Find the major/minor number of /dev/dm-1 (most likely 253,1). Then run "dmsetup table --major <major> --minor <minor>". It is most likely same as your mpath0p1 Or see the major/minor of mpath0p1. Thanks, Malahal. Saito Jun [cartman@xxxxxxxxxxxxxxxx] wrote: > 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 -- dm-devel mailing list dm-devel@xxxxxxxxxx https://www.redhat.com/mailman/listinfo/dm-devel
