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Bug 2030948

Summary: [Machines] The transient vm is changed to Persistent after deleting a Network Interface
Product: Red Hat Enterprise Linux 9 Reporter: Xianghua Chen <xchen>
Component: cockpit-machinesAssignee: Katerina Koukiou <kkoukiou>
Status: CLOSED ERRATA QA Contact: Xianghua Chen <xchen>
Severity: unspecified Docs Contact:
Priority: unspecified    
Version: 9.0CC: jvanderwaa, mpitt, wshi, ymao, yunyang
Target Milestone: rcKeywords: Triaged
Target Release: 9.2Flags: pm-rhel: mirror+
Hardware: Unspecified   
OS: Unspecified   
Whiteboard:
Fixed In Version: cockpit-machines-283-1.el9 Doc Type: If docs needed, set a value
Doc Text:
Story Points: ---
Clone Of: Environment:
Last Closed: 2023-05-09 07:34:03 UTC Type: Bug
Regression: --- Mount Type: ---
Documentation: --- CRM:
Verified Versions: Category: ---
oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
Cloudforms Team: --- Target Upstream Version:
Embargoed:

Description Xianghua Chen 2021-12-10 03:50:54 UTC 
Description of problem:[Machines] The transient vm is changed to Persistent after deleting a Network Interface

Version-Release number of selected component (if applicable):cockpit-machines-256-1.el9.noarchcockpit-258-1.el9.x86_64libvirt-dbus-1.4.1-5.el9.x86_64

How reproducible:
100%
Steps to Reproduce:1. Create a transient VM by:# virsh create CirrOS.xml --validate
# cat CirrOS.xml
<domain type='kvm'>
  <name>CirrOS</name>
  <memory unit='KiB'>1048576</memory>
  <currentMemory unit='KiB'>1048576</currentMemory>
  <vcpu placement='static'>2</vcpu>
  <os>
    <type arch='x86_64'>hvm</type>
    <boot dev='hd'/>
  </os>
  <features>
    <acpi/>
    <apic/>
    <vmport state='off'/>
  </features>
  <devices>
    <emulator>/usr/libexec/qemu-kvm</emulator>
    <disk type='file' device='disk'>
      <driver name='qemu' type='qcow2'/>
      <source file='/var/lib/libvirt/images/cirros.qcow2' index='1'/>
      <target dev='vda' bus='virtio'/>
    </disk>
    <interface type='network'>
      <source network='default' bridge='virbr0'/>
    </interface>
    <graphics type='vnc' port='5901' autoport='yes' listen='127.0.0.1'>
      <listen type='address' address='127.0.0.1'/>
    </graphics>
  </devices>
</domain>
tips: make sure there is a cirros.qcow in /var/lib/libvirt/images/ 
2. It's transient and the Persistent is no:# virsh dominfo CirrOS
Id:             7
Name:           CirrOS
UUID:           bb21f155-5449-4438-8df2-a0c5d6fed987
OS Type:        hvm
State:          running
CPU(s):         2
CPU time:       2.7s
Max memory:     1048576 KiB
Used memory:    1048576 KiB
Persistent:     no
Autostart:      disable
Managed save:   no
Security model: selinux
Security DOI:   0
Security label: system_u:system_r:svirt_t:s0:c28,c597 (enforcing)

3. Enter the VM page, add a Network interface and then delete it.4. The vm is persistent now:# virsh dominfo CirrOS
Id:             8
Name:           CirrOS
UUID:           f9e77097-0c39-4908-8162-b6913e47a97c
OS Type:        hvm
State:          running
CPU(s):         2
CPU time:       2.8s
Max memory:     1048576 KiB
Used memory:    1048576 KiB
Persistent:     yes
Autostart:      disable
Managed save:   no
Security model: selinux
Security DOI:   0
Security label: system_u:system_r:svirt_t:s0:c279,c987 (enforcing)


Actual results:As shown in step 4.

