On 11/30/22 05:56, bmarzins at redhat.com (Benjamin Marzinski) wrote:
The multpath-tools do not support the io-affinity path selector. We always add a repeat count as the path argument. The io-affinity selector doesn't take one. Instead it takes a bitmap of CPUs that a path can run on. This isn't something that lends itself to the kind of auto-assembling that multipathd does. But even if we did want to try to support this path-selector, until we do, we shouldn't be listing it in the multipath.conf documentation. Signed-off-by: Benjamin Marzinski <bmarzins at redhat.com>
--- multipath/multipath.conf.5 | 4 ---- 1 file changed, 4 deletions(-) diff --git a/multipath/multipath.conf.5 b/multipath/multipath.conf.5 index 1fea9d5a..3a45ac89 100644 --- a/multipath/multipath.conf.5 +++ b/multipath/multipath.conf.5 @@ -205,10 +205,6 @@ of outstanding I/O to the path and its relative throughput. estimation of future service time based on the history of previous I/O submitted to each path. .TP -.I "io-affinity 0" -(Since 5.11 kernel) Choose the path for the next bunch of I/O based on a CPU to -path mapping the user passes in and what CPU we are executing on. -.TP The default is: \fBservice-time 0\fR .RE .
I think the main, and only?, consumer for this path selector is Exadata. -- dm-devel mailing list dm-devel@xxxxxxxxxx https://listman.redhat.com/mailman/listinfo/dm-devel
