<p>Yes, if you forge a block in a slot but the node switches to a different fork before your block is propagated, your node with increment the metric tracking that it forged but didn't adopt it.</p>

CC BY-SA 4.0
2021-10-02T08:39:37.963Z
OK it sounds a bit like an "Uncle" block in Ethereum yes? AFAIK in Ethereum these get acknowledged in the next block but with lesser rewards, I guess it would make the chain harder to forge so makes sense. I wonder if Cardano uses these blocks? Or is the counter just for internal use to diagnose slow propagation issues maybe.
Tomachi
CC BY-SA 4.0
2021-10-01T15:24:38.690Z
2021-10-01T15:24:38.690Z
Samuel Leathers
<p>My pool missed a block but looking at the server logs everything was fine at this moment.</p>
<p>Here are the Cardano logs :</p>
<pre><code>{&quot;thread&quot;:&quot;1734&quot;,&quot;loc&quot;:null,&quot;data&quot; {&quot;kind&quot;:&quot;TraceStartLeadershipCheck&quot;,&quot;chainDensity&quot;:4.882958e-2,&quot;slot&quot;:40969729,&quot;delegMapSize&quot;:861059,&quot;utxoSize&quot;:3467585,&quot;credentials&quot;:&quot;Cardano&quot;},&quot;sev&quot;:&quot;Info&quot;,&quot;env&quot;:&quot;1.29.0:4c594&quot;,&quot;msg&quot;:&quot;&quot;,&quot;app&quot;:[],&quot;host&quot;:&quot;deploy-s&quot;,&quot;pid&quot;:&quot;80&quot;,&quot;ns&quot;:[&quot;cardano.node.LeadershipCheck&quot;],&quot;at&quot;:&quot;2021-09-25T02:13:40.00Z&quot;}
{&quot;thread&quot;:&quot;1734&quot;,&quot;loc&quot;:null,&quot;data&quot;:{&quot;val&quot;: {&quot;kind&quot;:&quot;TraceNodeNotLeader&quot;,&quot;slot&quot;:40969729},&quot;credentials&quot;:&quot;Cardano&quot;},&quot;sev&quot;:&quot;Info&quot;,&quot;env&quot;:&quot;1.29.0:4c594&quot;,&quot;msg&quot;:&quot;&quot;,&quot;app&quot;:[],&quot;host&quot;:&quot;deploy-s&quot;,&quot;pid&quot;:&quot;80&quot;,&quot;ns&quot;:[&quot;cardano.node.Forge&quot;],&quot;at&quot;:&quot;2021-09-25T02:13:40.00Z&quot;}
{&quot;thread&quot;:&quot;1734&quot;,&quot;loc&quot;:null,&quot;data&quot;:{&quot;kind&quot;:&quot;TraceStartLeadershipCheck&quot;,&quot;chainDensity&quot;:4.882958e-2,&quot;slot&quot;:40969730,&quot;delegMapSize&quot;:861059,&quot;utxoSize&quot;:3467585,&quot;credentials&quot;:&quot;Cardano&quot;},&quot;sev&quot;:&quot;Info&quot;,&quot;env&quot;:&quot;1.29.0:4c594&quot;,&quot;msg&quot;:&quot;&quot;,&quot;app&quot;:[],&quot;host&quot;:&quot;deploy-s&quot;,&quot;pid&quot;:&quot;80&quot;,&quot;ns&quot;:[&quot;cardano.node.LeadershipCheck&quot;],&quot;at&quot;:&quot;2021-09-25T02:13:41.00Z&quot;}
{&quot;thread&quot;:&quot;1734&quot;,&quot;loc&quot;:null,&quot;data&quot;:{&quot;val&quot;:{&quot;kind&quot;:&quot;TraceNodeIsLeader&quot;,&quot;slot&quot;:40969730},&quot;credentials&quot;:&quot;Cardano&quot;},&quot;sev&quot;:&quot;Info&quot;,&quot;env&quot;:&quot;1.29.0:4c594&quot;,&quot;msg&quot;:&quot;&quot;,&quot;app&quot;:[],&quot;host&quot;:&quot;deploy-s&quot;,&quot;pid&quot;:&quot;80&quot;,&quot;ns&quot;:[&quot;cardano.node.Forge&quot;],&quot;at&quot;:&quot;2021-09-25T02:13:41.00Z&quot;}
