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Thread: Possibly migrating from Solaris to Suse + ASM ???




Possibly migrating from Solaris to Suse + ASM ???
user name
2007-01-05 17:56:07
I am running OCFSv2 in production in 2 month, and in staging
for approx
6
month. While it is stable in _normal_ conditions, failure
tests shows,
that
it don't survive many failure scenarios (causing all servers
to reboot,
or
switching to readonly mode). So, it is not a simple choice -
use it or
not.

...Alexei is right. When OCFS is not challenged with
abnormal conditions
to respond to it is largely just fine. But then cluster
software is
supposed to be able to handle edge cases--that's why we
cluster.  In our
closest estimate here at PolyServe, over 50% of all of our
code only
executes in cases where servers are not behaving corectly
for any of
such reasons as interconnect/SAN/host responsiveness issues
followed by
the transition/recovery and fencing that must occur. Those
are the hard
parts to get right in clusterware...unfortunately you can't
"benchmark"
such "features"

...A parallel to this is shared-nothing database
architecture. If you
code apps correctly and tune it right and don't have any
stability
issues in production, such applications can "work just
fine"...the wheat
seperated from the chaff as soon as nodes start to flake out

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