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Host unusual disk write latency
warning

Description Disk latency is growing (write operations > 100ms)
Query for 2m 
>>>
	
				
					(
				
			
				
					
					
						rate
					
				
			
				
					(
				
			
				
					
				
			
				
					[1m]) / 
				
			
				
					
					
						rate
					
				
			
				
					(
				
			
				
					
				
			
				
					[1m]) > 0.1 and 
				
			
				
					
					
						rate
					
				
			
				
					(
				
			
				
					
				
			
				
					[1m]) > 0)
Query Explanation

The rule computes the per‑second average write latency by dividing rate(node_disk_write_time_seconds_total[1m]) by rate(node_disk_writes_completed_total[1m]). It fires when this latency exceeds 0.1 s (100 ms) and there is at least one write operation (rate(node_disk_writes_completed_total[1m]) > 0).

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