On Fri, 2020-05-15 at 19:57 -0400, Todd Zullinger wrote:
> George N. White III wrote:
> > On Fri, 15 May 2020 at 18:41, Patrick O'Callaghan <pocallag...@gmail.com>
> > wrote:
> > 
> > > On Fri, 2020-05-15 at 22:35 +0100, Patrick O'Callaghan wrote:
> > > > > echo check > /sys/block/md127/md/sync_action
> > > 
> > > That's giving "permission denied" even with sudo, and with setenforce
> > > set to 'off'.
> > > 
> > 
> > This can happend if you run :
> > 
> >      $ sudo echo check > /sys/block/md127/md/sync_action
> > 
> > which fails because redirection is done by the shell before the
> > sudo command runs.  Use:
> > 
> >     $ sudo bash -c "echo check > /sys/block/md127/md/sync_action"
> 
> Or yet another way (just one more of many, I'm sure):
> 
>     $ echo check | sudo tee /sys/block/md127/md/sync_action
> 
> Anyway, sorry to pipe up with nothing directly related to
> the more important issue at hand.  I just enjoy learning
> different ways to tackle various tasks in the shell.  I've
> probably learned more of them from short tangents like this
> than anywhere else. :)
> 
> Best of luck getting the array back in solid shape Patrick!

Thanks Todd. I'll report on progress if and when there is any :-)

poc
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