diff options
| author | Holger Smolinski <Holger.Smolinski@de.ibm.com> | 2009-01-09 12:14:51 +0100 |
|---|---|---|
| committer | Martin Schwidefsky <schwidefsky@de.ibm.com> | 2009-01-09 12:15:05 +0100 |
| commit | 13de227bcd80fbdaeebe1f31154487dddb7d5b1e (patch) | |
| tree | 3f37f92d9fd5dd3c155544afb06cfe8117ec708c /drivers/s390/block/dasd_diag.c | |
| parent | [S390] dasd: send change uevents for dasd block devices (diff) | |
| download | linux-13de227bcd80fbdaeebe1f31154487dddb7d5b1e.tar.xz linux-13de227bcd80fbdaeebe1f31154487dddb7d5b1e.zip | |
[S390] dasd: add device attribute to disable blocking on lost paths
When the connection between host and storage server is lost, the
dasd device driver usually blocks all I/O on affected devices and
waits for them to reappear. In some setups however it would be
better if the I/O is returned as error so that device can be
recovered by some other means, eg. in a raid or multipath setup.
Signed-off-by: Holger Smolinski <Holger.Smolinski@de.ibm.com>
Signed-off-by: Stefan Weinhuber <wein@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Diffstat (limited to 'drivers/s390/block/dasd_diag.c')
| -rw-r--r-- | drivers/s390/block/dasd_diag.c | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/drivers/s390/block/dasd_diag.c b/drivers/s390/block/dasd_diag.c index 7844461a995b..ef2a56952054 100644 --- a/drivers/s390/block/dasd_diag.c +++ b/drivers/s390/block/dasd_diag.c @@ -544,7 +544,8 @@ static struct dasd_ccw_req *dasd_diag_build_cp(struct dasd_device *memdev, } cqr->retries = DIAG_MAX_RETRIES; cqr->buildclk = get_clock(); - if (blk_noretry_request(req)) + if (blk_noretry_request(req) || + block->base->features & DASD_FEATURE_FAILFAST) set_bit(DASD_CQR_FLAGS_FAILFAST, &cqr->flags); cqr->startdev = memdev; cqr->memdev = memdev; |