From mboxrd@z Thu Jan 1 00:00:00 1970 From: NeilBrown Subject: Re: RAIS5 Rebuild Help - Possible Data Offset Date: Mon, 31 Mar 2014 19:37:04 +1100 Message-ID: <20140331193704.609a7f1f@notabene.brown> References: <20140131102551.GA2425@cthulhu.home.robinhill.me.uk> <20140331172953.3f37f6c2@notabene.brown> <20140331181227.69c4e583@notabene.brown> Mime-Version: 1.0 Content-Type: multipart/signed; micalg=PGP-SHA1; boundary="Sig_/PGNYY69UNSweIjjkeGkSQHa"; protocol="application/pgp-signature" Return-path: In-Reply-To: Sender: linux-raid-owner@vger.kernel.org To: Yorik Cc: linux-raid@vger.kernel.org List-Id: linux-raid.ids --Sig_/PGNYY69UNSweIjjkeGkSQHa Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: quoted-printable On Mon, 31 Mar 2014 15:24:07 +0800 Yorik wrote: > Hi Neil >=20 > Thanks for your quick reply. :) Output as follows. and yes I agree. > sdf is strange, also some devices think the Array has different number > of devices Active.. It all got quite muddled up at the time of > failure. So..... sdf thinks Raid Devices : 6 others think Raid Devices : 8 So that's not going to work. However if we just ignore sdf, then sdg and sdi thinkg Array UUID : a5cb0ced:fee37e80:bb291f1a:c5b2f600 while the rest think: Array UUID : e32ad2c6:5f99dd8f:2572c3a8:c485db00 So you have at most 5 device which think they are the same array, which isn't enough for an 8-device RAID6. It looks like you have tried to --create the array several times, at Creation Time : Tue Feb 4 00:28:54 2014 Creation Time : Tue Feb 4 00:33:56 2014 Creation Time : Tue Feb 4 00:38:19 2014 to be precise. Your only real chance is to find out the real geometry of the array before all the problem happened, and create it properly... It might be worth checking sda sdb and sdc (with out partitions) as well as sdd1 sde1 sdf1 sdg1 sdi1 to see if there is anything there. But if you have backups or some other way to regenerate the data ...... NeilBrown --Sig_/PGNYY69UNSweIjjkeGkSQHa Content-Type: application/pgp-signature; name=signature.asc Content-Disposition: attachment; filename=signature.asc -----BEGIN PGP SIGNATURE----- Version: GnuPG v2.0.22 (GNU/Linux) iQIVAwUBUzkpMTnsnt1WYoG5AQKHaBAAv+KcAaWZglmx7oznqTAMKnsVTCAA8hqD M1KdeYbWimMxwQ0+aXTCSc4xg2acuJvUlzABY5cC4YHsRGzH6YF7QuGfPLaYAdef k+9jnQMWxpJaCABdejfz3JxyJ7HS+HeGYTn5QrBaXh2Q1PUDdAN/FcbTPwEKyyIQ mjY81sosjn/AkZ8qD25ydryu8wU5A2O1AWZ7bNpwjjuOIFeTyUqL+75K2puxmNiI 0er4wF2F6nnjdnRx79KQCkPGsfHNNxWP/MAqTn7AxzPfU2pcPKhMiIqjaGBpkxGN xH1OFD+P7a91qUjAn4xOfugvM9LACswrR9OLJBoJUk8pJRtaZ0qK499T3bs51o/L Rr9lE3RSDgTKv9ZpgQyIURHsTL7Adyh7tiBBkUsAwQoSW+eNopVa1hEFd8wgAT5X iY816DqDaJtFbFuBf4V4WtHnwUhPbmptGhQ9dbI1vX7yzzc3NeZJkKpnNIaQ3bMg 2PYscVfNNC7Tk+lCJM8nkRhnlO+7Nn/HDgGmehuLugJY8bPE50A7OolxlOGaKDB1 uOluC1eqEJoIcvdEGoVKixpjnW8cEx3taz6DcZVMIPqStecV+xO/ULq+74J4T5xV OiE7gyTeEU4RoWSSrbj7kYUwBUWEajrqr2wvO7IO6k1ZXrghsWgWDgaVUplekXIf /QPIAo11wNA= =EBJl -----END PGP SIGNATURE----- --Sig_/PGNYY69UNSweIjjkeGkSQHa--