{&quot;thread&quot;:&quot;217610&quot;,&quot;loc&quot;:null,&quot;data&quot;:{&quot;kind&quot;:&quot;ChainSyncClientEvent.TraceDownloadedHeader&quot;,&quot;peer&quot;:{&quot;remote&quot;:{&quot;addr&quot;:&quot;10.45.129.61&quot;,&quot;port&quot;:&quot;6000&quot;},&quot;local&quot;:{&quot;addr&quot;:&quot;100.64.5.177&quot;,&quot;port&quot;:&quot;43899&quot;}},&quot;slot&quot;:40969728,&quot;block&quot;:&quot;3e41596123fca52a1328fdf70c6986be9b57e9b3a5284d0232632aae4cf5affb&quot;,&quot;blockNo&quot;:6287888},&quot;sev&quot;:&quot;Info&quot;,&quot;env&quot;:&quot;1.29.0:4c594&quot;,&quot;msg&quot;:&quot;&quot;,&quot;app&quot;:[],&quot;host&quot;:&quot;deploy-s&quot;,&quot;pid&quot;:&quot;80&quot;,&quot;ns&quot;:[&quot;cardano.node.ChainSyncClient&quot;],&quot;at&quot;:&quot;2021-09-25T02:13:41.11Z&quot;}
{&quot;thread&quot;:&quot;1736&quot;,&quot;loc&quot;:null,&quot;data&quot;:{&quot;peers&quot;:[{&quot;length&quot;:&quot;1&quot;,&quot;kind&quot;:&quot;FetchDecision results&quot;,&quot;peer&quot;:{&quot;remote&quot;:{&quot;addr&quot;:&quot;10.45.129.61&quot;,&quot;port&quot;:&quot;6000&quot;},&quot;local&quot;:{&quot;addr&quot;:&quot;100.64.5.177&quot;,&quot;port&quot;:&quot;43899&quot;}}}],&quot;kind&quot;:&quot;PeersFetch&quot;},&quot;sev&quot;:&quot;Info&quot;,&quot;env&quot;:&quot;1.29.0:4c594&quot;,&quot;msg&quot;:&quot;&quot;,&quot;app&quot;:[],&quot;host&quot;:&quot;deploy-s&quot;,&quot;pid&quot;:&quot;80&quot;,&quot;ns&quot;:[&quot;cardano.node.BlockFetchDecision&quot;],&quot;at&quot;:&quot;2021-09-25T02:13:41.14Z&quot;}
{&quot;thread&quot;:&quot;1736&quot;,&quot;loc&quot;:null,&quot;data&quot;:{&quot;kind&quot;:&quot;AddedFetchRequest&quot;,&quot;peer&quot;:{&quot;remote&quot;:{&quot;addr&quot;:&quot;10.45.129.61&quot;,&quot;port&quot;:&quot;6000&quot;},&quot;local&quot;:{&quot;addr&quot;:&quot;100.64.5.177&quot;,&quot;port&quot;:&quot;43899&quot;}}},&quot;sev&quot;:&quot;Info&quot;,&quot;env&quot;:&quot;1.29.0:4c594&quot;,&quot;msg&quot;:&quot;&quot;,&quot;app&quot;:[],&quot;host&quot;:&quot;deploy-s&quot;,&quot;pid&quot;:&quot;80&quot;,&quot;ns&quot;:[&quot;cardano.node.BlockFetchClient&quot;],&quot;at&quot;:&quot;2021-09-25T02:13:41.14Z&quot;}
{&quot;thread&quot;:&quot;217608&quot;,&quot;loc&quot;:null,&quot;data&quot;:{&quot;kind&quot;:&quot;AcknowledgedFetchRequest&quot;,&quot;peer&quot;:{&quot;remote&quot;:{&quot;addr&quot;:&quot;10.45.129.61&quot;,&quot;port&quot;:&quot;6000&quot;},&quot;local&quot;:{&quot;addr&quot;:&quot;100.64.5.177&quot;,&quot;port&quot;:&quot;43899&quot;}}},&quot;sev&quot;:&quot;Info&quot;,&quot;env&quot;:&quot;1.29.0:4c594&quot;,&quot;msg&quot;:&quot;&quot;,&quot;app&quot;:[],&quot;host&quot;:&quot;deploy-s&quot;,&quot;pid&quot;:&quot;80&quot;,&quot;ns&quot;:[&quot;cardano.node.BlockFetchClient&quot;],&quot;at&quot;:&quot;2021-09-25T02:13:41.16Z&quot;}
{&quot;thread&quot;:&quot;217608&quot;,&quot;loc&quot;:null,&quot;data&quot;:{&quot;length&quot;:1,&quot;kind&quot;:&quot;SendFetchRequest&quot;,&quot;head&quot;:&quot;3e41596123fca52a1328fdf70c6986be9b57e9b3a5284d0232632aae4cf5affb&quot;,&quot;peer&quot;:{&quot;remote&quot;:{&quot;addr&quot;:&quot;10.45.129.61&quot;,&quot;port&quot;:&quot;6000&quot;},&quot;local&quot;:{&quot;addr&quot;:&quot;100.64.5.177&quot;,&quot;port&quot;:&quot;43899&quot;}}},&quot;sev&quot;:&quot;Info&quot;,&quot;env&quot;:&quot;1.29.0:4c594&quot;,&quot;msg&quot;:&quot;&quot;,&quot;app&quot;:[],&quot;host&quot;:&quot;deploy-s&quot;,&quot;pid&quot;:&quot;80&quot;,&quot;ns&quot;:[&quot;cardano.node.BlockFetchClient&quot;],&quot;at&quot;:&quot;2021-09-25T02:13:41.16Z&quot;}
