Question: can anyone give me detailed architecture of LIO

[onkar6699]

No description provided.

[gonzoleeman]

As I replied in open-iscsi, please do some research first.

[onkar6699]

@gonzoleeman i read articles that you mentioned thank you i got some idea from this but just can you help me that LIO uses which kernel modules and how they collaborate with each other

[gonzoleeman]

Try:

lsmod | fgrep target

You have configfs, which is needed for target modules, and target_core_*, and iscsi_target_mod (if using iscsi).

Try:

for rpm in rtslib configshell targetcli; do rpm -ql python3-${rpm}-fb | xargs fgrep modprobe; done

(not actually tested, but that should be close)

Looks like (on my distro) that rtslib-fb does most of the "modprobe".

The interaction between user-level LIO code and the kernel is configfs, i.e. that's where the user-level code reads information and writes config changes.

You can enable debugging in the target subsystem(s) then perform simple tasks (like adding or deleting a target).