linux-kernel - RE: [PATCH v2] libnvdimm, pmem: Add sysfs notifications to badblocks

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Message-ID: <CS1PR84MB010409051553B970CAF4B9F482C60@CS1PR84MB0104.NAMPRD84.PROD.OUTLOOK.COM>
Date:   Sat, 17 Jun 2017 00:51:21 +0000
From:   "Kani, Toshimitsu" <toshi.kani@....com>
To:     Dan Williams <dan.j.williams@...el.com>
CC:     "Verma, Vishal L" <vishal.l.verma@...el.com>,
        "Knippers, Linda" <linda.knippers@....com>,
        "linux-nvdimm@...ts.01.org" <linux-nvdimm@...ts.01.org>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
Subject: RE: [PATCH v2] libnvdimm, pmem: Add sysfs notifications to badblocks

> On Fri, Jun 16, 2017 at 5:35 PM, Kani, Toshimitsu <toshi.kani@....com> wrote:
> >> On Mon, Jun 12, 2017 at 3:25 PM, Toshi Kani <toshi.kani@....com> wrote:
> >> > Sysfs "badblocks" information may be updated during run-time that:
> >> >  - MCE, SCI, and sysfs "scrub" may add new bad blocks
> >> >  - Writes and ioctl() may clear bad blocks
> >> >
> >> > Add support to send sysfs notifications to sysfs "badblocks" file
> >> > under region and pmem directories when their badblocks information
> >> > is re-evaluated (but is not necessarily changed) during run-time.
> >> >
> >> > Signed-off-by: Toshi Kani <toshi.kani@....com>
> >> > Cc: Dan Williams <dan.j.williams@...el.com>
> >> > Cc: Vishal Verma <vishal.l.verma@...el.com>
> >> > Cc: Linda Knippers <linda.knippers@....com>
> >> > ---
> >> > v2: Send notifications for the clearing case
> >> > ---
> >>
> >> This looks good to me, I've applied it, but I also want to extend the
> >> ndctl unit tests to cover this mechanism.
> >
> > Right.  For the time being, would you mind to use the attached test
> > program for your sanity tests?  It simply monitors sysfs notifications
> > and prints badblocks info...  Sorry for inconvenience.
> >
> > Since I am not familiar with the ndctl unit tests and I am traveling for
> > the rest of the month, I may have to look into it after I am back.
> >
> 
> No worries, I'll take a look at integrating this. Have a nice trip!

Thanks Dan!!  I really appreciate it! 
-Toshi