January 2025 - openstack-discuss - lists.openstack.org

[nova] How to gain approval for a new feature on unavailable hardware
by taketani.ryo＠fujitsu.com 08 Jan '25

08 Jan '25

To Whom It May Concern, We are considering to propose and develop a new feature on OpenStack Nova for building Arm Confidential Computing Architecture (Arm CCA)-encrypted instances. I have some questions for doing it. * While specification of Arm CCA is already open(https://developer.arm.com/documentation/den0125/0300/Overview), No Arm CCA-enabled hardware is currently available to our knowledge. Therefore, we plan to conduct testing in an internal environment. * Would a proposal for a feature utilizing publicly unavailable hardware be acceptable to OpenStack? Alternatively, in this case, what steps or preparations are required for approval? * Should the blueprint and specification be submitted simultaneously? * The specification is currently incomplete. Building Arm CCA instances requires libvirt APIs, similar to AMD SEV instances(https://blueprints.launchpad.net/nova/+spec/amd-sev-libvirt-suppo…, but specification of these are not yet determined publicly. We are considering submitting the blueprint first to inform the community of our ongoing development efforts. Regards

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Nova create vm with special ipv4 and ipv6
by Alex Song (宋文平) 07 Jan '25

07 Jan '25

Hi Nova team, does nova support create vm with special ipv4 and ipv6? As port create with ipv4 and ipv6 works by: openstack port create 111 --network 10851e96-8995-4988-b819-0514b38d7353 --fixed-ip subnet=a564ac90-3ff3-47d7-8ae5-20e2666eaa3c,ip-address=172.24.4.54 --fixed-ip subnet=afa3c858-c3d3-4784-8964-2c46840b714d,ip-address=2001:db8::183 but vm create with ipv4 and ipv6 with the cmd openstack server create --flavor 1 --image 62254c92-a579-4c8a-a2f4-f2624cef8ec1 --nic net-id=10851e96-8995-4988-b819-0514b38d7353,v4-fixed-ip=172.24.4.53,v6-fixed-ip=2001:db8::188 test raise exception: openstack server create: error: argument --nic: Invalid argument net-id=10851e96-8995-4988-b819-0514b38d7353,v4-fixed-ip=172.24.4.53,v6-fixed-ip=2001:db8::188; either 'v4-fixed-ip' or 'v6-fixed-ip' should be specified but not both. So why nova doesnot support?

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[ops][nova] How to make sure that on a hypervisor there is room for a VM with a specific flavor
by Massimo Sgaravatto 07 Jan '25

07 Jan '25

Dear all I have the following use case: I defined a flavor F for VMS with 10 VCPUs, 20 GB of RAM, 30 GB of root disk, 1 GPU XYZ. I use PCI passthrough to manage GPUs. I have only a XYZ GPU on my cluster (on a H hypervisor), so a VM using this flavor F must be "placed" to the compute node H (and this is not a problem: I know how to do that). H is very large: it has a lot of RAM and cores, so it can host other VMs that do not use GPUs. How can I make it so that VMs without GPU can go on H, but there must be room for a VM with flavor F (if it doesn't already exist)? Thanks, and happy new year ! Cheers, Massimo

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[openstack][octavia]Resize a Load Balancer
by Nguyễn Hữu Khôi 07 Jan '25

07 Jan '25

Hello. I see that patch https://review.opendev.org/c/openstack/octavia/+/890215 Could I ask why we cannot merge it? Nguyen Huu Khoi

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ERROR dpif_netlink|INFO|dpif_netlink_meter_transact OVS_METER_CMD_SET failed
by alibasafa18＠gmail.com 07 Jan '25

