<div dir="ltr"><span style="font-size:12.8px">I have VMWare ESXi/Workstation Centos 7.2(or Ubuntu 16.04) VMs to test out drbd9. I will try to duplicate your procedure to see if same issue comes up. Something to do for the upcoming weekend.</span><br></div><div class="gmail_extra"><br><div class="gmail_quote">On Tue, Jul 19, 2016 at 2:37 PM, Jason Dillon <span dir="ltr"><<a href="mailto:jason@planet57.com" target="_blank">jason@planet57.com</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div style="word-wrap:break-word"><div 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 style="font-family:Helvetica,Arial;font-size:13px;color:rgba(0,0,0,1.0);margin:0px;line-height:auto"><br></div><div 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 style="margin:0px"><br></div><div style="margin:0px"> * * *</div><div style="margin:0px"><br></div><div 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 style="margin:0px"><br></div><div 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" target="_blank">elrepo.org</a>). Though obviously this is 8.4 not 9.0 and lots has changed.</div><span class="HOEnZb"><font color="#888888"><div style="margin:0px"><br></div> —jason</font></span><div><div class="h5"><br> <div></div> <br><p>On July 19, 2016 at 2:35:30 AM, Roland Kammerer (<a href="mailto:roland.kammerer@linbit.com" target="_blank">roland.kammerer@linbit.com</a>) wrote:</p> <blockquote type="cite"><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><a href="mailto:drbd-user@lists.linbit.com" target="_blank">drbd-user@lists.linbit.com</a><br><a href="http://lists.linbit.com/mailman/listinfo/drbd-user" target="_blank">http://lists.linbit.com/mailman/listinfo/drbd-user</a><br></div></div></span></blockquote></div></div></div><br>_______________________________________________<br>
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<br></blockquote></div><br><br clear="all"><div><br></div>-- <br><div class="gmail_signature" data-smartmail="gmail_signature">T.J. Yang</div>
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