I've find some more info in my /var/log/syslog: kernel: device-mapper: table: 253:12: multipath: error getting device kernel: device-mapper: ioctl: error adding target to table Still no clue ? Laurent <div class="gmail_quote">2008/5/24 Laurent GEHLEN <<a href="mailto:list.4.gehlen@gmail.com">list.4.gehlen@gmail.com</a>>: <blockquote class="gmail_quote" style="border-left: 1px solid rgb(204, 204, 204); margin: 0pt 0pt 0pt 0.8ex; padding-left: 1ex;"> I've just seen that the link are dead, so I uploaded the file on my server. So now you can find the output of multipath -v3 here: --> <a href="http://xen-lo.no-ip.org/temp/output-multipath-v3" target="_blank">http://xen-lo.no-ip.org/temp/output-multipath-v3</a> And my multipath.conf here: --> <a href="http://xen-lo.no-ip.org/temp/multipath.conf" target="_blank">http://xen-lo.no-ip.org/temp/multipath.conf</a> <a href="http://rafb.net/p/J45SFA12.html" target="_blank"></a> Thanks Laurent <div class="gmail_quote">2008/5/23 Laurent GEHLEN <<a href="mailto:list.4.gehlen@gmail.com" target="_blank">list.4.gehlen@gmail.com</a>>:<div><div></div><div class="Wj3C7c"> <blockquote class="gmail_quote" style="border-left: 1px solid rgb(204, 204, 204); margin: 0pt 0pt 0pt 0.8ex; padding-left: 1ex;"> 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 </blockquote></div></div></div> </blockquote></div>