My Oracle Support Banner

Blacklisting by WWID Does Not Effect on Oracle Linux 4 (Doc ID 780711.1)

Last updated on APRIL 28, 2020

Applies to:

Linux OS - Version Oracle Linux 4.7 to Oracle Linux 4.7 [Release OL4U7]
Oracle Cloud Infrastructure - Version N/A and later
Linux x86
Linux x86-64
Linux x86-64

Symptoms

You have Oracle Linux 4U7 installed. To blacklist the local SCSI device (e.g. /dev/sda) by wwid, you modify the /etc/multipath.conf as follows:

blacklist {
    wwid     xxxx-xxxx-xxxx-xxxx
}


where wwid for /dev/sda is found by: 

#scsi_id -g -u -s /block/sda

Then you apply the new configuration by:

#multipath -F
#multipath -v2

However, /dev/sda is still initialized as a multipath device.

Changes

You have Oracle Linux 4U7 installed and use native device-mapper-multipath-0.4.5 rpm package.

Cause

To view full details, sign in with your My Oracle Support account.

Don't have a My Oracle Support account? Click to get started!

In this Document
Symptoms
Changes
Cause
Solution


My Oracle Support provides customers with access to over a million knowledge articles and a vibrant support community of peers and Oracle experts.