[openstack-dev] [nova] Device tagging: rebuild config drive upon instance reboot to refresh metadata on it

Jeremy Stanley fungi at yuggoth.org
Mon Feb 20 16:50:44 UTC 2017

On 2017-02-20 15:46:43 +0000 (+0000), Daniel P. Berrange wrote:
> The data is exposed either as a block device or as a character device
> in Linux - which one depends on how the NVDIMM is configured. Once
> opening the right device you can simply mmap() the FD and read the
> data. So exposing it as a file under sysfs doesn't really buy you
> anything better.

Oh! Fair enough, if you can already access it as a character device
then I agree that solves the use cases I was considering.
Jeremy Stanley

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