{&quot;thread&quot;:&quot;217607&quot;,&quot;loc&quot;:null,&quot;data&quot;:{&quot;kind&quot;:&quot;StartedFetchBatch&quot;,&quot;peer&quot;:{&quot;remote&quot;:{&quot;addr&quot;:&quot;10.45.129.61&quot;,&quot;port&quot;:&quot;6000&quot;},&quot;local&quot;:{&quot;addr&quot;:&quot;100.64.5.177&quot;,&quot;port&quot;:&quot;43899&quot;}}},&quot;sev&quot;:&quot;Info&quot;,&quot;env&quot;:&quot;1.29.0:4c594&quot;,&quot;msg&quot;:&quot;&quot;,&quot;app&quot;:[],&quot;host&quot;:&quot;deploy-s&quot;,&quot;pid&quot;:&quot;80&quot;,&quot;ns&quot;:[&quot;cardano.node.BlockFetchClient&quot;],&quot;at&quot;:&quot;2021-09-25T02:13:41.22Z&quot;}
{&quot;thread&quot;:&quot;1734&quot;,&quot;loc&quot;:null,&quot;data&quot;:{&quot;val&quot;:{&quot;kind&quot;:&quot;TraceForgedBlock&quot;,&quot;blockPrev&quot;:&quot;78de58439fc25a623ca44b8b7945385a23a727dc81a562f8aea54b3fa8dce4e5&quot;,&quot;slot&quot;:40969730,&quot;block&quot;:&quot;e16eb1d6ff408c4ada4f9f2fbdf554f7821ccd8d6b4a302c93aab8c3be0b22ff&quot;,&quot;blockNo&quot;:6287888},&quot;credentials&quot;:&quot;Cardano&quot;},&quot;sev&quot;:&quot;Info&quot;,&quot;env&quot;:&quot;1.29.0:4c594&quot;,&quot;msg&quot;:&quot;&quot;,&quot;app&quot;:[],&quot;host&quot;:&quot;deploy-s&quot;,&quot;pid&quot;:&quot;80&quot;,&quot;ns&quot;:[&quot;cardano.node.Forge&quot;],&quot;at&quot;:&quot;2021-09-25T02:13:41.29Z&quot;}
{&quot;thread&quot;:&quot;217607&quot;,&quot;loc&quot;:null,&quot;data&quot;:{&quot;kind&quot;:&quot;CompletedBlockFetch&quot;,&quot;peer&quot;:{&quot;remote&quot;:{&quot;addr&quot;:&quot;10.45.129.61&quot;,&quot;port&quot;:&quot;6000&quot;},&quot;local&quot;:{&quot;addr&quot;:&quot;100.64.5.177&quot;,&quot;port&quot;:&quot;43899&quot;}},&quot;block&quot;:&quot;3e41596123fca52a1328fdf70c6986be9b57e9b3a5284d0232632aae4cf5affb&quot;},&quot;sev&quot;:&quot;Info&quot;,&quot;env&quot;:&quot;1.29.0:4c594&quot;,&quot;msg&quot;:&quot;&quot;,&quot;app&quot;:[],&quot;host&quot;:&quot;deploy-s&quot;,&quot;pid&quot;:&quot;80&quot;,&quot;ns&quot;:[&quot;cardano.node.BlockFetchClient&quot;],&quot;at&quot;:&quot;2021-09-25T02:13:41.32Z&quot;}
{&quot;thread&quot;:&quot;217607&quot;,&quot;loc&quot;:null,&quot;data&quot;:{&quot;kind&quot;:&quot;CompletedFetchBatch&quot;,&quot;peer&quot;:{&quot;remote&quot;:{&quot;addr&quot;:&quot;10.45.129.61&quot;,&quot;port&quot;:&quot;6000&quot;},&quot;local&quot;:{&quot;addr&quot;:&quot;100.64.5.177&quot;,&quot;port&quot;:&quot;43899&quot;}}},&quot;sev&quot;:&quot;Info&quot;,&quot;env&quot;:&quot;1.29.0:4c594&quot;,&quot;msg&quot;:&quot;&quot;,&quot;app&quot;:[],&quot;host&quot;:&quot;deploy-s&quot;,&quot;pid&quot;:&quot;80&quot;,&quot;ns&quot;:[&quot;cardano.node.BlockFetchClient&quot;],&quot;at&quot;:&quot;2021-09-25T02:13:41.32Z&quot;}
