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scsi: qla2xxx: Fix login timeout 

Multipath errors were seen during failback due to login timeout.  The
remote device sent LOGO, the local host tore down the session and did
relogin. The RSCN arrived indicates remote device is going through failover
after which the relogin is in a 20s timeout phase.  At this point the
driver is stuck in the relogin process.  Add a fix to delete the session as
part of abort/flush the login.

Link: https://lore.kernel.org/r/20200806111014.28434-5-njavali@marvell.com
Reviewed-by: Himanshu Madhani <himanshu.madhani@oracle.com>
Signed-off-by: Quinn Tran <qutran@marvell.com>
Signed-off-by: Nilesh Javali <njavali@marvell.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
This commit is contained in:
Quinn Tran 2020-08-06 04:10:07 -07:00 committed by Martin K. Petersen
parent 4709272f63
commit abb31aeaa9
2 changed files with 16 additions and 4 deletions
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18
drivers/scsi/qla2xxx/qla_gs.c
View File

@ -3538,10 +3538,22 @@ login_logout:
}
if (fcport->scan_state != QLA_FCPORT_FOUND) {
bool do_delete = false;
if (fcport->scan_needed &&
fcport->disc_state == DSC_LOGIN_PEND) {
/* Cable got disconnected after we sent
* a login. Do delete to prevent timeout.
*/
fcport->logout_on_delete = 1;
do_delete = true;
}
fcport->scan_needed = 0;
if ((qla_dual_mode_enabled(vha) ||
qla_ini_mode_enabled(vha)) &&
atomic_read(&fcport->state) == FCS_ONLINE) {
if (((qla_dual_mode_enabled(vha) ||
qla_ini_mode_enabled(vha)) &&
atomic_read(&fcport->state) == FCS_ONLINE) ||
do_delete) {
if (fcport->loop_id != FC_NO_LOOP_ID) {
if (fcport->flags & FCF_FCP2_DEVICE)
fcport->logout_on_delete = 0;

2
drivers/scsi/qla2xxx/qla_target.c
View File

@ -1270,7 +1270,7 @@ void qlt_schedule_sess_for_deletion(struct fc_port *sess)
qla24xx_chk_fcp_state(sess);
ql_dbg(ql_dbg_tgt, sess->vha, 0xe001,
ql_dbg(ql_dbg_disc, sess->vha, 0xe001,
"Scheduling sess %p for deletion %8phC\n",
sess, sess->port_name);