From: James Bottomley <James.Bottomley@HansenPartnership.com>
To: Keith Busch <kbusch@kernel.org>,
Muhammad Ahmad <muhammad.ahmad@seagate.com>
Cc: linux-fsdevel@vger.kernel.org, linux-block@vger.kernel.org,
linux-scsi@vger.kernel.org, Tim Walker <tim.t.walker@seagate.com>
Subject: Re: [LSF/MM/BPF TOPIC] Multi-actuator HDDs
Date: Tue, 11 Feb 2020 11:18:59 -0800 [thread overview]
Message-ID: <1581448739.3519.5.camel@HansenPartnership.com> (raw)
In-Reply-To: <20200210182645.GA2535@dhcp-10-100-145-180.wdl.wdc.com>
On Mon, 2020-02-10 at 10:26 -0800, Keith Busch wrote:
> On Mon, Feb 10, 2020 at 12:01:13PM -0600, Muhammad Ahmad wrote:
> > For NVMe HDDs are namespaces the appropriate abstraction of the
> > multiple actuators?
>
> This sounds closer to what "NVM Sets" defines rather than namespaces.
> Section 4.9 from NVMe 1.4 spec has additional details if interested.
I've got to say that since multi-actuator devices will always be
spinning rust, bending NVMe concepts to fit them seems horribly wrong
... as does adding any rotational devices to NVMe: You just built a
clean NVM stack ... let's not contaminate it.
James
next prev parent reply other threads:[~2020-02-11 19:19 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-02-10 18:01 [LSF/MM/BPF TOPIC] Multi-actuator HDDs Muhammad Ahmad
2020-02-10 18:26 ` Keith Busch
2020-02-11 19:18 ` James Bottomley [this message]
2020-02-10 21:52 ` Dave Chinner
2020-02-11 19:23 ` Tim Walker
2020-03-03 16:40 ` Muhammad Ahmad
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