> root@btv1:~# multipath -l > vod (360080e50001baa46000025834d501798) dm-0 IBM ,1746 FASt > [size=13T][features=0][hwhandler=0] > \_ round-robin 0 [prio=0][active] > \_ 0:0:2:1 sdc 8:32 [active][undef] > \_ round-robin 0 [prio=0][enabled] > \_ 0:0:3:1 sdd 8:48 [active][undef] > > > Is this normal? On Gentoo system connected to the same DS I see: > There you can say the multipath tools version is outdated on your ubuntu version (still old output tree format). > mon1 ~ # multipath -l > vod (360080e50001baa46000025834d501798) dm-0 IBM,1746 FAStT > size=13T features='3 queue_if_no_path pg_init_retries 50' hwhandler='1 > rdac' wp=rw > |-+- policy='round-robin 0' prio=-1 status=active > | `- 0:0:2:1 sdc 8:32 active undef running > `-+- policy='round-robin 0' prio=-1 status=enabled > `- 0:0:3:1 sdd 8:48 active undef running > > Could you tell me what's hwhandler and why it's 0 in one case and 1 in > another. > Here the multipath tools version is more recent. More storage device definitions get added every month. The hardware handler is one of the properties of such a storage device definition. This property is used to format the multipath device mapper string. On your ubuntu setup, multipath tools picked the default hardware handler (none, ie 0) whereas on your gentoo setup the hardware handler is explicitely set for use with your storage device. Now 2 choices : 1/ upgrade multipath-tools or 2/ set up your device definition in multipath.conf to override internal defaults Regards, -- Christophe Varoqui <christophe.varoqui@xxxxxxxxxxx> OpenSVC -- dm-devel mailing list dm-devel@xxxxxxxxxx https://www.redhat.com/mailman/listinfo/dm-devel
