Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id ; Sun, 19 Nov 2000 07:11:31 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id ; Sun, 19 Nov 2000 07:11:21 -0500 Received: from [63.193.79.18] ([63.193.79.18]:18928 "HELO mwg.inxservices.lan") by vger.kernel.org with SMTP id ; Sun, 19 Nov 2000 07:11:05 -0500 Date: Sun, 19 Nov 2000 03:39:43 -0800 From: George Garvey To: linux-kernel@vger.kernel.org Subject: What is 2.4.0-test10: md1 has overlapping physical units with md2! Message-ID: <20001119033943.C935@inxservices.com> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline User-Agent: Mutt/1.2.5i Organization: inX Services, Los Angeles, CA, USA Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Is this something to be concerned about? It sounds like a disaster waiting to happen from the message. This is on 2 systems (with similar disk setups [same other than size]). dmesg from bootup: Nov 18 16:31:01 mwg kernel: md driver 0.90.0 MAX_MD_DEVS=256, MAX_REAL=12 Nov 18 16:31:01 mwg kernel: raid1 personality registered Nov 18 16:31:01 mwg kernel: md.c: sizeof(mdp_super_t) = 4096 Nov 18 16:31:01 mwg kernel: autodetecting RAID arrays Nov 18 16:31:01 mwg kernel: (read) ide/host0/bus0/target0/lun0/part1's sb offset: 524544 [events: 00000056] Nov 18 16:31:01 mwg kernel: (read) ide/host0/bus0/target0/lun0/part3's sb offset: 4194688 [events: 00000055] Nov 18 16:31:01 mwg kernel: (read) ide/host0/bus0/target0/lun0/part4's sb offset: 24771008 [events: 00000058] Nov 18 16:31:01 mwg kernel: (read) ide/host0/bus1/target0/lun0/part1's sb offset: 524544 [events: 00000056] Nov 18 16:31:01 mwg kernel: (read) ide/host0/bus1/target0/lun0/part3's sb offset: 4194688 [events: 00000055] Nov 18 16:31:01 mwg kernel: (read) ide/host0/bus1/target0/lun0/part4's sb offset: 24771008 [events: 00000058] Nov 18 16:31:01 mwg kernel: autorun ... Nov 18 16:31:01 mwg kernel: considering ide/host0/bus1/target0/lun0/part4 ... Nov 18 16:31:01 mwg kernel: adding ide/host0/bus1/target0/lun0/part4 ... Nov 18 16:31:01 mwg kernel: adding ide/host0/bus0/target0/lun0/part4 ... Nov 18 16:31:01 mwg kernel: created md2 Nov 18 16:31:01 mwg kernel: bind Nov 18 16:31:01 mwg kernel: bind Nov 18 16:31:01 mwg kernel: running: Nov 18 16:31:01 mwg kernel: now! Nov 18 16:31:01 mwg kernel: ide/host0/bus1/target0/lun0/part4's event counter: 00000058 Nov 18 16:31:01 mwg kernel: ide/host0/bus0/target0/lun0/part4's event counter: 00000058 Nov 18 16:31:01 mwg kernel: md: md2: raid array is not clean -- starting background reconstruction Nov 18 16:31:01 mwg kernel: md2: max total readahead window set to 124k Nov 18 16:31:01 mwg kernel: md2: 1 data-disks, max readahead per data-disk: 124k Nov 18 16:31:01 mwg kernel: raid1: device ide/host0/bus1/target0/lun0/part4 operational as mirror 1 Nov 18 16:31:01 mwg kernel: raid1: device ide/host0/bus0/target0/lun0/part4 operational as mirror 0 Nov 18 16:31:01 mwg kernel: raid1: raid set md2 not clean; reconstructing mirrors Nov 18 16:31:01 mwg kernel: raid1: raid set md2 active with 2 out of 2 mirrors Nov 18 16:31:01 mwg kernel: