ext4 has 2^32 inode limit

[iczerjones]

Expanding the filesystem of turnkey-root beyond the 32-bit inode limit does not appear to be possible. An alternative configuration is needed to continue expanding the volume

[iczerjones]

Considering making the default autolvm setup action forcing the creation of a separate storage volume rather than defaulting to expanding the root volume. Volume (if using ext4) requires using -largefile or -largefile4 to expand inode limit to be better suited for large backups.

Reference for details: https://wiki.archlinux.org/title/ext4

/srv/storage is the target backup location for Turnkey (by default), so may also need to consider detection of any changes to this location in order to move the volume mount to accommodate.