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<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Arial","sans-serif";color:#1F497D">Congratz…<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Arial","sans-serif";color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:10.0pt;font-family:"Arial","sans-serif";color:#1F497D">If you see such an output then you accomplished to break the filesystem.<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:10.0pt;font-family:"Arial","sans-serif";color:#1F497D">Don´t mess around with the DRBD-System by doing such things you described.<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:10.0pt;font-family:"Arial","sans-serif";color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:10.0pt;font-family:"Arial","sans-serif";color:#1F497D">If want to check proper DRBD-Sync, just promote/demote the desired partition with drbdtools and mount it. Don´t do anything under the layer of DRBD.
You saw what happens otherwise.<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:10.0pt;font-family:"Arial","sans-serif";color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:10.0pt;font-family:"Arial","sans-serif";color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Arial","sans-serif";color:#1F497D">--
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<br>
Mit freundlichen Grüßen / Kind Regards</span><span style="font-family:"Times New Roman , serif","serif";color:#1F497D">
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</span><b><span style="font-size:10.0pt;font-family:"Arial","sans-serif";color:#1F497D">Matthias Kesch</span></b><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D"><o:p></o:p></span></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal"><b><span style="font-size:10.0pt;font-family:"Tahoma","sans-serif"">Von:</span></b><span style="font-size:10.0pt;font-family:"Tahoma","sans-serif""> drbd-user-bounces@lists.linbit.com [mailto:drbd-user-bounces@lists.linbit.com]
<b>Im Auftrag von </b>Romain Pelissier<br>
<b>Gesendet:</b> Dienstag, 4. Oktober 2016 19:36<br>
<b>An:</b> drbd-user@lists.linbit.com<br>
<b>Betreff:</b> Re: [DRBD-user] Strange behaviour of DRBD<o:p></o:p></span></p>
<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal"><span style="font-family:"Verdana","sans-serif"">Hi,<o:p></o:p></span></p>
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<p class="MsoNormal" style="margin-bottom:12.0pt"><span style="font-family:"Verdana","sans-serif"">I have also noticed that after a while, the folder I have delete previously on the secondo node appear again but.. in a strange form:<br>
<br>
<br>
??????????? ? ? ? ? ? web<br>
drwxr-xr-x. 8 501 501 97 Sep 15 17:09 services/<br>
<br>
<o:p></o:p></span></p>
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<p class="MsoNormal" style="margin-bottom:12.0pt"><span style="font-family:"Verdana","sans-serif"">Has you can see, the folder seems to exist but I can't access it at all.<o:p></o:p></span></p>
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<p class="MsoNormal" style="margin-bottom:12.0pt"><span style="font-family:"Verdana","sans-serif"">Is it a normal behaviour?<br>
<br>
<o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-family:"Verdana","sans-serif"">Thanks<o:p></o:p></span></p>
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<p class="MsoNormal" style="margin-bottom:12.0pt"><span style="font-family:"Verdana","sans-serif""><o:p> </o:p></span></p>
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<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal">2016-10-04 10:58 GMT-04:00 Romain Pelissier <<a href="mailto:romain.pelissier@gmail.com" target="_blank">romain.pelissier@gmail.com</a>>:<o:p></o:p></p>
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<p class="MsoNormal"><span style="font-family:"Verdana","sans-serif"">Hi,<o:p></o:p></span></p>
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<p class="MsoNormal" style="margin-bottom:12.0pt"><span style="font-family:"Verdana","sans-serif"">So first, sorry if you foud this question basic but I am very new to drbd. Second, maybe it's perfectly normal but in this case, I will need some advices from
you gyus :)<o:p></o:p></span></p>
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<p class="MsoNormal" style="margin-bottom:12.0pt"><span style="font-family:"Verdana","sans-serif"">Here is my situation:<o:p></o:p></span></p>