md: updating md2 RAID superblock on device Nov 18 16:31:01 mwg kernel: ide/host0/bus1/target0/lun0/part4 [events: 00000059](write) ide/host0/bus1/target0/lun0/part4's sb offset: 24771008 Nov 18 16:31:01 mwg kernel: md: syncing RAID array md2 Nov 18 16:31:01 mwg kernel: md: minimum _guaranteed_ reconstruction speed: 100 KB/sec/disc. Nov 18 16:31:01 mwg kernel: md: using maximum available idle IO bandwith (but not more than 100000 KB/sec) for reconstruction. Nov 18 16:31:01 mwg kernel: md: using 124k window, over a total of 24771008 blocks. Nov 18 16:31:01 mwg kernel: ide/host0/bus0/target0/lun0/part4 [events: 00000059](write) ide/host0/bus0/target0/lun0/part4's sb offset: 24771008 Nov 18 16:31:01 mwg kernel: . Nov 18 16:31:01 mwg kernel: considering ide/host0/bus1/target0/lun0/part3 ... Nov 18 16:31:02 mwg kernel: adding ide/host0/bus1/target0/lun0/part3 ... Nov 18 16:31:02 mwg kernel: adding ide/host0/bus0/target0/lun0/part3 ... Nov 18 16:31:02 mwg kernel: created md1 Nov 18 16:31:02 mwg kernel: bind Nov 18 16:31:02 mwg kernel: bind Nov 18 16:31:02 mwg kernel: running: Nov 18 16:31:02 mwg kernel: now! Nov 18 16:31:02 mwg kernel: ide/host0/bus1/target0/lun0/part3's event counter: 00000055 Nov 18 16:31:02 mwg kernel: ide/host0/bus0/target0/lun0/part3's event counter: 00000055 Nov 18 16:31:02 mwg kernel: md: md1: raid array is not clean -- starting background reconstruction Nov 18 16:31:02 mwg kernel: md1: max total readahead window set to 124k Nov 18 16:31:02 mwg kernel: md1: 1 data-disks, max readahead per data-disk: 124k Nov 18 16:31:02 mwg kernel: raid1: device ide/host0/bus1/target0/lun0/part3 operational as mirror 1 Nov 18 16:31:02 mwg kernel: raid1: device ide/host0/bus0/target0/lun0/part3 operational as mirror 0 Nov 18 16:31:02 mwg kernel: raid1: raid set md1 not clean; reconstructing mirrors Nov 18 16:31:02 mwg kernel: raid1: raid set md1 active with 2 out of 2 mirrors Nov 18 16:31:02 mwg kernel: md: updating md1 RAID superblock on device Nov 18 16:31:02 mwg kernel: ide/host0/bus1/target0/lun0/part3 [events: 00000056](write) ide/host0/bus1/target0/lun0/part3's sb offset: 4194688 Nov 18 16:31:02 mwg kernel: md: serializing resync, md1 has overlapping physical units with md2! Nov 18 16:31:02 mwg kernel: ide/host0/bus0/target0/lun0/part3 [events: 00000056](write) ide/host0/bus0/target0/lun0/part3's sb offset: 4194688 Nov 18 16:31:02 mwg kernel: . Nov 18 16:31:02 mwg kernel: considering ide/host0/bus1/target0/lun0/part1 ... Nov 18 16:31:02 mwg kernel: adding ide/host0/bus1/target0/lun0/part1 ... Nov 18 16:31:02 mwg kernel: adding ide/host0/bus0/target0/lun0/part1 ... Nov 18 16:31:02 mwg kernel: created md0 Nov 18 16:31:02 mwg kernel: bind Nov 18 16:31:02 mwg kernel: bind Nov 18 16:31:02 mwg kernel: running: Nov 18 16:31:02 mwg kernel: now! Nov 18 16:31:02 mwg kernel: ide/host0/bus1/target0/lun0/part1's event counter: 00000056 Nov 18 16:31:02 mwg kernel: ide/host0/bus0/target0/lun0/part1's event counter: 00000056 Nov 18 16:31:02 mwg kernel: md: md0: raid array is not clean -- starting background reconstruction