Description of problem:
-----------------------
Grafton LA release had an requirement to disable multipath devices ( because of the bug 1303940 ) in the system. With that said, disable-multipath.sh script was developed to disable all the multipath devices.
With HCI GA, the bug 1303940 is fixed as use_lvmetad is set to '0', but still the vdsm configures multipath such that it creates the WWID/mpath names for the devices, even though such an device doesn't have multipath exist.
This is the behavior with any hypervisor managed in RHV.
So avoid WWID/mpath names getting assigned, we need to configure blacklisting of a device specifically.
Version-Release number of selected component (if applicable):
-------------------------------------------------------------
gdeploy-2.0.1-11.el7rhgs
How reproducible:
-----------------
Always
Steps to Reproduce:
-------------------
1. Run disable-multipath.sh script to blacklist the specific device
Actual results:
---------------
All the devices are blacklisted
Expected results:
-----------------
Blacklist the specific device
Also make sure that the file /etc/multipath.conf starts with these lines :
# VDSM REVISION 1.3
# VDSM PRIVATE
provided that these lines are not already there
Tested with gdeploy-2.0.2-27.el7rhgs
/etc/multipath.conf file starts with these lines
# VDSM REVISION 1.3
# VDSM PRIVATE
# VDSM REVISION 1.5
In actual '# VDSM REVISION 1.3' is not required. vdsm revision value has been now bumped up to 1.5
Verified that all the devices are blacklisted.
Since the problem described in this bug report should be
resolved in a recent advisory, it has been closed with a
resolution of ERRATA.
For information on the advisory, and where to find the updated
files, follow the link below.
If the solution does not work for you, open a new bug report.
https://access.redhat.com/errata/RHEA-2018:1958