Re: mdadm: recovering from an aborted reshape op - to ensure at least one email gets through!

[NeilBrown <neilb@suse.de>]

On Sun, 13 Feb 2011 16:36:15 -0800 (PST) Gavin Flower <gavinflower@yahoo.com>
wrote:

> Hi Neil,
> 
> You last command seems to be doing something useful, after I had given it the original backup file.
> 
> I will update you when it finishes...
> 
> Will you still want the diagnostic output?  I am happy to send it, if you think it will be useful.

No, not necessary.

I guess whatever boot script tried to assemble the device didn't know
to tell it about a backup file and so the assembly didn't complete,
leaving you to pick up the pieces, but with no clear message explaining
what the pieces were...


I hope that in a few releases we can largely do away with the backup
file so I probably won't put much effort into trying to make this all
run more seamlessly.


> 
> If you want me to run other diagnostics, please let me know.
> 
> You deserve a huge bonus on top of the exorbitant (of zero dollars and zero cents) fee I am paying you! -)

:-)


Thanks,
NeilBrown


> 
> 
> Thanks,
> Gavin
> --
> All Adults share the Responsibility
> to help Raise Today's Children,
> for they are Tomorrow's Society!
> 
> 
> --- On Mon, 14/2/11, NeilBrown <neilb@suse.de> wrote:
> 
> > From: NeilBrown <neilb@suse.de>
> > Subject: Re: mdadm: recovering from an aborted reshape op - to ensure at least one email gets through!
> > To: "Gavin Flower" <gavinflower@yahoo.com>
> > Cc: linux-raid@vger.kernel.org
> > Date: Monday, 14 February, 2011, 13:00
> > On Sun, 13 Feb 2011 15:10:36 -0800
> > (PST) Gavin Flower <gavinflower@yahoo.com>
> > wrote:
> > 
> > > Hi Neil,
> > > 
> > > I'll send this now.
> > > 
> > > My previous 2 attempts failed.
> > > 
> > > I had the first bounce due to HTML, but no errors
> > reported for my second attempt.
> > > 
> > > I replied to you blog post.
> > > 
> > 
> > Yes - vger.kernel.org doesn't like html.
> > Normal attachments should work - and you should get a
> > bounce-message
> > if there is something odd.
> > But this and the following messages did get through.
> > 
> > For those on linux-raid: the background is that a reshape
> > for a RAID6
> > to change chunksize was interrupted by the admin killing
> > the mdadm
> > which monitors the reshape.  Then after a reboot the
> > array isn't working 
> > properly.
> > 
> > When I asked for "mdadm -Evs" I should have asked for an
> > extra 'v' - I keep
> > forgetting that.
> > However for now:  what would help is:
> > 
> >  mdadm -S /dev/md1
> >  mdadm -E /dev/md[abcde]2
> >  mdadm -Av /dev/md1 /dev/sd[abcde]2
> >  dmesg | tail -50
> > 
> > capture all of the output and post that.
> > 
> > Thanks,
> > NeilBrown
> > 
> > 
> 
> 
>       

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