From: keith.busch@linux.intel.com (Keith Busch)
Subject: BLKZEROOUT ioctl and WriteZero opcode
Date: Mon, 7 May 2018 09:14:42 -0600 [thread overview]
Message-ID: <20180507151442.GC20686@localhost.localdomain> (raw)
In-Reply-To: <CAPrnrPA9nSSghkHnSRKdxE=+qBEZZ3Rg1c3KcxZhpEwh19EYNQ@mail.gmail.com>
On Mon, May 07, 2018@03:17:56PM +0300, Eyal BenDavid wrote:
> Thanks Keith,
>
> So:
> BLKZEROOUT is not implemented by NVME passthru + Write Zeroes (for now).
> BLKZEROOUT Is implemented by DSM provided the device guarantees 0's
> are returned after "Unmap"
> In order to to zero out a range, NVMe passthru with Write Zeroes
> opcode must be used.
>
> Is it correct?
Yes, that is correct.
next prev parent reply other threads:[~2018-05-07 15:14 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-05-03 15:15 BLKZEROOUT ioctl and WriteZero opcode אייל בן דוד
2018-05-04 20:05 ` Keith Busch
2018-05-07 12:17 ` Eyal BenDavid
2018-05-07 15:14 ` Keith Busch [this message]
2018-05-07 16:14 ` Eyal BenDavid
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