[Pacemaker] ifstatus OCF RA

[Vladislav Bogdanov]

Hi again,
attached is a bit more polished revision.

Best,
Vladislav

22.02.2011 15:01, Vladislav Bogdanov wrote:
> Hi Dejan,
> 
> 22.02.2011 13:02, Dejan Muhamedagic wrote:
>> Hi,
>>
>> Where can you get STP stuff from? How to interpret it? And then
> 
> Please look at attached RA.
> 
> I decided that today is a good time to finally brace myself to find 5
> hours to write it, thanks Frederik ;) .
> Tested, "works for me" (c) in that configuration I talked earlier - STP
> bridge over 1x10Gbps eth + 2x1Gpbs bond.
> (Hopefully) Supports any combination of bridges, bonds, vlans and
> physical ethernet interfaces.
> Tries to guess correct upstream bridge ports, can't test it more
> thoroughly due to absence of more switch hardware (I currently have only
> one c3570x stack per cluster).
> May require some additional checks to be included.
> Also it is linux-specific and requires bash because of my laziness and
> fact that I mainly use Fedora which has nothing against bash yet.
> Can be considered for inclusion in resource-agents (with common license,
> GPLv2?).
> 
>> how do you know it's something that won't change within next five
>> minutes? Finally, every failover can incur downtime, is it worth
>> the trouble because what you want is just more performance?
> 
> This could be controlled by non-inf location score and f.e. time-based
> stickiness.
> Anyways, I'd better have 10 seconds lockup rather than 10Mb/s per-client
> read for long time when second cluster node (32 disks in HW RAID10) is
> able to easily give another 250-400Mb/s of aggregate throughput.
> 
>> Perhaps you don't even need the extra performance at the time.
> 
> This depends on what SLA I provide services with...
> 
>> Other than that it sounds interesting :-)
> 
> Then, please look at the implementation ;)
> 
> Best,
> Vladislav
> 
> 
> 
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