long getCapacity() throws IOException {
if (reserved > usage.getCapacity()) {
return 0;
}
return usage.getCapacity() - reserved;
}
long getAvailable() throws IOException {
long remaining = getCapacity() - getDfsUsed();
long available = usage.getAvailable();
if (remaining > available) {
remaining = available;
}
return (remaining > 0) ? remaining : 0;
}
String getMount() throws IOException {
return usage.getMount();
}