How to Install Multipath Raw Device for Voting/OCR IN RHEL5 U1

Question

Dear all,
Setup
Two Node RAC Cluster with IBM disk Array DS4700
OS- RHEL 5 Update1 (2.6.18-53.el5)
Oracle- 10.2.0.1
Failover Driver- RDAC Driver (Linux MPP Driver Version: 09.02.C5.16)
I am trying to follow Metalink Note-564580.1
But when i am configuring Multipathing and Verify Multipath Devices.
I am not getting any output when i am issuing the following command
#multipath -ll
I checked the service mulipath
[root@db1 dev]# service multipathd status
multipathd (pid 3845) is running...
[root@db1 dev]#
Please let me know, if you have solution.
Rgds
Sumit
Bangalore,India

Answer 1

[root@wmcdb2 ~]# service multipathd restart
Stopping multipathd daemon: [  OK  ]
Starting multipathd daemon: [  OK  ]
[root@wmcdb2 ~]#
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[root@wmcdb2 ~]# fdisk -l
Disk /dev/sda: 146.5 GB, 146578341888 bytes
255 heads, 63 sectors/track, 17820 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes
Device Boot Start End Blocks Id System
/dev/sda1 * 1 131 1052226 83 Linux
/dev/sda2 132 7143 56323890 83 Linux
/dev/sda3 7144 8187 8385930 82 Linux swap / Solaris
/dev/sda4 8188 17820 77377072+ 5 Extended
/dev/sda5 8188 17820 77377041 83 Linux
Disk /dev/sdb: 2147 MB, 2147483648 bytes
67 heads, 62 sectors/track, 1009 cylinders
Units = cylinders of 4154 * 512 = 2126848 bytes
Device Boot Start End Blocks Id System
/dev/sdb1 1 1009 2095662 83 Linux
Disk /dev/sdc: 1073 MB, 1073741824 bytes
34 heads, 61 sectors/track, 1011 cylinders
Units = cylinders of 2074 * 512 = 1061888 bytes
Device Boot Start End Blocks Id System
/dev/sdc1 1 1011 1048376+ 83 Linux
Disk /dev/sdd: 107.3 GB, 107374182400 bytes
255 heads, 63 sectors/track, 13054 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes
Disk /dev/sdd doesn't contain a valid partition table
Disk /dev/sde: 108.0 GB, 108005425152 bytes
255 heads, 63 sectors/track, 13130 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes
Disk /dev/sde doesn't contain a valid partition table
Disk /dev/sdf: 48.3 GB, 48318382080 bytes
64 heads, 32 sectors/track, 46080 cylinders
Units = cylinders of 2048 * 512 = 1048576 bytes
Disk /dev/sdf doesn't contain a valid partition table
Disk /dev/sdg: 24.5 GB, 24551358464 bytes
64 heads, 32 sectors/track, 23414 cylinders
Units = cylinders of 2048 * 512 = 1048576 bytes
Disk /dev/sdg doesn't contain a valid partition table
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===============================================
[root@wmcdb2 ~]# multipath -ll
mpath2 (3600a0b80002ab33400000893489f7c76) dm-2 IBM,VirtualDisk
[size=100G][features=0][hwhandler=0]
\_ round-robin 0 [prio=0][active]
\_ 5:0:0:3 sdd 8:48 [active][ready]
mpath1 (3600a0b8000501e1600000897489f7f52) dm-1 IBM,VirtualDisk
[size=1.0G][features=0][hwhandler=0]
\_ round-robin 0 [prio=0][active]
\_ 5:0:0:2 sdc 8:32 [active][ready]
mpath0 (3600a0b80002ab33400000890489f7c34) dm-0 IBM,VirtualDisk
[size=2.0G][features=0][hwhandler=0]
\_ round-robin 0 [prio=0][active]
\_ 5:0:0:1 sdb 8:16 [active][ready]
mpath5 (3600a0b8000501e160000089b489f7fd2) dm-5 IBM,VirtualDisk
[size=23G][features=0][hwhandler=0]
\_ round-robin 0 [prio=0][active]
\_ 5:0:0:6 sdg 8:96 [active][ready]
mpath4 (3600a0b80002ab33400000895489f7cb9) dm-4 IBM,VirtualDisk
[size=45G][features=0][hwhandler=0]
\_ round-robin 0 [prio=0][active]
\_ 5:0:0:5 sdf 8:80 [active][ready]
mpath3 (3600a0b8000501e1600000899489f7f7f) dm-3 IBM,VirtualDisk
[size=101G][features=0][hwhandler=0]
\_ round-robin 0 [prio=0][active]
\_ 5:0:0:4 sde 8:64 [active][ready]
[root@wmcdb2 ~]#
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=====================================================
[root@wmcdb2 ~]# cat /proc/partitions
major minor #blocks name
8 0 143142912 sda
8 1 1052226 sda1
8 2 56323890 sda2
8 3 8385930 sda3
8 4 1 sda4
8 5 77377041 sda5
8 16 2097152 sdb
8 17 2095662 sdb1
8 32 1048576 sdc
8 33 1048376 sdc1
8 48 104857600 sdd
8 64 105474048 sde
8 80 47185920 sdf
8 96 23975936 sdg
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============================================
[root@wmcdb2 ~]# cat /etc/multipath.conf
defaults {
user_friendly_names yes
defaults {
udev_dir /dev
polling_interval 10
selector "round-robin 0"
path_grouping_policy failover
getuid_callout "/sbin/scsi_id -g -u -s /block/%n"
prio_callout /bin/true
path_checker readsector0
rr_min_io 100
rr_weight priorities
failback immediate
# no_path_retry fail
user_friendly_name yes
devnode_blacklist {
&n sp; devnode "^(ram|raw|loop|fd|md|dm-|sr|scd|st)[0-9]*"
d vnode "^hd[a-z]"
devnode "^sda"
nbsp; devnode "^cciss!c[0-9]d[0-9]*"
multipaths {
nbsp; multipath {
& bsp; wwid 3600a0b80002ab33400000890489f7c34
alias ocr1
multipath {
wwid 3600a0b8000501e1600000897489f7f52
alias voting1
[root@wmcdb2 ~]#
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