Red Hat LINUX VIRTUAL SERVER 4.7 - ADMINISTRATION Guía de instalación descargar pdf (Pagina 19)

[root@rh4cluster1 ~]# multipath -v2

create: SIBM-ESXSST336732LC____F3ET0EP0Q000072428BX1

[size=33 GB][features="0"][hwhandler="0"]

\_ round-robin 0

\_ 0:0:0:0 sda 8:0 [---------

device-mapper ioctl cmd 9 failed: Invalid argument

device-mapper ioctl cmd 14 failed: No such device or address

create: 3600a0b80001327d80000006d43621677

[size=12 GB][features="0"][hwhandler="0"]

\_ round-robin 0

\_ 2:0:0:0 sdb 8:16

\_ 3:0:0:0 sdf 8:80

create: 3600a0b80001327510000009a436215ec

[size=12 GB][features="0"][hwhandler="0"]

\_ round-robin 0

\_ 2:0:0:1 sdc 8:32

\_ 3:0:0:1 sdg 8:96

create: 3600a0b80001327d800000070436216b3

[size=12 GB][features="0"][hwhandler="0"]

\_ round-robin 0

\_ 2:0:0:2 sdd 8:48

\_ 3:0:0:2 sdh 8:112

create: 3600a0b80001327510000009b4362163e

[size=12 GB][features="0"][hwhandler="0"]

\_ round-robin 0

\_ 2:0:0:3 sde 8:64

\_ 3:0:0:3 sdi 8:128

2. In order to prevent the device mapper from mapping /dev/sda in its multipath maps, edit the

devnode_blacklist section of the /etc/multipath.conf file to include this device.

Although you could blacklist the sda device using a devnode type, that would not be safe

procedure since /dev/sda is not guaranteed to be the same on reboot. T o blacklist individual

devices, you can blacklist using the WWID of that device.

Note that in the output to the m ultipath -vs command, the WWID of the /dev/sda device is

SIBM-ESXSST336732LC____F3ET0EP0Q000072428BX1. To blacklist this device, include the

following in the /etc/m ultipath.conf file.

devnode_blacklist {

wwid SIBM-ESXSST336732LC____F3ET0EP0Q000072428BX1

}

3. Run the following commands:

multipath -F

multipath -v2

The local disk or disks should no longer be listed in the new multipath maps, as shown in the

following example.

Red Hat Enterprise Linux 4 DM Multipath

1 2 ... 14 15 16 17 18 19 20 21 22 23 24 ... 40 41

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Red Hat LINUX VIRTUAL SERVER 4.7 - ADMINISTRATION Guía de instalación Pagina 19

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