Expected results:The vm should not be changed to persistent in step 4. 
Additional info:I tried virsh with following steps , can not reproduce it:1. Create a transient vm same as above2. Add network interface:# virsh attach-interface CirrOS --type bridge --source virbr0
Interface attached successfully
3. Delete the network interface:# virsh detach-interface CirrOS  --type bridge --mac 52:54:00:eb:71:f2
Interface detached successfully
4. The Persistent is always no in 'virsh dominfo CirrOS' before or after step2&3
Comment 1 Katerina Koukiou 2023-01-25 18:25:50 UTC 
https://github.com/cockpit-project/cockpit-machines/pull/925
Comment 7 Xianghua Chen 2023-02-16 03:28:12 UTC 
Verified with packages:
cockpit-machines-283-1.el9.noarch
cockpit-285-1.el9.x86_64
libvirt-dbus-1.4.1-5.el9.x86_64
libvirt-daemon-9.0.0-3.el9.x86_64

Steps:
1. Create a transient VM by:
# virsh create CirrOS.xml --validate
# cat CirrOS.xml
<domain type='kvm'>
  <name>CirrOS</name>
  <memory unit='KiB'>1048576</memory>
  <currentMemory unit='KiB'>1048576</currentMemory>
  <vcpu placement='static'>2</vcpu>
  <os>
    <type arch='x86_64'>hvm</type>
    <boot dev='hd'/>
  </os>
  <features>
    <acpi/>
    <apic/>
    <vmport state='off'/>
  </features>
  <devices>
    <emulator>/usr/libexec/qemu-kvm</emulator>
    <disk type='file' device='disk'>
      <driver name='qemu' type='qcow2'/>
      <source file='/var/lib/libvirt/images/cirros.qcow2' index='1'/>
      <target dev='vda' bus='virtio'/>
    </disk>
    <interface type='network'>
      <source network='default' bridge='virbr0'/>
    </interface>
    <graphics type='vnc' port='5901' autoport='yes' listen='127.0.0.1'>
      <listen type='address' address='127.0.0.1'/>
    </graphics>
  </devices>
</domain>
tips: make sure there is a cirros.qcow in /var/lib/libvirt/images/ 
2. It's transient and the Persistent is no:
# virsh dominfo CirrOS
Id:             1
Name:           CirrOS
UUID:           c8785042-9786-42a2-bc9a-7bbe576d9b4d
OS Type:        hvm
State:          running
CPU(s):         2
CPU time:       5.3s
Max memory:     1048576 KiB
Used memory:    1048576 KiB
Persistent:     no
Autostart:      disable
Managed save:   no
Security model: selinux
Security DOI:   0
Security label: system_u:system_r:svirt_t:s0:c223,c435 (enforcing)
Messages:       tainted: use of deprecated configuration settings
                deprecated configuration: machine type 'pc-i440fx-rhel7.6.0'
                deprecated configuration: CPU model 'qemu64'

3. Enter the VM page, add a Network interface and then delete it.
4.  It's still transient and the Persistent is no
# virsh dominfo CirrOS
Id:             1
Name:           CirrOS
UUID:           c8785042-9786-42a2-bc9a-7bbe576d9b4d
OS Type:        hvm
State:          running
CPU(s):         2
CPU time:       5.7s
Max memory:     1048576 KiB
Used memory:    1048576 KiB
Persistent:     no
Autostart:      disable
Managed save:   no
Security model: selinux
Security DOI:   0
Security label: system_u:system_r:svirt_t:s0:c223,c435 (enforcing)
Messages:       tainted: use of deprecated configuration settings
                deprecated configuration: machine type 'pc-i440fx-rhel7.6.0'
                deprecated configuration: CPU model 'qemu64'

So verified.
Comment 9 errata-xmlrpc 2023-05-09 07:34:03 UTC 
Since the problem described in this bug report should be
resolved in a recent advisory, it has been closed with a
resolution of ERRATA.

For information on the advisory (cockpit-machines bug fix and enhancement update), and where to find the updated
files, follow the link below.

If the solution does not work for you, open a new bug report.

https://access.redhat.com/errata/RHBA-2023:2211