jepsen: reconfigure nemesis + add db nemesis
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4fa2646a75
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db921cc05f
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@ -97,6 +97,8 @@ Results:
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- For now, no failures with clock-scramble nemesis + partition nemesis -> TODO long test run
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- Does not seem to fail with partition + layout reconfiguration nemesis (>100 runs)
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- Does not seem to fail with the clock scrambler + partition + layout reconfiguation nemesis (>10 runs), although theoretically it could
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TODO: make it fail!!!
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@ -27,7 +27,8 @@
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"cp" grgNemesis/scenario-cp
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"r" grgNemesis/scenario-r
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"pr" grgNemesis/scenario-pr
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"cpr" grgNemesis/scenario-cpr})
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"cpr" grgNemesis/scenario-cpr
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"dpr" grgNemesis/scenario-dpr})
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(def patches
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"A map of patch names to Garage builds"
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@ -59,15 +60,16 @@
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"Given an options map from the command line runner (e.g. :nodes, :ssh,
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:concurrency, ...), constructs a test map."
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[opts]
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(let [workload ((get workloads (:workload opts)) opts)
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scenario ((get scenari (:scenario opts)) opts)
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garage-version (get patches (:patch opts))]
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(let [garage-version (get patches (:patch opts))
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db (grg/db garage-version)
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workload ((get workloads (:workload opts)) opts)
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scenario ((get scenari (:scenario opts)) (assoc opts :db db))]
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(merge tests/noop-test
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opts
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{:pure-generators true
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:name (str "garage " (name (:workload opts)))
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:os debian/os
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:db (grg/db garage-version)
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:db db
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:client (:client workload)
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:generator (gen/phases
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(->>
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@ -82,7 +84,7 @@
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(gen/clients (:final-generator workload)))
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:nemesis (:nemesis scenario)
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:checker (checker/compose
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{:perf (checker/perf)
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{:perf (checker/perf (:perf scenario))
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:workload (:checker workload)})
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})))
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@ -119,6 +119,24 @@
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(c/exec :rm :-rf data-dir)
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(c/exec :rm :-rf meta-dir)))
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db/Pause
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(pause! [_ test node]
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(cu/grepkill! :stop binary))
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(resume! [_ test node]
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(cu/grepkill! :cont binary))
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db/Kill
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(kill! [_ test node]
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(cu/stop-daemon! binary pidfile))
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(start! [_ test node]
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(cu/start-daemon!
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{:logfile logfile
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:pidfile pidfile
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:chdir base-dir
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:env {:RUST_LOG "garage=debug,garage_api=trace"}}
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binary
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:server))
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db/LogFiles
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(log-files [_ test node]
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[logfile])))
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@ -4,6 +4,7 @@
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[core :as jepsen]
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[generator :as gen]
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[nemesis :as nemesis]]
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[jepsen.nemesis.combined :as combined]
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[jepsen.garage.daemon :as grg]
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[jepsen.control.util :as cu]))
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@ -11,21 +12,23 @@
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(defn configure-present!
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"Configure node to be active in new cluster layout"
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[test node]
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(info "configure-present!" node)
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(let [node-id (c/on node (c/exec grg/binary :node :id :-q))]
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(c/on
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(jepsen/primary test)
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(c/exec grg/binary :layout :assign (subs node-id 0 16) :-c :1G))))
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[test nodes]
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(info "configure-present!" nodes)
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(let [node-ids (c/on-many nodes (c/exec grg/binary :node :id :-q))
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node-id-strs (map (fn [[_ v]] (subs v 0 16)) node-ids)]
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(c/on
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(jepsen/primary test)
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(apply c/exec (concat [grg/binary :layout :assign :-c :1G] node-id-strs)))))
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(defn configure-absent!
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"Configure node to be active in new cluster layout"
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[test node]
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(info "configure-absent!" node)
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(let [node-id (c/on node (c/exec grg/binary :node :id :-q))]
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(c/on
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(jepsen/primary test)
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(c/exec grg/binary :layout :assign (subs node-id 0 16) :-g))))
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"Configure nodes to be active in new cluster layout"
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[test nodes]
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(info "configure-absent!" nodes)
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(let [node-ids (c/on-many nodes (c/exec grg/binary :node :id :-q))
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node-id-strs (map (fn [[_ v]] (subs v 0 16)) node-ids)]
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(c/on
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(jepsen/primary test)
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(apply c/exec (concat [grg/binary :layout :assign :-g] node-id-strs)))))
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(defn finalize-config!
