sorry I should have put it into the write-up umount -l / remount / umount was done. lsof did not show the culprit in the /var/www LV block device (apache was shut down also). <div><br><br><div class="gmail_quote">2010/1/11 guohuai li <span dir="ltr"><<a href="mailto:guohuai_li@hotmail.com">guohuai_li@hotmail.com</a>></span><br>
<blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex;">
<div>
maybe it is because the disk partion is not umounted.<br> <br>
<hr>
Date: Sun, 10 Jan 2010 00:17:40 +0100<br>From: <a href="mailto:idesent@gmail.com" target="_blank">idesent@gmail.com</a><br>To: <a href="mailto:drbd-user@lists.linbit.com" target="_blank">drbd-user@lists.linbit.com</a><br>
Subject: [DRBD-user] Installation progression - Device is held open by someone<div><div></div><div class="h5"><br><br>Hello,
<div><br></div>
<div>getting DRBD to work with MySQL was not problem. However prior to adding heartbeat I want to get a fix on the 2 problems below: <br>
<div><br></div>
<div>
<div>Debian Lenny/LVM</div>
<div>DRBD 8.0.14 </div>
<div><br></div>
<div><br></div></div>
<div>
<div>(1) State change error: Trying to set active node to passive and vice-versa </div>
<div><br></div>
<div># drbdadm secondary mainvol</div>
<div>/dev/drbd0: State change failed: (-12) Device is held open by someone</div>
<div>Command 'drbdsetup /dev/drbd0 secondary' terminated with exit code 11</div>
<div><br></div>
<div># drbdadm down all</div>
<div>/dev/drbd0: State change failed: (-12) Device is held open by someone</div>
<div>Command 'drbdsetup /dev/drbd0 down' terminated with exit code 11</div>
<div>drbdsetup exited with code 11</div>
<div><br></div>
<div>
<div>picked up from a forum:</div>
<div># vgchange -an</div>
<div> Can't deactivate volume group "vg0" with 7 open logical volume(s)</div>
<div><br></div>
<div>I could literally tear the connection by severing the link between the nodes and then set the active node, but there must be a smoother way. </div>
<div><br></div>
<div><br></div>
<div>(2) After reboot the DRBD volumes on the primary are offline/not-mounted/locked by DRBD. Setting them primary resolves it and allows a mount -a to mount them all. Is this the default behavior without heartbeat ??</div>
<div><br></div>
<div>thanks - ies</div>
<div><br></div></div>
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</blockquote></div><br></div>