>
        <target dev='vda' bus='virtio'/>
        <address type='pci' domain='0x0000' bus='0x00' slot='0x04' function='0x0'/>
      </disk>
      <disk type='file' device='disk'>
        <driver name='qemu' type='qcow2' cache='none'/>
        <source file='/opt/stack/data/nova/instances/54711b56-fa72-4eac-a5d3-aa29ed128098/disk.swap'/>
        <target dev='vdb' bus='virtio'/>
        <address type='pci' domain='0x0000' bus='0x00' slot='0x05' function='0x0'/>
      </disk>
      <disk type='file' device='cdrom'>
        <driver name='qemu' type='raw' cache='none'/>
        <source file='/opt/stack/data/nova/instances/54711b56-fa72-4eac-a5d3-aa29ed128098/disk.config'/>
        <target dev='hdd' bus='ide'/>
        <readonly/>
        <address type='drive' controller='0' bus='1' target='0' unit='1'/>
      </disk>
      <controller type='usb' index='0'>
        <address type='pci' domain='0x0000' bus='0x00' slot='0x01' function='0x2'/>
      </controller>
      <controller type='pci' index='0' model='pci-root'/>
      <controller type='ide' index='0'>
        <address type='pci' domain='0x0000' bus='0x00' slot='0x01' function='0x1'/>
      </controller>
      <interface type='bridge'>
        <mac address='fa:16:3e:a9:b5:c5'/>
        <source bridge='br100'/>
        <model type='virtio'/>
        <filterref filter='nova-instance-instance-00000001-fa163ea9b5c5'/>
        <address type='pci' domain='0x0000' bus='0x00' slot='0x03' function='0x0'/>
      </interface>
      <serial type='file'>
        <source path='/opt/stack/data/nova/instances/54711b56-fa72-4eac-a5d3-aa29ed128098/console.log'/>
        <target port='0'/>
      </serial>
      <serial type='pty'>
        <target port='1'/>
      </serial>
      <console type='file'>
        <source path='/opt/stack/data/nova/instances/54711b56-fa72-4eac-a5d3-aa29ed128098/console.log'/>
        <target type='serial' port='0'/>
      </console>
      <input type='mouse' bus='ps2'/>
      <input type='keyboard' bus='ps2'/>
      <graphics type='vnc' port='-1' autoport='yes' listen='127.0.0.1' keymap='en-us'>
        <listen type='address' address='127.0.0.1'/>
      </graphics>
      <video>
        <model type='cirrus' vram='16384' heads='1'/>
        <address type='pci' domain='0x0000' bus='0x00' slot='0x02' function='0x0'/>
      </video>
      <memballoon model='virtio'>
        <address type='pci' domain='0x0000' bus='0x00' slot='0x06' function='0x0'/>
        <stats period='10'/>
      </memballoon>
    </devices>
  </domain>

