[BUG]: Gobrick does not clean wwids from /etc/multipath/wwids after removing multipath devices

[AkshaySainiDell]

Bug Description

Gobrick executes the following set of commands for removing a multipath device:

multipath -f /dev/dm-2
echo 1 > /sys/class/block/sdf/device/delete
multipathd del path /dev/sdf

These commands do not remove entries from the /etc/multipath/wwids file, resulting in stale entries being left behind. The growing count of entries could potentially impact the performance of multipath if the file becomes exceptionally large.

To address this issue, Gobrick should be enhanced to remove a device from the wwids file using below command:

multipath -w mpathX (or WWID)

Logs

N/A

Screenshots

Additional Environment Information

No response

Steps to Reproduce

Using any CSM Driver:

1. Create a PVC.
2. Create a POD that consumes the PVC.
3. Note the WWIDs on the worker node where the POD is scheduled:

   wc -l /etc/multipath/wwids

4. Delete the POD.
5. Check the WWIDs again:

   wc -l /etc/multipath/wwids

   Observation: The count will not decrease.

Expected Behavior

Stale devices from wwids file should be removed

CSM Driver(s)

All CSM drivers

Installation Type

No response

Container Storage Modules Enabled

No response

Container Orchestrator

N/A

Operating System

N/A

[AkshaySainiDell]

link: 27849

[gallacher]

@AkshaySainiDell, please add labels for all impacted CSM components. Thanks.