[Linux-HA] check, if slaves data is actual
Alan Robertson
alanr at unix.sh
Tue Jul 26 09:54:40 MDT 2005
Lars Marowsky-Bree wrote:
> On 2005-07-26T09:26:37, Alan Robertson <alanr at unix.sh> wrote:
>
>>But, there is still the internal split-brain case...
>
> Sure, I know that. However, it takes a double failure for this to
> occur.
I knew you knew it - but you didn't mention it - and it _is_ relevant to
the discussion at hand.
Requiring a double failure doesn't decrease the consequences of the
problem - it just makes it less likely.
BUT the short answer is...
DRBD will refuse to take over if it knows things are inconsistent. The
case Lars and I are talking about is really when it can fail to know
it's inconsistent.
--
Alan Robertson <alanr at unix.sh>
"Openness is the foundation and preservative of friendship... Let me
claim from you at all times your undisguised opinions." - William
Wilberforce
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