Pulp

Steps to reproduce:

1. Create some file repository in /file
2. Set permissions on it:

chown root:root /file -R
chmod 755 /file -R

3. create a remote pointed to file:///file/PULP_MANIFEST
4. Sync the remote with repository

You will get an error:

    traceback: |2
        File "/usr/local/lib/pulp/lib64/python3.6/site-packages/rq/worker.py", line 822, in perform_job
          rv = job.perform()
        File "/usr/local/lib/pulp/lib64/python3.6/site-packages/rq/job.py", line 605, in perform
          self._result = self._execute()
        File "/usr/local/lib/pulp/lib64/python3.6/site-packages/rq/job.py", line 611, in _execute
          return self.func(*self.args, **self.kwargs)
        File "/usr/local/lib/pulp/src/pulp-file/pulp_file/app/tasks/synchronizing.py", line 45, in synchronize
          dv.create()
        File "/usr/local/lib/pulp/lib64/python3.6/site-packages/pulpcore/plugin/stages/declarative_version.py", line 149, in create
          loop.run_until_complete(pipeline)
        File "/usr/lib64/python3.6/asyncio/base_events.py", line 484, in run_until_complete
          return future.result()
        File "/usr/local/lib/pulp/lib64/python3.6/site-packages/pulpcore/plugin/stages/api.py", line 209, in create_pipeline
          await asyncio.gather(*futures)
        File "/usr/local/lib/pulp/lib64/python3.6/site-packages/pulpcore/plugin/stages/api.py", line 43, in __call__
          await self.run()
        File "/usr/local/lib/pulp/lib64/python3.6/site-packages/pulpcore/plugin/stages/artifact_stages.py", line 196, in run
          d_artifact.artifact for d_artifact in da_to_save)):
        File "/usr/local/lib/pulp/lib64/python3.6/site-packages/pulpcore/app/models/content.py", line 42, in bulk_get_or_create
          return super().bulk_create(objs, batch_size=batch_size)
        File "/usr/local/lib/pulp/lib64/python3.6/site-packages/django/db/models/manager.py", line 82, in manager_method
          return getattr(self.get_queryset(), name)(*args, **kwargs)
        File "/usr/local/lib/pulp/lib64/python3.6/site-packages/django/db/models/query.py", line 468, in bulk_create
          self._batched_insert(objs_with_pk, fields, batch_size, ignore_conflicts=ignore_conflicts)
        File "/usr/local/lib/pulp/lib64/python3.6/site-packages/django/db/models/query.py", line 1204, in _batched_insert
          ignore_conflicts=ignore_conflicts,
        File "/usr/local/lib/pulp/lib64/python3.6/site-packages/django/db/models/query.py", line 1186, in _insert
          return query.get_compiler(using=using).execute_sql(return_id)
        File "/usr/local/lib/pulp/lib64/python3.6/site-packages/django/db/models/sql/compiler.py", line 1334, in execute_sql
          for sql, params in self.as_sql():
        File "/usr/local/lib/pulp/lib64/python3.6/site-packages/django/db/models/sql/compiler.py", line 1278, in as_sql
          for obj in self.query.objs
        File "/usr/local/lib/pulp/lib64/python3.6/site-packages/django/db/models/sql/compiler.py", line 1278, in <listcomp>
          for obj in self.query.objs
        File "/usr/local/lib/pulp/lib64/python3.6/site-packages/django/db/models/sql/compiler.py", line 1277, in <listcomp>
          [self.prepare_value(field, self.pre_save_val(field, obj)) for field in fields]
        File "/usr/local/lib/pulp/lib64/python3.6/site-packages/django/db/models/sql/compiler.py", line 1228, in pre_save_val
          return field.pre_save(obj, add=True)
        File "/usr/local/lib/pulp/lib64/python3.6/site-packages/pulpcore/app/models/fields.py", line 62, in pre_save
          return super().pre_save(model_instance, add)
        File "/usr/local/lib/pulp/lib64/python3.6/site-packages/django/db/models/fields/files.py", line 288, in pre_save
          file.save(file.name, file.file, save=False)
        File "/usr/local/lib/pulp/lib64/python3.6/site-packages/django/db/models/fields/files.py", line 87, in save
          self.name = self.storage.save(name, content, max_length=self.field.max_length)
        File "/usr/local/lib/pulp/lib64/python3.6/site-packages/pulpcore/app/models/storage.py", line 108, in save
          return self._save(name, content)
        File "/usr/local/lib/pulp/lib64/python3.6/site-packages/django/core/files/storage.py", line 261, in _save
          file_move_safe(content.temporary_file_path(), full_path)
        File "/usr/local/lib/pulp/lib64/python3.6/site-packages/django/core/files/move.py", line 80, in file_move_safe
          os.remove(old_file_name)
    description: "[Errno 30] Read-only file system: '/mnt/disk/file1/4.iso'"

if you chmod 777 /file, it syncs fine fine.