Why am I Receiving 'Error writing file... (Errcode: 28)' in MySQL?

Troubleshooting "MySQL/Writing file error (Errcode 28)"

Encountering the error "Error writing file '/tmp/MY1fnqpm' (Errcode: 28)..." in the context of a MySQL database operation raises concerns about potential issues with file storage on your server.

To investigate the root cause, utilize the perror command. Executing perror 28 will provide an explanation for the error code:

$ perror 28
OS error code  28:  No space left on device

Based on this output, it is likely that your file system has reached its storage capacity. The error message explicitly states, "No space left on device," indicating that there is insufficient disk space to complete the file operation attempted by MySQL.

To resolve this issue, you must free up disk space on your server. This can be achieved by removing unnecessary files, optimizing database tables, or resizing partitions to allocate more space to the file system. Once you have freed up sufficient space, restart your MySQL service to ensure it recognizes the updated file system capacity.

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