If HostXML::test_ds_capacity only creates $DATASTORE_LOCATION/<id> assuming $DATASTORE_LOCATION itself exists, my next question here might be, which code creates $DATASTORE_LOCATION itself and when?
I don't think I missed an instruction to create $DATASTORE_LOCATION manually in the ON documentation.. i.e. $DATASTORE_LOCATION must be created by ON codes (maybe) during the first VM deployment. But like I described in the original email, our test ON4.4 fails at this. Hyunwoo Kim FermiCloud The $DATASTORE_LOCATION/<id> dir is created by the first VM deployment. That is why in HostXML::test_ds_capacity (called from Scheduler.cc), we use HOST/FREE_DISK as the free space when the ds-id subdir does not exist, to allow the first deployment. But now it seems that monitor_ds should also consider that $DATASTORE_LOCATION may actually not exist.
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