Libata error messages

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Overview

All libata error messages produced by the kernel use a standard format:

ata3.00: exception Emask 0x0 SAct 0x0 SErr 0x0 action 0x2 frozen
ata3.00: cmd ea/00:00:00:00:00/00:00:00:00:00/a0 tag 0
         res 40/00:00:01:4f:c2/00:00:00:00:00/00 Emask 0x4 (timeout)
ata3.00: status: { DRDY }

Prefix

The prefix

ata3.00:

decodes as

ata prefix, indicating this is a libata port or device message
3 port number, counting from one (1)
00 device number, usually zero unless Port Multiplier or PATA master/slave is involved
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