{&quot;thread&quot;:&quot;1724&quot;,&quot;loc&quot;:null,&quot;data&quot;:{&quot;newtip&quot;:&quot;3e41596123fca52a1328fdf70c6986be9b57e9b3a5284d0232632aae4cf5affb@40969728&quot;,&quot;chainLengthDelta&quot;:1,&quot;kind&quot;:&quot;TraceAddBlockEvent.AddedToCurrentChain&quot;},&quot;sev&quot;:&quot;Notice&quot;,&quot;env&quot;:&quot;1.29.0:4c594&quot;,&quot;msg&quot;:&quot;&quot;,&quot;app&quot;:[],&quot;host&quot;:&quot;deploy-s&quot;,&quot;pid&quot;:&quot;80&quot;,&quot;ns&quot;:[&quot;cardano.node.ChainDB&quot;],&quot;at&quot;:&quot;2021-09-25T02:13:41.49Z&quot;}
{&quot;thread&quot;:&quot;217591&quot;,&quot;loc&quot;:null,&quot;data&quot;:{&quot;kind&quot;:&quot;ChainSyncServerEvent.TraceChainSyncServerReadBlocked.AddBlock&quot;,&quot;slot&quot;:40969728,&quot;block&quot;:&quot;3e41596123fca52a1328fdf70c6986be9b57e9b3a5284d0232632aae4cf5affb&quot;,&quot;blockNo&quot;:6287888},&quot;sev&quot;:&quot;Info&quot;,&quot;env&quot;:&quot;1.29.0:4c594&quot;,&quot;msg&quot;:&quot;&quot;,&quot;app&quot;:[],&quot;host&quot;:&quot;deploy-s&quot;,&quot;pid&quot;:&quot;80&quot;,&quot;ns&quot;:[&quot;cardano.node.ChainSyncHeaderServer&quot;],&quot;at&quot;:&quot;2021-09-25T02:13:41.49Z&quot;}
{&quot;thread&quot;:&quot;217591&quot;,&quot;loc&quot;:null,&quot;data&quot;:{&quot;point&quot;:{&quot;kind&quot;:&quot;BlockPoint&quot;,&quot;headerHash&quot;:&quot;3e41596123fca52a1328fdf70c6986be9b57e9b3a5284d0232632aae4cf5affb&quot;,&quot;slot&quot;:40969728},&quot;kind&quot;:&quot;ChainSyncServerEvent.TraceChainSyncRollForward&quot;},&quot;sev&quot;:&quot;Info&quot;,&quot;env&quot;:&quot;1.29.0:4c594&quot;,&quot;msg&quot;:&quot;&quot;,&quot;app&quot;:[],&quot;host&quot;:&quot;deploy-s&quot;,&quot;pid&quot;:&quot;80&quot;,&quot;ns&quot;:[&quot;cardano.node.ChainSyncHeaderServer&quot;],&quot;at&quot;:&quot;2021-09-25T02:13:41.49Z&quot;}
{&quot;thread&quot;:&quot;1724&quot;,&quot;loc&quot;:null,&quot;data&quot;:{&quot;kind&quot;:&quot;TraceAddBlockEvent.TrySwitchToAFork&quot;,&quot;block&quot;:{&quot;kind&quot;:&quot;Point&quot;,&quot;hash&quot;:&quot;e16eb1d6ff408c4ada4f9f2fbdf554f7821ccd8d6b4a302c93aab8c3be0b22ff&quot;,&quot;slot&quot;:40969730}},&quot;sev&quot;:&quot;Info&quot;,&quot;env&quot;:&quot;1.29.0:4c594&quot;,&quot;msg&quot;:&quot;&quot;,&quot;app&quot;:[],&quot;host&quot;:&quot;deploy-s&quot;,&quot;pid&quot;:&quot;80&quot;,&quot;ns&quot;:[&quot;cardano.node.ChainDB&quot;],&quot;at&quot;:&quot;2021-09-25T02:13:41.49Z&quot;}
{&quot;thread&quot;:&quot;1882&quot;,&quot;loc&quot;:null,&quot;data&quot;:{&quot;kind&quot;:&quot;ChainSyncServerEvent.TraceChainSyncServerReadBlocked.AddBlock&quot;,&quot;slot&quot;:40969728,&quot;block&quot;:&quot;3e41596123fca52a1328fdf70c6986be9b57e9b3a5284d0232632aae4cf5affb&quot;,&quot;blockNo&quot;:6287888},&quot;sev&quot;:&quot;Info&quot;,&quot;env&quot;:&quot;1.29.0:4c594&quot;,&quot;msg&quot;:&quot;&quot;,&quot;app&quot;:[],&quot;host&quot;:&quot;deploy-s&quot;,&quot;pid&quot;:&quot;80&quot;,&quot;ns&quot;:[&quot;cardano.node.ChainSyncHeaderServer&quot;],&quot;at&quot;:&quot;2021-09-25T02:13:41.49Z&quot;}