07 Jan '25

I have set up OpenStack using Kolla Ansible with OVS and OVN. On one compute node, meters are functioning correctly, but on another, I am encountering an issue. Both nodes use the system datapath, have the same kernel version, and run the same version of OVS. Despite this, the problem persists. Has anyone experienced a similar issue? What could be the root cause? For example, I have two compute nodes. One of them does not have any issues, but the other meter did not work . following compute meter does not working: > sudo docker exec -it openvswitch_vswitchd bash (openvswitch-vswitchd)[root@compute1 /]# lsmod | grep open openvswitch 172032 13 nsh 16384 1 openvswitch nf_conncount 24576 1 openvswitch nf_nat 49152 1 openvswitch nf_conntrack 172032 6 nf_nat,nfnetlink_cttimeout,openvswitch,nf_conntrack_netlink,nf_conncount,ip_vs nf_defrag_ipv6 24576 3 nf_conntrack,openvswitch,ip_vs libcrc32c 16384 6 nf_conntrack,nf_nat,openvswitch,btrfs,raid456,ip_vs (openvswitch-vswitchd)[root@compute1 /]# ovs-appctl dpif/show-dp-features br-int Masked set action: Yes Tunnel push pop: No Ufid: Yes Truncate action: Yes Clone action: Yes Sample nesting: 10 Conntrack eventmask: Yes Conntrack clear: Yes Max dp_hash algorithm: 0 Check pkt length action: Yes Conntrack timeout policy: Yes Explicit Drop action: No Optimized Balance TCP mode: No Conntrack all-zero IP SNAT: Yes MPLS Label add: Yes Max VLAN headers: 2 Max MPLS depth: 3 Recirc: Yes CT state: Yes CT zone: Yes CT mark: Yes CT label: Yes CT state NAT: Yes CT orig tuple: Yes CT orig tuple for IPv6: Yes IPv6 ND Extension: No (openvswitch-vswitchd)[root@compute1 /]# ovs-ofctl -OOpenFlow15 meter-features br-int OFPST_METER_FEATURES reply (OF1.5) (xid=0x2): max_meter:0 max_bands:0 max_color:0 band_types: 0 capabilities: 0 (openvswitch-vswitchd)[root@compute1 /]# ovs-vsctl --version ovs-vsctl (Open vSwitch) 3.3.2 DB Schema 8.5.0 (openvswitch-vswitchd)[root@compute1 /]# uname -r 5.15.0-86-generic (openvswitch-vswitchd)[root@compute1 /]# uptime 08:27:39 up 87 days, 19:51, 0 users, load average: 3.36, 4.58, 4.19 ====================== following compute working without issue: > sudo docker exec -it openvswitch_vswitchd bash (openvswitch-vswitchd)[root@compute2 /]# lsmod | grep open openvswitch 172032 23 nsh 16384 1 openvswitch nf_conncount 24576 1 openvswitch nf_nat 49152 1 openvswitch nf_conntrack 172032 6 nf_nat,nfnetlink_cttimeout,openvswitch,nf_conntrack_netlink,nf_conncount,ip_vs nf_defrag_ipv6 24576 3 nf_conntrack,openvswitch,ip_vs libcrc32c 16384 6 nf_conntrack,nf_nat,openvswitch,btrfs,raid456,ip_vs (openvswitch-vswitchd)[root@compute2 /]# ovs-appctl dpif/show-dp-features br-int Masked set action: Yes Tunnel push pop: No Ufid: Yes Truncate action: Yes Clone action: Yes Sample nesting: 10 Conntrack eventmask: Yes Conntrack clear: Yes Max dp_hash algorithm: 0 Check pkt length action: Yes Conntrack timeout policy: Yes Explicit Drop action: No Optimized Balance TCP mode: No Conntrack all-zero IP SNAT: Yes MPLS Label add: Yes Max VLAN headers: 2 Max MPLS depth: 3 Recirc: Yes CT state: Yes CT zone: Yes CT mark: Yes CT label: Yes CT state NAT: Yes CT orig tuple: Yes CT orig tuple for IPv6: Yes IPv6 ND Extension: No (openvswitch-vswitchd)[root@compute27 /]# ovs-ofctl -OOpenFlow15 meter-features br-int OFPST_METER_FEATURES reply (OF1.5) (xid=0x2): max_meter:200000 max_bands:1 max_color:0 band_types: drop capabilities: kbps pktps burst stats (openvswitch-vswitchd)[root@compute2 /]# ovs-vsctl --version ovs-vsctl (Open vSwitch) 3.3.2 DB Schema 8.5.0 (openvswitch-vswitchd)[root@compute2 /]# uname -r 5.15.0-86-generic (openvswitch-vswitchd)[root@compute2 /]# uptime 08:29:47 up 87 days, 19:53, 0 users, load average: 11.23, 13.13, 13.29

