<html><head></head><body style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space; "><div>I think we've found the cause here. Below is the mdadm output. Should we use /dev/md2 instead of sda2 in the drbd conf?</div><div><i><br></i></div><div><div><i>[root@mbus5 ~]# mdadm --misc -D /dev/md2</i></div><div><i>/dev/md2:</i></div><div><i> Version : 0.90</i></div><div><i> Creation Time : Tue Nov 29 18:25:35 2011</i></div><div><i> Raid Level : raid10</i></div><div><i> Array Size : 1893918720 (1806.18 GiB 1939.37 GB)</i></div><div><i> Used Dev Size : 946959360 (903.09 GiB 969.69 GB)</i></div><div><i> Raid Devices : 4</i></div><div><i> Total Devices : 4</i></div><div><i>Preferred Minor : 2</i></div><div><i> Persistence : Superblock is persistent</i></div><div><i><br></i></div><div><i> Update Time : Fri Jul 6 22:09:18 2012</i></div><div><i> State : clean</i></div><div><i> Active Devices : 4</i></div><div><i>Working Devices : 4</i></div><div><i> Failed Devices : 0</i></div><div><i> Spare Devices : 0</i></div><div><i><br></i></div><div><i> Layout : near=2</i></div><div><i> Chunk Size : 256K</i></div><div><i><br></i></div><div><i> UUID : c4bc887b:ba1a9809:d90d1802:034ea8a8</i></div><div><i> Events : 0.8</i></div><div><i><br></i></div><div><i> Number Major Minor RaidDevice State</i></div><div><i> 0 8 2 0 active sync /dev/sda2</i></div><div><i> 1 8 18 1 active sync /dev/sdb2</i></div><div><i> 2 8 34 2 active sync /dev/sdc2</i></div><div><i> 3 8 50 3 active sync /dev/sdd2</i></div></div><div><br></div><br><div><div>On Jul 11, 2012, at 10:34 AM, Digimer wrote:</div><br class="Apple-interchange-newline"><blockquote type="cite"><div>It's used by RAID, by the looks of it. What does mdadm say? If it is a<br>RAID member, then you need to specify the /dev/mdX device.<br><br>Digimer<br><br>On 07/11/2012 01:30 PM, Lin Zhao wrote:<br><blockquote type="cite">Thanks for the replies. lsof mentions nothing of sda2. Below is fdsk.<br></blockquote><blockquote type="cite">Any other means to check what might be blocking it?<br></blockquote><blockquote type="cite"><br></blockquote><blockquote type="cite">/[root@mbus5 ~]# fdisk -l /dev/sda/<br></blockquote><blockquote type="cite">/<br></blockquote><blockquote type="cite">/<br></blockquote><blockquote type="cite">/Disk /dev/sda: 1000.2 GB, 1000204886016 bytes/<br></blockquote><blockquote type="cite">/255 heads, 63 sectors/track, 121601 cylinders/<br></blockquote><blockquote type="cite">/Units = cylinders of 16065 * 512 = 8225280 bytes/<br></blockquote><blockquote type="cite">/<br></blockquote><blockquote type="cite">/<br></blockquote><blockquote type="cite">/ Device Boot Start End Blocks Id System/<br></blockquote><blockquote type="cite">//dev/sda1 * 1 13 104391 fd Linux raid<br></blockquote><blockquote type="cite">autodetect/<br></blockquote><blockquote type="cite">//dev/sda2 14 117904 946959457+ fd Linux raid<br></blockquote><blockquote type="cite">autodetect/<br></blockquote><blockquote type="cite">//dev/sda3 117905 121091 25599577+ fd Linux raid<br></blockquote><blockquote type="cite">autodetect/<br></blockquote><blockquote type="cite">//dev/sda4 121092 121601 4096575 fd Linux raid<br></blockquote><blockquote type="cite">autodetect/<br></blockquote><blockquote type="cite">/[root@mbus5 ~]# /<br></blockquote><blockquote type="cite"><br></blockquote><blockquote type="cite">On Jul 11, 2012, at 1:00 AM, Pascal BERTON wrote:<br></blockquote><blockquote type="cite"><br></blockquote><blockquote type="cite"><blockquote type="cite">/dev/sda2 ? Wouldn't it sound like a swap partition or something alike ?