Hello, Is there anybody who can help me to find where is my problem. I'm trying to generate a mapper device with the tools multipath. But visibly it blocs before it finish, because I don't have any new mapper device. When i chose the verbose level 3 i can see those interesting things: <blockquote style="border-left: 1px solid rgb(204, 204, 204); margin: 0pt 0pt 0pt 0.8ex; padding-left: 1ex;" class="gmail_quote"># multipath -v3 [...] sda: not found in pathvec [...] sdb: not found in pathvec [...] sdc: not found in pathvec [...] sdd: not found in pathvec [...] test: set ACT_CREATE (map does not exist) test: domap (0) failure for create/reload map [...] libdevmapper: libdm-common.c(239): Setting SELinux context for /dev/mapper/test to system_u:object_r:fixed_disk_device_t. [...] </blockquote> I think the most interesting thing is the "domap (0) failure for create/reload map". I've read a bit about the code mutlipath (cm/linux/storage/multipath-tools/libmultipath/configure.c+domap+(0)+failure+for+create/reload+map&hl=fr&ct=clnk&cd=4&gl=be&client=firefox-a) And conclude (but not sure) that's the dm_addmap failed. you can find the output of multipath -v3 here: --> <a href="http://rafb.net/p/J45SFA12.html" target="_blank">http://rafb.net/p/J45SFA12.html</a> My multipath.conf here: --> <a href="http://rafb.net/p/G66QZ826.html" target="_blank">http://rafb.net/p/G66QZ826.html</a> Thank you in advance for any idea! Laurent