From mboxrd@z Thu Jan  1 00:00:00 1970
From: NeilBrown <neilb@suse.de>
Subject: Re: Recovery of RAID 6 after three rapid disk events (disks are
 still working)
Date: Tue, 7 Apr 2015 09:33:19 +1000
Message-ID: <20150407093319.29f7909e@notabene.brown>
References: <104310d53affd63c6e13088daa8dd5f2@zeus.bigmiketrading.com>
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To: Mike <mboulter@gmail.com>
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On Mon, 06 Apr 2015 18:28:55 -0500 Mike <mboulter@gmail.com> wrote:

> Hi guys,
>=20
> mdadm 3.2.5, 14 disk RAID 6
>=20
> Had a drive failure Friday.  Two more today in rapid succession.  All=20
> drives seem fully operational.
>=20
> This is roughly 40TB array, I could use your help please to rescue the=20
> array.
>=20
> All members are on partition 2 of each physical disk.
>=20
> # mdadm --assemble --scan

Add "--force" to that line, and it will work.

In this context, "--force" means "yes, I know that some devices are a bit o=
ut
of date and that that if there was a write happening while one of the devic=
es
appeared to fail then there could be some corruption of a few blocks in the
array, but I want all the rest of the data and I promise to be careful and I
won't assume that everything is perfect and I won't blame you if a few files
are lost - just do what you can.  Please."

NeilBrown

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