<div dir="ltr">sorry i'm just curious, why you are using drbd if you have a share storage? </div><div class="gmail_extra"> <div class="gmail_quote">2013/8/28 Goutam Baul <<a href="mailto:goutam.baul@rp-sg.in" target="_blank">goutam.baul@rp-sg.in</a>> <blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div link="blue" vlink="purple" lang="EN-US"><div> >On 2013/8/27 wrote <div><div><div><div class="im">>Are you using san with emc powerpath? </div>Yes </div><div class="im">>drbd service start on boot? </div></div><div class="im">>start drbd by hand and give the command ls -l dev/drbd/by-res/r0/1 and ls -l >dev/drbd/by-res/r0/0 </div></div><div> It works fine if we do things manually. The only issue comes when we try to run things under rgmanager. <div>>>On 2013/8/27 Goutam Baul wrote<div><div class="h5"><div><div>>>Dear List, >>We have configured DRBD 8.4.3 (community version) in the sense that we are able to manually start DRBD at both the nodes, make nodes primary or secondary and >>data is getting replicated between the primary and the secondary node. We are doing this for our postfix mail server. The drbd configuration file is >>resource r0 {>>startup {>> wfc-timeout 1; >> degr-wfc-timeout 2;>> }>> volume 0 { >> device /dev/drbd1;>> disk /dev/emcpowera2; >> meta-disk /dev/emcpowera5;>> }>> volume 1 { >> device /dev/drbd2;>> disk /dev/emcpowera3; >> meta-disk /dev/emcpowera6;>> }>> on <a href="http://drmail1.cesc.co.in" target="_blank">drmail1.cesc.co.in</a> { >> address <a href="http://10.50.4.14:7789" target="_blank">10.50.4.14:7789</a>;>> } >> on <a href="http://drbdtest2.cesc.co.in" target="_blank">drbdtest2.cesc.co.in</a> {>> address <a href="http://10.50.81.253:7789" target="_blank">10.50.81.253:7789</a>; >> }>>} >>We want to run postfix mailing system on a RHCS cluster suite for high availability. The mail-store and the mail-queue of postfix will be on the DRBD setup so that >>they are replicated from our data center to our disaster recovery site. The cluster.conf is as follows: >><?xml version="1.0"?>>><cluster config_version="27" name="dr-mail"> >> <fence_daemon clean_start="1" post_join_delay="30"/> >> <clusternodes> >> <clusternode name="<a href="http://drmail1.cesc.co.in" target="_blank">drmail1.cesc.co.in</a>" nodeid="1"> >> <fence>>> <method name="Method1_drac"> >> <device name="fence_drac1"/> >> </method> >> </fence> >> </clusternode> >> <clusternode name="<a href="http://drmail2.cesc.co.in" target="_blank">drmail2.cesc.co.in</a>" nodeid="2"> >> <fence>>> <method name="Method1_drac"> >> <device name="fence_drac2"/>>> </method> >> </fence>>> </clusternode> >> </clusternodes>>> <cman expected_votes="1" two_node="1"/> >> <fencedevices>>> <fencedevice agent="fence_drac5" cmd_prompt="admin1->" ipaddr="10.50.4.22" login="root" module_name="fence_drac1" name="fence_drac1" passwd="calvin" secure="on"/> >> <fencedevice agent="fence_drac5" cmd_prompt="admin1->" ipaddr="10.50.4.23" login="root" module_name="fence_drac2" name="fence_drac2" passwd="calvin" secure="on"/> >> </fencedevices> >> <rm> >> <failoverdomains> >> <failoverdomain name="dr_mail" nofailback="0" ordered="1" restricted="1"> >> <failoverdomainnode name="<a href="http://drmail1.cesc.co.in" target="_blank">drmail1.cesc.co.in</a>" priority="1"/> >> <failoverdomainnode name="<a href="http://drmail2.cesc.co.in" target="_blank">drmail2.cesc.co.in</a>" priority="2"/> </failoverdomain> >> </failoverdomains> >> <resources> >> <ip address="10.50.4.20" monitor_link="on" sleeptime="10"/> >> <drbd name="drbd-mail" resource="r0"> >> <fs device="/dev/drbd/by-res/r0/0" force_unmount="1" fsid="61850" mountpoint="/home" fstype="ext3" name="drbd-mailstore" options="noatime"/> >> <fs device="/dev/drbd/by-res/r0/1" force_unmount="1" fsid="61855" mountpoint="/var/spool/postfix" fstype="ext3" name="drbd-spool" options="noatime"/> >> </drbd> >> <script file="/etc/init.d/postfix" name="postfix" /> >> </resources> >> <service domain="dr_mail" name="mail" recovery="relocate"> >> <ip ref="10.50.4.20"/> >> <drbd ref="drbd-mail" /> <script ref="postfix" /> >> </service> >> </rm>>> </cluster>>> If we run this RHCS cluster, we get the error in the log as >> Aug 27 17:38:19 drmail1 rgmanager[4695]: drbd not found in /proc/modules. Do you need to modprobe? >> If we run the RHCS cluster after issuing the modprobe drbd command we get the following message >> 1: Failure: (127) Device minor not allocated>> additional info from kernel: >> unknown minor>> Command 'drbdsetup role 1' terminated with exit code 10 >> <debug> DRBD resource r0 already configured>> DRBD resource r0 already configured >> Start of mail complete >> But the DRBD service is not starting up and therefore the corresponding devices are not being created. Thus the log file returns the error >> Aug 27 17:38:33 drmail1 rgmanager[5147]: stop: Could not match /dev/drbd/by-res/r0/1 with a real device>> Aug 27 17:38:33 drmail1 rgmanager[5166]: stop: Could not match /dev/drbd/by-res/r0/0 with a real device >> We have built the DRBD rpm files from the source using rpmbuild and copied the drbd.sh.rhcs and drbd.metadata.rhcs files from the script folder of the source to the >> /usr/share/cluster folder as drbd.sh and drbd.metadata respectively. We are using RHEL 6.1 (64 bit). </div></div></div></div></div></div></div></div> -- Linux-cluster mailing list <a href="mailto:Linux-cluster@redhat.com">Linux-cluster@redhat.com</a> <a href="https://www.redhat.com/mailman/listinfo/linux-cluster" target="_blank">https://www.redhat.com/mailman/listinfo/linux-cluster</a> </blockquote></div> -- esta es mi vida e me la vivo hasta que dios quiera </div>