Yes I have LVM on the SAN Disk. But everything is on the sdd5. So i don't see by what the sd{a,b,c} could be in use ... # dmsetup table san_vg_root-san_lv_home: 0 4096000 linear 8:53 4096384 san_vg_root-san_lv_opt: 0 4096000 linear 8:53 8192384 san_vg_root-san_lv_root: 0 4096000 linear 8:53 384 san_vg_root-san_lv_tmp: 0 4096000 linear 8:53 12288384 san_vg_root-san_lv_usr: 0 4096000 linear 8:53 16384384 san_vg_root-san_lv_var: 0 10240000 linear 8:53 20480384 # ls -l /dev/sd* | grep "$majeur, *$mineur" brw-r----- 1 root disk 8, 0 May 21 13:22 /dev/sda brw-r----- 1 root disk 8, 1 May 21 13:22 /dev/sda1 brw-r----- 1 root disk 8, 2 May 21 13:22 /dev/sda2 brw-r----- 1 root disk 8, 3 May 21 13:22 /dev/sda3 brw-r----- 1 root disk 8, 5 May 21 13:22 /dev/sda5 brw-r----- 1 root disk 8, 16 May 21 13:22 /dev/sdb brw-r----- 1 root disk 8, 17 May 21 13:22 /dev/sdb1 brw-r----- 1 root disk 8, 18 May 21 13:22 /dev/sdb2 brw-r----- 1 root disk 8, 19 May 21 13:22 /dev/sdb3 brw-r----- 1 root disk 8, 21 May 21 13:22 /dev/sdb5 brw-r----- 1 root disk 8, 32 May 21 13:22 /dev/sdc brw-r----- 1 root disk 8, 33 May 21 13:22 /dev/sdc1 brw-r----- 1 root disk 8, 34 May 21 13:22 /dev/sdc2 brw-r----- 1 root disk 8, 35 May 21 13:22 /dev/sdc3 brw-r----- 1 root disk 8, 37 May 21 13:22 /dev/sdc5 brw-r----- 1 root disk 8, 48 May 21 13:22 /dev/sdd brw-r----- 1 root disk 8, 49 May 21 13:26 /dev/sdd1 brw-r----- 1 root disk 8, 50 May 21 13:22 /dev/sdd2 brw-r----- 1 root disk 8, 51 May 21 13:22 /dev/sdd3 brw-r----- 1 root disk 8, 53 May 21 13:22 /dev/sdd5 # pvdisplay --- Physical volume --- PV Name /dev/sdd5 VG Name san_vg_root PV Size 149.83 GB / not usable 1.43 MB Allocatable yes PE Size (KByte) 4096 Total PE 38356 Free PE 34606 Allocated PE 3750 PV UUID i2xhAY-1xyK-cNg0-Sfob-v76b-Kc4e-L4NS7e <div class="gmail_quote">2008/6/3 <<a href="mailto:malahal@us.ibm.com" target="_blank">malahal@us.ibm.com</a>>: <blockquote class="gmail_quote" style="border-left: 1px solid rgb(204, 204, 204); margin: 0pt 0pt 0pt 0.8ex; padding-left: 1ex;"> <div>Laurent GEHLEN [<a href="mailto:list.4.gehlen@gmail.com" target="_blank">list.4.gehlen@gmail.com</a>] wrote: > 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>Generally that means the devices you are trying to multipath are in use. See if LVM has taken over them! What does "dmsetup table" tell you? --Malahal. -- dm-devel mailing list <a href="mailto:dm-devel@redhat.com" target="_blank">dm-devel@redhat.com</a> <a href="https://www.redhat.com/mailman/listinfo/dm-devel" target="_blank">https://www.redhat.com/mailman/listinfo/dm-devel</a> </blockquote></div>