Re: possibly silly question (raid failover)

[Miles Fidelman <mfidelman@meetinghouse.net>]

Robin Hill wrote:
> Sorry, my mistake - it should be -p n3, or -p n4. You'll want -p f6/-p
> f8 to get a far configuration though, but yes, that should give good
> redundancy against a single node failure.
>
>> which then leaves the question of whether the md driver, itself, can be
>> failed over from one node to another
>>
> I don't see why not. You'll probably need to force assembly though, as
> it's likely the devices will be slightly out-of-synch after the node
> failure.
>
>
sort of would expect to have to resynch

has anybody out there actually tried this at some point?

I've been trying to find OCF resource agents for handling a RAID 
failover, and only coming up with deprecated functions with little 
documentation - the only thing that even sounds remotely close is a 
heartbeat2 "md group take over" resource agent, but all I can find are 
references to it, no actual documentation

Miles


-- 
In theory, there is no difference between theory and practice.
In<fnord>  practice, there is.   .... Yogi Berra