On Tue, Sep 30, 2008 at 12:47:34PM +0200, Harald_Jensas@xxxxxxxx wrote: > Hi, > > I just subscribed to the list, I am an enterprise deployment engineer at Dell and do frequently work with device-mapper-multipath. A few weeks back I configured the SAN storage for 4 RHEL 5 servers that will be an Oracle RAC cluster. Now the customer plugged an USB key into 2 of the systems, and he noticed that device-mapper-multipath creates a device and adds a binding to /var/lib/multipath/bindings. > You can also edit the udev rules (or add a new one) that will make your USB devices be ignored by multipath daemon. This will effectivly ignore _any_ USB device. Look for example for 40-redhat.rules and 'man udev' on how to configure your own rules. Here is an example where the linear maps don't ever get to the multipathd daemon: #Weed out the linear map. KERNEL=="dm-*", PROGRAM=="/sbin/dmsetup table -j %M -m %m", RESULT=="*linear*", OPTIONS="last_rule" # And block devices that come from usb: ACTION=="add", KERNEL=="sd*", SUBSYSTEM=="usb", OPTIONS="last_rule" This of course being before the, catch-it-all rule: RUN+="socket:/org/kernel/dm/multipath_event" -- dm-devel mailing list dm-devel@xxxxxxxxxx https://www.redhat.com/mailman/listinfo/dm-devel
