SLES 11 and multipath

[nerun]

We try to migrate one of our SLES 10.2 servers to SLES 11 and noticed some serious problems with multipath.

First, there are some tools that are now in a new location and have different Arguments:

getuid_callout "/lib/udev/scsi_id -g -u -d /dev/%n"

This executable is provided by the udev package and is now located under "/lib/udev/" and no longer under "/sbin/". The SLES 11 Documentation is wrong here.

Tools like "/sbin/mpath_prio_hds_modular" are no longer part of the multipath-tools package. I was not able to find them, are they built-in now (/lib/multipath/libpriohds.so)?

Finaly if i run multipath i don't get any mappings at all. If i run "multipath -v5" i see the following error message:

-------------------------8><-----------------------------------------------
Sep 07 10:18:53 | A13-22P413: assembled map [1 queue_if_no_path 0 2 1 round-robin 0 1 1 8:32 1000 round-robin 0 1 1 8:16 1000]

Sep 07 10:18:53 | A13-22P413: set ACT_CREATE (map does not exist)
Sep 07 10:18:53 | A13-22P413: addmap [0 230866944 multipath 1 queue_if_no_path 0 2 1 round-robin 0 1 1 8:32 1000 round-robin 0 1 1 8:16 1000]

Sep 07 10:18:54 | libdevmapper: ioctl/libdm-iface.c(1691): device-mapper: reload ioctl failed: Invalid argument
Sep 07 10:18:54 | A13-22P413: addmap [0 230866944 multipath 1 queue_if_no_path 0 2 1 round-robin 0 1 1 8:32 1000 round-robin 0 1 1 8:16 1000]

Sep 07 10:18:54 | libdevmapper: ioctl/libdm-iface.c(1691): device-mapper: reload ioctl failed: Invalid argument
Sep 07 10:18:54 | A13-22P413: domap (0) failure for create/reload map
Sep 07 10:18:54 | A13-22P413: remove multipath map
Sep 07 10:18:54 | sdb: orphaned
Sep 07 10:18:54 | sdc: orphaned
Sep 07 10:18:54 | unloading hds prioritizer
Sep 07 10:18:54 | unloading const prioritizer
Sep 07 10:18:54 | unloading tur checker
Sep 07 10:18:54 | unloading directio checker
----------------------------8><----------------------------------------

???:

"libdevmapper: ioctl/libdm-iface.c(1691): device-mapper: reload ioctl failed: Invalid argument"

Is it possible that this is still a misconfiguration or is this a bug? For me it looks like a method call with the wrong arguments.

any ideas?