mailcow-dockerized-docs/docs/troubleshooting/debug-mysql_aria.en.md

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## MariaDB: Aria recovery after crash
If your server crashed and MariaDB logs an error similar to `[ERROR] mysqld: Aria recovery failed. Please run aria_chk -r on all Aria tables (*.MAI) and delete all aria_log.######## files` you may want to try the following to recover the database to a healthy state:
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Start the stack and wait until mysql-mailcow begins to report a restarting state. Check by running `docker compose ps`.
Now run the following commands:
```
# Stop the stack, don't run "down"
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docker compose stop
# Run a bash in the stopped container as user mysql
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docker compose run --rm --entrypoint '/bin/sh -c "gosu mysql bash"' mysql-mailcow
# cd to the SQL data directory
cd /var/lib/mysql
# Run aria_chk
aria_chk --check --force */*.MAI
# Delete aria log files
rm aria_log.*
```
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Now run `docker compose down` followed by `docker compose up -d`.