{&quot;thread&quot;:&quot;1882&quot;,&quot;loc&quot;:null,&quot;data&quot;:{&quot;point&quot;:{&quot;kind&quot;:&quot;BlockPoint&quot;,&quot;headerHash&quot;:&quot;3e41596123fca52a1328fdf70c6986be9b57e9b3a5284d0232632aae4cf5affb&quot;,&quot;slot&quot;:40969728},&quot;kind&quot;:&quot;ChainSyncServerEvent.TraceChainSyncRollForward&quot;},&quot;sev&quot;:&quot;Info&quot;,&quot;env&quot;:&quot;1.29.0:4c594&quot;,&quot;msg&quot;:&quot;&quot;,&quot;app&quot;:[],&quot;host&quot;:&quot;deploy-s&quot;,&quot;pid&quot;:&quot;80&quot;,&quot;ns&quot;:[&quot;cardano.node.ChainSyncHeaderServer&quot;],&quot;at&quot;:&quot;2021-09-25T02:13:41.49Z&quot;}
{&quot;thread&quot;:&quot;1734&quot;,&quot;loc&quot;:null,&quot;data&quot;:{&quot;val&quot;:{&quot;kind&quot;:&quot;TraceDidntAdoptBlock&quot;,&quot;slot&quot;:40969730},&quot;credentials&quot;:&quot;Cardano&quot;},&quot;sev&quot;:&quot;Error&quot;,&quot;env&quot;:&quot;1.29.0:4c594&quot;,&quot;msg&quot;:&quot;&quot;,&quot;app&quot;:[],&quot;host&quot;:&quot;deploy-s&quot;,&quot;pid&quot;:&quot;80&quot;,&quot;ns&quot;:[&quot;cardano.node.Forge&quot;],&quot;at&quot;:&quot;2021-09-25T02:13:41.51Z&quot;}
{&quot;thread&quot;:&quot;1732&quot;,&quot;loc&quot;:null,&quot;data&quot;:{&quot;txs&quot;:[{&quot;txid&quot;:&quot;txid: TxId {_unTxId = SafeHash \&quot;b1733a284ed3d44aef1db34bbafee20f0882a2478bc3b694c67fcd7dacb7258d\&quot;}&quot;},{&quot;txid&quot;:&quot;txid: TxId {_unTxId = SafeHash \&quot;f8c92325873b728b22655f91b9c330d1f8e69c7632d444e291c3955d50bc4f20\&quot;}&quot;},{&quot;txid&quot;:&quot;txid: TxId {_unTxId = SafeHash \&quot;5600ecfce06658369f4ad4fa21c1f841b40a8e799116734e7bae81b4fd5c81e3\&quot;}&quot;},{&quot;txid&quot;:&quot;txid: TxId {_unTxId = SafeHash \&quot;08cf32b2b8cb9b54f6894b784997a84a98db44783d60322d618f6b38be798e69\&quot;}&quot;},{&quot;txid&quot;:&quot;txid: TxId {_unTxId = SafeHash \&quot;fafb77fe479b34041e38881639fd92a84d4910867ac9f10b792058214d1708e7\&quot;}&quot;}],&quot;mempoolSize&quot;:{&quot;numTxs&quot;:1,&quot;bytes&quot;:1495},&quot;kind&quot;:&quot;TraceMempoolRemoveTxs&quot;},&quot;sev&quot;:&quot;Info&quot;,&quot;env&quot;:&quot;1.29.0:4c594&quot;,&quot;msg&quot;:&quot;&quot;,&quot;app&quot;:[],&quot;host&quot;:&quot;deploy-s&quot;,&quot;pid&quot;:&quot;80&quot;,&quot;ns&quot;:[&quot;cardano.node.Mempool&quot;],&quot;at&quot;:&quot;2021-09-25T02:13:41.79Z&quot;}
{&quot;thread&quot;:&quot;1734&quot;,&quot;loc&quot;:null,&quot;data&quot;:{&quot;kind&quot;:&quot;TraceStartLeadershipCheck&quot;,&quot;chainDensity&quot;:4.885721e-2,&quot;slot&quot;:40969731,&quot;delegMapSize&quot;:861059,&quot;utxoSize&quot;:3467587,&quot;credentials&quot;:&quot;Cardano&quot;},&quot;sev&quot;:&quot;Info&quot;,&quot;env&quot;:&quot;1.29.0:4c594&quot;,&quot;msg&quot;:&quot;&quot;,&quot;app&quot;:[],&quot;host&quot;:&quot;deploy-s&quot;,&quot;pid&quot;:&quot;80&quot;,&quot;ns&quot;:[&quot;cardano.node.LeadershipCheck&quot;],&quot;at&quot;:&quot;2021-09-25T02:13:42.00Z&quot;}
</code></pre>
<p>I see that there is a &quot;TraceAddBlockEvent.TrySwitchToAFork&quot; event during my leader slot, is it the cause of my problem ? Can I do something to avoid that in the future ?</p>

CC BY-SA 4.0
2021-09-28T14:34:02.790Z
How do you see this skipping / missed? I see `40969729, 40969730, 40969731` is that the block serial? Seems legit. Maybe I don't know what slot is.
