From: Paolo Bonzini <pbonzini@redhat.com>
To: Alex Bligh <alex@alex.org.uk>
Cc: linux-kernel@vger.kernel.org, nbd-general@lists.sf.net,
Paul Clements <Paul.Clements@steeleye.com>,
Andrew Morton <akpm@linux-foundation.org>
Subject: Re: [PATCH 1/3] nbd: support FLUSH requests
Date: Tue, 12 Feb 2013 19:06:09 +0100 [thread overview]
Message-ID: <511A8491.5030407@redhat.com> (raw)
In-Reply-To: <115932E2-48BE-406E-9E75-61D12EB5937A@alex.org.uk>
Il 12/02/2013 18:37, Alex Bligh ha scritto:
> For my education, why remove the FUA stuff?
Because I had no way to test it.
>>> > > Hmmm... the underlying storage could be md/dm RAIDs in which case FUA
>>> > > should be cheaper than FLUSH.
>> >
>> > If someone ever wrote a virtio-blk backend that sits directly ontop
>> > of the Linux block layer that would be true.
> In this case we don't know what the backend is sitting on top of
> a-priori. It might be the current nbd server code, but it might
> not be.
Do you know of any other NBD server than the "official" one and qemu-nbd?
Paolo
next prev parent reply other threads:[~2013-02-12 18:06 UTC|newest]
Thread overview: 20+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-02-12 16:06 [PATCH 0/3] NBD fixes for caching and block device flags Paolo Bonzini
2013-02-12 16:06 ` [PATCH 1/3] nbd: support FLUSH requests Paolo Bonzini
2013-02-12 17:37 ` Alex Bligh
2013-02-12 18:06 ` Paolo Bonzini [this message]
2013-02-12 21:32 ` Andrew Morton
2013-02-13 0:03 ` Alex Bligh
2013-02-13 13:00 ` Paolo Bonzini
2013-02-13 15:55 ` Alex Bligh
2013-02-13 16:02 ` Paolo Bonzini
2013-02-13 17:35 ` Alex Bligh
2013-02-13 0:00 ` Alex Bligh
2013-02-12 22:07 ` Paul Clements
2013-02-12 16:06 ` [PATCH 2/3] nbd: fsync and kill block device on shutdown Paolo Bonzini
2013-02-12 21:41 ` Andrew Morton
2013-02-13 13:05 ` Paolo Bonzini
2013-02-12 22:15 ` Paul Clements
2013-02-12 16:06 ` [PATCH 3/3] nbd: show read-only state in sysfs Paolo Bonzini
2013-02-12 22:16 ` Paul Clements
2013-02-12 21:43 ` [PATCH 0/3] NBD fixes for caching and block device flags Andrew Morton
2013-02-13 17:14 ` [Nbd] " Wouter Verhelst
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