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ERROR dpif_netlink|INFO|dpif_netlink_meter_transact OVS_METER_CMD_SET failed
by alibasafa18＠gmail.com 07 Jan '25

07 Jan '25

I have set up OpenStack using Kolla Ansible with OVS and OVN. On one compute node, meters are functioning correctly, but on another, I am encountering an issue. Both nodes use the system datapath, have the same kernel version, and run the same version of OVS. Despite this, the problem persists. Has anyone experienced a similar issue? What could be the root cause? i have both compute for example in the following. following compute node i have issue: > sudo docker exec -it openvswitch_vswitchd bash (openvswitch-vswitchd)[root@si1-compute1 /]# lsmod | grep open openvswitch 172032 13 nsh 16384 1 openvswitch nf_conncount 24576 1 openvswitch nf_nat 49152 1 openvswitch nf_conntrack 172032 6 nf_nat,nfnetlink_cttimeout,openvswitch,nf_conntrack_netlink,nf_conncount,ip_vs nf_defrag_ipv6 24576 3 nf_conntrack,openvswitch,ip_vs libcrc32c 16384 6 nf_conntrack,nf_nat,openvswitch,btrfs,raid456,ip_vs (openvswitch-vswitchd)[root@si1-compute4174 /]# ovs-appctl dpif/show-dp-features br-int Masked set action: Yes Tunnel push pop: No Ufid: Yes Truncate action: Yes Clone action: Yes Sample nesting: 10 Conntrack eventmask: Yes Conntrack clear: Yes Max dp_hash algorithm: 0 Check pkt length action: Yes Conntrack timeout policy: Yes Explicit Drop action: No Optimized Balance TCP mode: No Conntrack all-zero IP SNAT: Yes MPLS Label add: Yes Max VLAN headers: 2 Max MPLS depth: 3 Recirc: Yes CT state: Yes CT zone: Yes CT mark: Yes CT label: Yes CT state NAT: Yes CT orig tuple: Yes CT orig tuple for IPv6: Yes IPv6 ND Extension: No (openvswitch-vswitchd)[root@si1-compute1 /]# ovs-ofctl -OOpenFlow15 meter-features br-int OFPST_METER_FEATURES reply (OF1.5) (xid=0x2): max_meter:0 max_bands:0 max_color:0 band_types: 0 capabilities: 0 (openvswitch-vswitchd)[root@si1-compute1 /]# ovs-vsctl --version ovs-vsctl (Open vSwitch) 3.3.2 DB Schema 8.5.0 (openvswitch-vswitchd)[root@si1-compute1 /]# uname -r 5.15.0-86-generic (openvswitch-vswitchd)[root@si1-compute1 /]# uptime 08:27:39 up 87 days, 19:51, 0 users, load average: 3.36, 4.58, 4.19 ================================= following compute node working correctly: (openvswitch-vswitchd)[root@si1-compute2 /]# lsmod | grep open openvswitch 172032 23 nsh 16384 1 openvswitch nf_conncount 24576 1 openvswitch nf_nat 49152 1 openvswitch nf_conntrack 172032 6 nf_nat,nfnetlink_cttimeout,openvswitch,nf_conntrack_netlink,nf_conncount,ip_vs nf_defrag_ipv6 24576 3 nf_conntrack,openvswitch,ip_vs libcrc32c 16384 6 nf_conntrack,nf_nat,openvswitch,btrfs,raid456,ip_vs (openvswitch-vswitchd)[root@si1-compute2 /]# ovs-appctl dpif/show-dp-features br-int Masked set action: Yes Tunnel push pop: No Ufid: Yes Truncate action: Yes Clone action: Yes Sample nesting: 10 Conntrack eventmask: Yes Conntrack clear: Yes Max dp_hash algorithm: 0 Check pkt length action: Yes Conntrack timeout policy: Yes Explicit Drop action: No Optimized Balance TCP mode: No Conntrack all-zero IP SNAT: Yes MPLS Label add: Yes Max VLAN headers: 2 Max MPLS depth: 3 Recirc: Yes CT state: Yes CT zone: Yes CT mark: Yes CT label: Yes CT state NAT: Yes CT orig tuple: Yes CT orig tuple for IPv6: Yes IPv6 ND Extension: No (openvswitch-vswitchd)[root@si1-compute2 /]# ovs-ofctl -OOpenFlow15 meter-features br-int OFPST_METER_FEATURES reply (OF1.5) (xid=0x2): max_meter:200000 max_bands:1 max_color:0 band_types: drop capabilities: kbps pktps burst stats (openvswitch-vswitchd)[root@si1-compute2 /]# ovs-vsctl --version ovs-vsctl (Open vSwitch) 3.3.2 DB Schema 8.5.0 (openvswitch-vswitchd)[root@si1-compute2 /]# uname -r 5.15.0-86-generic (openvswitch-vswitchd)[root@si1-compute2 /]# uptime 08:29:47 up 87 days, 19:53, 0 users, load average: 11.23, 13.13, 13.29