Tomachi
CC BY-SA 4.0
2021-09-29T07:43:00.640Z
@Tomachi I have this in the logs {"kind":"TraceDidntAdoptBlock","slot":40969730}
charles augu
<stake-pool><block-production><leaderlog>
Block missed despite no problem on servers
# Block missed despite no problem on servers

(Asked by: username_0 on 2021-09-28)

My pool missed a block but looking at the server logs everything was fine at this moment.
Here are the Cardano logs :
{"thread":"1734","loc":null,"data" {"kind":"TraceStartLeadershipCheck","chainDensity":4.882958e-2,"slot":40969729,"delegMapSize":861059,"utxoSize":3467585,"credentials":"Cardano"},"sev":"Info","env":"1.29.0:4c594","msg":"","app":[],"host":"deploy-s","pid":"80","ns":["cardano.node.LeadershipCheck"],"at":"2021-09-25T02:13:40.00Z"}
{"thread":"1734","loc":null,"data":{"val": {"kind":"TraceNodeNotLeader","slot":40969729},"credentials":"Cardano"},"sev":"Info","env":"1.29.0:4c594","msg":"","app":[],"host":"deploy-s","pid":"80","ns":["cardano.node.Forge"],"at":"2021-09-25T02:13:40.00Z"}
{"thread":"1734","loc":null,"data":{"kind":"TraceStartLeadershipCheck","chainDensity":4.882958e-2,"slot":40969730,"delegMapSize":861059,"utxoSize":3467585,"credentials":"Cardano"},"sev":"Info","env":"1.29.0:4c594","msg":"","app":[],"host":"deploy-s","pid":"80","ns":["cardano.node.LeadershipCheck"],"at":"2021-09-25T02:13:41.00Z"}
{"thread":"1734","loc":null,"data":{"val":{"kind":"TraceNodeIsLeader","slot":40969730},"credentials":"Cardano"},"sev":"Info","env":"1.29.0:4c594","msg":"","app":[],"host":"deploy-s","pid":"80","ns":["cardano.node.Forge"],"at":"2021-09-25T02:13:41.00Z"}
{"thread":"217610","loc":null,"data":{"kind":"ChainSyncClientEvent.TraceDownloadedHeader","peer":{"remote":{"addr":"10.45.129.61","port":"6000"},"local":{"addr":"100.64.5.177","port":"43899"}},"slot":40969728,"block":"3e41596123fca52a1328fdf70c6986be9b57e9b3a5284d0232632aae4cf5affb","blockNo":6287888},"sev":"Info","env":"1.29.0:4c594","msg":"","app":[],"host":"deploy-s","pid":"80","ns":["cardano.node.ChainSyncClient"],"at":"2021-09-25T02:13:41.11Z"}
{"thread":"1736","loc":null,"data":{"peers":[{"length":"1","kind":"FetchDecision results","peer":{"remote":{"addr":"10.45.129.61","port":"6000"},"local":{"addr":"100.64.5.177","port":"43899"}}}],"kind":"PeersFetch"},"sev":"Info","env":"1.29.0:4c594","msg":"","app":[],"host":"deploy-s","pid":"80","ns":["cardano.node.BlockFetchDecision"],"at":"2021-09-25T02:13:41.14Z"}
{"thread":"1736","loc":null,"data":{"kind":"AddedFetchRequest","peer":{"remote":{"addr":"10.45.129.61","port":"6000"},"local":{"addr":"100.64.5.177","port":"43899"}}},"sev":"Info","env":"1.29.0:4c594","msg":"","app":[],"host":"deploy-s","pid":"80","ns":["cardano.node.BlockFetchClient"],"at":"2021-09-25T02:13:41.14Z"}
{"thread":"217608","loc":null,"data":{"kind":"AcknowledgedFetchRequest","peer":{"remote":{"addr":"10.45.129.61","port":"6000"},"local":{"addr":"100.64.5.177","port":"43899"}}},"sev":"Info","env":"1.29.0:4c594","msg":"","app":[],"host":"deploy-s","pid":"80","ns":["cardano.node.BlockFetchClient"],"at":"2021-09-25T02:13:41.16Z"}
