How to debug ?

[karlkashofer]

Hi ! I got YATM running in a docker container. I start the container in priviledged mode. If i run mtx or stenc inside the container they will happily interact with the drive.

root@e867f5ce4a0f:/opt/yatm# mtx -f /dev/QUANTUMxxxxxxx_LLA status
  Storage Changer /dev/QUANTUMxxxxxxx_LLA:1 Drives, 25 Slots ( 0 Import/Export )
Data Transfer Element 0:Full (Storage Element 11 Loaded):VolumeTag = MU0001L7     

root@e867f5ce4a0f:/opt/yatm# stenc -f /dev/sg1
Status for /dev/sg1 (IBM ULTRIUM-HH7 J4D1)
--------------------------------------------------
Reading:                         Decrypting (AES-256-GCM-128)
                                 Unencrypted blocks not readable
Writing:                         Encrypting (AES-256-GCM-128)
Key instance counter:            1
Drive key desc. (U-KAD):         DGA2023
Current block status:            Not encrypted

root@e867f5ce4a0f:/opt/yatm# ltfs -o device_list
LTFS9015W Setting the locale to 'en_US.UTF-8'. If this is wrong, please set the LANG environment variable before starting ltfs.
32 LTFS14000I LTFS starting, LTFS version 2.5.0.0 (Prelim), log level 2.
32 LTFS14058I LTFS Format Specification version 2.4.0.
32 LTFS14104I Launched by "ltfs -o device_list".
32 LTFS14105I This binary is built for Linux (x86_64).
32 LTFS14106I GCC version is 12.2.0.
32 LTFS17087I Kernel version: Linux version 6.1.0-18-amd64 ([email protected]) (gcc-12 (Debian 12.2.0-14) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40) #1 SMP PREEMPT_DYNAMIC Debian 6.1.76-1 (2024-02-01) i386.
32 LTFS17089I Distribution: PRETTY_NAME="Debian GNU/Linux 12 (bookworm)".
32 LTFS17085I Plugin: Loading "sg" tape backend.
Tape Device list:.
Device Name = /dev/sg1 (0.0.1.0), Vendor ID = IBM     , Product ID = ULTRIUM-HH7     , Serial Number = C3EBA80000, Product Name =[ULTRIUM-HH7].

However, when i want to start a backup job i get no response, see attached image Pressing submit does nothing.

Any idea what to do ? How can i see what YATM is trying to do ? How can i debug this ? I see there is lots of logging statements in the code, but i cant see any of that output anywhere. How do i use the debug port ? Accessing it with a browser gives "404 page not found".

Thanks for a really interesting piece of software, would love to get it working ! Cheers, KK