I have seen multiple times how HDDs fail, both in others' servers, and in my own computers. They usually develop unreadable sectors, and the rest of data can be recovered under Linux using tools like ddrescue to another HDD. But I have never seen any SSD failures myself before. Until today.
Well, this case is not that different.
Today, my desktop computer failed to boot, with some error messages from systemd about failing to start services. I thought that it might be a one-off error, rebooted it, only to find out that the root partition (XFS on LUKS on /dev/sda2) failed to mount. The error in dmesg told me to run xfs_repair , which I did not do initially.