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List:       evms-devel
Subject:    [Evms-devel] Re: [Evms-cluster] unsuccessful install attempt: ha-1.0.4.so fails to load
From:       Steve Dobbelstein <steved () us ! ibm ! com>
Date:       2003-12-09 15:58:23
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Shashi Rao wrote:
> Hi
>
> I am trying to set up a clustered filesystem on EVMS on a SAN
> connected to two RH9 linux boxes on a LAN.
>
> I have EVMS 2.2.0 (tarball) and Linux-HA 1.0.4 (rpm). As a last
> ditch effort, I also tried Linux-HA 1.1.3 (rpm).
>
> Here's an activity log:
>
> 1. Install heartbeat rpms
>
> rpm -qa | grep heartbeat :
>
> heartbeat-pils-1.1.3-1.rh.9
> heartbeat-1.1.3-1.rh.9
> heartbeat-stonith-1.1.3-1.rh.9
>
> 2. Configure /etc/ha.d files
>
> ha.cf, haresources, authkeys
>
> summary: ucast to other's IP address, use crc, respawn ccm and evmsd
>
> 3. Start heartbeat
>
> ps aux | grep heartbeat:
>
> root      1229  0.0  0.2  2600 2600 ?        SL   00:54   0:00 heartbeat:
heartbeat: > master control process
> nobody    1247  0.0  0.2  2440 2440 ?        SL   00:54   0:00 heartbeat:
heartbeat: > FIFO reader
> nobody    1248  0.0  0.2  2412 2412 ?        SL   00:54   0:00 heartbeat:
heartbeat: > write: ucast eth0
> nobody    1249  0.0  0.2  2412 2412 ?        SL   00:54   0:00 heartbeat:
heartbeat: > read: ucast eth0
> 501       1394  0.0  0.0  2116  872 ?        S    00:56   0:00
/usr/lib/heartbeat/ccm
>
> 4. Configure, build, and install evms
>
> config.log indicates a successful build of (among other things):
> csm, and plugins/ha/*
>
> 5. Fire up the evms UI. It responds with:
>
> Engine: The plug-in linuxha in module /lib/evms/ha-1.0.4.so failed
> to load.  The plug-in's setup_evms_plugin() function failed with
> error code 19: No such device
>
> What does this mean?
>
> It appears that plugins/ha/ece.c:ece_init() flakes because it's
> trying to talk to a "master". If this master is evmsd, it is indeed
> running:
>
> ps aux | grep evmsd
>
> root      1395  0.0  0.1  2572  988 ?        S    00:56   0:00
/sbin/evmsd
>
> Needless to say, I am unable to do the "Actions -> Create ->
> Container -> Clustered ..." suggested in the user manual, because
> the "Clustered" option is non-existent.
>
> I must be missing something obvious to the experienced eye. Google
> and RTFM have helped thus far, but I am now stumped. Any further
> help would be greatly appreciated. I'm eager to provide more
> information to anybody that asks.

I know that one not so obvious setup task is to make sure the HA queues are
created.  From a previous post to this mailing list by Jeremy Jackson on
2003 Nov 17:
---------
One other problem that I've had is that you have to create the FIFOs
manually that allow evmsd to communicate with heartbeat:

# ls -l /var/lib/heartbeat/api

should have

p-w-------    1 hacluste haclient        0 Jun 17 20:49 ccm.req
prw-------    1 hacluste haclient        0 Jun 17 22:45 ccm.rsp
pr--------    1 root     root            0 Jun 17 22:44 evms.req
prw-------    1 root     root            0 Jun 17 22:45 evms.rsp
p-w-------    1 hacluste haclient        0 Jun 14 22:41 ipfail.req
prw-------    1 hacluste haclient        0 Jun 14 22:41 ipfail.rsp
pr--------    1 root     root            0 Jun 14 22:43 ping.req
prw-------    1 root     root            0 Jun 14 22:43 ping.rsp

If the evms.* pipes are missing, you use mkfifo command if I recall.

You should be able to run /usr/lib/heartbeat/ccm_testclient and get some
diagnostics.
Also, /usr/lib/heartbeat/api_test should give some output.
---------

Also, make sure the evms queues are owned by root or it won't work.

Hope this helps.  Feel free to post again if it doesn't.

Steve D.



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