<html><head><style type='text/css'>p { margin: 0; }</style></head><body><div style='font-family: Times New Roman; font-size: 12pt; color: #000000'><font size="3">Hello,</font><div style="color: rgb(0, 0, 0); font-family: 'Times New Roman'; font-size: 12pt; "><br></div><div id="" style="color: rgb(0, 0, 0); font-family: 'Times New Roman'; font-size: 12pt; ">I am using DRBD (8.3.7) on 2 Ubuntu 10.04 amd64 virtual machines. I have configured 2 DRBD devices, /dev/drbd0 and /dev/drbd1 as follows:</div><div id=""><div id=""><font face="'courier new', courier, monaco, monospace, sans-serif" size="2">global { usage-count no; }</font></div><div id=""><font face="'courier new', courier, monaco, monospace, sans-serif" size="2">common {</font></div><div id=""><font face="'courier new', courier, monaco, monospace, sans-serif" size="2"> syncer { rate 1000M; }</font></div><div id=""><font face="'courier new', courier, monaco, monospace, sans-serif" size="2">}</font></div><div id=""><font face="'courier new', courier, monaco, monospace, sans-serif" size="2" id="">resource r0 {</font></div><div id=""><font face="'courier new', courier, monaco, monospace, sans-serif" size="2"> protocol C;</font></div><div id="aeaoofnhgocdbnbeljkmbjdmhbcokfdb-mousedown"><font face="'courier new', courier, monaco, monospace, sans-serif" size="2"> startup {</font></div><div id="aeaoofnhgocdbnbeljkmbjdmhbcokfdb-mousedown"><font face="'courier new', courier, monaco, monospace, sans-serif" size="2"> wfc-timeout 15;</font></div><div id="aeaoofnhgocdbnbeljkmbjdmhbcokfdb-mousedown"><font face="'courier new', courier, monaco, monospace, sans-serif" size="2"> degr-wfc-timeout 60;</font></div><div id="aeaoofnhgocdbnbeljkmbjdmhbcokfdb-mousedown"><font face="'courier new', courier, monaco, monospace, sans-serif" size="2"> }</font></div><div id="aeaoofnhgocdbnbeljkmbjdmhbcokfdb-mousedown"><font face="'courier new', courier, monaco, monospace, sans-serif" size="2"> net {</font></div><div id="aeaoofnhgocdbnbeljkmbjdmhbcokfdb-mousedown"><font face="'courier new', courier, monaco, monospace, sans-serif" size="2"> after-sb-0pri discard-zero-changes;</font></div><div id="aeaoofnhgocdbnbeljkmbjdmhbcokfdb-mousedown"><font face="'courier new', courier, monaco, monospace, sans-serif" size="2" id="aeaoofnhgocdbnbeljkmbjdmhbcokfdb-mousedown"> after-sb-1pri discard-secondary;</font></div><div id="aeaoofnhgocdbnbeljkmbjdmhbcokfdb-mousedown"><font face="'courier new', courier, monaco, monospace, sans-serif" size="2"> after-sb-2pri disconnect;</font></div><div id="aeaoofnhgocdbnbeljkmbjdmhbcokfdb-mousedown"><font face="'courier new', courier, monaco, monospace, sans-serif" size="2"> cram-hmac-alg md5;</font></div><div id="aeaoofnhgocdbnbeljkmbjdmhbcokfdb-mousedown"><font face="'courier new', courier, monaco, monospace, sans-serif" size="2"> shared-secret "thesecretpassword";</font></div><div id="aeaoofnhgocdbnbeljkmbjdmhbcokfdb-mousedown"><font face="'courier new', courier, monaco, monospace, sans-serif" size="2"> }</font></div><div id="aeaoofnhgocdbnbeljkmbjdmhbcokfdb-mousedown"><font face="'courier new', courier, monaco, monospace, sans-serif" size="2"> on node1 {</font></div><div id="aeaoofnhgocdbnbeljkmbjdmhbcokfdb-mousedown"><font face="'courier new', courier, monaco, monospace, sans-serif" size="2"> device /dev/drbd0;</font></div><div id="aeaoofnhgocdbnbeljkmbjdmhbcokfdb-mousedown"><font face="'courier new', courier, monaco, monospace, sans-serif" size="2"> disk /dev/vdb1;</font></div><div id="aeaoofnhgocdbnbeljkmbjdmhbcokfdb-mousedown"><font face="'courier new', courier, monaco, monospace, sans-serif" size="2"> address 192.168.1.10:7788;</font></div><div id="aeaoofnhgocdbnbeljkmbjdmhbcokfdb-mousedown"><font face="'courier new', courier, monaco, monospace, sans-serif" size="2"> meta-disk internal;</font></div><div id="aeaoofnhgocdbnbeljkmbjdmhbcokfdb-mousedown"><font face="'courier new', courier, monaco, monospace, sans-serif" size="2"> }</font></div><div id="aeaoofnhgocdbnbeljkmbjdmhbcokfdb-mousedown"><font face="'courier new', courier, monaco, monospace, sans-serif" size="2"> on node2 {</font></div><div id="aeaoofnhgocdbnbeljkmbjdmhbcokfdb-mousedown"><font face="'courier new', courier, monaco, monospace, sans-serif" size="2"> device /dev/drbd0;</font></div><div id="aeaoofnhgocdbnbeljkmbjdmhbcokfdb-mousedown"><font face="'courier new', courier, monaco, monospace, sans-serif" size="2"> disk /dev/vdb1;</font></div><div id="aeaoofnhgocdbnbeljkmbjdmhbcokfdb-mousedown"><font face="'courier new', courier, monaco, monospace, sans-serif" size="2"> address 192.168.1.11:7788;</font></div><div id="aeaoofnhgocdbnbeljkmbjdmhbcokfdb-mousedown"><font face="'courier new', courier, monaco, monospace, sans-serif" size="2"> meta-disk internal;</font></div><div id="aeaoofnhgocdbnbeljkmbjdmhbcokfdb-mousedown"><font face="'courier new', courier, monaco, monospace, sans-serif" size="2"> }</font></div><div id="aeaoofnhgocdbnbeljkmbjdmhbcokfdb-mousedown"><font face="'courier new', courier, monaco, monospace, sans-serif" size="2">}</font></div><div id="aeaoofnhgocdbnbeljkmbjdmhbcokfdb-mousedown"><font face="'courier new', courier, monaco, monospace, sans-serif" size="2" id="aeaoofnhgocdbnbeljkmbjdmhbcokfdb-mousedown">resource r1 {</font></div><div id="aeaoofnhgocdbnbeljkmbjdmhbcokfdb-mousedown"><font face="'courier new', courier, monaco, monospace, sans-serif" size="2"> protocol C;</font></div><div id="aeaoofnhgocdbnbeljkmbjdmhbcokfdb-mousedown"><font face="'courier new', courier, monaco, monospace, sans-serif" size="2"> startup {</font></div><div id="aeaoofnhgocdbnbeljkmbjdmhbcokfdb-mousedown"><font face="'courier new', courier, monaco, monospace, sans-serif" size="2"> wfc-timeout 15;</font></div><div id="aeaoofnhgocdbnbeljkmbjdmhbcokfdb-mousedown"><font face="'courier new', courier, monaco, monospace, sans-serif" size="2"> degr-wfc-timeout 60;</font></div><div id="aeaoofnhgocdbnbeljkmbjdmhbcokfdb-mousedown"><font face="'courier new', courier, monaco, monospace, sans-serif" size="2"> }</font></div><div id="aeaoofnhgocdbnbeljkmbjdmhbcokfdb-mousedown"><font face="'courier new', courier, monaco, monospace, sans-serif" size="2"> net {</font></div><div id="aeaoofnhgocdbnbeljkmbjdmhbcokfdb-mousedown"><font face="'courier new', courier, monaco, monospace, sans-serif" size="2"> after-sb-0pri discard-zero-changes;</font></div><div id="aeaoofnhgocdbnbeljkmbjdmhbcokfdb-mousedown"><font face="'courier new', courier, monaco, monospace, sans-serif" size="2"> after-sb-1pri discard-secondary;</font></div><div id="aeaoofnhgocdbnbeljkmbjdmhbcokfdb-mousedown"><font face="'courier new', courier, monaco, monospace, sans-serif" size="2"> after-sb-2pri disconnect;</font></div><div id="aeaoofnhgocdbnbeljkmbjdmhbcokfdb-mousedown"><font face="'courier new', courier, monaco, monospace, sans-serif" size="2"> cram-hmac-alg md5;</font></div><div id="aeaoofnhgocdbnbeljkmbjdmhbcokfdb-mousedown"><font face="'courier