  2016-03-03 10:02:41.417 ERROR nova.compute.manager [req-dadee404-81c4-46de-9fd5-58de747b3b78 admin alt_demo] [instance: 54711b56-fa72-4eac-a5d3-aa29ed128098] Setting instance vm_state to ERROR
  2016-03-03 10:02:41.417 TRACE nova.compute.manager [instance: 54711b56-fa72-4eac-a5d3-aa29ed128098] Traceback (most recent call last):
  2016-03-03 10:02:41.417 TRACE nova.compute.manager [instance: 54711b56-fa72-4eac-a5d3-aa29ed128098]   File "/opt/stack/nova/nova/compute/manager.py", line 3999, in finish_resize
  2016-03-03 10:02:41.417 TRACE nova.compute.manager [instance: 54711b56-fa72-4eac-a5d3-aa29ed128098]     disk_info, image_meta)
  2016-03-03 10:02:41.417 TRACE nova.compute.manager [instance: 54711b56-fa72-4eac-a5d3-aa29ed128098]   File "/opt/stack/nova/nova/compute/manager.py", line 3964, in _finish_resize
  2016-03-03 10:02:41.417 TRACE nova.compute.manager [instance: 54711b56-fa72-4eac-a5d3-aa29ed128098]     old_instance_type)
  2016-03-03 10:02:41.417 TRACE nova.compute.manager [instance: 54711b56-fa72-4eac-a5d3-aa29ed128098]   File "/usr/local/lib/python2.7/dist-packages/oslo_utils/excutils.py", line 204, in __exit__
  2016-03-03 10:02:41.417 TRACE nova.compute.manager [instance: 54711b56-fa72-4eac-a5d3-aa29ed128098]     six.reraise(self.type_, self.value, self.tb)
  2016-03-03 10:02:41.417 TRACE nova.compute.manager [instance: 54711b56-fa72-4eac-a5d3-aa29ed128098]   File "/opt/stack/nova/nova/compute/manager.py", line 3959, in _finish_resize
  2016-03-03 10:02:41.417 TRACE nova.compute.manager [instance: 54711b56-fa72-4eac-a5d3-aa29ed128098]     block_device_info, power_on)
  2016-03-03 10:02:41.417 TRACE nova.compute.manager [instance: 54711b56-fa72-4eac-a5d3-aa29ed128098]   File "/opt/stack/nova/nova/virt/libvirt/driver.py", line 7202, in finish_migration
  2016-03-03 10:02:41.417 TRACE nova.compute.manager [instance: 54711b56-fa72-4eac-a5d3-aa29ed128098]     vifs_already_plugged=True)
  2016-03-03 10:02:41.417 TRACE nova.compute.manager [instance: 54711b56-fa72-4eac-a5d3-aa29ed128098]   File "/opt/stack/nova/nova/virt/libvirt/driver.py", line 4862, in _create_domain_and_network
  2016-03-03 10:02:41.417 TRACE nova.compute.manager [instance: 54711b56-fa72-4eac-a5d3-aa29ed128098]     xml, pause=pause, power_on=power_on)
  2016-03-03 10:02:41.417 TRACE nova.compute.manager [instance: 54711b56-fa72-4eac-a5d3-aa29ed128098]   File "/opt/stack/nova/nova/virt/libvirt/driver.py", line 4793, in _create_domain
  2016-03-03 10:02:41.417 TRACE nova.compute.manager [instance: 54711b56-fa72-4eac-a5d3-aa29ed128098]     guest.launch(pause=pause)
  2016-03-03 10:02:41.417 TRACE nova.compute.manager [instance: 54711b56-fa72-4eac-a5d3-aa29ed128098]   File "/opt/stack/nova/nova/virt/libvirt/guest.py", line 142, in launch
  2016-03-03 10:02:41.417 TRACE nova.compute.manager [instance: 54711b56-fa72-4eac-a5d3-aa29ed128098]     self._encoded_xml, errors='ignore')
  2016-03-03 10:02:41.417 TRACE nova.compute.manager [instance: 54711b56-fa72-4eac-a5d3-aa29ed128098]   File "/usr/local/lib/python2.7/dist-packages/oslo_utils/excutils.py", line 204, in __exit__
  2016-03-03 10:02:41.417 TRACE nova.compute.manager [instance: 54711b56-fa72-4eac-a5d3-aa29ed128098]     six.reraise(self.type_, self.value, self.tb)
  2016-03-03 10:02:41.417 TRACE nova.compute.manager [instance: 54711b56-fa72-4eac-a5d3-aa29ed128098]   File "/opt/stack/nova/nova/virt/libvirt/guest.py", line 137, in launch
  2016-03-03 10:02:41.417 TRACE nova.compute.manager [instance: 54711b56-fa72-4eac-a5d3-aa29ed128098]     return self._domain.createWithFlags(flags)
  2016-03-03 10:02:41.417 TRACE nova.compute.manager [instance: 54711b56-fa72-4eac-a5d3-aa29ed128098]   File "/usr/local/lib/python2.7/dist-packages/eventlet/tpool.py", line 183, in doit
  2016-03-03 10:02:41.417 TRACE nova.compute.manager [instance: 54711b56-fa72-4eac-a5d3-aa29ed128098]     result = proxy_call(self._autowrap, f, *args, **kwargs)
  2016-03-03 10:02:41.417 TRACE nova.compute.manager [instance: 54711b56-fa72-4eac-a5d3-aa29ed128098]   File "/usr/local/lib/python2.7/dist-packages/eventlet/tpool.py", line 141, in proxy_call
  2016-03-03 10:02:41.417 TRACE nova.compute.manager [instance: 54711b56-fa72-4eac-a5d3-aa29ed128098]     rv = execute(f, *args, **kwargs)
  2016-03-03 10:02:41.417 TRACE nova.compute.manager [instance: 54711b56-fa72-4eac-a5d3-aa29ed128098]   File "/usr/local/lib/python2.7/dist-packages/eventlet/tpool.py", line 122, in execute
  2016-03-03 10:02:41.417 TRACE nova.compute.manager [instance: 54711b56-fa72-4eac-a5d3-aa29ed128098]     six.reraise(c, e, tb)
  2016-03-03 10:02:41.417 TRACE nova.compute.manager [instance: 54711b56-fa72-4eac-a5d3-aa29ed128098]   File "/usr/local/lib/python2.7/dist-packages/eventlet/tpool.py", line 80, in tworker
  2016-03-03 10:02:41.417 TRACE nova.compute.manager [instance: 54711b56-fa72-4eac-a5d3-aa29ed128098]     rv = meth(*args, **kwargs)
  2016-03-03 10:02:41.417 TRACE nova.compute.manager [instance: 54711b56-fa72-4eac-a5d3-aa29ed128098]   File "/usr/local/lib/python2.7/dist-packages/libvirt.py", line 1037, in createWithFlags
  2016-03-03 10:02:41.417 TRACE nova.compute.manager [instance: 54711b56-fa72-4eac-a5d3-aa29ed128098]     if ret == -1: raise libvirtError ('virDomainCreateWithFlags() failed', dom=self)
  2016-03-03 10:02:41.417 TRACE nova.compute.manager [instance: 54711b56-fa72-4eac-a5d3-aa29ed128098] libvirtError: Cannot access storage file '/opt/stack/data/nova/instances/54711b56-fa72-4eac-a5d3-aa29ed128098/disk.swap' (as uid:109, gid:118): No such file or directory

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References

[Bug 1552777] [NEW] resizing from flavor with swap to one without swap puts instance into Error status
From: Chris Friesen, 2016-03-03