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Bug 1969354 - Failed to start ovmf guest for the second time
Summary: Failed to start ovmf guest for the second time
Keywords:
Status: CLOSED CURRENTRELEASE
Alias: None
Product: Red Hat Enterprise Linux 9
Classification: Red Hat
Component: libvirt
Version: 9.0
Hardware: Unspecified
OS: Unspecified
high
high
Target Milestone: beta
: ---
Assignee: Michal Privoznik
QA Contact: Meina Li
URL:
Whiteboard:
Depends On: 1969347
Blocks:
TreeView+ depends on / blocked
 
Reported: 2021-06-08 09:49 UTC by Meina Li
Modified: 2021-12-07 22:01 UTC (History)
8 users (show)

Fixed In Version: libvirt-7.5.0-1.el9
Doc Type: If docs needed, set a value
Doc Text:
Clone Of: 1969347
Environment:
Last Closed: 2021-12-07 21:57:54 UTC
Type: Bug
Target Upstream Version: 7.5.0
Embargoed:

Attachments (Terms of Use)

Description Meina Li 2021-06-08 09:49:16 UTC 
+++ This bug was initially created as a clone of Bug #1969347 +++

Description of problem:
Failed to start ovmf guest for the second time

Version-Release number of selected component (if applicable):
libvirt-7.4.0-1.el9.x86_64
qemu-kvm-6.0.0-3.el9.x86_64

How reproducible:
100%

1. Start a ovmf guest with the following xml:
...

  <os>
    <type arch='x86_64' machine='pc-q35-rhel8.4.0'>hvm</type>
    <loader readonly='yes' secure='yes' type='pflash'>/usr/share/edk2/ovmf/OVMF_CODE.secboot.fd</loader>
    <nvram>/var/lib/libvirt/qemu/nvram/avocado-vt-vm1_VARS.fd</nvram>
    <boot dev='hd'/>
  </os>
...
# virsh start avocado-vt-vm1 
Domain 'avocado-vt-vm1' started
# getfattr -n trusted.libvirt.security.ref_selinux /var/lib/libvirt/qemu/nvram/avocado-vt-vm1_VARS.fd
getfattr: Removing leading '/' from absolute path names
# file: var/lib/libvirt/qemu/nvram/avocado-vt-vm1_VARS.fd
trusted.libvirt.security.ref_selinux="2"

2. Destroy the guest and start again.
# virsh destroy avocado-vt-vm1 
Domain 'avocado-vt-vm1' destroyed
# getfattr -n trusted.libvirt.security.ref_selinux /var/lib/libvirt/qemu/nvram/avocado-vt-vm1_VARS.fd
getfattr: Removing leading '/' from absolute path names
# file: var/lib/libvirt/qemu/nvram/avocado-vt-vm1_VARS.fd
trusted.libvirt.security.ref_selinux="1"

# virsh start avocado-vt-vm1 
error: Failed to start domain 'avocado-vt-vm1'
error: Requested operation is not valid: Setting different SELinux label on /var/lib/libvirt/qemu/nvram/avocado-vt-vm1_VARS.fd which is already in use
# getfattr -n trusted.libvirt.security.ref_selinux /var/lib/libvirt/qemu/nvram/avocado-vt-vm1_VARS.fd
getfattr: Removing leading '/' from absolute path names
# file: var/lib/libvirt/qemu/nvram/avocado-vt-vm1_VARS.fd
trusted.libvirt.security.ref_selinux="1"

Actual results:
Can't start the guest for the second time

Expected results:
Can start the guest

Additional info:
Comment 1 Michal Privoznik 2021-06-09 15:20:47 UTC 
Patch posted upstream:

https://listman.redhat.com/archives/libvir-list/2021-June/msg00249.html
Comment 2 Michal Privoznik 2021-06-17 10:33:03 UTC 
Merged upstream:

fb1289c155 qemu: Don't set NVRAM label when creating it

v7.4.0-191-gfb1289c155
Comment 5 Meina Li 2021-06-30 09:26:26 UTC 
Verified:test on:
libvirt-7.0.0-4.fc34.x86_64
qemu-kvm-5.2.0-8.fc34.x86_64
Comment 9 Meina Li 2021-07-21 03:08:21 UTC 
Verified Version:
libvirt-7.5.0-1.el9.x86_64
qemu-kvm-6.0.0-9.el9.x86_64

Verified Steps:
1. Start a ovmf guest with the following os xml and rhel9 image:
...
  <os>
    <type arch='x86_64' machine='pc-q35-rhel8.5.0'>hvm</type>
    <loader readonly='yes' type='pflash'>/usr/share/edk2/ovmf/OVMF_CODE.secboot.fd</loader>
    <nvram template='/usr/share/edk2/ovmf/OVMF_VARS.fd'>/var/lib/libvirt/qemu/nvram/lmn_VARS.fd</nvram>
    <boot dev='hd'/>
  </os>
...
# virsh start lmn
Domain 'lmn' started
# virsh console lmn
Connected to domain 'lmn'
Escape character is ^] (Ctrl + ])

localhost login: root
Password: 
[root@localhost ~]# 

2. Destroy the guest and start the guest again.
# virsh destroy lmn
Domain 'lmn' destroyed
# virsh start lmn
Domain 'lmn' started

3. Check the boot of the guest.
# virsh console lmn
Connected to domain 'lmn'
Escape character is ^] (Ctrl + ])

localhost login: root
Password: 
[root@localhost ~]# 

4. Start a guest with the following os xml and an enrolled image
...
  <os firmware='efi'>
    <type arch='x86_64' machine='pc-q35-rhel8.5.0'>hvm</type>
    <boot dev='hd'/>
  </os>
...
# rm -rf /var/lib/libvirt/qemu/nvram/lmn_VARS.fd
# virsh start lmn
Domain 'lmn' started
# virsh console lmn
Connected to domain 'lmn'
Escape character is ^] (Ctrl + ])

localhost login: root
Password: 
[root@localhost ~]# 

5. Repeat the step 2-3.

All the test results are expected.
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