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Retry PG changes without re-running lpsolve when pool configuration and OSD tree don't change

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OSDs often change their /pg/history keys during rebalance, so monitor receives additional
transaction failures from etcd if it re-runs lpsolve which sometimes may even lead to monitor
being unable to apply PG changes at all until rebalance completes
This commit is contained in:
Vitaliy Filippov
2023-12-31 01:23:17 +03:00
parent 1edf86ed26
commit f757a35a8d
6 changed files with 210 additions and 155 deletions
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tests/test_failure_domain.sh
+1 -1
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@@ -15,7 +15,7 @@ $ETCDCTL put /vitastor/osd/stats/7 '{"host":"host4","size":1073741824,"time":"'$
$ETCDCTL put /vitastor/osd/stats/8 '{"host":"host4","size":1073741824,"time":"'$TIME'"}'
$ETCDCTL put /vitastor/config/pools '{"1":{"name":"testpool","scheme":"replicated","pg_size":2,"pg_minsize":1,"pg_count":4,"failure_domain":"rack"}}'
node mon/mon-main.js --etcd_url $ETCD_URL --etcd_prefix "/vitastor" &>./testdata/mon.log &
node mon/mon-main.js --etcd_address $ETCD_URL --etcd_prefix "/vitastor" >>./testdata/mon.log 2>&1 &
MON_PID=$!
sleep 2