From mboxrd@z Thu Jan  1 00:00:00 1970
From: NeilBrown <neilb@suse.de>
Subject: Re: unable to assemble (mostly?) clean array
Date: Mon, 9 Dec 2013 10:55:07 +1100
Message-ID: <20131209105507.0273bf9e@notabene.brown>
References: <CACw0PsYr+u=YqXQJtUBLDzoppXPWCoRRLUqvgPLE4_L+V68iZw@mail.gmail.com>
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To: Christopher Hoover <ch@murgatroid.com>
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On Sun, 8 Dec 2013 15:32:42 -0800 Christopher Hoover <ch@murgatroid.com>
wrote:

> hi folks,
>=20
> what's the safest way to get this array back into r/o mode?
>=20
> thanks,
> -ch
> ch@murgatroid.com
>=20
>=20
> ch@snaggle:~$ sudo mdadm --examine /dev/sd[defg]1 | egrep 'Event|^/dev/sd'
>=20
> /dev/sdd1:
>=20
>          Events : 286024
>=20
> /dev/sde1:
>=20
>          Events : 286011
>=20
> /dev/sdf1:
>=20
>          Events : 286024
>=20
> /dev/sdg1:
>=20
>          Events : 286024
>=20
> ch@snaggle:~$ sudo mdadm --assemble --force  /dev/md0 /dev/sdd1
> /dev/sde1 /sdg1
>=20
> mdadm: cannot open device /sdg1: No such file or directory
>=20
> mdadm: /sdg1 has no superblock - assembly aborted

You missed a "/dev" there!

Did you try just giving all the devices to mdadm and letting it pick the be=
st?

 mdadm --assemble --force /dev/md0 /dev/sd[defg]1

?

NeilBrown

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