<html><head><style>body{font-family:Helvetica,Arial;font-size:13px}</style></head><body style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space;"><div id="bloop_customfont" style="font-family:Helvetica,Arial;font-size:13px; color: rgba(0,0,0,1.0); margin: 0px; line-height: auto;">I will give it a shot and let you know.</div><div id="bloop_customfont" style="font-family:Helvetica,Arial;font-size:13px; color: rgba(0,0,0,1.0); margin: 0px; line-height: auto;"><br></div><div id="bloop_customfont" style="margin: 0px;"><span style="color: rgb(0, 0, 0); font-family: Helvetica, Arial; font-size: 13px;">BTW I have not tested with a local </span>xenial VM, only remote google-cloud, so thats likely why you can’t reproduce the problem if you haven’t actually tried on google-cloud. I may see if I can find some time to setup with local (parallels) vms.</div><div id="bloop_customfont" style="margin: 0px;"><br></div><div id="bloop_customfont" style="margin: 0px;"> * * *</div><div id="bloop_customfont" style="margin: 0px;"><br></div><div id="bloop_customfont" style="margin: 0px;">I also wanted to isolate from ubuntu, but since there are no centos7 rpms for this I basically couldn’t _easily_ spin up that environment to see if maybe it was just something in the xenial google-cloud dist that was messing it up.</div><div id="bloop_customfont" style="margin: 0px;"><br></div><div id="bloop_customfont" style="margin: 0px;">FTR the only configuration I’ve been able to get working properly on google-cloud is on centos7 using drbd 8.4 (from <a href="http://elrepo.org">elrepo.org</a>). Though obviously this is 8.4 not 9.0 and lots has changed.</div><div id="bloop_customfont" style="margin: 0px;"><br></div> —jason<br> <div class="bloop_sign" id="bloop_sign_1468956682749569792"></div> <br><p class="airmail_on">On July 19, 2016 at 2:35:30 AM, Roland Kammerer (<a href="mailto:roland.kammerer@linbit.com">roland.kammerer@linbit.com</a>) wrote:</p> <blockquote type="cite" class="clean_bq"><span><div><div></div><div>On Sun, Jul 17, 2016 at 11:01:50PM +0200, Roland Kammerer wrote:<br>> On Sat, Jul 16, 2016 at 11:34:41AM -0700, Jason Dillon wrote:<br>> > <br>> > FTR I’m using just the standard gcloud ubuntu 16.04 image:<br>> > <br>> > FTR I tried this a bunch of times and it worked as expected once or<br>> > twice, then freaked out. :-(<br>> <br>> Hi Jason,<br>> <br>> so far I have not been able to reproduce it in my xenial VMs, but we<br>> will investigate that ASAP. For now, thanks for reporting!<br><br>Hi Jason,<br><br>still no luck with reproducing (and from the trace it looks like the bug<br>is below DRBD).<br><br>Could you help us to reproduce it? Make sure that there are no<br>drbdmanage resource and then start with a 200MB volume:<br>"drbdmanage nv testres 200M -d2"<br><br>Make sure there are no other resources, so the testres/volume should get<br>/dev/drbd100.<br><br>Then run that (sloppy) bash script[1], start with:<br>./test.sh 10 all<br><br>You can trigger a mount/umount test only with:<br>./test.sh 10 notall<br><br>I executed 50 test runs with "all" and 100 "mount/umount" without any<br>issues. The only difference is see for now is that I execute it in my<br>local xenial VMs and that my volume size might be much smaller.<br><br>If that works, please remove the resource and create a new one with the<br>size you started with originally (and adapt the "dd count").<br><br>Thanks, rck<br>[1]<br>----------8<----------8<----------<br>#!/bin/bash<br><br>for i in $(seq $1); do<br> echo "Test: $i"<br> if [ "$2" = "all" ]; then<br> mkfs.ext4 -F -E discard /dev/drbd100<br> fi <br> mount /dev/drbd100 /mnt<br> if [ "$2" = "all" ]; then<br> dd if=/dev/urandom of=/mnt/test.bin bs=1M count=150<br> fi<br> umount /mnt<br> dmesg | egrep BUG<br> if [ "$?" = "0" ]; then<br> echo "triggered bug"<br> break<br> fi<br>done<br>----------8<----------8<----------<br>_______________________________________________<br>drbd-user mailing list<br>drbd-user@lists.linbit.com<br>http://lists.linbit.com/mailman/listinfo/drbd-user<br></div></div></span></blockquote></body></html>