Hi,
First,thanks everyone.
I have thought an idea: I use pacemaker for HA, and iscsi method to find SAN
disk.The service of HA is when an OSS fail, pacemaker select another OSS, and
resource agent script on selected OSS can discovery the OST disk and mount it
to an directory, then I can use #MDT> tunefs.lustre --writeconf <mount point>
using pdsh in the script (Lustre manual : changing a server NID), so the client
can know where the OST is.
But I really do not know if writeconf is damage to the data or the fs? I have
not test the idea now, it is only an idea
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