On 8/1/22 10:47 PM, Wenchao Hao wrote: > I found an issue that kernel would send ISCSI_KEVENT_UNBIND_SESSION > for multiple times which should be fixed. > > This patch introduce target_state in iscsi_cls_session to make > sure session would send only one ISCSI_KEVENT_UNBIND_SESSION. > > But this would break issue fixed in commit 13e60d3ba287 ("scsi: iscsi: > Report unbind session event when the target has been removed"). The issue > is iscsid died for any reason after it send unbind session to kernel, once > iscsid restart again, it loss kernel's ISCSI_KEVENT_UNBIND_SESSION event. > > Now kernel think iscsi_cls_session has already sent an > ISCSI_KEVENT_UNBIND_SESSION event and would not send it any more. Which > would cause userspace unable to logout. Actually the session is in > invalid state(it's target_id is INVALID), iscsid should not sync this > session in it's restart. > > So we need to check session's target state during iscsid restart, > if session is in unbound state, do not sync this session and perform > session teardown. It's reasonable because once a session is unbound, we > can not recover it any more(mainly because it's target id is INVALID) > I think we are ok now. Do you have a link to the userspace parts so I can make sure we have everything covered now?