<br><font size=2 face="sans-serif">Hi All,</font>
<br>
<br><font size=2 face="sans-serif">Firstly can I thank Philipp, Lars and everyone else who has contributed to DRBD, </font>
<br><font size=2 face="sans-serif">we have been running a production cluster for over a year now supporting :-</font>
<br><font size=2 face="sans-serif">Unix/Linux Home accounts</font>
<br><font size=2 face="sans-serif">Unix/Linux Application serving</font>
<br><font size=2 face="sans-serif">Apache</font>
<br><font size=2 face="sans-serif">Samba</font>
<br>
<br><font size=2 face="sans-serif">My issue is I am in the process of building a second cluster with the following spec</font>
<br>
<br><font size=2 face="sans-serif">HP DL380 G3's</font>
<br><font size=2 face="sans-serif">2 Gb RAM<br>
Gigabyte Ethernet for Replication</font>
<br><font size=2 face="sans-serif">Serial for Heartbeat</font>
<br><font size=2 face="sans-serif">Suse 9.0 prof ed, stripped down for server use only....</font>
<br><font size=2 face="sans-serif">Kernel Suse 2.4.21-99-smp4G.</font>
<br><font size=2 face="sans-serif">1 x 72GB 15k rpm drive for root</font>
<br><font size=2 face="sans-serif">2 x 72GB 15k rpm drive stripped to 135.6GB for drbd replication.</font>
<br><font size=2 face="sans-serif">Heartbeat 1.2.2</font>
<br><font size=2 face="sans-serif">The server will be running Samba3 and Postgresql 7.4.3 (and 8.0beta for testing)</font>
<br>
<br><font size=2 face="sans-serif">I originally installed drbd 0.6.12 which worked perfectly and has been running for a couple</font>
<br><font size=2 face="sans-serif">of weeks without any issues, but after the release of 0.7.3 I decided to bite the bullet and give</font>
<br><font size=2 face="sans-serif">it a go.</font>
<br>
<br><font size=2 face="sans-serif">The compile and install went fine, built as module not patched into Kernel, I re partitioned the </font>
<br><font size=2 face="sans-serif">135GB drive from one to two slices the second slice for the metadata, made the partition 500mb</font>
<br><font size=2 face="sans-serif">to be on the safe side. </font>
<br><font size=2 face="sans-serif">Originally used Reiserfs for the file system but switched too EXT3 to see if this would fix my issue !!!</font>
<br><font size=2 face="sans-serif">Created a new drbd.conf file (see below) and started up the primary side all fine, rebuilt the samba</font>
<br><font size=2 face="sans-serif">Postgresql file structures and restarted the Hearbeat services - All ran great.</font>
<br><font size=2 face="sans-serif">Next I configured the secondary side and started up drbd, it began to sync as expected and </font>
<br><font size=2 face="sans-serif">completed successfully after 2.5 hours I then started up heartbeat on the secondary side and </font>
<br><font size=2 face="sans-serif">forced a switch from the primary to the secondary - All appeared to be going ok until I</font>
<br><font size=2 face="sans-serif">noticed that Postgresql didn't restart on the now new primary.</font>
<br><font size=2 face="sans-serif">I checked the logfiles and the startup was complaining that the postgresql.conf file was invalid,</font>
<br><font size=2 face="sans-serif">on checking the file I found that it appeared to be corrupt, headrer was complete gibberish but the</font>
<br><font size=2 face="sans-serif">rest of the file contained normal text, I switched the services back over and the to my surprise</font>
<br><font size=2 face="sans-serif">Postgresql started fine , checked the conf file and it was just a normal text file !!!!!!</font>
<br>
<br><font size=2 face="sans-serif">I have tried rebuilding the drbd devices three times now and also have forced a full resync</font>
<br><font size=2 face="sans-serif">of the data twice but I still get the same issue.</font>
<br>
<br><font size=2 face="sans-serif">If I can't get 0.7.3 working in the next month I'm going to have to revert back to using 0.6.12</font>
<br><font size=2 face="sans-serif">so that I can get this cluster into production....<br>
</font>
<br><font size=2 face="sans-serif">Any help would be much appreciated - and thanks in advance.........<br>
</font>
<br><font size=2 face="sans-serif">drbd.conf file looks like this :-</font>
<br>
<br><font size=2 face="sans-serif">resource drbd0 {</font>
<br><font size=2 face="sans-serif"> protocol C;</font>
<br><font size=2 face="sans-serif"> incon-degr-cmd "echo '!DRBD! pri on incon-degr' | wall ; sleep 60 ; halt -f";</font>
<br><font size=2 face="sans-serif"> on uklnx04 {</font>
<br><font size=2 face="sans-serif"> device /dev/drbd0;</font>
<br><font size=2 face="sans-serif"> disk /dev/cciss/c0d1p1;</font>
<br><font size=2 face="sans-serif"> address 192.168.100.31:7788;</font>
<br><font size=2 face="sans-serif"> meta-disk /dev/cciss/c0d1p2 [0];</font>
<br><font size=2 face="sans-serif"> }</font>
<br><font size=2 face="sans-serif"> on uklnx03 {</font>
<br><font size=2 face="sans-serif"> device /dev/drbd0;</font>
<br><font size=2 face="sans-serif"> disk /dev/cciss/c0d1p1;</font>
<br><font size=2 face="sans-serif"> address 192.168.100.30:7788;</font>
<br><font size=2 face="sans-serif"> meta-disk /dev/cciss/c0d1p2 [0];</font>
<br><font size=2 face="sans-serif"> }</font>
<br><font size=2 face="sans-serif"> net {</font>
<br><font size=2 face="sans-serif"> timeout 60;</font>
<br><font size=2 face="sans-serif"> connect-int 10;</font>
<br><font size=2 face="sans-serif"> ping-int 10;</font>
<br><font size=2 face="sans-serif"> max-buffers 2048;</font>
<br><font size=2 face="sans-serif"> max-epoch-size 2048;</font>
<br><font size=2 face="sans-serif"> ko-count 4;</font>
<br><font size=2 face="sans-serif"> on-disconnect reconnect;</font>
<br><font size=2 face="sans-serif"> }</font>
<br><font size=2 face="sans-serif"> disk {</font>
<br><font size=2 face="sans-serif"> on-io-error detach;</font>
<br><font size=2 face="sans-serif"> }</font>
<br><font size=2 face="sans-serif"> syncer {</font>
<br><font size=2 face="sans-serif"> rate 50M;</font>
<br><font size=2 face="sans-serif"> group 1;</font>
<br><font size=2 face="sans-serif"> al-extents 257;</font>
<br><font size=2 face="sans-serif"> }</font>
<br><font size=2 face="sans-serif"> startup {</font>
<br><font size=2 face="sans-serif"> degr-wfc-timeout 120;</font>
<br><font size=2 face="sans-serif"> }</font>
<br><font size=2 face="sans-serif">}<br>
<br>
<br>
Regards<br>
<br>
Kevin Izzet<br>
<br>
Database / Unix / Linux Administrator<br>
Tel: (Code)+44(0)1475 655606<br>
Fax: (Code)+44(0)1475 637755<br>
Email: Kevin.Izzet@nsc.com<br>
<br>
<br>
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