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[tc][all] OpenStack Technical Committee Weekly Meeting Agenda (2025.1/R-12)
by Goutham Pacha Ravi 07 Jan '25

07 Jan '25

Hello Stackers, Happy New Year! The OpenStack Technical Committee will resume its regular meeting schedule this week. The next weekly meeting is scheduled to take place simultaneously on Video (Zoom) and IRC (OFTC) on January 7, 2024, at 1800 UTC. Please find the meeting agenda and details for joining the meeting on the meeting wiki [1]. On behalf of the OpenStack TC, Goutham Pacha Ravi (gouthamr) OpenStack TC Chair [1] TC Meeting Agenda, 2025-01-07: https://wiki.openstack.org/wiki/Meetings/TechnicalCommittee#Next_Meeting

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custom playbook for nova
by engineer2024 06 Jan '25

06 Jan '25

can anyone guide me what are the tasks required for configuring nova service in OSA, so that I want to execute only those tasks and db steps , skipping the package installation steps. So I need to run nova playbook just to configure the nova like nova.conf, populating it with relevant options, do nova db migrate and then just restart the services. Is there a way to do it ? Thanks elinux

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yoga to antelope upgrade path
by Satish Patel 05 Jan '25

05 Jan '25

Folks, I am running yoga in production with ovn driver and planning to upgrade to the 2023.1 release. Are there any issues to directly go to 2023.1 before intermediate release? Or anything critical I should be aware of?

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[neutron][ovn] ovn database backup and restore
by Satish Patel 05 Jan '25

05 Jan '25

Folks, I have OVN running on 3 node controllers with a RAFT clustering. What is the best way to take backup of all the databases of nb_db and sb_db and how to restore them during a full disaster situation? Is the following the correct way to take backup? ovsdb-client backup unix:///run/ovn/ovnnb_db.sock OVN_Northbound > nb-snap-$(date +%s).txt ovsdb-client backup unix:///run/ovn/ovnsb_db.sock OVN_Southbound > sb-snap-$(date +%s).txt During restore on what node we should restore and does restore work on fresh cluster or existing cluster? How do other folks handle disaster scenarios where all 3 nodes are down or required migration?

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