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"Apply the proposed cluster layout"
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@ -53,14 +56,14 @@
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shuffle
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(split-at cnt))]
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(info "layout split: keep " keep-nodes ", remove " remove-nodes)
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(run! #(configure-present! test %) keep-nodes)
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(run! #(configure-absent! test %) remove-nodes)
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(configure-present! test keep-nodes)
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(configure-absent! test remove-nodes)
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(finalize-config! test)
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(assoc op :value keep-nodes))
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:stop
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(do
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(info "layout un-split: all nodes=" (:nodes test))
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(run! #(configure-present! test %) (:nodes test))
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(configure-present! test (:nodes test))
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(finalize-config! test)
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(assoc op :value (:nodes test)))))
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@ -73,70 +76,58 @@
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[op]
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(fn [_ _] {:type :info, :f op}))
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(defn scenario-c
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"Clock scramble scenario"
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[opts]
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{:generator (->>
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(nemesis-op :clock-scramble)
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(gen/stagger 5))
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:nemesis (nemesis/compose
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{{:clock-scramble :scramble} (nemesis/clock-scrambler 20.0)})})
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(defn scenario-cp
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"Clock scramble + partition scenario"
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[opts]
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{:generator (->>
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(gen/mix [(nemesis-op :clock-scramble)
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(nemesis-op :partition-stop)
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(nemesis-op :partition-start)])
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(gen/stagger 5))
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:final-generator (gen/once {:type :info, :f :partition-stop})
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:nemesis (nemesis/compose
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{{:clock-scramble :scramble} (nemesis/clock-scrambler 20.0)
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{:partition-start :start
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:partition-stop :stop} (nemesis/partition-random-halves)})})
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(defn scenario-r
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"Cluster reconfiguration scenario"
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(defn reconfiguration-package
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"Cluster reconfiguration nemesis package"
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[opts]
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{:generator (->>
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(gen/mix [(nemesis-op :reconfigure-start)
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(nemesis-op :reconfigure-stop)])
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(gen/stagger 5))
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(gen/stagger (:interval opts 5)))
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:final-generator {:type :info, :f :reconfigure-stop}
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:nemesis (nemesis/compose
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{{:reconfigure-start :start
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:reconfigure-stop :stop} (reconfigure-subset 3)})})
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:reconfigure-stop :stop} (reconfigure-subset 3)})
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:perf #{{:name "reconfigure"
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:start #{:reconfigure-start}
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:stop #{:reconfigur-stop}
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:color "#A197E9"}}})
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(defn scenario-c
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"Clock modifying scenario"
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[opts]
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(combined/clock-package {:db (:db opts), :interval 1, :faults #{:clock}}))
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(defn scenario-cp
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"Clock modifying + partition scenario"
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[opts]
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(combined/compose-packages
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[(combined/clock-package {:db (:db opts), :interval 1, :faults #{:clock}})
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(combined/partition-package {:db (:db opts), :interval 1, :faults #{:partition}})]))
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(defn scenario-r
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"Cluster reconfiguration scenario"
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[opts]
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(reconfiguration-package {:interval 1}))
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(defn scenario-pr
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"Partition + cluster reconfiguration scenario"
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[opts]
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{:generator (->>
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(gen/mix [(nemesis-op :partition-start)
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(nemesis-op :partition-stop)
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(nemesis-op :reconfigure-start)
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(nemesis-op :reconfigure-stop)])
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(gen/stagger 5))
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:final-generator (gen/once {:type :info, :f :partition-stop})
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:nemesis (nemesis/compose
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{{:partition-start :start
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:partition-stop :stop} (nemesis/partition-random-halves)
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{:reconfigure-start :start
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:reconfigure-stop :stop} (reconfigure-subset 3)})})
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(combined/compose-packages
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[(combined/partition-package {:db (:db opts), :interval 1, :faults #{:partition}})
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(reconfiguration-package {:interval 1})]))
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(defn scenario-cpr
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"Clock scramble + partition + cluster reconfiguration scenario"
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[opts]
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{:generator (->>
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(gen/mix [(nemesis-op :clock-scramble)
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(nemesis-op :partition-start)
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(nemesis-op :partition-stop)
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(nemesis-op :reconfigure-start)
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(nemesis-op :reconfigure-stop)])
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(gen/stagger 5))
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:final-generator (gen/once {:type :info, :f :partition-stop})
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:nemesis (nemesis/compose
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{{:clock-scramble :scramble} (nemesis/clock-scrambler 20.0)
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{:partition-start :start
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:partition-stop :stop} (nemesis/partition-random-halves)
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{:reconfigure-start :start
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:reconfigure-stop :stop} (reconfigure-subset 3)})})
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(combined/compose-packages
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[(combined/clock-package {:db (:db opts), :interval 1, :faults #{:clock}})
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(combined/partition-package {:db (:db opts), :interval 1, :faults #{:partition}})
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(reconfiguration-package {:interval 1})]))
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(defn scenario-dpr
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"Db + partition + cluster reconfiguration scenario"
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[opts]
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(combined/compose-packages
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[(combined/db-package {:db (:db opts), :interval 1, :faults #{:db :pause :kill}})
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(combined/partition-package {:db (:db opts), :interval 1, :faults #{:partition}})
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(reconfiguration-package {:interval 1})]))
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@ -30,21 +30,28 @@
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(assoc this :creds (grg/creds node)))
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(setup! [this test])
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(invoke! [this test op]
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(let [[k v] (:value op)]
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(case (:f op)
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:read
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(util/timeout
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10000
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(assoc op :type :fail, :error ::timeout)
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(let [value (s3/get (:creds this) k)]
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(assoc op :type :ok, :value (independent/tuple k value))))
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:write
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(util/timeout
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10000
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(assoc op :type :info, :error ::timeout)
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(do
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(s3/put (:creds this) k v)
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(assoc op :type :ok))))))
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(try+
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(let [[k v] (:value op)]
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(case (:f op)
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:read
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(util/timeout
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10000
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(assoc op :type :fail, :error ::timeout)
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(let [value (s3/get (:creds this) k)]
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(assoc op :type :ok, :value (independent/tuple k value))))
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:write
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(util/timeout
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10000
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(assoc op :type :info, :error ::timeout)
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(do
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(s3/put (:creds this) k v)
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(assoc op :type :ok)))))
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(catch (re-find #"Unavailable" (.getMessage %)) ex
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(assoc op :type :info, :error ::unavailable))
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(catch (re-find #"Broken pipe" (.getMessage %)) ex
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(assoc op :type :info, :error ::broken-pipe))
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(catch (re-find #"Connection refused" (.getMessage %)) ex
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(assoc op :type :info, :error ::connection-refused))))
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(teardown! [this test])
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(close! [this test]))
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@ -30,27 +30,34 @@
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(assoc this :creds (grg/creds node)))
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(setup! [this test])
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(invoke! [this test op]
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(let [[k v] (:value op)
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prefix (str "set" k "/")]
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(case (:f op)
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:add
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(util/timeout
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10000
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(assoc op :type :info, :error ::timeout)
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(do
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(s3/put (:creds this) (str prefix v) "present")
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(assoc op :type :ok)))
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:read
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(util/timeout
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10000
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(assoc op :type :fail, :error ::timeout)
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(do
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(let [items (s3/list (:creds this) prefix)]
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(let [items-stripped (map (fn [o]
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(assert (str/starts-with? o prefix))
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(str/replace-first o prefix "")) items)
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items-set (set (map parse-long items-stripped))]
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(assoc op :type :ok, :value (independent/tuple k items-set)))))))))
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(try+
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(let [[k v] (:value op)
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prefix (str "set" k "/")]
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(case (:f op)
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:add
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(util/timeout
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10000
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(assoc op :type :info, :error ::timeout)
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(do
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(s3/put (:creds this) (str prefix v) "present")
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(assoc op :type :ok)))
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:read
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(util/timeout
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10000
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(assoc op :type :fail, :error ::timeout)
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(do
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(let [items (s3/list (:creds this) prefix)]
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(let [items-stripped (map (fn [o]
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(assert (str/starts-with? o prefix))
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(str/replace-first o prefix "")) items)
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items-set (set (map parse-long items-stripped))]
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(assoc op :type :ok, :value (independent/tuple k items-set))))))))
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(catch (re-find #"Unavailable" (.getMessage %)) ex
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(assoc op :type :info, :error ::unavailable))
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(catch (re-find #"Broken pipe" (.getMessage %)) ex
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(assoc op :type :info, :error ::broken-pipe))
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(catch (re-find #"Connection refused" (.getMessage %)) ex
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(assoc op :type :info, :error ::connection-refused))))
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(teardown! [this test])
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(close! [this test]))
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