VNX: How To get real-time value of TreeQuotas info when using XML API (User Correctable)

*** this is workaround, behavior of tree quota cache has been changed by 7.1.75.0 and above

By design,XML API response does not reflect real-time value for spaceUsed and filesUsed in TreeQuotasUsed tag.
This article can show how to refresh cache value and how to un-cache these value.


### refreshing cached value
TreeQuotas cache is retained by C3 on controlStation.
Once refresh C3, XML API response reflects real-time value. command is below,

$ /celerra/commoncache/bin/c3refresh Tree-Quotas





### setting values as un-cached by C3
1)  Edit file /celerra/commoncache/bin/config/c3Configuration.xml

Find the following line:
<nonCacheableRec objectName="TreeQuotas" totallyNonCacheable="false" nonCacheableProperties="status" />

Change it to be:
<nonCacheableRec objectName="TreeQuotas" totallyNonCacheable="false" nonCacheableProperties="status,usedFiles,usedMB" />

2)  Restart c3 as follows:

# ps -efl | grep c3 | grep -v grep
0 S root      4820  2850  0  85   0 -  1157 wait   10:22 ?        00:00:00 /bin/sh /celerra/commoncache/bin/c3
0 S root      4821  4820  1  85   0 - 206747 409417 10:22 ?       00:00:08 /usr/java/bin/java -Xms32m -Xmx640m -cp ./config:........

# kill -9 4821 4820

Wait for 5 mins for C3 to start.