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Date: Sun, 10 Apr 2016 15:56:21 +0900
From: Tomoaki AOKI <junchoon@dec.sakura.ne.jp>
To: freebsd-current@freebsd.org
Subject: Question about cam 4K quirks
Message-Id: <20160410155621.82b751fa79f94ab2472264d7@dec.sakura.ne.jp>
Organization: Junchoon corps
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Hi. Maybe freebsd-hardware list would be the right place, but it's not
so active. :-(

Is 4K quirks needed for every HDDs/SSDs having physical sector size
4096?

If so, I would be able to provide patch for Crucial M550 and MX200.
(Possibly covers other models [BX200 etc.] by abstraction.)

  M550(1TB):  device model          Crucial CT1024M550SSD1
              firmware revision     MU01
  MX200(1TB): device model          Crucial CT1024MX200SSD1
              firmware revision     MU03
    -> Abstracted with "Crucial CT*SSD*" or "Crucial CT*", as the part
       "1024" should vary with its capacity and can be 3 to 4 digits
       for now. I tried the former and confirmed "quirks=0x1<4K>"
       appears, which doesn't appear without adding the entry.


If not, is it sufficient if `camcontrol identify <device>` states
"physical 4096" on "sector size" line for everything in kernel and
related components (i.e., zfs-related ones)?


Regards.

-- 
Tomoaki AOKI    junchoon@dec.sakura.ne.jp