We are seeing a similar issue, but I believe a different result.

/usr/local/bin/ltfs -o devname=/dev/sg2 /mnt/lto9-2
134a LTFS14000I LTFS starting, LTFS version 2.5.0.0 (Prelim), log level 2.
134a LTFS14058I LTFS Format Specification version 2.4.0.
134a LTFS14104I Launched by "/usr/local/bin/ltfs -o devname=/dev/sg2 /mnt/lto9-2".
134a LTFS14105I This binary is built for Linux (x86_64).
134a LTFS14106I GCC version is 8.5.0 20210514 (Red Hat 8.5.0-4).
134a LTFS17087I Kernel version: Linux version 4.18.0-372.19.1.el8_6.x86_64 ([mockbuild@dal1-prod-builder001.bld.equ.rockylinux.org](mailto:mockbuild@dal1-prod-builder001.bld.equ.rockylinux.org)) (gcc version 8.5.0 20210514 (Red Hat 8.5.0-10) (GCC)) #1 SMP Tue Aug 2 16:19:42 UTC 2022 i386.
134a LTFS17089I Distribution: Rocky Linux release 8.6 (Green Obsidian).
134a LTFS17089I Distribution: NAME="Rocky Linux".
134a LTFS17089I Distribution: Rocky Linux release 8.6 (Green Obsidian).
134a LTFS17089I Distribution: Rocky Linux release 8.6 (Green Obsidian).
134a LTFS17089I Distribution: Rocky Linux release 8.6 (Green Obsidian).
134a LTFS14063I Sync type is "time", Sync time is 300 sec.
134a LTFS17085I Plugin: Loading "sg" tape backend.
134a LTFS17085I Plugin: Loading "unified" iosched backend.
134a LTFS14095I Set the tape device write-anywhere mode to avoid cartridge ejection.
134a LTFS30209I Opening a device through sg-ibmtape driver (/dev/sg2).
134a LTFS30213I Unsupported Drive 'QUANTUM ' / 'ULTRIUM-HH9     '.
134a LTFS12012E Cannot open device: failed backend open call.
134a LTFS10004E Cannot open device '/dev/sg2'.