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Recover plugin to automate recovery in CLN #6853

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merged 6 commits into from Feb 16, 2024
Merged

Recover plugin to automate recovery in CLN #6853

merged 6 commits into from Feb 16, 2024

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adi2011
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@adi2011 adi2011 commented Nov 8, 2023 •
edited

This would help users detect that they've lost some data and would automatically try to recover from SCB or peer storage.
Read #6544 for more!

adi2011
adi2011 commented Nov 16, 2023
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rustyrussell
rustyrussell reviewed Nov 17, 2023
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I like the general approach, but we also need to have an idea when gossipd thinks it is synced (probably in getinfo). If we are on regtest, I would simply consider us always up-to-date, but for mainnet you could use some heuristic like "more than 1000 channels and the seeker is in state NORMAL" maybe?

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@adi2011 adi2011 marked this pull request as ready for review December 11, 2023 10:49
rustyrussell
rustyrussell reviewed Dec 13, 2023
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Looking good so far! Minor nitpicks...

doc/schemas/listpeerchannels.schema.json Outdated Show resolved Hide resolved
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@adi2011 adi2011 force-pushed the RecoverPlugin branch 3 times, most recently from 7e3a4b4 to b42e775 Compare January 16, 2024 14:12
@cdecker cdecker self-assigned this Jan 16, 2024
@cdecker cdecker added this to the v24.02 milestone Jan 16, 2024
@adi2011 adi2011 force-pushed the RecoverPlugin branch 7 times, most recently from da38b09 to 6cbf8f5 Compare January 22, 2024 18:16
rustyrussell
rustyrussell approved these changes Jan 24, 2024
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I like it, but test fails for some reason?

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tests/test_misc.py Outdated

# l2.daemon.wait_for_log(r'All outputs resolved.*')
wait_for(lambda: l2.rpc.listfunds()["channels"][0]["state"] == "ONCHAIN")
wait_for(lambda: l2.rpc.listfunds()["channels"][1]["state"] == "ONCHAIN")
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CI failing here: seems like l2 only has one channel?

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It passes locally, but fails here for some reason. I am trying to resolve it...

@adi2011 adi2011 force-pushed the RecoverPlugin branch 5 times, most recently from 52b73bf to ad35815 Compare February 1, 2024 07:53
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cdecker commented Feb 2, 2024

Hi @adi2011, I noticed that one of the failing test suites is the fuzz tester. That one has picked up some memory leak in a test binary that is unrelated to your PR. If you'd like to remove the fuzz testing from the PR CI runs, you can rebase on master.

See #7029 for more information :-)

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adi2011 commented Feb 2, 2024 •
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Hi @cdecker, I've rebased on master. But it'll throw error which is rectified in #7031.

@cdecker cdecker removed this from the v24.02 milestone Feb 13, 2024
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cdecker commented Feb 13, 2024

Remvoed milestone as this has a crash bug, and we need to move on with the release process. Happy to re-add it if fixed in the next RC.

@adi2011 adi2011 force-pushed the RecoverPlugin branch 13 times, most recently from da547bc to df36ca9 Compare February 16, 2024 04:28
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adi2011 commented Feb 16, 2024

The CI error is fixed here #7080

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cdecker commented Feb 16, 2024

Rebased on top of master and hopefully we can line it up for inclusion into v24.02 anyway.

@adi2011
peer_control: Add lost_state param inside listpeerchannels rpc, which…
65a058d 
…'d help us identify if we've fall behind or lost some state.
@adi2011
Plugins: Add recover plugin which'd identify if we've lost some state…
a746579 
… and try to recover the node by entering mode.
@adi2011
plugins/recover: Initialise process to detect lost state through list…
06d123d 
…peerchannels.
@adi2011
plugins/recover: entering_recovering_mode should connect to most conn…
53f45c1 
…ected nodes on the network and call emergency_recover immediately.
@adi2011
plugins/recover: Load gossmap, connect to old peers and fetch peer_st…
2f8ab6d 
…orage and then call restorefrompeer repeatedly.
@adi2011
tests/test_misc.py: Add test_recover_plugin to check if the funds are…
b296e3f 
… being recovered when we lose some state and enter recover mode.
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cdecker commented Feb 16, 2024

@adi2011 notice that if you force-push we have to run all the tests again, whereas if we just restart we can just rerun the failing cases. Let me take care of CI and this will be merged soon.

@cdecker cdecker merged commit cdb0001 into ElementsProject:master Feb 16, 2024
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adi2011 commented Feb 16, 2024

Finally!! 🎉🎉❤️

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