{"thread":"217608","loc":null,"data":{"length":1,"kind":"SendFetchRequest","head":"3e41596123fca52a1328fdf70c6986be9b57e9b3a5284d0232632aae4cf5affb","peer":{"remote":{"addr":"10.45.129.61","port":"6000"},"local":{"addr":"100.64.5.177","port":"43899"}}},"sev":"Info","env":"1.29.0:4c594","msg":"","app":[],"host":"deploy-s","pid":"80","ns":["cardano.node.BlockFetchClient"],"at":"2021-09-25T02:13:41.16Z"}
{"thread":"217607","loc":null,"data":{"kind":"StartedFetchBatch","peer":{"remote":{"addr":"10.45.129.61","port":"6000"},"local":{"addr":"100.64.5.177","port":"43899"}}},"sev":"Info","env":"1.29.0:4c594","msg":"","app":[],"host":"deploy-s","pid":"80","ns":["cardano.node.BlockFetchClient"],"at":"2021-09-25T02:13:41.22Z"}
{"thread":"1734","loc":null,"data":{"val":{"kind":"TraceForgedBlock","blockPrev":"78de58439fc25a623ca44b8b7945385a23a727dc81a562f8aea54b3fa8dce4e5","slot":40969730,"block":"e16eb1d6ff408c4ada4f9f2fbdf554f7821ccd8d6b4a302c93aab8c3be0b22ff","blockNo":6287888},"credentials":"Cardano"},"sev":"Info","env":"1.29.0:4c594","msg":"","app":[],"host":"deploy-s","pid":"80","ns":["cardano.node.Forge"],"at":"2021-09-25T02:13:41.29Z"}
{"thread":"217607","loc":null,"data":{"kind":"CompletedBlockFetch","peer":{"remote":{"addr":"10.45.129.61","port":"6000"},"local":{"addr":"100.64.5.177","port":"43899"}},"block":"3e41596123fca52a1328fdf70c6986be9b57e9b3a5284d0232632aae4cf5affb"},"sev":"Info","env":"1.29.0:4c594","msg":"","app":[],"host":"deploy-s","pid":"80","ns":["cardano.node.BlockFetchClient"],"at":"2021-09-25T02:13:41.32Z"}
{"thread":"217607","loc":null,"data":{"kind":"CompletedFetchBatch","peer":{"remote":{"addr":"10.45.129.61","port":"6000"},"local":{"addr":"100.64.5.177","port":"43899"}}},"sev":"Info","env":"1.29.0:4c594","msg":"","app":[],"host":"deploy-s","pid":"80","ns":["cardano.node.BlockFetchClient"],"at":"2021-09-25T02:13:41.32Z"}
{"thread":"1724","loc":null,"data":{"newtip":"3e41596123fca52a1328fdf70c6986be9b57e9b3a5284d0232632aae4cf5affb@40969728","chainLengthDelta":1,"kind":"TraceAddBlockEvent.AddedToCurrentChain"},"sev":"Notice","env":"1.29.0:4c594","msg":"","app":[],"host":"deploy-s","pid":"80","ns":["cardano.node.ChainDB"],"at":"2021-09-25T02:13:41.49Z"}
{"thread":"217591","loc":null,"data":{"kind":"ChainSyncServerEvent.TraceChainSyncServerReadBlocked.AddBlock","slot":40969728,"block":"3e41596123fca52a1328fdf70c6986be9b57e9b3a5284d0232632aae4cf5affb","blockNo":6287888},"sev":"Info","env":"1.29.0:4c594","msg":"","app":[],"host":"deploy-s","pid":"80","ns":["cardano.node.ChainSyncHeaderServer"],"at":"2021-09-25T02:13:41.49Z"}
{"thread":"217591","loc":null,"data":{"point":{"kind":"BlockPoint","headerHash":"3e41596123fca52a1328fdf70c6986be9b57e9b3a5284d0232632aae4cf5affb","slot":40969728},"kind":"ChainSyncServerEvent.TraceChainSyncRollForward"},"sev":"Info","env":"1.29.0:4c594","msg":"","app":[],"host":"deploy-s","pid":"80","ns":["cardano.node.ChainSyncHeaderServer"],"at":"2021-09-25T02:13:41.49Z"}
{"thread":"1724","loc":null,"data":{"kind":"TraceAddBlockEvent.TrySwitchToAFork","block":{"kind":"Point","hash":"e16eb1d6ff408c4ada4f9f2fbdf554f7821ccd8d6b4a302c93aab8c3be0b22ff","slot":40969730}},"sev":"Info","env":"1.29.0:4c594","msg":"","app":[],"host":"deploy-s","pid":"80","ns":["cardano.node.ChainDB"],"at":"2021-09-25T02:13:41.49Z"}
