I'm having an issue that is ultimately i think related to when I run the command: multipath -ll I get no output. However, if I run: multipath -d I get: # multipath -d create: mpath0 (36006016012f01c000a2f03399138dd11) DGC,RAID 5 [size=942G][features=1 queue_if_no_path][hwhandler=1 emc] \_ round-robin 0 [prio=2][undef] \_ 1:0:0:0 sdb 8:16 [undef][ready] \_ 2:0:0:0 sdd 8:48 [undef][ready] \_ round-robin 0 [prio=0][undef] \_ 1:0:1:0 sdc 8:32 [undef][ready] \_ 2:0:1:0 sde 8:64 [undef][ready] So, my server can see the SAN and is able to get info from the SAN, but it doesn't actually create the mapper device in /dev/mapper/ Is there something i'm missing to be able to resolve this? Output from multipath -v7 -ll multipath -v7 -ll dm-0: blacklisted dm-10: blacklisted dm-11: blacklisted dm-12: blacklisted dm-13: blacklisted dm-14: blacklisted dm-15: blacklisted dm-16: blacklisted dm-17: blacklisted dm-18: blacklisted dm-19: blacklisted dm-1: blacklisted dm-2: blacklisted dm-3: blacklisted dm-4: blacklisted dm-5: blacklisted dm-6: blacklisted dm-7: blacklisted dm-8: blacklisted dm-9: blacklisted hda: blacklisted loop0: blacklisted loop1: blacklisted loop2: blacklisted loop3: blacklisted loop4: blacklisted loop5: blacklisted loop6: blacklisted loop7: blacklisted ram0: blacklisted ram10: blacklisted ram11: blacklisted ram12: blacklisted ram13: blacklisted ram14: blacklisted ram15: blacklisted ram1: blacklisted ram2: blacklisted ram3: blacklisted ram4: blacklisted ram5: blacklisted ram6: blacklisted ram7: blacklisted ram8: blacklisted ram9: blacklisted sda: not found in pathvec sda: mask = 0x5 sda: bus = 1 sda: dev_t = 8:0 sda: size = 570949632 sda: vendor = DELL sda: product = PERC 5/i sda: rev = 1.03 sda: h:b:t:l = 0:2:0:0 sdb: not found in pathvec sdb: mask = 0x5 sdb: bus = 1 sdb: dev_t = 8:16 sdb: size = 1974712832 sdb: vendor = DGC sdb: product = RAID 5 sdb: rev = 0326 sdb: h:b:t:l = 1:0:0:0 sdb: tgt_node_name = 0x50060160c1e09805 sdc: not found in pathvec sdc: mask = 0x5 sdc: bus = 1 sdc: dev_t = 8:32 sdc: size = 1974712832 sdc: vendor = DGC sdc: product = RAID 5 sdc: rev = 0326 sdc: h:b:t:l = 1:0:1:0 sdc: tgt_node_name = 0x50060160c1e09805 sdd: not found in pathvec sdd: mask = 0x5 sdd: bus = 1 sdd: dev_t = 8:48 sdd: size = 1974712832 sdd: vendor = DGC sdd: product = RAID 5 sdd: rev = 0326 sdd: h:b:t:l = 2:0:0:0 sdd: tgt_node_name = 0x50060160c1e09805 sde: not found in pathvec sde: mask = 0x5 sde: bus = 1 sde: dev_t = 8:64 sde: size = 1974712832 sde: vendor = DGC sde: product = RAID 5 sde: rev = 0326 sde: h:b:t:l = 2:0:1:0 sde: tgt_node_name = 0x50060160c1e09805 sdf: not found in pathvec sdf: mask = 0x5 sdf: bus = 1 sdf: dev_t = 8:80 sdf: size = 0 sdf: vendor = Dell sdf: product = Virtual Floppy sdf: rev = 123 sdf: h:b:t:l = 4:0:0:0 sr0: blacklisted ===== paths list ===== uuid hcil dev dev_t pri dm_st chk_st vend/prod/rev 0:2:0:0 sda 8:0 -1 [undef][undef] DELL,PERC 5/i 1:0:0:0 sdb 8:16 -1 [undef][undef] DGC,RAID 5 1:0:1:0 sdc 8:32 -1 [undef][undef] DGC,RAID 5 2:0:0:0 sdd 8:48 -1 [undef][undef] DGC,RAID 5 2:0:1:0 sde 8:64 -1 [undef][undef] DGC,RAID 5 4:0:0:0 sdf 8:80 -1 [undef][faulty] Dell,Virtual Floppy libdevmapper: ioctl/libdm-iface.c(1570): dm names NF [16384] libdevmapper: ioctl/libdm-iface.c(1570): dm table lvm2|apps|cache2 NF [16384] libdevmapper: ioctl/libdm-iface.c(1570): dm table lvm2|apps|cache1 NF [16384] libdevmapper: ioctl/libdm-iface.c(1570): dm table btr_cluster.msbd4 NF [16384] libdevmapper: ioctl/libdm-iface.c(1570): dm table sdb1 NF [16384] libdevmapper: ioctl/libdm-iface.c(1570): dm table btr_cluster.msbd3 NF [16384] libdevmapper: ioctl/libdm-iface.c(1570): dm table btr_cluster.msbd2 NF [16384] libdevmapper: ioctl/libdm-iface.c(1570): dm table btr_cluster.msbd1 NF [16384] libdevmapper: ioctl/libdm-iface.c(1570): dm table lvm2|system|swap NF [16384] libdevmapper: ioctl/libdm-iface.c(1570): dm table lvm2|system|sys_lx NF [16384] libdevmapper: ioctl/libdm-iface.c(1570): dm table sda5 NF [16384] libdevmapper: ioctl/libdm-iface.c(1570): dm table btr_cluster.sbd NF [16384] libdevmapper: ioctl/libdm-iface.c(1570): dm table mail NF [16384] libdevmapper: ioctl/libdm-iface.c(1570): dm table lvm2|system|var NF [16384] libdevmapper: ioctl/libdm-iface.c(1570): dm table sdd5 NF [16384] libdevmapper: ioctl/libdm-iface.c(1570): dm table sda2 NF [16384] libdevmapper: ioctl/libdm-iface.c(1570): dm table sdb5 NF [16384] libdevmapper: ioctl/libdm-iface.c(1570): dm table lvm2|apps|cache4 NF [16384] libdevmapper: ioctl/libdm-iface.c(1570): dm table sdd1 NF [16384] libdevmapper: ioctl/libdm-iface.c(1570): dm table lvm2|btr_lun|Mail NF [16384] libdevmapper: ioctl/libdm-iface.c(1570): dm table lvm2|apps|cache3 NF [16384] Thanks BB -- Have Mercy & Say Yeah -- dm-devel mailing list dm-devel@xxxxxxxxxx https://www.redhat.com/mailman/listinfo/dm-devel