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stake-pool: Handle force destaked accounts #3152

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merged 1 commit into from
May 19, 2022

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Problem

During a cluster restart, it's possible for stake accounts to get force destaked. If a stake pool contains a force destaked validator stake account, many parts will stop working.

Solution

Provide two safeguards:

  • during update, if the validator stake account is usable by the pool and Initialized, assume that a destake happened, merge it into the reserve, and effectively remove that validator from the pool. It can always be re-added again if needed.
  • during stake increase, if the validator stake account is Initialized, something bad happened, so prevent the increase. This is in the case of a cronjob that isn't aware that a force destake happened, and tries to increase stake on the validator.

@joncinque joncinque merged commit c324f6c into solana-labs:master May 19, 2022
@joncinque joncinque deleted the sp-destake branch May 19, 2022 17:08
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