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[S390] dasd: do path verification for paths added at runtime

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When a new path is added at runtime, the CIO layer will call the drivers
path_event callback. The DASD device driver uses this callback to trigger
a path verification for the new path. The driver will use only those
paths for I/O, which have been successfully verified.

Signed-off-by: Stefan Weinhuber <wein@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
This commit is contained in:
Stefan Weinhuber
2011-01-05 12:48:03 +01:00
committed by Martin Schwidefsky
parent ef19298b40
commit a4d26c6aec
9 changed files with 418 additions and 100 deletions
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3
drivers/s390/block/dasd_fba.c
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@@ -73,6 +73,7 @@ static struct ccw_driver dasd_fba_driver = {
.set_offline = dasd_generic_set_offline,
.set_online = dasd_fba_set_online,
.notify = dasd_generic_notify,
.path_event = dasd_generic_path_event,
.freeze = dasd_generic_pm_freeze,
.thaw = dasd_generic_restore_device,
.restore = dasd_generic_restore_device,
@@ -164,6 +165,7 @@ dasd_fba_check_characteristics(struct dasd_device *device)
}
device->default_expires = DASD_EXPIRES;
device->path_data.opm = LPM_ANYPATH;
readonly = dasd_device_is_ro(device);
if (readonly)
@@ -596,6 +598,7 @@ static struct dasd_discipline dasd_fba_discipline = {
.max_blocks = 96,
.check_device = dasd_fba_check_characteristics,
.do_analysis = dasd_fba_do_analysis,
.verify_path = dasd_generic_verify_path,
.fill_geometry = dasd_fba_fill_geometry,
.start_IO = dasd_start_IO,
.term_IO = dasd_term_IO,