Geert,
sd 0:0:0:0: [sda] tag#0 CDB: Write(10) 2a 08 00 00 00 01 00 00 08 00
^^ FUA
sd 0:0:0:0: [sda] Write cache: disabled, read cache: enabled, doesn't support DPO or FUA
The device is correct in rejecting the command, then. But I'm not sure how the commit in question would cause us to inadvertently set that flag... -- Martin K. Petersen Oracle Linux Engineering