Re: [Nbd] [PATCH 1/3] nbd: support FLUSH requests
- To: Alex Bligh <alex@...872...>
- Cc: nbd-general@...72..., Paul Clements <Paul.Clements@...124...>, linux-kernel@...25..., Andrew Morton <akpm@...133...>
- Subject: Re: [Nbd] [PATCH 1/3] nbd: support FLUSH requests
- From: Paolo Bonzini <pbonzini@...696...>
- Date: Tue, 12 Feb 2013 19:06:09 +0100
- Message-id: <511A8491.5030407@...696...>
- In-reply-to: <115932E2-48BE-406E-9E75-61D12EB5937A@...872...>
- References: <1360685171-3792-1-git-send-email-pbonzini@...696...> <1360685171-3792-2-git-send-email-pbonzini@...696...> <115932E2-48BE-406E-9E75-61D12EB5937A@...872...>
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
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