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--- cn:ccr:cloud:cloudstorage:drbd_su_wan [2013/10/22 15:26] – aiftim@infn.it
+++ cn:ccr:cloud:cloudstorage:drbd_su_wan [2013/10/22 19:10] (current) – [References] aiftim@infn.it
@@ Line 1: / Line 1: @@
+====== DRBD su WAN ======
+**Persone/Sedi coinvolte**:
+  * Stefano Stalio (LNGS)
+  * Federico Zani (Roma2)
+  * Domenico Diacono & Giacinto Donvito (Bari)
+  * Cristina Aiftimiei (Padova)
+===== Setup =====
+  * creati due device replicati tra le varie sedi in arch. Active/passive ( o Primary/Secondary)
+    * cream-11.pd - Primary / test-nat-linux.lngs - Secondary
+    * glsrv.ba - Primary / ozone.rm2 - Secondary
+===== Test =====
+  * versione DRBD 8.4 installata su tutti i nodi
+  * Esempi di file di configurazione & righe modificate:
+    * /etc/drbd.d/global_common.conf
+<code>
+global {
+	usage-count yes;
+	# minor-count dialog-refresh disable-ip-verification
+}
+common {
+[...]
+	net {
+		protocol C;
+	}
+        syncer {
+                 rate 300M;
+        }
+}
+</code>
+    * /etc/drbd.d/r0.res
+<code>
+# create new
+resource r0 {
+# DRBD device
+   device /dev/drbd0;
+   meta-disk internal;
+   on test-nat-linux.lngs.infn.it {
+      disk  /dev/vdb1;
+      address  192.84.135.204:7788;
+   }
+   on cream-11.pd.infn.it {
+      disk /dev/vg_r0/lv_r0;
+      address 193.206.210.164:7788;
+   }
+}
+</code>
+  * Verificata scrittura file sul disco montato sul primary server, smontare, scambio tra primary e secondary host, montare il disco sul secondo host (diventato primary) - tutti i file sono ancora presenti.
+===== File di log =====
+  * [[https://dl.dropboxusercontent.com/u/34258911/cloud_new/drbd.txt | DRBD install & config]]
+===== References =====
+  * [[http://www.drbd.org/users-guide/drbd-users-guide.html|Oficial DRBD Documentation]]
+  * [[http://www.drbd.org/users-guide/s-configure-resource.html|DRBD Configuration]]
+  * [[http://www.server-world.info/en/note?os=Scientific_Linux_6&p=drbd|DRBD Setup on SL6]]
+  * [[http://www.drbd.org/users-guide/s-manual-fail-over.html|DRBD Manual Failover]]