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I am working through an IFS issue and just learned that the mmap(n1) API
doesn't work correctly when the IFS *DIR is journaled. Ouch for any
replication vendors that use IFS journaling for businesses that use the IFS
for more than file storage (i.e. open source development).
My understanding is that PowerHA operates at a lower level than journaling
to accomplish replication but I am having trouble finding that fact in
documentation(n2) because it seems iCluster *does* rely on journaling, so
there's still a lot of journaling talk in the PowerHA docs.
n1 -
http://bit.ly/v71-mmap
n2 -
http://bit.ly/sg247994
The question: Does PowerHA require journals?
Aaron Bartell
litmis.com - Services for open source on IBM i
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