From mboxrd@z Thu Jan 1 00:00:00 1970 From: =?UTF-8?B?VMOzdGggQ3NhYmE=?= Subject: Re: convert raid10 to raid0 Date: Thu, 08 Jul 2010 10:27:46 +0200 Message-ID: <4C358C02.7020109@i3rendszerhaz.hu> References: <4C34D5AD.5020305@i3rendszerhaz.hu> <20100708085034.2bc8272e@notabene.brown> <4C35852E.5060400@i3rendszerhaz.hu> Mime-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: QUOTED-PRINTABLE Return-path: In-Reply-To: <4C35852E.5060400@i3rendszerhaz.hu> Sender: linux-raid-owner@vger.kernel.org To: Neil Brown Cc: linux-raid@vger.kernel.org List-Id: linux-raid.ids 2010.07.08. 9:58 keltez=C3=A9ssel, T=C3=B3th Csaba =C3=ADrta: > 2010.07.08. 0:50 keltez=C3=A9ssel, Neil Brown =C3=ADrta: >> Then after you create the raid0, use the same command >> mdadm -E /dev/sdc6 >> to check the Data Offset again and make sure it is the same. >> I suspect it will be, so everything will be fine. >> However if it isn't don't try to access the array. Post the detail= s and I'll >> figure out what to do next. >> >=20 > It doesn't work, [...] forget to explain what i did: my idea was to create a new array with --assume-clean, than kick out the knowed bad members: minerva data-bck # mdadm --create /dev/md5 --assume-clean --metadata=3D= 1.1 --level=3D10 --raid-devices=3D4 /dev/sdb6 /dev/sda6 /dev/sdc6 /dev/sdd6 mdadm: /dev/sdb6 appears to be part of a raid array: level=3Draid10 devices=3D4 ctime=3DThu Jul 8 09:47:43 2010 mdadm: /dev/sda6 appears to be part of a raid array: level=3Draid10 devices=3D4 ctime=3DThu Jul 8 09:47:43 2010 mdadm: /dev/sdc6 appears to be part of a raid array: level=3Draid10 devices=3D4 ctime=3DThu Jul 8 09:47:43 2010 mdadm: /dev/sdd6 appears to be part of a raid array: level=3Draid10 devices=3D4 ctime=3DThu Jul 8 09:47:43 2010 Continue creating array? yes mdadm: array /dev/md5 started. minerva data-bck # minerva data-bck # man mdadm minerva data-bck # mdadm /dev/md5 --fail /dev/sda6 --fail /dev/sdc6 mdadm: set /dev/sda6 faulty in /dev/md5 mdadm: set /dev/sdc6 faulty in /dev/md5 minerva data-bck # cat /proc/mdstat Personalities : [linear] [raid0] [raid1] [raid10] [raid6] [raid5] [raid4] [multipath] [faulty] md5 : active raid10 sdd6[3] sdc6[2](F) sda6[1](F) sdb6[0] 1434617856 blocks super 1.1 512K chunks 2 near-copies [4/2] [U__U= ] this is exactly the same layout as i had before, just the data offset doesn't match. regards, Csaba -- To unsubscribe from this list: send the line "unsubscribe linux-raid" i= n the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html