[Samba] How to reach partially online state in ctdb cluster

[Sabuj Pattanayek]

my workaround for the partially online bug is to "ctdb setifacelink $if up"
in /etc/rc.local, and again it didn't start happening until I added the 3rd
"identically" configured server into the cluster.

On Wed, Sep 24, 2014 at 7:56 AM, Sabuj Pattanayek <sabujp at gmail.com> wrote:

> Well, I'm using 1.0.114 from sernet and there's a strange bug that's
> causing it to come up in a partially online state unless I manually
> setifacelink up the bond that it thinks it's down even when it's up,
> basically the same as this problem :
>
> https://lists.samba.org/archive/samba-technical/2012-June/084899.html
>
> I have three servers each with two bonds that are made up of 2 eth/em
> links each. For some reason on the 3rd server which I recently added ctdb
> always thinks that one of the bonds is down even when it's not so it comes
> up in a partially online state until I ctdb setifacelink linkName up.
>
> So to get yourself into a partially online state I would do the following :
>
> Setup one or more of the servers to be on two different subnets/vlans and
> in your ctdb configuration have the same number of vip's as you do subnets
> per server. So if you have 3 servers that each sit on two subnets, make
> sure you have at least 6 total vip's, 3 per subnet. Then to get yourself
> into a partially online state one of the servers, ip link set $if down .
> Then the vip that used to be on that $if will migrate to another server
> where a similar interface on the same subnet exists leaving the other
> server with a down $if in a partially online state,
>
>
>
> On Wed, Sep 24, 2014 at 4:51 AM, Surabhi Bhalothia <
> surabhi.bhalothia at gmail.com> wrote:
>
>> Hi,
>>
>> I am testing CTDB failover cases. For one of my test case I need to
>> bring one of the nodes to partially online state .
>> Looking for  help with the configuration that needs to be done to reach
>> to this state.
>>
>> Thanks,
>> Surabhi
>>
>> NOTE: I am testing CTDB2.5 version
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>
>