Re: [Nbd] [PATCH] nbd: set the logical and physical blocksize properly

To: Josef Bacik <jbacik@...2204...>
Cc: axboe@...161..., linux-block@...25..., kernel-team@...2204..., "nbd-general@lists.sourceforge.net" <nbd-general@lists.sourceforge.net>
Subject: Re: [Nbd] [PATCH] nbd: set the logical and physical blocksize properly
From: Alex Bligh <alex@...872...>
Date: Fri, 10 Feb 2017 21:07:20 +0100
Message-id: <59F046CB-9EE6-4E45-A06D-3F352218E91B@...872...>
In-reply-to: <1486750004-2988-1-git-send-email-jbacik@...2204...>
References: <1486750004-2988-1-git-send-email-jbacik@...2204...>

> On 10 Feb 2017, at 19:06, Josef Bacik <jbacik@...2204...> wrote:
> 
> We noticed when trying to do O_DIRECT to an export on the server side
> that we were getting requests smaller than the 4k sectorsize of the
> device.  This is because the client isn't setting the logical and
> physical blocksizes properly for the underlying device.  Fix this up by
> setting the queue blocksizes and then calling bd_set_size.

Interesting. Some input into the info extension (re blocksizes) would
definitely be appreciated.

-- 
Alex Bligh

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  - From: Josef Bacik <jbacik@...2204...>

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