Exact meaning of FATAL?

Server
1

I have following errors with my file backup:

11.04.18 15:34    	Error opening file... "/backups/laptop/180411-0347/.hashes/D/Eigene Dokumente/Thunderbird Mails/pdbsenid.default/Mail/Local Folders/Archives.sbd/2015.mozmsgs/151213220617.SIM_cNp_YHv9veJQfUqNg5vJC7c1FXz4UhhilM3oKVW6yJrlev%252BjEIYxjmZZ5qJh7e%252BO%252B_X7oUHegGauinvd6Z1K_6Xccv%40webapp197.emsecure.net.wdseml". File name too long (code: 36)
11.04.18 15:34    	Storing file to "/backups/laptop/180411-0347/D/Eigene Dokumente/Thunderbird Mails/pdbsenid.default/Mail/Local Folders/Archives.sbd/2015.mozmsgs/151213220617.SIM_cNp_YHv9veJQfUqNg5vJC7c1FXz4UhhilM3oKVW6yJrlev%252BjEIYxjmZZ5qJh7e%252BO%252B_X7oUHegGauinvd6Z1K_6Xccv%40webapp197.emsecure.net.wdseml" failed
11.04.18 16:34     	FATAL: Backup failed because of disk problems (see previous messages)
11.04.18 16:34    	Backup failed

These are caused by my encrypting file system, which has a file name limit of 130 characters. Some file names are too long and are rejected by the file system of the disk. This happens with 6 files currently, all generated by Thunderbird.

I can live with some obscure Thunderbird files not being backed up.

But the file messages occur at 15:34, and the backup logs “FATAL: Backup failed” at 16:34, a full hour later. I have the impression that the backup continued despite of the previous error messages. But FATAL suggests to me that there was some error that caused the backup to abort prior to completion.

Did the backup complete? Why would it continue to run for an hour and then throw a fatal error? Or is the “FATAL” not an execution error within the application, but just a summary that the backup task did not complete without errors?

2

It’s failed and will be deleted. I suggest you use LUKS for encryption. It’s more secure and more performant. UrBackup server uses NAME_MAX (default 255 on Linux) for max file name. I guess you can search and replace in the code to work around this issue.

3

I don’t really have a choice what encryption to use, I now run Urbackup on a Synology NAS from your docker image. So there is only one flavour of encryption, and compiling Urbackup and rebuilding the docker image is way beyond my technical skills.

I’ll try removing the offending files, they are only there so that windows search can index email text.