mysqldump: Got errno 28 on write

Solution 1:

Error Message

Backup failed: mysqldump: Got errno 28 on write

Meaning

Insufficient disk space to store output.

Solution

Free up some disk space. You might want to track down the reason you're low on disk space too.

Source: https://sittinginoblivion.com/wiki/backup-failed-mysqldump-got-errno-28-write

Solution 2:

I got the same error but it turned out that there was no memory left to accommodate a new file. Removing unwanted files to free up the space for new (*.sql) file helped.

P.S: You can see your memory consumption by the command: df -h.