Backup to CIFS repo fails. The data area passed to a system call is too small. (4043107)

Backup fail. Error thrown.

Error: 2258 - [cifs_cant_mkdir] CIFS can't create the directory cifs:1:<domain>;<account>@<full path including temp dir fro var file> (The data area passed to a system call is too small.)

Rarely effects more than one VM.

Delete or rename existing folder. 

Steps:

1.- Please go to the repository where your affected VMs are located and in the primary folder where your global manifest is, you should be able to see folders, one for each virtual machine.

2.- Please find the folder of the affected VMs and rename them, for example put the prefix ‘old-‘ before them, and then let the job run. This way the job will recreate the whole tree of directories since most likely it is the parent that is bad.

3.- Next FULL backup run will create necessary folder.

There is a possibility that you can recover savepoints in the bad directory.