Re: [PATCH v4] ndctl: add clear error support for ndctl

["Kani, Toshimitsu" <toshi.kani@hpe.com>]

On Tue, 2017-05-02 at 09:18 -0700, Dave Jiang wrote:
> 
> On 05/01/2017 05:16 PM, Kani, Toshimitsu wrote:
> > On Mon, 2017-05-01 at 16:33 -0700, Dave Jiang wrote:
> >  :
> > > +EXAMPLES
> > > +--------
> > > +
> > > +Clear poison (bad blocks) for the provided device
> > > +[verse]
> > > +ndctl clear-error -f /dev/dax0.0 -s 0 -l 8
> > > +
> > > +Clear poison (bad blocks) at block offset 0 for 8 blocks on
> > > device
> > > /dev/dax0.0
> > > +
> > > +OPTIONS
> > > +-------
> > > +-f::
> > > +--file::
> > > +The device/file to be cleared of poison (bad blocks).
> > > +
> > > +-s::
> > > +--start::
> > > +The offset where the poison (bad block) starts for this
> > > device.
> > > +Typically this is acquired from the sysfs badblocks file.
> > > +
> > > +-l::
> > > +--len::
> > > +The number of badblocks to clear in size of 512 bytes
> > > increments. The
> > > +length must fit within the badblocks range. If the length
> > > exceeds the
> > > +badblock range or is 0, the command will fail.
> > 
> > Actually, I am seeing '-l 0' works just like '-l 1'.
> 
> Oh now I remembered that Vishal requested that no length does 1 block
> clear. Do you want me to correct documentation or behavior?

What is the reason behind of his request?

Thanks,
-Toshi
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