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This repository was archived by the owner on Apr 26, 2024. It is now read-only.
synapse_port_db generates an unusable database #9979
Description
After running synapse_port_db following the instructions, attempting to start synapse pointing to the generated database results in an error along the lines of:
2021-05-13 17:48:23,671 - synapse.storage.util.sequence - 173 - WARNING - main - Postgres sequence event_auth_chain_id is behind table event_auth_chains: 224 < 225
2021-05-13 17:48:23,671 - twisted - 258 - ERROR - main - *******************************************************************************
2021-05-13 17:48:23,671 - twisted - 258 - ERROR - main -
2021-05-13 17:48:23,671 - twisted - 258 - ERROR - main - Postgres sequence 'event_auth_chain_id' is inconsistent with associated
2021-05-13 17:48:23,672 - twisted - 258 - ERROR - main - table 'event_auth_chains'. This can happen if Synapse has been downgraded and
2021-05-13 17:48:23,672 - twisted - 258 - ERROR - main - then upgraded again, or due to a bad migration.
2021-05-13 17:48:23,672 - twisted - 258 - ERROR - main -
2021-05-13 17:48:23,672 - twisted - 258 - ERROR - main - To fix this error, shut down Synapse (including any and all workers)
2021-05-13 17:48:23,672 - twisted - 258 - ERROR - main - and run the following SQL:
2021-05-13 17:48:23,672 - twisted - 258 - ERROR - main -
2021-05-13 17:48:23,672 - twisted - 258 - ERROR - main - SELECT setval('event_auth_chain_id', (
2021-05-13 17:48:23,672 - twisted - 258 - ERROR - main - SELECT GREATEST(MAX(chain_id), 0) FROM event_auth_chains
2021-05-13 17:48:23,673 - twisted - 258 - ERROR - main - ));
2021-05-13 17:48:23,673 - twisted - 258 - ERROR - main -
2021-05-13 17:48:23,673 - twisted - 258 - ERROR - main - See docs/postgres.md for more information.
2021-05-13 17:48:23,673 - twisted - 258 - ERROR - main -
2021-05-13 17:48:23,673 - twisted - 258 - ERROR - main - *******************************************************************************
(attempting to re-run synapse_port_db produces a similar error)
Activity
richvdh commentedon May 13, 2021
It looks like this is still #9382. #9449 attempted to fix it, but got an off-by-one-error.
vulet commentedon May 20, 2021
I just ran into this issue.
curr_chain_id + 1in #9991 resolved it, in addition to running:Thanks.
vulet commentedon May 20, 2021
It actually seems like a lot of my messages are delayed now. I didn't restart the whole migration process with the change, instead re-ran the script. I suppose I might just restart the whole process.
edit: Everything worked this time around. I guess the database was corrupted, or the SQL statement borked things.
Fix off-by-one-error in synapse_port_db (#9991)