This run of mill microSD card failure? Or some type of bug? I rebooted, fsck ran and passed, it was set to force mode and repair yes… but I did not see it report any errors. So not sure what the following means:
[180656.532796] systemd-journald[263]: Failed to write entry (9 items, 389 bytes), ignoring: Input/output error
[180656.533344] systemd-journald[263]: Failed to rotate /var/log/journal/afc0172889b94c3eb80e8861d17fa586/system.journal: Read-only file system
[180656.534234] systemd-journald[263]: Failed to write entry (9 items, 389 bytes), ignoring: Input/output error
[180656.535001] systemd-journald[263]: Failed to rotate /var/log/journal/afc0172889b94c3eb80e8861d17fa586/system.journal: Read-only file system
[180656.535885] systemd-journald[263]: Failed to write entry (9 items, 389 bytes), ignoring: Input/output error
[180658.512404] EXT4-fs error (device mmcblk1p3): __ext4_find_entry:1648: inode #134885: comm gmain: reading directory lblock 0
[180658.513895] systemd-journald[263]: Failed to rotate /var/log/journal/afc0172889b94c3eb80e8861d17fa586/system.journal: Read-only file system
Clearly the root file system went into read-only mode. This was on RADXA Zero 3E that is running the Debian B6 image (not the CLI variant, but the XFCE variant).