[15:03:54 root@virt2 /mnt]# dd if=/dev/zero of=/dev/mapper/mpath28p1 count=1000 bs=1M
1048576000 bytes (1.0 GB) copied, 18.5905 seconds, 56.4 MB/s

[15:05:33 root@virt2 /mnt]# dd if=/dev/zero of=/dev/mapper/mpath28p1 count=250000 bs=4k
1024000000 bytes (1.0 GB) copied, 19.7704 seconds, 51.8 MB/s

[15:06:56 root@virt2 /mnt]# dd if=/dev/zero of=/dev/mapper/mpath28p1 count=1000000 bs=1k
1024000000 bytes (1.0 GB) copied, 146.633 seconds, 7.0 MB/s

[15:09:34 root@virt2 /mnt]# dd if=/dev/zero of=/dev/mapper/mpath29p1 count=1000 bs=1M
1048576000 bytes (1.0 GB) copied, 15.45 seconds, 67.9 MB/s

[15:10:13 root@virt2 /mnt]# dd if=/dev/zero of=/dev/mapper/mpath29p1 count=250000 bs=4k
1024000000 bytes (1.0 GB) copied, 16.2671 seconds, 62.9 MB/s

[15:10:42 root@virt2 /mnt]# dd if=/dev/zero of=/dev/mapper/mpath29p1 count=1000000 bs=1k
1024000000 bytes (1.0 GB) copied, 385.202 seconds, 2.7 MB/s

[15:17:28 root@virt2 /mnt]# multipath -ll
mpath29 (SSCST_FIOzFN32vvFobHH9gwef1d34d1) dm-3 SCST_FIO,zFN32vvFobHH9g
[size=50G][features=0][hwhandler=0][rw]
\_ round-robin 0 [prio=2][active]
 \_ 33:0:0:0 sdaf 65:240 [active][ready]
 \_ 34:0:0:0 sdag 66:0   [active][ready]
mpath28 (SSCST_BIOL9dJ1IvkAB5qD128449472) dm-2 SCST_BIO,L9dJ1IvkAB5qD1
[size=50G][features=0][hwhandler=0][rw]
\_ round-robin 0 [prio=1][active]
 \_ 30:0:0:0 sdae 65:224 [active][ready]
[15:18:04 root@virt2 /mnt]#