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Subject: Re: [Patch v2 2/3] Drivers: hv: add Azure Blob driver
To:     longli@linuxonhyperv.com, linux-kernel@vger.kernel.org,
        linux-hyperv@vger.kernel.org
Cc:     Long Li <longli@microsoft.com>, Jonathan Corbet <corbet@lwn.net>,
        "K. Y. Srinivasan" <kys@microsoft.com>,
        Haiyang Zhang <haiyangz@microsoft.com>,
        Stephen Hemminger <sthemmin@microsoft.com>,
        Wei Liu <wei.liu@kernel.org>, Dexuan Cui <decui@microsoft.com>,
        Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
        Bjorn Andersson <bjorn.andersson@linaro.org>,
        Hans de Goede <hdegoede@redhat.com>,
        Dan Williams <dan.j.williams@intel.com>,
        Maximilian Luz <luzmaximilian@gmail.com>,
        Mike Rapoport <rppt@kernel.org>,
        Ben Widawsky <ben.widawsky@intel.com>,
        Jiri Slaby <jirislaby@kernel.org>,
        Andra Paraschiv <andraprs@amazon.com>,
        Siddharth Gupta <sidgup@codeaurora.org>,
        Hannes Reinecke <hare@suse.de>, linux-doc@vger.kernel.org
References: <1624689020-9589-1-git-send-email-longli@linuxonhyperv.com>
 <1624689020-9589-3-git-send-email-longli@linuxonhyperv.com>
From:   "Enrico Weigelt, metux IT consult" <lkml@metux.net>
Message-ID: <ff05bb0d-bcad-8445-d410-7756e7502352@metux.net>
Date:   Mon, 28 Jun 2021 19:12:40 +0200
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On 26.06.21 08:30, longli@linuxonhyperv.com wrote:

Hi,

> From: Long Li <longli@microsoft.com>
> 
> Azure Blob storage provides scalable and durable data storage for Azure.
> (https://azure.microsoft.com/en-us/services/storage/blobs/)

It's a bit hard to quickly find out the exact semantics of that (w/o 
fully reading the library code ...).  :(

> This driver adds support for accelerated access to Azure Blob storage. As an
> alternative to REST APIs, it provides a fast data path that uses host native
> network stack and secure direct data link for storage server access.

I don't think that yet another misc device with some very specific API
is a good thing. We should have a more generic userland interface.

Maybe a file system ?

OTOH, I've been considering adding other kind of blob stores (eg. venti
and similar things) and inventing an own subsys for that, so we'd have
some more universal interface. Unfortunately always been busy with other
things.

Maybe we should go that route instead of introducing yet another device
specific uapi.


--mtx

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Enrico Weigelt, metux IT consult
Free software and Linux embedded engineering
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