Top "Fsync" questions

The fsync system call causes all modified data and attributes associated to a given file descriptor to be moved to a permanent storage device.

What exactly is Python's file.flush() doing?

I found this in the Python documentation for File Objects: flush() does not necessarily write the file’s data to …

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python io output-buffering fsync
Difference between fflush and fsync

I thought fsync() does fflush() internally, so using fsync() on a stream is OK. But I am getting an unexpected …

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fflush fsync c windows
How to do fsync on an ofstream?

I want to make sure that an ofstream has been written to the disk device. What's the portable way (portable …

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c++ ofstream fsync
Why does using fsync() to flush writes to disk speed up access?

We need an app to as much as possible, guarantee that when it reports a record persisted, it really was. …

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c performance fsync
Is rename() without fsync() safe?

Is it safe to call rename(tmppath, path) without calling fsync(tmppath_fd) first? I want the path to always …

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linux rename ext4 fsync
How to durably rename a file in POSIX?

What's the correct way to durably rename a file in a POSIX file system? Specifically wondering about fsyncs on the …

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directory posix rename ext4 fsync