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I was on a customer server, I did kill -USR1 pid, it filled up / and server stopped responding. / was 10G /tmp/glusterdump was around 6.5G We should have some sort of control to take care of situation like this.
PATCH: http://patches.gluster.com/patch/3184 in master (performance/io-cache: Dump private information)
PATCH: http://patches.gluster.com/patch/3183 in release-3.0 (performance/io-cache: Dump private information)
PATCH: http://patches.gluster.com/patch/3259 in release-3.0 (libglusterfs: Provide ability to filter output of state dump)
PATCH: http://patches.gluster.com/patch/4370 in master (Provides the ability to filter the output of state dump)