From mboxrd@z Thu Jan 1 00:00:00 1970 From: NeilBrown Subject: Re: not enough operational mirrors Date: Mon, 22 Sep 2014 15:47:17 +1000 Message-ID: <20140922154717.6cd3cab2@notabene.brown> References: Mime-Version: 1.0 Content-Type: multipart/signed; micalg=pgp-sha1; boundary="Sig_/rpiHfABrRb6/3I1mMI2TaDz"; protocol="application/pgp-signature" Return-path: In-Reply-To: Sender: linux-raid-owner@vger.kernel.org To: Ian Young Cc: linux-raid@vger.kernel.org List-Id: linux-raid.ids --Sig_/rpiHfABrRb6/3I1mMI2TaDz Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: quoted-printable On Sun, 21 Sep 2014 22:32:19 -0700 Ian Young wrote: > My 6-drive software RAID 10 array failed. The individual drives > failed one at a time over the past few months but it's been an > extremely busy summer and I didn't have the free time to RMA the > drives and rebuild the array. Now I'm wishing I had acted sooner > because three of the drives are marked as removed and the array > doesn't have enough mirrors to start. I followed the recovery > instructions at raid.wiki.kernel.org and, before making things any > worse, saved the status using mdadm --examine and consulted this > mailing list. Here's the status: >=20 > http://pastebin.com/KkV8e8Gq >=20 > I can see that the event counts on sdd2 and sdf2 are significantly far > behind, so we can consider that data too old. sdc2 is only behind by > two events, so any data loss there should be minimal. If I can make > the array start with sd[abce]2 I think that will be enough to mount > the filesystem, back up my data, and start replacing drives. How do I > do that? Use the "--force" option with "--assemble". NeilBrown --Sig_/rpiHfABrRb6/3I1mMI2TaDz Content-Type: application/pgp-signature; name=signature.asc Content-Disposition: attachment; filename=signature.asc -----BEGIN PGP SIGNATURE----- Version: GnuPG v2.0.22 (GNU/Linux) iQIVAwUBVB+35Tnsnt1WYoG5AQLntg/8CEfNSaqpCpaeAx/GVHRwWWG3gU7VjHCL OiwoCmKcwLdMg3YJm/o+ijv8AtOcxyQHJ5HLbMuMdr9dS2Ni1Xw0JWiuyh7YxwXm Y9pI+aIbCAedsU2+ZfB3b9aS0Qgqo9waclb9w2Kz3AvqcM+EaEFG3Y5eg3Oy1bGt tA9R9tP/meNAT5O72BTZmjH6iHKph3GAB9DQnjL5DOBGKsB5Mvwq11c0o1/TtX2q mAJviFJqKRTfNmKZ1rd9uHeheE6kr1g8uBCMuhSk+vNzfm+yja9mfj7m3MXNIeAL Ri9tmQ4rC1u+a/HtvQCPX8XaN14zjC+irfp8VRCnZEWLDxCdG9xWl2y+19Zn3AUw iElf+EpW78yzbl/K9dy9yaIlwGYbd0uzLoEj3i2nT2uzGi/2+N1kPRHwDPogNlSe 3Trd6LgnOh2u1SKyGEDRELzOz84STHDBl6D9f5enCNGxzHaZrALxYUnqXh8UR//f Vsp+eAS8tgjCYIV+qkR6Y5fGIU4li4bV6lRy5GwMvJTEZyDipgNxSRMyPFHJKG7a 4BduzsiK+rYsX/fzrp1hTWAfe6HPTqJeOmfK470lfqrl4Zj8YS4pWp1A2QtaYpOi TEgHFfykSHeuExQ7uHVLNSjD7dZoeKsXmcgiT/WY+qyU9dRPC1w8wP0aKjygJCQG MHSln5rY8p0= =G2gd -----END PGP SIGNATURE----- --Sig_/rpiHfABrRb6/3I1mMI2TaDz--