On Wed, 2020-04-22 at 16:00 +0200, Gioh Kim wrote: > > One question. > Is it possible for multipathd to generate an event for removing a > map? > I am looking into the source code, ev_add_path and some functions > related to add a path, > but it looks like it does not generate any event. I guess you mean an uevent. These events are created by the kernel when multipath creates or reloads maps. multipathd normally doesn't trigger the events directly. But there are some cases where multipathd basically runs the equivalent of "udevadm trigger -c change" on either maps or paths. Search the code for "trigger" for details. There are also device mapper events which are created by the kernel for certain state changes of dm devices. Again, multipathd only receives such events. Regards Martin -- dm-devel mailing list dm-devel@xxxxxxxxxx https://www.redhat.com/mailman/listinfo/dm-devel