Nov 18 16:31:02 mwg kernel: md0: max total readahead window set to 124k Nov 18 16:31:02 mwg kernel: md0: 1 data-disks, max readahead per data-disk: 124k Nov 18 16:31:02 mwg kernel: raid1: device ide/host0/bus1/target0/lun0/part1 operational as mirror 1 Nov 18 16:31:02 mwg kernel: raid1: device ide/host0/bus0/target0/lun0/part1 operational as mirror 0 Nov 18 16:31:02 mwg kernel: raid1: raid set md0 not clean; reconstructing mirrors Nov 18 16:31:02 mwg kernel: raid1: raid set md0 active with 2 out of 2 mirrors Nov 18 16:31:02 mwg kernel: md: updating md0 RAID superblock on device Nov 18 16:31:02 mwg kernel: ide/host0/bus1/target0/lun0/part1 [events: 00000057](write) ide/host0/bus1/target0/lun0/part1's sb offset: 524544 Nov 18 16:31:02 mwg kernel: md: serializing resync, md0 has overlapping physical units with md2! Nov 18 16:31:02 mwg kernel: ide/host0/bus0/target0/lun0/part1 [events: 00000057](write) ide/host0/bus0/target0/lun0/part1's sb offset: 524544 Nov 18 16:31:02 mwg kernel: . Nov 18 16:31:02 mwg kernel: ... autorun DONE. fdisk: /dev/hda: kernel version 132096 Command (m for help): Disk /dev/hda: 16 heads, 63 sectors, 59554 cylinders Units = cylinders of 1008 * 512 bytes Device Boot Start End Blocks Id System /dev/hda1 1 1041 524632+ fd Linux raid autodetect /dev/hda2 1042 2082 524664 82 Linux swap /dev/hda3 2083 10405 4194792 fd Linux raid autodetect /dev/hda4 10406 59554 24771096 fd Linux raid autodetect Command (m for help): /dev/hdc: kernel version 132096 Command (m for help): Disk /dev/hdc: 16 heads, 63 sectors, 59554 cylinders Units = cylinders of 1008 * 512 bytes Device Boot Start End Blocks Id System /dev/hdc1 1 1041 524632+ fd Linux raid autodetect /dev/hdc2 1042 2082 524664 82 Linux swap /dev/hdc3 2083 10405 4194792 fd Linux raid autodetect /dev/hdc4 10406 59554 24771096 fd Linux raid autodetect Command (m for help): /etc/raidtab: raiddev /dev/md/0 raid-level 1 nr-raid-disks 2 nr-spare-disks 0 chunk-size 32 persistent-superblock 1 device /dev/ide/host0/bus0/target0/lun0/part1 raid-disk 0 device /dev/ide/host0/bus1/target0/lun0/part1 raid-disk 1 raiddev /dev/md/1 raid-level 1 nr-raid-disks 2 nr-spare-disks 0 chunk-size 32 persistent-superblock 1 device /dev/ide/host0/bus0/target0/lun0/part3 raid-disk 0 device /dev/ide/host0/bus1/target0/lun0/part3 raid-disk 1 raiddev /dev/md/2 raid-level 1 nr-raid-disks 2 nr-spare-disks 0 chunk-size 32 persistent-superblock 1 device /dev/ide/host0/bus0/target0/lun0/part4 raid-disk 0 device /dev/ide/host0/bus1/target0/lun0/part4 raid-disk 1 /proc/mdstat: Personalities : [raid1] read_ahead 1024 sectors md0 : active raid1 ide/host0/bus1/target0/lun0/part1[1] ide/host0/bus0/target0/lun0/part1[0] 524544 blocks [2/2] [UU] md1 : active raid1 ide/host0/bus1/target0/lun0/part3[1] ide/host0/bus0/target0/lun0/part3[0] 4194688 blocks [2/2] [UU] md2 : active raid1 ide/host0/bus1/target0/lun0/part4[1] ide/host0/bus0/target0/lun0/part4[0] 24771008 blocks [2/2] [UU] unused devices: - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org Please read the FAQ at http://www.tux.org/lkml/