<br></blockquote></blockquote><blockquote type="cite"><blockquote type="cite">Or wouldn't it be already in use by one of the MDs ?<br></blockquote></blockquote><blockquote type="cite"><blockquote type="cite">What does "fdisk -l /dev/sda" return ?<br></blockquote></blockquote><blockquote type="cite"><blockquote type="cite"><br></blockquote></blockquote><blockquote type="cite"><blockquote type="cite">-----Message d'origine-----<br></blockquote></blockquote><blockquote type="cite"><blockquote type="cite">De : <a href="mailto:drbd-user-bounces@lists.linbit.com">drbd-user-bounces@lists.linbit.com</a><br></blockquote></blockquote><blockquote type="cite"><blockquote type="cite"><<a href="mailto:drbd-user-bounces@lists.linbit.com">mailto:drbd-user-bounces@lists.linbit.com</a>><br></blockquote></blockquote><blockquote type="cite"><blockquote type="cite">[mailto:drbd-user-bounces@lists.linbit.com] De la part de Digimer<br></blockquote></blockquote><blockquote type="cite"><blockquote type="cite">Envoyé : mercredi 11 juillet 2012 07:13<br></blockquote></blockquote><blockquote type="cite"><blockquote type="cite">À : Lin Zhao<br></blockquote></blockquote><blockquote type="cite"><blockquote type="cite">Cc : <a href="mailto:drbd-user@lists.linbit.com">drbd-user@lists.linbit.com</a> <<a href="mailto:drbd-user@lists.linbit.com">mailto:drbd-user@lists.linbit.com</a>><br></blockquote></blockquote><blockquote type="cite"><blockquote type="cite">Objet : Re: [DRBD-user] Lower device already claimed error<br></blockquote></blockquote><blockquote type="cite"><blockquote type="cite"><br></blockquote></blockquote><blockquote type="cite"><blockquote type="cite">On 07/10/2012 06:54 PM, Lin Zhao wrote:<br></blockquote></blockquote><blockquote type="cite"><blockquote type="cite"><blockquote type="cite">Hi I'm setting up drbd on a Linux 2.6.18-238.el5. When I'm doing<br></blockquote></blockquote></blockquote><blockquote type="cite"><blockquote type="cite"><blockquote type="cite">drbdadmin attach, i get error:<br></blockquote></blockquote></blockquote><blockquote type="cite"><blockquote type="cite"><blockquote type="cite"><br></blockquote></blockquote></blockquote><blockquote type="cite"><blockquote type="cite"><blockquote type="cite">//dev/drbd1: Failure: (114) Lower device is already claimed. This<br></blockquote></blockquote></blockquote><blockquote type="cite"><blockquote type="cite"><blockquote type="cite">usually means it is mounted./ /Command 'drbdsetup /dev/drbd1 disk<br></blockquote></blockquote></blockquote><blockquote type="cite"><blockquote type="cite"><blockquote type="cite">/dev/sda2 /dev/sda2 internal --set-defaults --create-device'<br></blockquote></blockquote></blockquote><blockquote type="cite"><blockquote type="cite"><blockquote type="cite">terminated with exit code 10/ / /<br></blockquote></blockquote></blockquote><blockquote type="cite"><blockquote type="cite"><blockquote type="cite"><br></blockquote></blockquote></blockquote><blockquote type="cite"><blockquote type="cite"><blockquote type="cite">sda2 should by no means be mounted:<br></blockquote></blockquote></blockquote><blockquote type="cite"><blockquote type="cite"><blockquote type="cite">/[root@mbus5 ~]# mount -l/<br></blockquote></blockquote></blockquote><blockquote type="cite"><blockquote type="cite"><blockquote type="cite">//dev/md1 on / type ext3 (rw,noatime)/ /proc on /proc type proc (rw)/<br></blockquote></blockquote></blockquote><blockquote type="cite"><blockquote type="cite"><blockquote type="cite">/sysfs on /sys type sysfs (rw)/ /devpts on /dev/pts type devpts<br></blockquote></blockquote></blockquote><blockquote type="cite"><blockquote type="cite"><blockquote type="cite">(rw,gid=5,mode=620)/<br></blockquote></blockquote></blockquote><blockquote type="cite"><blockquote type="cite"><blockquote type="cite">//dev/md0 on /boot type ext3 (rw)/<br></blockquote></blockquote></blockquote><blockquote type="cite"><blockquote type="cite"><blockquote type="cite">/tmpfs on /dev/shm type tmpfs (rw)/<br></blockquote></blockquote></blockquote><blockquote type="cite"><blockquote type="cite"><blockquote type="cite">/none on /proc/sys/fs/binfmt_misc type binfmt_misc (rw)/<br></blockquote></blockquote></blockquote><blockquote type="cite"><blockquote type="cite"><br></blockquote></blockquote><blockquote type="cite"><blockquote type="cite">Could it be claimed by LVM or similar? *Something* has it... Any clues in<br></blockquote></blockquote><blockquote type="cite"><blockquote type="cite">'lsof'?<br></blockquote></blockquote><blockquote type="cite"><blockquote type="cite"><br></blockquote></blockquote><blockquote type="cite"><blockquote type="cite">--<br></blockquote></blockquote><blockquote type="cite"><blockquote type="cite">Digimer<br></blockquote></blockquote><blockquote type="cite"><blockquote type="cite">Papers and Projects: <a href="https://alteeve.com">https://alteeve.com</a><br></blockquote></blockquote><blockquote type="cite"><blockquote type="cite"><br></blockquote></blockquote><blockquote type="cite"><blockquote type="cite"><br></blockquote></blockquote><blockquote type="cite"><blockquote type="cite">_______________________________________________<br></blockquote></blockquote><blockquote type="cite"><blockquote type="cite">drbd-user mailing list<br></blockquote></blockquote><blockquote type="cite"><blockquote type="cite"><a href="mailto:drbd-user@lists.linbit.com">drbd-user@lists.linbit.com</a> <<a href="mailto:drbd-user@lists.linbit.com">mailto:drbd-user@lists.linbit.com</a>><br></blockquote></blockquote><blockquote type="cite"><blockquote type="cite"><a href="http://lists.linbit.com/mailman/listinfo/drbd-user">http://lists.linbit.com/mailman/listinfo/drbd-user</a><br></blockquote></blockquote><blockquote type="cite"><blockquote type="cite"><br></blockquote></blockquote><blockquote type="cite"><blockquote type="cite">_______________________________________________<br></blockquote></blockquote><blockquote type="cite"><blockquote type="cite">drbd-user mailing list<br></blockquote></blockquote><blockquote type="cite"><blockquote type="cite"><a href="mailto:drbd-user@lists.linbit.com">drbd-user@lists.linbit.com</a><br></blockquote></blockquote><blockquote type="cite"><blockquote type="cite"><a href="http://lists.linbit.com/mailman/listinfo/drbd-user">http://lists.linbit.com/mailman/listinfo/drbd-user</a><br></blockquote></blockquote><blockquote type="cite"><br></blockquote><blockquote type="cite"><br></blockquote><blockquote type="cite"><br></blockquote><blockquote type="cite">_______________________________________________<br></blockquote><blockquote type="cite">drbd-user mailing list<br></blockquote><blockquote type="cite"><a href="mailto:drbd-user@lists.linbit.com">drbd-user@lists.linbit.com</a><br></blockquote><blockquote type="cite"><a href="http://lists.linbit.com/mailman/listinfo/drbd-user">http://lists.linbit.com/mailman/listinfo/drbd-user</a><br></blockquote><blockquote type="cite"><br></blockquote><br><br>-- <br>Digimer<br>Papers and Projects: <a href="https://alteeve.com">https://alteeve.com</a><br><br><br></div></blockquote></div><br></body></html>