Re: [Qemu-devel] [PATCH v4] This patch adds support for a new block device type called "vxhs".

[Eric Blake]

On 10/29/2016 01:47 AM, Ashish Mittal wrote:
> Source code for the qnio library that this code loads can be downloaded from:
> https://github.com/MittalAshish/libqnio.git

For now, just an interface review:

> 
> Sample command line using the JSON syntax:
> ./qemu-system-x86_64 -name instance-00000008 -S -vnc 0.0.0.0:0 -k en-us
> -vga cirrus -device virtio-balloon-pci,id=balloon0,bus=pci.0,addr=0x5
> -msg timestamp=on
> 'json:{"driver":"vxhs","vdisk_id":"c3e9095a-a5ee-4dce-afeb-2a59fb387410",

This doesn't match the code, which spelled it "vdisk-id".

> "server":{"host":"172.172.17.4","port":"9999"}}'
> 
> Sample command line using the URI syntax:
> qemu-img convert -f raw -O raw -n
> /var/lib/nova/instances/_base/0c5eacd5ebea5ed914b6a3e7b18f1ce734c386ad
> vxhs://192.168.0.1:9999/c6718f6b-0401-441d-a8c3-1f0064d75ee0
> 
> Signed-off-by: Ashish Mittal <address@hidden>
> ---

> +++ b/qapi/block-core.json
> @@ -1704,12 +1704,13 @@
>  # @host_device, @host_cdrom: Since 2.1
>  # @gluster: Since 2.7
>  # @nbd: Since 2.8
> +# @vxhs: Since 2.8

Please rebase on top of the latest block pull request:
https://lists.gnu.org/archive/html/qemu-devel/2016-10/msg08089.html

In particular, your patch should look something like:

-# @nbd, @nfs, @replication, @ssh: Since 2.8
+# @nbd, @nfs, @replication, @ssh, @vxhs: Since 2.8

>  #
>  # Since: 2.0
>  ##
>  { 'enum': 'BlockdevDriver',
>    'data': [ 'archipelago', 'blkdebug', 'blkverify', 'bochs', 'cloop',
> -            'dmg', 'file', 'ftp', 'ftps', 'gluster', 'host_cdrom',
> +            'dmg', 'file', 'ftp', 'ftps', 'gluster', 'host_cdrom', 'vxhs',
>              'host_device', 'http', 'https', 'luks', 'nbd', 'null-aio',
>              'null-co', 'parallels', 'qcow', 'qcow2', 'qed', 'quorum', 'raw',
>              'replication', 'tftp', 'vdi', 'vhdx', 'vmdk', 'vpc', 'vvfat' ] }

Please keep this enum sorted alphabetically (your entry should be after
vvfat, not in the random middle).

> @@ -2238,6 +2239,20 @@
>              '*export': 'str',
>              '*tls-creds': 'str' } }
>  
> +# @BlockdevOptionsVxHS

Missing a leading ## marker.

> +#
> +# Driver specific block device options for VxHS
> +#
> +# @vdisk-id:    UUID of VxHS volume
> +#
> +# @server:      vxhs server IP, port
> +#
> +# Since: 2.8
> +##
> +{ 'struct': 'BlockdevOptionsVxHS',
> +  'data': { 'vdisk-id': 'str',
> +            'server': 'InetSocketAddress' } }
> +
>  ##
>  # @BlockdevOptions
>  #
> @@ -2302,7 +2317,8 @@
>        'vhdx':       'BlockdevOptionsGenericFormat',
>        'vmdk':       'BlockdevOptionsGenericCOWFormat',
>        'vpc':        'BlockdevOptionsGenericFormat',
> -      'vvfat':      'BlockdevOptionsVVFAT'
> +      'vvfat':      'BlockdevOptionsVVFAT',
> +      'vxhs':       'BlockdevOptionsVxHS'
>    } }
>  
>  ##
> 

-- 
Eric Blake   eblake redhat com    +1-919-301-3266
Libvirt virtualization library http://libvirt.org

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