The best option we have right now is to just kill the pvfs2-client and
then restart it with the --gossip-mask=<whatever> argument. You don't
have to unmount or even stop your applications to do this (the
operations will transparently retry), but of course you lose the state
of the previous instance of pvfs2-client-core if you were hoping to see
something in there.
I don't think we have a way to really do it on the fly without
restarting. It could be done as a /proc/sys/pvfs/ hook (we have similar
ones that modify acache and ncache settings in the pvfs2-client-core)
but it has never been implemented.
If you were really desperate you may be able to attach with a debugger
and change the value of the mask variable inside of gossip, but that's
kind of tricky.
-Phil
Becky Ligon wrote:
Is there currently any way to modify the gossip-debug-mask for the
client-core, once it has been started? I understand that if
PVFS2_DEBUGMASK is set before starting the client-core, then that debug
mask will be used, but what do you do if the client-core is already
running and you want to change the debug mask?
Becky
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