Re: why remove lcr from corosync release 2.0.x?

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On 6/6/2012 10:29 AM, george wrote:
> 
> 
> 2012/6/6 Fabio M. Di Nitto <fdinitto@xxxxxxxxxx
> <mailto:fdinitto@xxxxxxxxxx>>
> 
>     On 6/6/2012 10:11 AM, george wrote:
>     > Hi,
>     >
>     > 2012/6/6 Fabio M. Di Nitto <fdinitto@xxxxxxxxxx
>     <mailto:fdinitto@xxxxxxxxxx>
>     > <mailto:fdinitto@xxxxxxxxxx <mailto:fdinitto@xxxxxxxxxx>>>
>     >
>     >     Please keep your replies on the mailing list.
>     >
>     >     On 6/6/2012 9:47 AM, george wrote:
>     >     > Hi,
>     >     >
>     >     >
>     >     > 2012/6/6 Fabio M. Di Nitto <fdinitto@xxxxxxxxxx
>     <mailto:fdinitto@xxxxxxxxxx>
>     >     <mailto:fdinitto@xxxxxxxxxx <mailto:fdinitto@xxxxxxxxxx>>
>     >     > <mailto:fdinitto@xxxxxxxxxx <mailto:fdinitto@xxxxxxxxxx>
>     <mailto:fdinitto@xxxxxxxxxx <mailto:fdinitto@xxxxxxxxxx>>>>
>     >     >
>     >     >     On 6/6/2012 9:08 AM, george wrote:
>     >     >
>     >     >     >
>     >     >     > Also pacemaker v1.6.x and cman v3 will use lcr lib in
>     >     corosync, so
>     >     >     does
>     >     >     > it mean pcmk v1.6.x and cman v3 can’t use the newest
>     corosync?
>     >     >
>     >     >     corosync 2.0 has votequorum (see man pages) that obsoleted
>     >     cman in the
>     >     >     2.0 serie. You will need pcmk 1.1.7 or higher to work
>     with that.
>     >     >
>     >     > 1、Does that mean LCR lib will be permanently deleted from
>     >     corosync 2.0 ?
>     >
>     >     It has been removed permanently already.
>     >
>     >     >
>     >     > 2、corosync 2.0 could only be worked with pcmk 1.1.7 or
>     higher, and
>     >     > can't work with cman ?
>     >
>     >     Yes that is correct. cman has been replaced by votequorum.
>     cman will
>     >     only work with corosync 1.4.x (or higher) for several years to
>     come.
>     >
>     >  How does pcmk use the votequorum service, I can't find any votequorum
>     > interface
>     > call in pcmk source code.
> 
>     pcmk doesn´t need to call votequorum directly. votequorum is a quorum
>     provider.
> 
>     clients (such as pcmk) only need to use libquorum.
> 
>  I found quorum_initialize is called by init_quorum_connection,but
> init_quorum_connection  is only called by crm but not mcp.
> Is it only crm care about quorum ?

You will need to ask the pcmk specifics to Andrew or on the pacemaker
mailing list.

I don´t know all the details on how pcmk uses libquorum internally.

Fabio

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