Re: [Qemu-devel] [PATCH v3] block: Introduce "null" driver

[Markus Armbruster]

Fam Zheng <address@hidden> writes:

> On Thu, 08/28 16:23, Eric Blake wrote:
>> On 08/27/2014 11:53 PM, Fam Zheng wrote:
>> > This is an analogue to Linux null_blk. It can be used for testing block
>> > device emulation and general block layer functionalities such as
>> > coroutines and throttling, where disk IO is not necessary or wanted.
>> > 
>> > Use null:// for AIO version, and null-co:// for coroutine version.
>> > 
>> > Signed-off-by: Fam Zheng <address@hidden>
>> > 
>> > ---
>> 
>> > +++ b/qapi/block-core.json
>> > @@ -1150,7 +1150,8 @@
>> >    'data': [ 'archipelago', 'file', 'host_device', 'host_cdrom', 
>> > 'host_floppy',
>> >              'http', 'https', 'ftp', 'ftps', 'tftp', 'vvfat', 'blkdebug',
>> >              'blkverify', 'bochs', 'cloop', 'cow', 'dmg', 'parallels', 
>> > 'qcow',
>> > -            'qcow2', 'qed', 'raw', 'vdi', 'vhdx', 'vmdk', 'vpc', 'quorum' 
>> > ] }
>> > +            'qcow2', 'qed', 'raw', 'vdi', 'vhdx', 'vmdk', 'vpc', 'quorum',
>> > +            'null' ] }
>> 
>> As mentioned elsewhere, you probably want 'null' AND 'null-co'.  Bummer
>> that this list is mostly alphabetical, but that 'quorum' and 'null' are
>> out of order.
>
> I'll add null-co to the list. But this list is a bit far from alphabetical:
>
> archipelago, ..., vvfat, blkdebug,...

Two sensible ways to organize lists of things: keep it sorted
alphabetically by name, or order by some ontology.  Since ontology is
neither obvious nor relevant here, I'd go for alphabetic.

Separate cleanup patch, please.