Re: Inactive raid1 partition failure

[Chris Murphy]

On Tue, Aug 4, 2015 at 9:02 PM, Alex  wrote:
> Hi,
> > > I panicked a bit, and didn't want to do something stupid (like mdadm
> > > -C) before passing it by at least one other person.
> >
> > I definitely suggest you make a backup of each device superblock and
> > distribute it somewhere safe in the unlikely event two devices in a
> > mirrored array stop cooperating. The superblocks do come in handy from
> > time to time when they can't be acquired once problems happen.
>
> Do you have any suggestions on how to do this?

mdadm -E for each device, and point it to a file using >> - for the
purposes of the backup you could write all devices to one file, it's
up to you.