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Bug 2173584 - [Machines] "No more available PCI slots" is shown when adding watchdog to a running vm
Summary: [Machines] "No more available PCI slots" is shown when adding watchdog to a r...
Keywords:
Status: CLOSED ERRATA
Alias: None
Product: Red Hat Enterprise Linux 9
Classification: Red Hat
Component: cockpit-machines
Version: 9.2
Hardware: Unspecified
OS: Unspecified
unspecified
high
Target Milestone: rc
: 9.3
Assignee: Nobody
QA Contact: Xianghua Chen
Daniel Vozenilek
URL:
Whiteboard:
Depends On:
Blocks:
TreeView+ depends on / blocked
 
Reported: 2023-02-27 10:15 UTC by Xianghua Chen
Modified: 2024-03-08 04:25 UTC (History)
10 users (show)

Fixed In Version: 290
Doc Type: Bug Fix
Doc Text:
.Hot plugging a Watchdog card to a virtual machine no longer fails Previously, if no PCI slots were available, adding a Watchdog card to a running virtual machine (VM) failed with the following error: ---- Failed to configure watchdog ERROR Error attempting device hotplug: internal error: No more available PCI slots ---- With this update, the problem has been fixed and adding a Watchdog card to a running VM now works as expected.
Clone Of:
Environment:
Last Closed: 2023-11-07 08:24:46 UTC
Type: Bug
Target Upstream Version:
Embargoed:

Attachments (Terms of Use)


Links
System ID Private Priority Status Summary Last Updated
Red Hat Issue Tracker RHELPLAN-149916 0 None None None 2023-02-27 10:18:33 UTC
Red Hat Product Errata RHBA-2023:6336 0 None None None 2023-11-07 08:24:59 UTC

Description Xianghua Chen 2023-02-27 10:15:53 UTC 
Description of problem:
[Machines] "No more available PCI slots" is shown when adding watchdog to a running vm
 
Packages:
cockpit-machines-284-1.el9.noarch
cockpit-286-1.el9.x86_64
libvirt-dbus-1.4.1-5.el9.x86_64
libvirt-daemon-9.0.0-7.el9.x86_64
How reproducible:
100%

Steps:
1. Prepare a running VM (Cirros, Fedora, all ok)
2. Enter VM details page, Click "Add" after watchdog in Overview tab
3. On "Add watchdog device type" , choose "Reset", click Add
Failed to configure watchdog
ERROR Error attempting device hotplug: internal error: No more available PCI slots


There is a workaround for above issue, add "pcie-pci-bridge" controller to the xml:
# virsh edit $vm
<controller type='pci' index='17' model='pcie-to-pci-bridge'>
      <model name='pcie-pci-bridge'/>
 </controller>
Then shutdown the vm, run it again, then repeat step2-3, the watchdog can be attached now. 
Check the xml , you can see:
# virsh dumpxml cirros| grep -iA 1 watchdog
    <watchdog model='i6300esb' action='reset'>
      <alias name='watchdog0'/>
      <address type='pci' domain='0x0000' bus='0x0f' slot='0x01' function='0x0'/>
    </watchdog>

Actual results:
See step 3. 

Expected results:
It should attach successful in step 3 without any extra step working on the xml.


Additional info:
As this bug will absolutely encounterd by customer, please evaluate whether we should get excetpin+ for it, if not, we should at least mark this problem in release document and provide the workaround by editing xml, please also comment your opinion, thanks.
Comment 3 Martin Pitt 2023-04-27 12:17:58 UTC 
https://github.com/cockpit-project/cockpit-machines/pull/986
Comment 10 Martin Pitt 2023-05-17 06:57:17 UTC 
Chen, thanks for pointing out! Done. (Meh, why is the automation so unreliable..)
Comment 14 Xianghua Chen 2023-05-22 03:43:24 UTC 
Verified with Packages:
cockpit-machines-290-1.el9.noarch
cockpit-292-1.el9.x86_64
libvirt-dbus-1.4.1-5.el9.x86_64
libvirt-daemon-9.0.0-10.1.el9_2.x86_64

Steps:
1. Prepare a running VM (Cirros, Fedora, all ok)
2. Enter VM details page, Click "Add" after watchdog in Overview tab
3. On "Add watchdog device type" , choose "Reset", click Add

It's successfully added to the vm. So verified.
Comment 20 Xianghua Chen 2023-10-24 03:04:58 UTC 
Hi Pashah, I think we can remove this known issue from RHEL8.9&RHEL9.3 release note now since they are fixed now. Thank you.
Comment 25 errata-xmlrpc 2023-11-07 08:24:46 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-2023:6336
Comment 27 Red Hat Bugzilla 2024-03-08 04:25:24 UTC 
The needinfo request[s] on this closed bug have been removed as they have been unresolved for 120 days
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