Dell MD3220, MD3200 owner manual Important Information About Special Partitions, 185

2Edit the /etc/multipath.conf file as follows: blacklist {

wwid drive_wwid

…

}

or

blacklist { device {

vendor vendor_string model model_string

};

NOTE: RedHat version 6.0 and 6.1 users must rebuild the initramfs root file image to include the updated configuration file by running the #dracut -force command.

3Reboot the host.

Important Information About Special Partitions

When using Device Mapper with the MD3200 Series array, all physical disks are assigned a disk device node. This includes a special device type used for in-band management of the MD3200 Series array, known as the Access Disk or Universal Xport device.

CAUTION: Certain commands, such as lsscsi, displays one or more instances of Universal Xport devices. These device nodes must never be accessed, mounted, or used in any way. Doing so could cause loss of communication to the storage array and possibly cause serious damage to the storage array, potential making data stored on the array inaccessible.

Only multipathing device nodes and partition nodes created using the directions provided above must be mounted or in any way accessed by the host system or its users.

Configuration: Device Mapper Multipath for Linux

185