I'm trying to convert one of my logical volumes to be RAID1 mirrored using LVM on my Ubuntu 15.10 system. When I do, the command lvs shows the mirror set is 100% synchronized immediately. syslog show a failure saying one of the devices in the mirror set has failed and it reverts to a single device mirror set. Errors include saying attempt to access beyond end of device. There is also an error showing code=-5 for 'super_written'. A full extract of syslog is below. The volume group is configured so: root@the-circus:~# pvs PV VG Fmt Attr PSize PFree /dev/sda3 vg0 lvm2 a-- 2.73t 1.09t /dev/sdb3 vg0 lvm2 a-- 2.73t 2.68t So it's trying to create the mirror devices on /dev/sdb3. The disks are 3TB Seagate Barracuda disks. They both brand new. Experimentation shows I only get these errors for logical volumes bigger than 31GB, anything smaller behaves correctly. My version of Ubuntu: # lsb_release -a No LSB modules are available. Distributor ID: Ubuntu Description: Ubuntu 15.10 Release: 15.10 Codename: wily Kernel is: # uname -a Linux the-circus 4.2.0-18-generic #22-Ubuntu SMP Fri Nov 6 18:25:50 UTC 2015 x86_64 x86_64 x86_64 GNU/Linux Anyone any ideas? I've googled this until the cows come home but cannot find anything helpful. Regards, Tony. Nov 21 17:29:52 the-circus kernel: [ 231.538111] device-mapper: raid: Loading target version 1.7.0 Nov 21 17:29:52 the-circus kernel: [ 231.541976] device-mapper: raid: Superblocks created for new array Nov 21 17:29:52 the-circus kernel: [ 231.542894] md/raid1:mdX: not clean -- starting background reconstruction Nov 21 17:29:52 the-circus kernel: [ 231.542897] md/raid1:mdX: active with 2 out of 2 mirrors Nov 21 17:29:52 the-circus kernel: [ 231.542899] Choosing daemon_sleep default (5 sec) Nov 21 17:29:52 the-circus kernel: [ 231.542903] created bitmap (50 pages) for device mdX Nov 21 17:29:52 the-circus kernel: [ 231.542906] attempt to access beyond end of device Nov 21 17:29:52 the-circus kernel: [ 231.542908] dm-7: rw=13329, want=18446744073709551608, limit=8192 Nov 21 17:29:52 the-circus kernel: [ 231.542909] md: super_written gets error=-5, uptodate=0 Nov 21 17:29:52 the-circus kernel: [ 231.542920] md/raid1:mdX: Disk failure on dm-8, disabling device. Nov 21 17:29:52 the-circus kernel: [ 231.542920] md/raid1:mdX: Operation continuing on 1 devices. Nov 21 17:29:52 the-circus kernel: [ 231.542933] attempt to access beyond end of device Nov 21 17:29:52 the-circus kernel: [ 231.542936] dm-5: rw=13329, want=18446744073709551608, limit=8192 Nov 21 17:29:52 the-circus kernel: [ 231.542939] md: super_written gets error=-5, uptodate=0 Nov 21 17:29:52 the-circus kernel: [ 231.569851] attempt to access beyond end of device Nov 21 17:29:52 the-circus kernel: [ 231.569859] dm-5: rw=13329, want=18446744073709551608, limit=8192 Nov 21 17:29:52 the-circus kernel: [ 231.569863] md: super_written gets error=-5, uptodate=0 Nov 21 17:29:52 the-circus kernel: [ 231.596802] mdX: bitmap file is out of date, doing full recovery Nov 21 17:29:52 the-circus kernel: [ 231.712193] mdX: bitmap initialized from disk: read 4 pages, set 102400 of 102400 bits Nov 21 17:29:52 the-circus systemd[1]: Started Device-mapper event daemon. Nov 21 17:29:52 the-circus dmeventd[3132]: dmeventd ready for processing. Nov 21 17:29:52 the-circus kernel: [ 231.786858] RAID1 conf printout: Nov 21 17:29:52 the-circus kernel: [ 231.786863] --- wd:1 rd:2 Nov 21 17:29:52 the-circus kernel: [ 231.786866] disk 0, wo:0, o:1, dev:dm-6 Nov 21 17:29:52 the-circus kernel: [ 231.786868] disk 1, wo:1, o:0, dev:dm-8 Nov 21 17:29:52 the-circus kernel: [ 231.793942] RAID1 conf printout: Nov 21 17:29:52 the-circus kernel: [ 231.793947] --- wd:1 rd:2 Nov 21 17:29:52 the-circus kernel: [ 231.793949] disk 0, wo:0, o:1, dev:dm-6 Nov 21 17:29:52 the-circus kernel: [ 231.794033] md: resync of RAID array mdX Nov 21 17:29:52 the-circus kernel: [ 231.794037] md: minimum _guaranteed_ speed: 1000 KB/sec/disk. Nov 21 17:29:52 the-circus kernel: [ 231.794039] md: using maximum available idle IO bandwidth (but not more than 200000 KB/sec) for resync. Nov 21 17:29:52 the-circus kernel: [ 231.794042] md: using 128k window, over a total of 52428800k. Nov 21 17:29:52 the-circus kernel: [ 231.794196] md: mdX: resync done. Nov 21 17:29:53 the-circus kernel: [ 232.037242] RAID1 conf printout: Nov 21 17:29:53 the-circus kernel: [ 232.037248] --- wd:1 rd:2 Nov 21 17:29:53 the-circus kernel: [ 232.037251] disk 0, wo:0, o:1, dev:dm-6 Nov 21 17:29:53 the-circus lvm[3132]: Monitoring RAID device vg0-testlv for events. Nov 21 17:29:53 the-circus lvm[3132]: Device #1 of raid1 array, vg0-testlv, has failed. Nov 21 17:29:53 the-circus lvm[3132]: Use 'lvconvert --repair vg0/testlv' to replace failed device. -- Tony Arnold, IT Security Analyst, University of Manchester. T: +44 (0) 161 275 6093, F: +44 (0) 705 344 3082, M: +44 (0) 773 330 0039, E: tony.arnold@manchester.ac.uk -- ubuntu-users mailing list ubuntu-users@lists.ubuntu.com Modify settings or unsubscribe at: https://lists.ubuntu.com/mailman/listinfo/ubuntu-users _______________________________________________ linux-lvm mailing list linux-lvm@redhat.com https://www.redhat.com/mailman/listinfo/linux-lvm read the LVM HOW-TO at http://tldp.org/HOWTO/LVM-HOWTO/
