MySQL aria error

 This MariaDB log shows that the server failed to start due to a corrupted InnoDB data file, specifically involving a missing MLOG_CHECKPOINT. Let’s walk through what’s happening and how you can attempt recovery step-by-step.

---

🔍 What’s Happening?

Key Log Line:

[ERROR] InnoDB: Missing MLOG_CHECKPOINT at 50981968 between the checkpoint 50981968 and the end 50981959.

This means the InnoDB redo log is corrupted — it’s expecting a checkpoint that either doesn’t exist or is unreadable, which prevents InnoDB from initializing.

---

🛠️ Fix Step-by-Step

✅ 1. Backup First!

Before trying anything else:

• Backup the entire MariaDB data directory (default on Windows is usually in C:\Program Files\MariaDB xx\data).

• Also backup ib_logfile0, ib_logfile1, and ibdata1.

🛑 2. Try Forcing InnoDB Recovery

Edit your my.ini (or my.cnf) file and add the following under the [mysqld] section:

[mysqld]
innodb_force_recovery = 1

Try restarting the MariaDB service. If it still fails, increment the value:

innodb_force_recovery = 2

You can go up to 6, but higher values increase the risk of data loss — use only as needed to dump your data.

---

📤 3. Dump Your Databases

If the server starts:

• Use mysqldump or phpMyAdmin to export your data to .sql files.

mysqldump -u root -p --all-databases > alldb_backup.sql

---

♻️ 4. Clean Reinstall (if needed)

Once data is backed up:

• Stop MariaDB.

• Delete (or move) the ibdata1, ib_logfile0, ib_logfile1, and possibly the whole data folder.

• Start MariaDB (it will recreate clean InnoDB files).

• Re-import your .sql backup.

---

⚠️ Additional Note:

This kind of error often results from:

• Sudden shutdown (e.g., power failure)

• Disk full

• Disk corruption

So once recovered, you may want to:

• Enable automatic backups

• Monitor disk health

• Gracefully shut down MariaDB before restarting or turning off the server

---

Would you like help writing a my.ini config with the recovery mode or instructions to auto-dump once it starts? Let me know — we can get through this! 💪