FileSystemExporter cannot cross os boundary
When I run the test:
pytest -v -r sx --color=yes --pyargs pulpcore.tests.functional.api.using_plugin.test_filesystemexport::FilesystemExportTestCase::test_delete -x on Fedora33 I receive the error:
E pulp_smash.pulp3.bindings.PulpTaskError: (PulpTaskError(...), "Pulp task failed ([Errno 18] Invalid cross-device link: '/var/lib/pulp/media/artifact/de/1e4813fedff7ee0223d63c4aaba1b9b3399cbff0edf059083be7ab1a157f9d' -> '/tmp/10be1fa3-87e1-49f9-8653-27d4df1dfd2c/2.iso')")'
The suggestion came up that it should us a symlink not a hardlink. Here is the background IRC convo:
2021-05-04 11:33:22 dalley in general though, it's the kind of error you get when you try to move or link a file between two separate filesystems 2021-05-04 11:33:28 bmbouter I installed last night so I thought I didn't get it yet 2021-05-04 11:33:29 dalley and /tmp is a separate one I believe 2021-05-04 11:33:29 ggainey (this isn't PulpExport, it's another kind-of export, fwiw) 2021-05-04 11:33:48 bmbouter that's actually what I'm going to try to fix (the django based issue) 2021-05-04 11:34:40 bmbouter yeah I have Django==2.2.20 2021-05-04 11:35:55 bmbouter dalley: lgtm, https://github.com/pulp/pulpcore/pull/1302#pullrequestreview-651382325 2021-05-04 11:37:08 dalley bmbouter, do I need to say something about the signature of ContentAssociation stage changing or should I just add a default 2021-05-04 11:37:49 dalley or, honestly, should we just remove both from the API 2021-05-04 11:37:56 ggainey ok, so, filesystemexporter 'assumes' you can link betwen where the artifacts are, and where you told it to export to : https://github.com/pulp/pulpcore/blob/master/pulpcore/app/models/exporter.py#L99-L104 2021-05-04 11:38:05 ggainey bmbouter: ^^ 2021-05-04 11:38:27 ggainey I haven't seen the error before tho, fwiw 2021-05-04 11:38:38 bmbouter I think it has to be with me doing this in a vagrant env 2021-05-04 11:39:17 ggainey yeah, could be 2021-05-04 11:39:34 ggainey hrm, which vagrant box are you on? lemme run the test on one of mine 2021-05-04 11:39:51 dalley I've been dealing with similar issues in my side project. trying to recursively copy files a directory /tmp to somewhere in /home is sadly much more difficult than one would hope 2021-05-04 11:41:30 ggainey I have a cat in my ofc snoring so loudly I can hear them thru my headphones :) 2021-05-04 11:42:55 bmbouter ha 2021-05-04 11:42:59 ggainey bmbouter: oh fun - test runs fine on my centos7 vagrant, fails on my f33 w/your error 2021-05-04 11:43:10 bmbouter I'm on pulp3-source-fedora33 2021-05-04 11:43:39 ggainey yeah same 2021-05-04 11:43:47 bmbouter well that's comforting (no joke) 2021-05-04 11:43:54 ggainey and the 2to3 centos box doesn't have /tmp on its own FS 2021-05-04 11:44:00 bmbouter mmm 2021-05-04 11:44:12 bmbouter so what do you think we should do for resolution for dev envs 2021-05-04 11:44:24 bmbouter I mean the test isn't wrong par-se 2021-05-04 11:44:36 bmbouter probably something about the f33 env is wrong... 2021-05-04 11:46:53 <-- quba42 (~email@example.com) has quit (Quit: Leaving) 2021-05-04 11:47:42 ggainey bmbouter: hrm - one could make the case that the code should be using os.symlink() instead of creating a hardlink 2021-05-04 11:48:30 ggainey because right now it makes Assumptions about the partitioning of your system, that it prob shouldn't 2021-05-04 11:49:17 ggainey having /tmp on its own FS isn't terribly uncommon - and having F33 set up this way, has shown us a potential problem, so yay? :)
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