new', courier, monaco, monospace, sans-serif" size="2"> shared-secret "thesecretpassword";</font></div><div id="aeaoofnhgocdbnbeljkmbjdmhbcokfdb-mousedown"><font face="'courier new', courier, monaco, monospace, sans-serif" size="2"> }</font></div><div id="aeaoofnhgocdbnbeljkmbjdmhbcokfdb-mousedown"><font face="'courier new', courier, monaco, monospace, sans-serif" size="2"> on node1 {</font></div><div id="aeaoofnhgocdbnbeljkmbjdmhbcokfdb-mousedown"><font face="'courier new', courier, monaco, monospace, sans-serif" size="2"> device /dev/drbd1;</font></div><div id="aeaoofnhgocdbnbeljkmbjdmhbcokfdb-mousedown"><font face="'courier new', courier, monaco, monospace, sans-serif" size="2"> disk /dev/vdc1;</font></div><div id="aeaoofnhgocdbnbeljkmbjdmhbcokfdb-mousedown"><font face="'courier new', courier, monaco, monospace, sans-serif" size="2"> address 192.168.1.10:7789;</font></div><div id="aeaoofnhgocdbnbeljkmbjdmhbcokfdb-mousedown"><font face="'courier new', courier, monaco, monospace, sans-serif" size="2"> meta-disk internal;</font></div><div id="aeaoofnhgocdbnbeljkmbjdmhbcokfdb-mousedown"><font face="'courier new', courier, monaco, monospace, sans-serif" size="2"> }</font></div><div id="aeaoofnhgocdbnbeljkmbjdmhbcokfdb-mousedown"><font face="'courier new', courier, monaco, monospace, sans-serif" size="2"> on node2 {</font></div><div id="aeaoofnhgocdbnbeljkmbjdmhbcokfdb-mousedown"><font face="'courier new', courier, monaco, monospace, sans-serif" size="2"> device /dev/drbd1;</font></div><div id="aeaoofnhgocdbnbeljkmbjdmhbcokfdb-mousedown"><font face="'courier new', courier, monaco, monospace, sans-serif" size="2"> disk /dev/vdc1;</font></div><div id="aeaoofnhgocdbnbeljkmbjdmhbcokfdb-mousedown"><font face="'courier new', courier, monaco, monospace, sans-serif" size="2"> address 192.168.1.11:7789;</font></div><div id="aeaoofnhgocdbnbeljkmbjdmhbcokfdb-mousedown"><font face="'courier new', courier, monaco, monospace, sans-serif" size="2"> meta-disk internal;</font></div><div id="aeaoofnhgocdbnbeljkmbjdmhbcokfdb-mousedown"><font face="'courier new', courier, monaco, monospace, sans-serif" size="2"> }</font></div><div id="aeaoofnhgocdbnbeljkmbjdmhbcokfdb-mousedown"><font face="'courier new', courier, monaco, monospace, sans-serif" size="2">}</font></div></div><div id="" style="color: rgb(0, 0, 0); font-family: 'Times New Roman'; font-size: 12pt; "><br></div><div id="aeaoofnhgocdbnbeljkmbjdmhbcokfdb-mousedown" style="color: rgb(0, 0, 0); font-family: 'Times New Roman'; font-size: 12pt; ">Shutting these VMs down gracefully takes over 30 minutes as the "rmmod drbd" command in /etc/rc0.d/K08drbd blocks. Moreover, it seems that access to any information related to the kernel modules blocks as well (e.g. "lsmod", accesses to /proc/modules, etc). Do you have any ideas on what is causing the removal of this module to block and how to resolve it?</div><div id="aeaoofnhgocdbnbeljkmbjdmhbcokfdb-mousedown" style="color: rgb(0, 0, 0); font-family: 'Times New Roman'; font-size: 12pt; "><br></div><div id="aeaoofnhgocdbnbeljkmbjdmhbcokfdb-mousedown" style="color: rgb(0, 0, 0); font-family: 'Times New Roman'; font-size: 12pt; ">Thanks,</div><div id="aeaoofnhgocdbnbeljkmbjdmhbcokfdb-mousedown" style="color: rgb(0, 0, 0); font-family: 'Times New Roman'; font-size: 12pt; "><br></div><div id="aeaoofnhgocdbnbeljkmbjdmhbcokfdb-mousedown" style="color: rgb(0, 0, 0); font-family: 'Times New Roman'; font-size: 12pt; ">Andrew</div></div></body></html>