Re: [PATCH v3 3/8] nvmet: implement namespace identify descriptor list

[Johannes Thumshirn]

On 06/02/2017 03:46 PM, Sagi Grimberg wrote:
>> +    uuid_be            uuid;
> 
> This should be uuid_le to match the rest of NVMe.

Ahm, are you sure?
$ PAGER= git grep -E uuid_\(l\|b\)e drivers/nvme
drivers/nvme/host/fabrics.c:61:	uuid_be_gen(&host->id);
drivers/nvme/host/fabrics.c:78:	uuid_be_gen(&host->id);
drivers/nvme/host/fabrics.c:398:	memcpy(&data->hostid,
&ctrl->opts->host->id, sizeof(uuid_be));
drivers/nvme/host/fabrics.c:457:	memcpy(&data->hostid,
&ctrl->opts->host->id, sizeof(uuid_be));
drivers/nvme/host/fabrics.h:39:	uuid_be			id;
drivers/nvme/host/fc.c:882:		min_t(size_t, FCNVME_ASSOC_HOSTID_LEN,
sizeof(uuid_be)));
drivers/nvme/target/admin-cmd.c:324:	memcpy(&id->nguid, &ns->nguid,
sizeof(uuid_le));
drivers/nvme/target/configfs.c:328:	if (uuid_be_to_bin(page, &ns->uuid))
drivers/nvme/target/nvmet.h:49:	uuid_be			uuid;

And RFC4122 4.1.2 says MSB first as well.

> 
> Also, it would be useful to generate a random default with uuid_le_gen()
> for a better out-of-the-box experience.

Yep, sounds reasonable.

-- 
Johannes Thumshirn                                          Storage
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