On 09/10/2012 12:15 PM, Lars Marowsky-Bree wrote:
On 2012-09-10T10:45:30, Alberto Menichetti<albmeniche...@tai.it> wrote:
thank you for the quick response.
Maybe SPOF is not the best definition, but when the vcenter is
unavailable the safety of my data is not guaranteed.
The safety remains guaranteed; the availability of your service wouldn't
be ;-)
Sorry, maybe I'm missing something, but suppose this scenario (also
remember that, being a 2-node cluster, I had to set
no-quorum-policy="ignore"):
1. the virtual center is unavailable
2. an event occurs that partition the cluster
3. at this point, both the nodes could try to start a filesystem
resource, thus compromising the data safety.
The fecing device I'd like to use is sdb.
If you have a working SBD setup, you do not need the external/vcenter
plugin any more.
What about using 2 different fencing mechanisms?
But why? It doesn't provide any benefit.
Do you think it could introduce some problems in the cluster or is
it a suggested/supported solution?
I'd like to use external/vcenter as first choice and rely on sdb
only if the first stonith mechanism fails (for example, because of
the vcenter unavailability).
Why?
Regards,
Lars
--
TAI S.r.l.
Alberto Menichetti
Area Mercato - Ingegneria dei Sistemi
System Engineer
50141 Firenze - Via Pazzagli, 2
Voice: +39 055 42661 - Fax +39 055 4266356
56125 Pisa - Viale Gramsci, 12
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e-mail: alb.meniche...@tai.it
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