The Meaning of "[sdx] Write Cache: Disabled, Read Cache: Disabled, Doesn't Support DPO Or FUA"

(Doc ID 2398553.1)

Last updated on MAY 18, 2018

Applies to:

Linux OS - Version Oracle Linux 5.0 and later
Linux x86-64

Goal

To understand the meaning of the  following messages and its impact .

>>/var/log/messages

May 4 23:10:34 test01 kernel: sd 0:0:0:11: [sdx] Write cache: disabled, read cache: enabled, doesn't support DPO or FUA
May 4 23:10:34 test01 kernel: sd 0:0:0:9: [sdy] Write cache: disabled, read cache: enabled, doesn't support DPO or FUA
May 4 23:10:34 test01 kernel: sd 0:0:0:10: [sdz] Write cache: disabled, read cache: enabled, doesn't support DPO or FUA

 


 

Solution

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