diff options
| author | Hannes Reinecke <[email protected]> | 2013-01-30 09:26:19 +0000 |
|---|---|---|
| committer | Martin Schwidefsky <[email protected]> | 2013-07-01 17:31:26 +0200 |
| commit | 5ea34a01423a27d4526f3551e8542f2f991bd4a0 (patch) | |
| tree | badb135a40e6070c2a4d474e6a240457cb18b484 /drivers/message/fusion/lsi/mpi_raid.h | |
| parent | 3d71ad32167c9124d5621b54c37a74ef38aa93b0 (diff) | |
s390/dasd: Fail all requests when DASD_FLAG_ABORTIO is set
Whenever a DASD request encounters a timeout we might
need to abort all outstanding requests on this or
even other devices.
This is especially useful if one wants to fail all
devices on one side of a RAID10 configuration, even
though only one device exhibited an error.
To handle this I've introduced a new device flag
DASD_FLAG_ABORTIO.
This flag is evaluated in __dasd_process_request_queue()
and will invoke blk_abort_request() for all
outstanding requests with DASD_CQR_FLAGS_FAILFAST set.
This will cause any of these requests to be aborted
immediately if the blk_timeout function is activated.
The DASD_FLAG_ABORTIO is also evaluated in
__dasd_process_request_queue to abort all
new request which would have the
DASD_CQR_FLAGS_FAILFAST bit set.
The flag can be set with the new ioctls 'BIODASDABORTIO'
and removed with 'BIODASDALLOWIO'.
Signed-off-by: Hannes Reinecke <[email protected]>
Signed-off-by: Stefan Weinhuber <[email protected]>
Signed-off-by: Martin Schwidefsky <[email protected]>
Diffstat (limited to 'drivers/message/fusion/lsi/mpi_raid.h')
0 files changed, 0 insertions, 0 deletions