Skipping in backup:create task produces an error

I couldn't find if anyone already created this issue.

If you run rake gitlab:backup:create everything works as expected, the backup archive gets created.

If you run rake gitlab:backup:create SKIP=uploads,builds, backup archive creation will error out:

Creating backup archive: 1447844024_gitlab_backup.tar ... tar: uploads.tar.gz: Cannot stat: No such file or directory
tar: builds.tar.gz: Cannot stat: No such file or directory
tar: Exiting with failure status due to previous errors
creating archive 1447844024_gitlab_backup.tar failed

It seems that the backup archive gets created anyway however this is not user friendly and it will also error out on automatic upgrades with backups.

cc @JobV @kelvinmutuma @rspeicher

Reassigned to @marin

mentioned in issue #3530 (closed)

Seems that we create the tar here where we pass the things we want to add to the tar but we don't check if some of the tars are skipped.

Here we assume that the archives exist.

Basically, we need to do the same thing with archives as we are doing with folders few lines below

mentioned in merge request !1824 (merged)

MR merged, fix will be available starting with 8.2

Status changed to closed

mentioned in issue #3582 (closed)

mentioned in merge request !14785