After adding a LUN from a EMC Clariion CX700 to a system with already many of these, I noticed that multipath doesn't see a path: 360060160eb241700284f88a159efdc11 [size=450 GB][features="1 queue_if_no_path"][hwhandler="1 emc"] \_ round-robin 0 [prio=1][enabled] \_ 1:0:0:70 sdbo 68:32 [active][ready] \_ round-robin 0 [enabled] \_ 0:0:3:70 sdbn 68:16 [active][ready] \_ 1:0:1:70 sdbp 68:48 [active][ready] >From SCSI layer, it is OK: Host: scsi0 Channel: 00 Id: 02 Lun: 70 Vendor: DGC Model: RAID 5 Rev: 0219 Type: Direct-Access ANSI SCSI revision: 04 Host: scsi0 Channel: 00 Id: 03 Lun: 70 Vendor: DGC Model: RAID 5 Rev: 0219 Type: Direct-Access ANSI SCSI revision: 04 Host: scsi1 Channel: 00 Id: 00 Lun: 70 Vendor: DGC Model: RAID 5 Rev: 0219 Type: Direct-Access ANSI SCSI revision: 04 Host: scsi1 Channel: 00 Id: 01 Lun: 70 Vendor: DGC Model: RAID 5 Rev: 0219 Type: Direct-Access ANSI SCSI revision: 04 but one device is missing under /dev: brw-rw---- 1 root disk 68, 16 Mar 11 14:44 /dev/sdbn brw-rw---- 1 root disk 68, 32 Mar 11 14:45 /dev/sdbo brw-rw---- 1 root disk 68, 48 Mar 11 14:45 /dev/sdbp How can I fix this? Thanks in advance -- Domenico Viggiani -- dm-devel mailing list dm-devel@xxxxxxxxxx https://www.redhat.com/mailman/listinfo/dm-devel