Issue with local diff on NFS mount with symlinks

juhp / pkgtreediff

Tool for comparing rpm package trees

https://hackage.haskell.org/package/pkgtreediff

GNU General Public License v3.0

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Issue with local diff on NFS mount with symlinks #2

Open jimbair opened 5 years ago

jimbair commented 5 years ago

While diffing two composes that are stored on NFS (with symlinks back to the packages to avoid duplicate rpms across composes), it appears to be skipping over the diff entirely. I assume either the target folders being on NFS, or the packages in the folders being symlinks, is the culprit.

When run locally on the server, it cleanly exits (0) in 0.003s with no diff results
When run over http from my laptop aimed at the same server, the diff takes 1m40s with 44 updates showing

I'll send an email as well with some more details.

jimbair commented 5 years ago

Update: I fetched two full composes from the same branch, and local diffs seem to not run at all? These same two folders work great over HTTP:


[jim@lenovo test]$ ls
17  3
[jim@lenovo test]$ du -hscL *
36G 17
36G 3
72G total
[jim@lenovo test]$ time pkgtreediff ./3 ./17 -r -A

real    0m0.006s
user    0m0.004s
sys 0m0.002s
[jim@lenovo test]$ echo $?
0
[jim@lenovo test]$

This is running on Fedora 30 (laptop) and centos 7 (server) using copr repos as well with latest versions in copr.

juhp commented 4 years ago

I suspect it may be ignoring symlinks, but that can surely be addressed.

jimbair commented 4 years ago

Yep, that was my assumption as well! I appreciate you looking into it.

juhp commented 4 years ago

I can't really see anything yet in my code that could be affecting this. Could you give some example of the symlinks you have?

Maybe I need to pass you a test prog or find a machine with nfs.