How we spent two weeks hunting an NFS bug in the Linux kernel
On Sep. 14, the GitLab support team escalated a critical problem encountered by one of our customers: GitLab would run fine for a while, but after some time users encountered errors. When attempting to clone certain repositories via Git, users would see an opaque Stale file error message. The error message persisted for a long time, blocking employees from being able to work, unless a system administrator intervened manually by running ls in the directory itself.
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