On boot up, I see these messages. What are they and can I ignore them?

Ignore these messages. During startup of our software LUNs are locked, but Linux will try to access those LUNs.

 

Sd 12:0:0:0: [sdab] Assuming drive cache: write through

Sd 12:0:0:1: [sdbc] Asking for cache data failed

Sd 12:0:0:0: [sdac] Assuming drive cache: write through

Sd 12:0:0:1: [sdab] Asking for cache data failed

Erin Kelly
2018-10-21 15:53