I have just done a fresh install of Ubuntu 21.10 for Raspberry Pi ARM64 in order to try out the new release.
After performing an apt upgrade and updating the iscsi initiator name I tried to run
sudo iscsiadm --mode discovery --type sendtargets --portal 10.1.0.20
but I got the following error
iscsiadm: read error (-1/104), daemon died?
iscsiadm: Could not scan /sys/class/iscsi_transport.
libkmod: ERROR ../libkmod/libkmod-module.c:838 kmod_module_insert_module: could not
find module by name='iscsi_tcp'
iscsiadm: Could not insert module tcp. Kmod error -2
iscsiadm: iSCSI driver tcp is not loaded. Load the module then retry the command.
iscsiadm: Could not perform SendTargets discovery: iSCSI driver not found. Please make sure it is loaded, and retry the operation
modprobe iscsi_tcp shows
modprobe: FATAL: Module iscsi_tcp not found in directory /lib/modules/5.13.0-1008-raspi
How can I enable / install / compile this missing kernel module?
>Solution :
It is included in linux-modules-extra-*-raspi packages.
Similar issue may solved by checking Package Search online or apt-file offline (but it needs to download big index files) and search the missing file.