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+
+ template: bcache_cache_errors
+ on: disk.bcache_cache_read_races
+ class: Errors
+ type: System
+component: Disk
+ lookup: sum -1m unaligned absolute
+ units: errors
+ every: 1m
+ warn: $this > 0
+ delay: up 2m down 1h multiplier 1.5 max 2h
+ info: number of times data was read from the cache, \
+ the bucket was reused and invalidated in the last 10 minutes \
+ (when this occurs the data is reread from the backing device)
+ to: sysadmin
+
+ template: bcache_cache_dirty
+ on: disk.bcache_cache_alloc
+ class: Utilization
+ type: System
+component: Disk
+ calc: $dirty + $metadata + $undefined
+ units: %
+ every: 1m
+ warn: $this > ( ($status >= $WARNING ) ? ( 70 ) : ( 90 ) )
+ crit: $this > ( ($status == $CRITICAL) ? ( 90 ) : ( 95 ) )
+ delay: up 1m down 1h multiplier 1.5 max 2h
+ info: percentage of cache space used for dirty data and metadata \
+ (this usually means your SSD cache is too small)
+ to: sysadmin