From mboxrd@z Thu Jan 1 00:00:00 1970 From: Roy Sigurd Karlsbakk Subject: Re: Persistent failures with simple md setup Date: Wed, 30 Jan 2013 10:20:36 +0100 (CET) Message-ID: <14351602.2.1359537635927.JavaMail.root@zimbra> References: <1565063.1kpR7lz4Ph@xrated> Mime-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: QUOTED-PRINTABLE Return-path: In-Reply-To: <1565063.1kpR7lz4Ph@xrated> Sender: linux-raid-owner@vger.kernel.org To: Hans-Peter Jansen Cc: linux-raid@vger.kernel.org List-Id: linux-raid.ids > ~# cat /proc/mdstat > Personalities : [raid1] [raid0] [raid10] [raid6] [raid5] [raid4] > md3 : active raid1 sda4[0] > 869702736 blocks super 1.0 [2/1] [U_] > bitmap: 57/415 pages [228KB], 1024KB chunk >=20 > md0 : active raid1 sda1[0] > 96376 blocks super 1.0 [2/1] [U_] > bitmap: 1/6 pages [4KB], 8KB chunk >=20 > md1 : active (auto-read-only) raid1 sdb2[1] sda2[0] > 2096468 blocks super 1.0 [2/2] [UU] > bitmap: 0/8 pages [0KB], 128KB chunk >=20 > md124 : active raid1 sdb3[1] sda3[0] > 104856180 blocks super 1.0 [2/2] [UU] > bitmap: 8/200 pages [32KB], 256KB chunk =2E.. > for this case, but the behavior which partition is affected is random= , > only md124 seems stable (the root fs). The strange md naming was the > result of an upgrade installation. The device details are attached as > well. >=20 > It happens, that the active device even *switches* between boots, > which > is a perfect recipe for actually loosing data, hence this md doesn't > raise data security, it is the reason for loosing them. >=20 > Could some kind soul tell me, what's going on here? This looks somewhat familiar. I had a similar issue after install Ubunt= u 12.04 on my home server. IIRC udev/mdadm was out of sync, so that the= raid was started before all drives were ready. This was fixed around u= buntu 12.04.1. But then again, since it finds some of the partitions, a= nd not losing whole drives, this seems somewhat unlikely. Vennlige hilsener / Best regards roy -- Roy Sigurd Karlsbakk (+47) 98013356 roy@karlsbakk.net http://blogg.karlsbakk.net/ GPG Public key: http://karlsbakk.net/roysigurdkarlsbakk.pubkey.txt -- I all pedagogikk er det essensielt at pensum presenteres intelligibelt.= Det er et element=C3=A6rt imperativ for alle pedagoger =C3=A5 unng=C3=A5= eksessiv anvendelse av idiomer med xenotyp etymologi. I de fleste tilf= eller eksisterer adekvate og relevante synonymer p=C3=A5 norsk. -- 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