Hello everybody professional. I am embarrassed. What is this /dev/dm-1? The cylinder is different though it is the same capacity. And I newly made LUN. ------------------------- [root@ns01 ~]# fdisk -l This doesn't look like a partition table Probably you selected the wrong device. dev/sdb: 10.7 GB, 10737418240 bytes 255 heads, 63 sectors/track, 1305 cylinders Units = cylinders of 16065 * 512 = 8225280 bytes Device Boot Start End Blocks Id System /dev/sdb1 * 1 1305 10482381 7 HPFS/NTFS Disk /dev/sdc: 10.7 GB, 10737418240 bytes 255 heads, 63 sectors/track, 1305 cylinders Units = cylinders of 16065 * 512 = 8225280 bytes Device Boot Start End Blocks Id System /dev/sdc1 * 1 1305 10482381 7 HPFS/NTFS Disk /dev/dm-0: 10.7 GB, 10737418240 bytes 255 heads, 63 sectors/track, 1305 cylinders Units = cylinders of 16065 * 512 = 8225280 bytes Device Boot Start End Blocks Id System /dev/dm-0p1 * 1 1305 10482381 7 HPFS/NTFS Disk /dev/dm-1: 10.7 GB, 10733958144 bytes 255 heads, 63 sectors/track, 1304 cylinders Units = cylinders of 16065 * 512 = 8225280 bytes This doesn't look like a partition table Probably you selected the wrong device. Device Boot Start End Blocks Id System /dev/dm-1p1 ? 10499 10499 0 65 Novell Netware 386 Partition 1 does not end on cylinder boundary. /dev/dm-1p2 ? 13578 119522 850995205 72 unknown Partition 2 does not end on cylinder boundary. /dev/dm-1p3 ? 45382 79243 271987362 74 unknown Partition 3 does not end on cylinder boundary. /dev/dm-1p4 167628 167631 25817+ 0 empty Partition 4 does not end on cylinder boundary. --------------------------------- It explains the procedure. -------------------- My Environment /dev/sda [LocalDisk] /dev/sdb [SAN External Disk] /dev/sdc [SAN External Disk] Configure Multipath Edit /etc/multipath.conf /etc/init.d/multipathd Create Partition fdisk /dev/sdb Create Multipath block device kpartx -a /dev/mapper/mpath0 Create File System mke2fs -j /dev/mapper/mpath0p1 Mount mount -t ext3 /dev/mapper/mpath0p1 Question ls /dev/dm-1 --------------------- Regards, -- dm-devel mailing list dm-devel@xxxxxxxxxx https://www.redhat.com/mailman/listinfo/dm-devel
