diff options
| author | Arun Easi <[email protected]> | 2019-07-26 09:07:36 -0700 |
|---|---|---|
| committer | Martin K. Petersen <[email protected]> | 2019-08-07 18:08:12 -0400 |
| commit | 9e744591ef1b8df27c25c68dac858dada8688f77 (patch) | |
| tree | cad03c11844587bbc21e50272f8190e4dae60460 /tools/perf/scripts/python/netdev-times.py | |
| parent | 26a77799195f4ff105f877042012c7fb355b3da1 (diff) | |
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 <[email protected]>
Signed-off-by: Himanshu Madhani <[email protected]>
Signed-off-by: Martin K. Petersen <[email protected]>
Diffstat (limited to 'tools/perf/scripts/python/netdev-times.py')
0 files changed, 0 insertions, 0 deletions