diff options
| author | Holger Smolinski <Holger.Smolinski@de.ibm.com> | 2009-01-09 14:14:51 +0300 |
|---|---|---|
| committer | Martin Schwidefsky <schwidefsky@de.ibm.com> | 2009-01-09 14:15:05 +0300 |
| commit | 13de227bcd80fbdaeebe1f31154487dddb7d5b1e (patch) | |
| tree | 3f37f92d9fd5dd3c155544afb06cfe8117ec708c /arch/s390 | |
| parent | 1301809bcee33c2153605b4387c57fab75f9800a (diff) | |
| download | linux-13de227bcd80fbdaeebe1f31154487dddb7d5b1e.tar.xz | |
[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 'arch/s390')
| -rw-r--r-- | arch/s390/include/asm/dasd.h | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/arch/s390/include/asm/dasd.h b/arch/s390/include/asm/dasd.h index 55b2b80cdf6e..fb50a7864dd5 100644 --- a/arch/s390/include/asm/dasd.h +++ b/arch/s390/include/asm/dasd.h @@ -78,6 +78,7 @@ typedef struct dasd_information2_t { #define DASD_FEATURE_USEDIAG 0x02 #define DASD_FEATURE_INITIAL_ONLINE 0x04 #define DASD_FEATURE_ERPLOG 0x08 +#define DASD_FEATURE_FAILFAST 0x10 #define DASD_PARTN_BITS 2 |