From mboxrd@z Thu Jan 1 00:00:00 1970 From: Thomas MARCHESSEAU Subject: RAID 5 "magicaly" become a RAID0 Date: Sun, 12 Apr 2015 23:42:35 +0200 Message-ID: Mime-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: QUOTED-PRINTABLE Return-path: Sender: linux-raid-owner@vger.kernel.org To: linux-raid@vger.kernel.org List-Id: linux-raid.ids Hi team , Like probably lot of new subscriber , i mail you, guys, for help . I=B9m running a raid5 on 7 HDD for several month now ( and years on oth= er system) without problem . last week i had a crash disk (sdg) , i=B9ve add a new drive (sdi) and rebuild .. Works fine , and i dont think this is the cause of my today problem. Yesterday , i=B9v upgraded my ubuntu 14.10 , and the system warm me wit= h a message that i can=B9t recall and rewrite exactly , but something like = : md127 doesn=B9t not match with /etc/mdadm/mdadm.conf , blah blah , run /usr/share/mdadm/mkconf , and fix /etc/mdadm/mdadm.conf i=B9ve done it , and reboot , all looks good . All the drive have been rename after reboot ( orginal sdg was extract f= orm the bay ) =20 I=B9ve setup a rsync of my most important data on a external drive this night, who partially failed (only 25% ha been backuped , bad luck ) , (probably) because this morning i have re-inserted by mistake the fau= lty drive ( for information , i think the drive was in fact ok , the sata connector was a bit disconnect ) I did not pay attention of the situation at the moment , but few hour later , i ssh my filer and my =AB home =BB (on the raid partition) was= not available anymore . I didn=B9t try to fschk or any thing else than : Mdadm =8Bstop /dev/md127 mdadm --assemble /dev/md127 /dev/sdb /dev/sdc /dev/sdd /dev/sde /dev/sd= f /dev/sdg /dev/sdh=20 mdadm: /dev/md127 assembled from 5 drives - not enough to start the arr= ay. So i=B9ve read a bunch of usefull link , one of them :) , https://raid.wiki.kernel.org/index.php/RAID_Recovery , says , don=B9t = do stupid thing until drop a mail on linux-raid mailling =8A so i=B9m here= . i=B9ve collected this usefull info : mdadm --examine /dev/sd[a-z] | egrep 'Event|/dev/sd' /dev/sda: (system HDD ) /dev/sdb: Events : 21958 /dev/sdc: Events : 21958 /dev/sdd: Events : 21958 /dev/sde: Events : 21958 /dev/sdf: Events : 21958 /dev/sdg: Events : 21954 <=8B here /dev/sdh: Events : 21954 <=8B and here i=B9ve also a full copy of mdadm =8Bexamine The strange thing is that my raid array is now seen as a RAID0 in mdadm --detail /dev/md127 /dev/md127: Version :=20 Raid Level : raid0 Total Devices : 0 State : inactive But individually all drive in mdadm =8Bexamine , are RAID 5 member . Anyone for help ? i=B9 was on the way to perform a mdadm --create --assume-clean =8Blevel=3D5 --raid-devices=3D7 --size=3D= 11720300544 /dev/md127 /dev/sdb /dev/sdc /dev/sdd /dev/sde /dev/sdf /dev/sdg /dev/s= dh Which looks a bit stupid before ask for help Regards thomas=20 -- 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