Hi,
Recently, I found out that NDMP DSA saves (nsrndmp_save -M) are not
behaving as expected when you want to backup to a storage node. My naive
approach was to have the following config:
backup command: nsrndmp_save -M -T dump;
storage nodes: legatosn.tau.ac.il;
This produces the following, undesirable, results:
The NDMP client will send the NDMP stream to the DSA agent on the
Networker *SERVER* which in turn will send the output to the desired
storage node. This means that the server is now getting the NDMP data
stream, encapsulates it and sends it to the SN. The better choice is to
have:
backup command: nsrndmp_save -M -T dump -P legatosn.tau.ac.il;
storage nodes: legatosn.tau.ac.il;
This will run the DSA agent on the storage node and so all data will
go directly to the it.
While this is documented, it was unclear to me what was happening
till I checked things with tcpdump (actually Solaris's snoop).
I hope this will help some of you.
--
-- Yaron.
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