What does camcontrol devlist say? I'm guessing firmware MU02, but I
want to make sure...

It shouldn't match this one. The MU07 exception works for my M500's,
so I'm confused...

Please file a bugzilla ticket.

Warner

On Tue, Aug 16, 2016 at 8:01 AM, Tomoaki AOKI <junch...@dec.sakura.ne.jp> wrote:
> Hi.
>
> I noticed that my Crucial M550 SSD (firmware MU02) is missingly
> recognized as quirk ADA_Q_NCQ_TRIM_BROKEN.
> If I understand the source (introduced first at r298002, before
> stable/11 branched) correctly, only firmware MU01 should be recognized
> so for the SSD model, so I have no idea why. :-(
>
> Below are the related portion of dmesg. stable/11 at r304189, amd64.
> (Built with options CAM_IOSCHED_DYNAMIC.)
>
>   ada0 at ahcich0 bus 0 scbus0 target 0 lun 0
>   ada0: <Crucial CT1024M550SSD1 MU02> ACS-2 ATA SATA 3.x device
>   ada0: Serial Number ************
>   ada0: 600.000MB/s transfers (SATA 3.x, UDMA6, PIO 8192bytes)
>   ada0: Command Queueing enabled
>   ada0: 976762MB (2000409264 512 byte sectors)
>   ada0: quirks=0x2<NCQ_TRIM_BROKEN>
>   Steering write from 0 kBps to 300000 kBps
>
> One thing to note: The SSD was shipped with MU01 and updated to MU02
> using CD image obtained from Crucial Japan website.
>
> Need Bugzilla ticket although it's not a severe problem (goes safer
> side, and easy to workaround via loader.conf)?
>
> --
> Tomoaki AOKI    <junch...@dec.sakura.ne.jp>
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