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<p class="MsoNormal" style="margin-bottom:12.0pt"><span style="font-family:"Verdana","sans-serif"">I use 8.4.7-1 on RHEL 6.5 (2.6.32-642.4.2.el6.x86_64) on my 2 nodes. I use drbd with this scenario:<o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-family:"Verdana","sans-serif"">I have an lvm partition formatted as xfs.<o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-family:"Verdana","sans-serif""> This partition contain ma application database (several Gigs).<o:p></o:p></span></p>
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<p class="MsoNormal" style="margin-bottom:12.0pt"><span style="font-family:"Verdana","sans-serif"">I want to use drbd to have a copy of the partition on the remote node.<o:p></o:p></span></p>
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<p class="MsoNormal" style="margin-bottom:12.0pt"><span style="font-family:"Verdana","sans-serif"">Here is my conf:<br>
<br>
cat /etc/drbd.d/backup.res<br>
global { usage-count no; }<br>
common { syncer { rate 1000M; } }<br>
resource rc0 {<br>
protocol C;<br>
startup {<br>
wfc-timeout 15;<br>
degr-wfc-timeout 60;<br>
}<br>
net {<br>
cram-hmac-alg sha1;<br>
shared-secret "secret2secret";<br>
}<br>
on esm65 {<br>
device /dev/drbd0;<br>
disk /dev/vg0/lv_arc;<br>
address <a href="http://172.31.254.27:7788" target="_blank">172.31.254.27:7788</a>;<br>
#meta-disk internal;<br>
#flexible-meta-disk /dev/vg0/lv_drdb_md;<br>
meta-disk /dev/vg0/lv_drdb_md;<br>
}<br>
on phpesmbck01 {<br>
device /dev/drbd0;<br>
disk /dev/vg0/lv_arc;<br>
address <a href="http://172.31.254.19:7788" target="_blank">172.31.254.19:7788</a>;<br>
#meta-disk internal;<br>
#flexible-meta-disk /dev/vg0/lv_drdb_md;<br>
meta-disk /dev/vg0/lv_drdb_md;<br>
}<br>
}<o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-family:"Verdana","sans-serif"">The first sync works fine. To test it once completed, I stop drbd on thr second node, mount /dec/vg0/lv_arc on a folder and I can see the folders.<o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-family:"Verdana","sans-serif"">Perferct!<o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-family:"Verdana","sans-serif"">But..<o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-family:"Verdana","sans-serif"">For the fun of it, I have renoved a folder on the secondary node drbd partition (drbd was stop at that time). then umount it and start drbd process.<o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-family:"Verdana","sans-serif""><o:p> </o:p></span></p>
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<p class="MsoNormal" style="margin-bottom:12.0pt"><span style="font-family:"Verdana","sans-serif"">I check this<br>
<br>
cat /proc/drbd<br>
version: 8.4.7-1 (api:1/proto:86-101)<br>
GIT-hash: 3a6a769340ef93b1ba2792c6461250790795db49 build by mockbuild@Build64R6, 2016-01-12 13:27:11<br>
0: cs:Connected ro:Primary/Secondary ds:UpToDate/UpToDate C r-----<br>
ns:72054328 nr:0 dw:19012784 dr:59035232 al:1170 bm:0 lo:0 pe:0 ua:0 ap:0 ep:1 wo:f oos:0<o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-family:"Verdana","sans-serif"">So, everything seems to be up to date.<o:p></o:p></span></p>
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<p class="MsoNormal" style="margin-bottom:12.0pt"><span style="font-family:"Verdana","sans-serif"">But If I stop the seocndary node, mount the lvm in a folder, the folder that I have deleted earlier is not there but it exists on the primary node.<o:p></o:p></span></p>
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<p class="MsoNormal" style="margin-bottom:12.0pt"><span style="font-family:"Verdana","sans-serif"">Is it normal in this case that the status is UpToDate/UpToDate? How can I be sure that the 2 partition are really in sync?<o:p></o:p></span></p>
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<p class="MsoNormal" style="margin-bottom:12.0pt"><span style="font-family:"Verdana","sans-serif"">Thanks for your explanation!<o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-family:"Verdana","sans-serif";color:#888888">Romain<o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-family:"Verdana","sans-serif";color:#888888"><o:p> </o:p></span></p>
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<p class="MsoNormal"><o:p> </o:p></p>
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