From 283eece679e009eb0f974112c2c3b66c7980f82a Mon Sep 17 00:00:00 2001 From: melanie witt Date: Wed, 29 Nov 2023 17:11:18 +0000 Subject: [PATCH] Lower num_pcie_ports to 12 in the nova-next job This change is being proposed in response to guest kernel panics that are happening occasionally in the nova-next CI job. In these particular cases, we see messages like the following in the guest console log dump [1]: pci 0000:00:03.6: BAR 13: no space for [io size 0x1000] pci 0000:00:03.6: BAR 13: failed to assign [io size 0x1000] which seems to indicate the guest is running out of memory to allocate to the pcie devices. This lowers num_pcie_ports to 12 from 24 in an effort to use less memory. [1] https://pastebin.com/raw/cVDem0Xr Change-Id: Ibfa65a00dd91e6c3f28fef837a7e172221f72f42 --- .zuul.yaml | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/.zuul.yaml b/.zuul.yaml index 1ad7e36969a1..472b763d6f36 100644 --- a/.zuul.yaml +++ b/.zuul.yaml @@ -411,7 +411,7 @@ libvirt: # Increase the number of PCIe ports per instance given the q35 # machine type attaches more devices by default than pc - num_pcie_ports: 24 + num_pcie_ports: 12 hw_machine_type: "x86_64=q35" # Use lower TB cache than default(1GiB), only applicable with # libvirt>=8.0.0