[google-cloud-sql-discuss] Cloud Sql Backup Error Blocking Cloud Sql

Hi,

I have a cloud-sql instance with an automated backup enabled, today just after the backup I received the following error appeared in operation :-

May 31, 2019, 5:57:24 AM

Delete backup

An unknown error occurred

Following that following code error appeared in the cloud-sql log ; -

2019-05-31 05:55:35.424 IST 2019-05-31T00:25:35.423588Z 17866 [ERROR] InnoDB: Write to file ./ibtmp1failed at offset 10801456873472, 1048576 bytes should have been written, only 0 were written. Operating system error number 28. Check that your OS and file system support files of this size. Check also that the disk is not full or a disk quot

After this cloud-sql became almost unresponsive to the queries  until I have to restart the instance. My question is  Automated Backup is the root cause of problem ? If yes, how shall I avoid it in future so that my business does not suffers . 

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