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Re: [Linux-cluster] Netmask bit set to 32 in service ip



Quoting Lon Hohberger <lhh redhat com>:


On Wed, 2008-02-13 at 12:33 +0200, Pavlos Parissis wrote:
Hi,

I have a question which may sounds stupid.
why the netmask for the service ip is set to 32 while the IP belongs
to a network with different netmask?

...snip...
Strange that the netmask is wrong.  You can force it to the correct one
by doing:

    <ip monitor_link="1" address="10.10.21.138/26"/>
The above worked.

Or, you could apply the attached patch:

    cd /usr/share/cluster; patch -p0 < /tmp/fs.sh-netmask.patch

... and see if it helps you.  If it doesn't, you can revert the patch:

    cd /usr/share/cluster; patch -Rp0 < /tmp/fs.sh-netmask.patch

-- Lon


but not this one

ocsi2# pwd
/usr/share/cluster
ocsi2# cat /tmp/ip.sh-netmask.patch
Index: ip.sh
===================================================================
RCS file: /cvs/cluster/cluster/rgmanager/src/resources/ip.sh,v
retrieving revision 1.5.2.17
diff -u -r1.5.2.17 ip.sh
--- ip.sh       22 Mar 2007 23:15:59 -0000      1.5.2.17
+++ ip.sh       13 Feb 2008 18:28:12 -0000
@@ -692,6 +692,10 @@
                        if [ $? -ne 0 ]; then
                                continue
                        fi
+
+                       if [ "${addr/\/*/}" = "${addr}" ]; then
+                               addr="$addr/$maskbits"
+                       fi
                        ocf_log info "Adding IPv4 address $addr to $dev"
                fi
                if [ "$1" = "del" ]; then
ocsi2# patch -p0 <  /tmp/ip.sh-netmask.patch
patching file ip.sh
ocsi2# clusvcadm -R ppr1
Member ocsi2-cluster trying to restart ppr1...success
ocsi2# ip add sh
1: lo: <LOOPBACK,UP> mtu 16436 qdisc noqueue
    link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00
    inet 127.0.0.1/8 brd 127.255.255.255 scope host lo
2: bond0: <BROADCAST,MULTICAST,MASTER,UP> mtu 1500 qdisc noqueue
    link/ether 00:19:bb:3b:6c:b1 brd ff:ff:ff:ff:ff:ff
    inet 10.10.21.133/26 brd 10.10.21.191 scope global bond0
    inet 10.10.21.138/32 scope global bond0
3: bond1: <BROADCAST,MULTICAST,MASTER,UP> mtu 1500 qdisc noqueue
    link/ether 00:1a:4b:ff:9c:e8 brd ff:ff:ff:ff:ff:ff
    inet 10.10.21.69/27 brd 10.10.21.95 scope global bond1
    inet 10.10.21.71/32 scope global bond1
4: bond2: <BROADCAST,MULTICAST,MASTER,UP> mtu 1500 qdisc noqueue
    link/ether 00:1a:4b:ff:9c:ea brd ff:ff:ff:ff:ff:ff
    inet 10.10.21.228/27 brd 10.10.21.255 scope global bond2
5: eth0: <BROADCAST,MULTICAST,SLAVE,UP> mtu 1500 qdisc pfifo_fast master bond0 qlen 1000
    link/ether 00:19:bb:3b:6c:b1 brd ff:ff:ff:ff:ff:ff
6: eth1: <BROADCAST,MULTICAST,SLAVE,UP> mtu 1500 qdisc pfifo_fast master bond0 qlen 1000
    link/ether 00:19:bb:3b:6c:b1 brd ff:ff:ff:ff:ff:ff
7: eth2: <BROADCAST,MULTICAST,SLAVE,UP> mtu 1500 qdisc pfifo_fast master bond1 qlen 1000
    link/ether 00:1a:4b:ff:9c:e8 brd ff:ff:ff:ff:ff:ff
8: eth3: <BROADCAST,MULTICAST,SLAVE,UP> mtu 1500 qdisc pfifo_fast master bond1 qlen 1000
    link/ether 00:1a:4b:ff:9c:e8 brd ff:ff:ff:ff:ff:ff
9: eth4: <BROADCAST,MULTICAST,SLAVE,UP> mtu 1500 qdisc pfifo_fast master bond2 qlen 1000
    link/ether 00:1a:4b:ff:9c:ea brd ff:ff:ff:ff:ff:ff
10: eth5: <BROADCAST,MULTICAST,SLAVE,UP> mtu 1500 qdisc pfifo_fast master bond2 qlen 1000
    link/ether 00:1a:4b:ff:9c:ea brd ff:ff:ff:ff:ff:ff
11: eth6: <BROADCAST,MULTICAST> mtu 1500 qdisc noop qlen 1000
    link/ether 00:19:bb:3b:18:38 brd ff:ff:ff:ff:ff:ff
12: eth7: <BROADCAST,MULTICAST> mtu 1500 qdisc noop qlen 1000
    link/ether 00:19:bb:3b:18:3a brd ff:ff:ff:ff:ff:ff
ocsi2# uname -a
Linux ocsi2 2.6.9-42.ELsmp #1 SMP Wed Jul 12 23:32:02 EDT 2006 x86_64 x86_64 x86_64 GNU/Linux
ocsi2# cat /etc/redhat-release
Red Hat Enterprise Linux AS release 4 (Nahant Update 4)


I really wonder how an application can use that IP as a source IP.

Regards,
Pavlos




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