From: Alex Bligh <alex@alex.org.uk>
To: "Denis V. Lunev" <den@openvz.org>
Cc: "nbd-general@lists.sourceforge.net"
<nbd-general@lists.sourceforge.net>,
Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com>,
Alex Bligh <alex@alex.org.uk>,
"qemu-devel@nongnu.org" <qemu-devel@nongnu.org>,
Roman Kagan <rkagan@virtuozzo.com>,
"Stefan stefanha@redhat. com" <stefanha@redhat.com>,
"Fam famz@redhat. com" <famz@redhat.com>
Subject: Re: [Qemu-devel] [Nbd] SUMMARY: Re: [RFC 1/1] nbd (specification): add NBD_CMD_WRITE_ZEROES command
Date: Thu, 18 Feb 2016 19:29:45 +0000 [thread overview]
Message-ID: <E7A47DF8-3466-4A09-BBE7-A55DDF4516D5@alex.org.uk> (raw)
In-Reply-To: <56C5FDF4.4060101@openvz.org>
On 18 Feb 2016, at 17:23, Denis V. Lunev <den@openvz.org> wrote:
> - ability to skip zeroes during read operation, i.e. something like
> READ2 command
> which will return vector of chunks as a reply
...
> If there are no objections I'll sum this up and come with a
> specification draft.
If you are fixing READ2 to allow a vector based reply, please also
consider allowing an error to be part of that vector. The protocol
currently has an issue where it is non-obvious how to return
an error encountered midway through a long read where some
data has already been sent to the client (from memory
i.e. unless it's already been fixed).
--
Alex Bligh
next prev parent reply other threads:[~2016-02-18 19:29 UTC|newest]
Thread overview: 22+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-02-17 18:10 [Qemu-devel] [RFC 1/1] nbd (specification): add NBD_CMD_WRITE_ZEROES command Denis V. Lunev
2016-02-17 20:58 ` Eric Blake
2016-02-18 4:46 ` Denis V. Lunev
2016-02-18 8:30 ` Denis V. Lunev
2016-02-18 9:18 ` Roman Kagan
2016-02-18 10:36 ` Denis V. Lunev
2016-02-18 16:35 ` Eric Blake
2016-02-18 17:23 ` [Qemu-devel] SUMMARY: " Denis V. Lunev
2016-02-18 17:55 ` Eric Blake
2016-02-18 19:29 ` Alex Bligh [this message]
2016-02-19 7:12 ` Denis V. Lunev
2016-02-19 8:56 ` Vladimir Sementsov-Ogievskiy
2016-02-19 9:11 ` Daniel P. Berrange
2016-02-18 12:14 ` [Qemu-devel] " Daniel P. Berrange
2016-02-18 14:05 ` Denis V. Lunev
2016-02-18 8:09 ` Alex Bligh
2016-02-18 8:34 ` Denis V. Lunev
2016-03-04 8:49 ` [Qemu-devel] [Nbd] " Wouter Verhelst
2016-03-04 9:54 ` Kevin Wolf
2016-03-04 14:03 ` Paolo Bonzini
2016-03-06 10:28 ` Wouter Verhelst
2016-03-06 18:54 ` Denis V. Lunev
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