Bug #43515 There is no way to use user_comment option from backup_history log.
Submitted: 9 Mar 2009 22:18 Modified: 5 Oct 2010 7:42
Reporter: Hema Sridharan Email Updates:
Status: Unsupported Impact on me:
None 
Category:MySQL Server: Backup Severity:S3 (Non-critical)
Version:6.0 bzr OS:Linux
Assigned to: Chuck Bell CPU Architecture:Any

File: Maximum allowed size is 50MB.
Description:
Privacy:

If the data you need to attach is more than 50MB, you should create a compressed archive of the data, split it to 50MB chunks, and upload each of them as a separate attachment.

To split a large file: