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From: Dan Williams <dan.j.williams@intel.com>
Date: Thu, 29 Jun 2017 15:58:48 -0700
Message-ID: <CAPcyv4gnkpWXJ7jOJ7r0kWLKoLfuqJzdHTjANBUPztyTWUrOjA@mail.gmail.com>
Subject: Re: [PATCH v4 12/16] libnvdimm, nfit: enable support for volatile ranges
To: Linda Knippers <linda.knippers@hpe.com>
Cc: "linux-nvdimm@lists.01.org" <linux-nvdimm@lists.01.org>,
        Jan Kara <jack@suse.cz>, Matthew Wilcox <mawilcox@microsoft.com>,
        X86 ML <x86@kernel.org>,
        "linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>,
        Al Viro <viro@zeniv.linux.org.uk>,
        linux-fsdevel <linux-fsdevel@vger.kernel.org>,
        Christoph Hellwig <hch@lst.de>
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On Thu, Jun 29, 2017 at 3:49 PM, Linda Knippers <linda.knippers@hpe.com> wrote:
>> The parent region of the namespace will have a 'volatile' type:
>>
>> # cat /sys/bus/nd/devices/region0/devtype
>> nd_volatile
>
>
> If all I know is the /dev/pmem device name, how do I find that?
>

    cat $(readlink -f /sys/block/pmem0/device)/../devtype

...this is where 'ndctl list' will get the information.