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Who When What Removed Added
Guo, Zhiyi 2016-09-13 09:32:02 UTC CC chayang, juzhang, michen, xfu, zhguo
juzhang 2016-09-13 09:32:35 UTC QA Contact virt-bugs zhguo
Karen Noel 2016-09-13 10:39:10 UTC CC knoel
Assignee virt-maint ailan
Amnon Ilan 2016-09-13 21:47:29 UTC Assignee ailan ehabkost
Eduardo Habkost 2016-12-27 20:03:42 UTC Status NEW ASSIGNED
Doc Text Cause:
1) The "sockets" command-line option in qemu-kvm-1.5.3 is ambiguous when maxcpus is used.
2) The "threads" command-line argument is ignored and overwritten when all both "sockets" and "cores" are set.

Consequence:
1) The "threads" argument in -smp may be set to an unexpected value if using both "sockets" and "maxcpus" in the command-line.
2) QEMU won't print a warning when overwriting the "threads" value set on the command-line.

Workaround (if any):
Two possible workarounds:
1) Setting only the "cores" and "threads" arguments on the command-line.
2) Setting the "sockets" option to match the number of boot VCPUs ("-smp [cpus=]X[,...]"), not hotplug VCPUs ("-smp [...]maxcpus=X")

Result:
The "threads" argument won't be overwritten in the configuration.
Summary ht flag is missing when there is sockets option in smp "threads" option is overwritten if both "sockets" and "cores" is set on -smp
Doc Type If docs needed, set a value Known Issue
Eduardo Habkost 2016-12-27 20:45:35 UTC Status ASSIGNED POST
Miroslav Rezanina 2017-01-18 12:11:04 UTC Status POST MODIFIED
Fixed In Version qemu-kvm-1.5.3-129.el7
errata-xmlrpc 2017-01-18 12:20:40 UTC Status MODIFIED ON_QA
Guo, Zhiyi 2017-03-30 08:26:55 UTC Status ON_QA VERIFIED
Lenka Špačková 2017-04-27 14:23:58 UTC Docs Contact jherrman
errata-xmlrpc 2017-08-01 17:46:48 UTC Status VERIFIED CLOSED
Resolution --- ERRATA
Last Closed 2017-08-01 13:46:48 UTC

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