1. Please describe the problem: When creating a hardlink, the ctime of the inode is updated, yet when deleting the hardlink again, the ctime stays the same. 2. What is the Version-Release number of the kernel: kernel-6.8.4-200.fc39 3. Did it work previously in Fedora? If so, what kernel version did the issue *first* appear? Old kernels are available for download at https://koji.fedoraproject.org/koji/packageinfo?packageID=8 : Yes, it did work before. It seems to work on 6.6.3 (other person's machine) but it did not work on 6.7.9. It also doesn't work on 6.8.4 both on Fedora and Arch Linux. 4. Can you reproduce this issue? If so, please provide the steps to reproduce the issue below: $ touch created $ ls -lc --time-style=+%N created $ ln created hardlinked $ ls -lc --time-style=+%N created $ rm hardlinked $ ls -lc --time-style=+%N created The last `ls` reports the same timestamp as the previous one, but only on btrfs. On tmpfs the ctime is updated. 5. Does this problem occur with the latest Rawhide kernel? To install the Rawhide kernel, run ``sudo dnf install fedora-repos-rawhide`` followed by ``sudo dnf update --enablerepo=rawhide kernel``: 6. Are you running any modules that not shipped with directly Fedora's kernel?: No. 7. Please attach the kernel logs. You can get the complete kernel log for a boot with ``journalctl --no-hostname -k > dmesg.txt``. If the issue occurred on a previous boot, use the journalctl ``-b`` flag. Reproducible: Always
kernel 6.11.0-0.rc7.56.fc41.x86_64 $ touch created $ ls -lc --time-style=+%N created -rw-r--r--. 1 chris chris 0 910135001 created $ ln created hardlinked $ ls -lc --time-style=+%N created -rw-r--r--. 2 chris chris 0 624001513 created $ rm hardlinked $ ls -lc --time-style=+%N created -rw-r--r--. 1 chris chris 0 302389811 created
It's an old article, but I'm not aware of a consensus on how ctime should be handled. https://lwn.net/Articles/397442/
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