One day, I uninstalled some Flatpaks and reinstalled them in the /home directory. Then the next day, I booted into Fedora and it got me to dracut’s emergency shell. It generated an ‘rdsosreport.txt` file, which can be found here.
I was told that the whole Flatpak thing probably has nothing to do with the issue, but I mentioned to make sure you have a complete picture. The same issue happens on both kernels I have (6.6.7-200 & 6.5.6-300), as well as the rescue version. Can this be troubleshooted?
Well, if you have important data on /dev/sdd6, you might want to make a low-level backup copy of it before attempting the repair. To make a backup, you’ll need a device that is at least as large as your /dev/sdd6 partition and you can use the “dd” (disk dump) command to make the copy. If /dev/sdd6 doesn’t contain important information (e.g. it is just your “root” partition, without your home directory data, and you can reconstruct it by doing a full reinstall if necessary) you can opt to skip the backup. Beware that it is quite possible that the repair operation can fail and leave your filesystem in an even worse/less-recoverable state.
If you are brave, you can run fsck -y /dev/sdd6 and hope for the best. Be sure not to interrupt the process once it begins.