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From: "R. Schwartz" <schwrtz@protonmail.ch>
To: Andrei Borzenkov <arvidjaar@gmail.com>
Cc: "linux-btrfs@vger.kernel.org" <linux-btrfs@vger.kernel.org>
Subject: Re: Should nossd mount option be used for an HDD detected as non-rotational?
Date: Sat, 13 Jul 2019 11:18:38 +0000
Message-ID: <JGPEfVI4qK7tJSXINtren_lHwKz90PTtEuDZg6Et9gj69Nm4ZbeWCtxlOrIZMzGwGymaOWv8UeQUso2kGhowebrKSyMUtKfxQawf_NcoDXQ=@protonmail.ch> (raw)
In-Reply-To: <9c872fcc-18a2-0936-f950-f1a74806da73@gmail.com>

On Saturday, July 13, 2019 11:06 AM, Andrei Borzenkov <arvidjaar@gmail.com> wrote:
>
> kernel sets non-rotational flag according to Medium Rotation Rate field
> in Block Device Characteristics VPD page (0xb1). What
>
> sg_vpd -p bdc /dev/xxx
>
> says?

Block device characteristics VPD page (SBC):
  Non-rotating medium (e.g. solid state)
  Product type: Not specified
  WABEREQ=0
  WACEREQ=0
  Nominal form factor: 2.5 inch
  ZONED=0
  RBWZ=0
  BOCS=0
  FUAB=0
  VBULS=0
  DEPOPULATION_TIME=0 (seconds)

Hmm, it also says 2.5 inch while it's a 3.5 inch drive.
Could be the connector though, methinks.

(Sorry, resent adding CC: ML)

      reply index

Thread overview: 3+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2019-07-13  9:22 R. Schwartz
2019-07-13 11:06 ` Andrei Borzenkov
2019-07-13 11:18   ` R. Schwartz [this message]

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