Ceph » rbd

Bug #59728

Updated by Christopher Hoffman 10 months ago

Initially just an integration test for https://tracker.ceph.com/issues/59393.    Might be expanded in the future to vary injected latency, take measurements and assert on results according to the model. 


 Script to apply latency to NIC+destination IP 

 NIC=enp1s0 

 function apply() { 
   tc qdisc add dev ${NIC}    root handle 1: prio priomap 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0  
   tc qdisc add dev ${NIC} parent 1:2 handle 20: netem delay 0ms 
   tc filter add dev ${NIC} parent 1:0 protocol ip u32 match ip src `hostname -I` flowid 1:2 
   tc qdisc add dev ${NIC} parent 1:1 handle 10: netem delay 151ms 

   #NODES should be IPs of remote cluster you want to 
   #inject latency to. Include IPs for Mgr, Mon, Osd, etc 
   NODES=( 8.8.8.8 184.50.33.11 ) 
   for i in ${NODES[@]} 
   do 
     tc filter add dev ${NIC} parent 1:0 protocol ip prio 1 u32 match ip dst ${i} flowid 1:1 
   done 
 } 

 function cleanup() { 
   tc qdisc del dev ${NIC} root 
 } 

 cleanup 
 apply

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