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Code Issues Releases Wiki Activity

scsi: qla2xxx: Fix disk failure to rediscover

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User experienced some of the LUN failed to get rediscovered after long
cable pull test. The issue is triggered by a race condition between driver
setting session online state vs starting the LUN scan process at the same
time. Current code set the online state after notifying the session is
available. In this case, trigger to start the LUN scan process happened
before driver could set the session in online state.  LUN scan ends up with
failure due to the session online check was failing.

Set the online state before reporting of the availability of the session.

Link: https://lore.kernel.org/r/20220310092604.22950-3-njavali@marvell.com
Fixes: aecf043443 ("scsi: qla2xxx: Fix Remote port registration")
Cc: stable@vger.kernel.org
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 2022-03-10 01:25:53 -08:00 committed by Martin K. Petersen
parent 58ca5999e0
commit 6a45c8e137
2 changed files with 8 additions and 2 deletions
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5
drivers/scsi/qla2xxx/qla_init.c
View file

@ -5758,6 +5758,8 @@ qla2x00_reg_remote_port(scsi_qla_host_t *vha, fc_port_t *fcport)
if (atomic_read(&fcport->state) == FCS_ONLINE)
return;
qla2x00_set_fcport_state(fcport, FCS_ONLINE);
rport_ids.node_name = wwn_to_u64(fcport->node_name);
rport_ids.port_name = wwn_to_u64(fcport->port_name);
rport_ids.port_id = fcport->d_id.b.domain << 16 |
@ -5858,6 +5860,7 @@ qla2x00_update_fcport(scsi_qla_host_t *vha, fc_port_t *fcport)
qla2x00_reg_remote_port(vha, fcport);
break;
case MODE_TARGET:
qla2x00_set_fcport_state(fcport, FCS_ONLINE);
if (!vha->vha_tgt.qla_tgt->tgt_stop &&
!vha->vha_tgt.qla_tgt->tgt_stopped)
qlt_fc_port_added(vha, fcport);
@ -5875,8 +5878,6 @@ qla2x00_update_fcport(scsi_qla_host_t *vha, fc_port_t *fcport)
if (NVME_TARGET(vha->hw, fcport))
qla_nvme_register_remote(vha, fcport);
qla2x00_set_fcport_state(fcport, FCS_ONLINE);
if (IS_IIDMA_CAPABLE(vha->hw) && vha->hw->flags.gpsc_supported) {
if (fcport->id_changed) {
fcport->id_changed = 0;

5
drivers/scsi/qla2xxx/qla_nvme.c
View file

@ -37,6 +37,11 @@ int qla_nvme_register_remote(struct scsi_qla_host *vha, struct fc_port *fcport)
(fcport->nvme_flag & NVME_FLAG_REGISTERED))
return 0;
if (atomic_read(&fcport->state) == FCS_ONLINE)
return 0;
qla2x00_set_fcport_state(fcport, FCS_ONLINE);
fcport->nvme_flag &= ~NVME_FLAG_RESETTING;
memset(&req, 0, sizeof(struct nvme_fc_port_info));