{"thread":"1882","loc":null,"data":{"kind":"ChainSyncServerEvent.TraceChainSyncServerReadBlocked.AddBlock","slot":40969728,"block":"3e41596123fca52a1328fdf70c6986be9b57e9b3a5284d0232632aae4cf5affb","blockNo":6287888},"sev":"Info","env":"1.29.0:4c594","msg":"","app":[],"host":"deploy-s","pid":"80","ns":["cardano.node.ChainSyncHeaderServer"],"at":"2021-09-25T02:13:41.49Z"}
{"thread":"1882","loc":null,"data":{"point":{"kind":"BlockPoint","headerHash":"3e41596123fca52a1328fdf70c6986be9b57e9b3a5284d0232632aae4cf5affb","slot":40969728},"kind":"ChainSyncServerEvent.TraceChainSyncRollForward"},"sev":"Info","env":"1.29.0:4c594","msg":"","app":[],"host":"deploy-s","pid":"80","ns":["cardano.node.ChainSyncHeaderServer"],"at":"2021-09-25T02:13:41.49Z"}
{"thread":"1734","loc":null,"data":{"val":{"kind":"TraceDidntAdoptBlock","slot":40969730},"credentials":"Cardano"},"sev":"Error","env":"1.29.0:4c594","msg":"","app":[],"host":"deploy-s","pid":"80","ns":["cardano.node.Forge"],"at":"2021-09-25T02:13:41.51Z"}
{"thread":"1732","loc":null,"data":{"txs":[{"txid":"txid: TxId {_unTxId = SafeHash \"b1733a284ed3d44aef1db34bbafee20f0882a2478bc3b694c67fcd7dacb7258d\"}"},{"txid":"txid: TxId {_unTxId = SafeHash \"f8c92325873b728b22655f91b9c330d1f8e69c7632d444e291c3955d50bc4f20\"}"},{"txid":"txid: TxId {_unTxId = SafeHash \"5600ecfce06658369f4ad4fa21c1f841b40a8e799116734e7bae81b4fd5c81e3\"}"},{"txid":"txid: TxId {_unTxId = SafeHash \"08cf32b2b8cb9b54f6894b784997a84a98db44783d60322d618f6b38be798e69\"}"},{"txid":"txid: TxId {_unTxId = SafeHash \"fafb77fe479b34041e38881639fd92a84d4910867ac9f10b792058214d1708e7\"}"}],"mempoolSize":{"numTxs":1,"bytes":1495},"kind":"TraceMempoolRemoveTxs"},"sev":"Info","env":"1.29.0:4c594","msg":"","app":[],"host":"deploy-s","pid":"80","ns":["cardano.node.Mempool"],"at":"2021-09-25T02:13:41.79Z"}
{"thread":"1734","loc":null,"data":{"kind":"TraceStartLeadershipCheck","chainDensity":4.885721e-2,"slot":40969731,"delegMapSize":861059,"utxoSize":3467587,"credentials":"Cardano"},"sev":"Info","env":"1.29.0:4c594","msg":"","app":[],"host":"deploy-s","pid":"80","ns":["cardano.node.LeadershipCheck"],"at":"2021-09-25T02:13:42.00Z"}

I see that there is a "TraceAddBlockEvent.TrySwitchToAFork" event during my leader slot, is it the cause of my problem ? Can I do something to avoid that in the future ?

**Tags:** stake-pool, block-production, leaderlog
> **Comments:**
> **username_1**: How do you see this skipping / missed? I see `40969729, 40969730, 40969731` is that the block serial? Seems legit. Maybe I don't know what slot is.  
> **username_0**: @Tomachi I have this in the logs {"kind":"TraceDidntAdoptBlock","slot":40969730}  

---

## 1 answers

### Answer by username_2 on 2021-10-01. Score: 0 | Accepted answer

Yes, if you forge a block in a slot but the node switches to a different fork before your block is propagated, your node with increment the metric tracking that it forged but didn't adopt it.

> **Comments:**
> **username_1**: OK it sounds a bit like an "Uncle" block in Ethereum yes? AFAIK in Ethereum these get acknowledged in the next block but with lesser rewards, I guess it would make the chain harder to forge so makes sense. I wonder if Cardano uses these blocks? Or is the counter just for internal use to diagnose slow propagation issues maybe.  

---

