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| author |   Arun Easi <aeasi@marvell.com> | 2019-07-26 09:07:36 -0700 |
|---|---|---|
| committer |   Martin K. Petersen <martin.petersen@oracle.com> | 2019-08-07 18:08:12 -0400 |
| commit | 9e744591ef1b8df27c25c68dac858dada8688f77 (patch) | |
| tree | cad03c11844587bbc21e50272f8190e4dae60460 /drivers/scsi/qla2xxx/qla_init.c | |
| parent | scsi: qla2xxx: Correct error handling during initialization failures (diff) | |
| download | linux-dev-9e744591ef1b8df27c25c68dac858dada8688f77.tar.xz linux-dev-9e744591ef1b8df27c25c68dac858dada8688f77.zip | |
scsi: qla2xxx: Fix NVMe port discovery after a short device port loss
The following sequence of event leads to NVME port disappearing:
- device port shut
- nvme_fc_unregister_remoteport
- device port online
- remote port delete completes
- relogin is scheduled
- "post gidpn" message appears due to rscn generation # mismatch
In short, if a device comes back online sooner than an unregister
completion, a mismatch in rscn generation number occurs, which is not
handled correctly during device relogin. Fix this by starting with a redo
of GNL.
When ql2xextended_error_logging is enabled, the re-plugged device's
discovery stops with the following messages printed:
--8<--
qla2xxx [0000:41:00.0]-480d:3: Relogin scheduled.
qla2xxx [0000:41:00.0]-4800:3: DPC handler sleeping.
qla2xxx [0000:41:00.0]-2902:3: qla24xx_handle_relogin_event 21:00:00:24:ff:17:9e:91 DS 0 LS 7 P 0 del 2 cnfl
(null) rscn 1|2 login 1|2 fl 1
qla2xxx [0000:41:00.0]-28e9:3: qla24xx_handle_relogin_event 1666 21:00:00:24:ff:17:9e:91 post gidpn
qla2xxx [0000:41:00.0]-480e:3: Relogin end.
--8<--
Signed-off-by: Arun Easi <aeasi@marvell.com>
Signed-off-by: Himanshu Madhani <hmadhani@marvell.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Diffstat (limited to 'drivers/scsi/qla2xxx/qla_init.c')
| -rw-r--r-- | drivers/scsi/qla2xxx/qla_init.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/drivers/scsi/qla2xxx/qla_init.c b/drivers/scsi/qla2xxx/qla_init.c index 1a8b4a587e0f..194a15b2f5f7 100644 --- a/drivers/scsi/qla2xxx/qla_init.c +++ b/drivers/scsi/qla2xxx/qla_init.c @@ -1687,9 +1687,9 @@ void qla24xx_handle_relogin_event(scsi_qla_host_t *vha, } if (fcport->last_rscn_gen != fcport->rscn_gen) { - ql_dbg(ql_dbg_disc, vha, 0x20e9, "%s %d %8phC post gidpn\n", + ql_dbg(ql_dbg_disc, vha, 0x20e9, "%s %d %8phC post gnl\n", __func__, __LINE__, fcport->port_name); - + qla24xx_post_gnl_work(vha, fcport); return; } |