Configuration: Device Mapper Multipath for Linux 225
Blacklist Local Drive in Multi-path Driver
If your multipath drivers are connecting to storage area networks (SANs), it
may be useful to be able to exclude or "blacklist" certain devices in your
/etc/multipath.conf file. Blacklisting prevents the multipath driver
from attempting to use those local devices.
To blacklist a local drive or device:
1
Run the
multipath -l
command to determine the local drive or
device WWID (World-Wide Identifier) or vendor/model string.
2
Edit 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.
3
Reboot the host.
Important Information About Special Partitions
When using Device Mapper with the MD3600f Series array, all physical disks
are assigned a disk device node. This includes a special device type used for
in-band management of the MD3600f Series array, known as the Access Disk
or Universal Xport device.
book.book Page 225 Tuesday, June 18, 2013 3:03 PM