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#!/bin/sh
# description: Snapshot and tracing setting
# flags: instance
[ ! -f snapshot ] && exit_unsupported
echo "Set tracing off"
echo 0 > tracing_on
echo "Allocate and take a snapshot"
echo 1 > snapshot
# Since trace buffer is empty, snapshot is also empty, but allocated
grep -q "Snapshot is allocated" snapshot
echo "Ensure keep tracing off"
test `cat tracing_on` -eq 0
echo "Set tracing on"
echo 1 > tracing_on
echo "Take a snapshot again"
echo 1 > snapshot
echo "Ensure keep tracing on"
test `cat tracing_on` -eq 1
exit 0
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