Red Hat Bugzilla – Bug 1071199
qemu-kvm numa emulation won't check duplicate node id
Last modified: 2015-03-05 04:44:30 EST
Description of problem: -------------------------- numa emulation won't check duplicate node id. Version-Release number of selected component (if applicable): ------------------------------------------------------------- qemu-kvm-rhev-1.5.3-50.el7.x86_64 How reproducible: ------------------- 100% Steps to Reproduce: ---------------------- some negative test for numa: 1. -numa node,mem=1024,cpus=0,nodeid=0 -numa node,mem=1024,cpus=1-2,nodeid=1 -numa node,mem=1024,cpus=2-3,nodeid=2 QEMU 1.5.3 monitor - type 'help' for more information (qemu) info numa 3 nodes node 0 cpus: 0 node 0 size: 1024 MB node 1 cpus: 1 node 1 size: 1024 MB node 2 cpus: 2 3 node 2 size: 1024 MB 2. -numa node,mem=1024,cpus=0,nodeid=0 -numa node,mem=1024,cpus=1-5,nodeid=1 -numa node,mem=1024,cpus=3,nodeid=2 QEMU 1.5.3 monitor - type 'help' for more information (qemu) info numa 3 nodes node 0 cpus: 0 node 0 size: 1024 MB node 1 cpus: 1 2 node 1 size: 1024 MB node 2 cpus: 3 node 2 size: 1024 MB 3. -numa node,mem=1024,cpus=0,nodeid=0 -numa node,mem=1024,cpus=1-5,nodeid=1 -numa node,mem=1024,cpus=3,nodeid=1 QEMU 1.5.3 monitor - type 'help' for more information (qemu) info numa 3 nodes node 0 cpus: 0 node 0 size: 1024 MB node 1 cpus: 1 2 3 node 1 size: 1024 MB node 2 cpus: node 2 size: 0 MB 1 and 2 is tolerable, 3 may be a little trouble, in this case, guest only see one node(node 0), but this check can be done by high level tools like libvirt, so WONTFIX is also acceptable, that's why priority is low though severity is high.
Moving to qemu-kvm-rhev. Patches were included upstream and will be on QEMU 2.1.0.
Reproduce this bug as follow version: Host: qemu-kvm-rhev-1.5.3-60.el7ev.x86_64 Steps 1)Boot guest with numa nodes (nodeid has same number) ...-numa node,mem=1024,cpus=0,nodeid=0 -numa node,mem=1024,cpus=1-5,nodeid=1 -numa node,mem=1024,cpus=3,nodeid=1 Results: guest can boot up Verify this bus as follow version: # uname -r 3.10.0-144.el7.x86_64 # rpm -q qemu-kvm-rhev qemu-kvm-rhev-2.1.0-2.el7.x86_64 Steps as same as reproduce Results: qemu-kvm: -numa node,mem=1024,cpus=3,nodeid=1: Duplicate NUMA nodeid: 1
as above test comment6,this bug has been fixed.
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, 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://rhn.redhat.com/errata/RHSA-2015-0624.html