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| author | Stefan Weinhuber <wein@de.ibm.com> | 2010-03-08 14:26:24 +0300 |
|---|---|---|
| committer | Martin Schwidefsky <sky@mschwide.boeblingen.de.ibm.com> | 2010-03-08 14:26:27 +0300 |
| commit | 33b62a30f78536b976183cc764c08038ac011e0a (patch) | |
| tree | 60a18b4478c68082835fa6fee9a24bb1e7e8b312 /drivers/s390/block/dasd_3990_erp.c | |
| parent | 584dfddfce1bd81d877f14de2b56d4bc747af821 (diff) | |
| download | linux-33b62a30f78536b976183cc764c08038ac011e0a.tar.xz | |
[S390] dasd: automatic recognition of read-only devices
In z/VM it is possible to attach a device as read-only. To prevent
unintentional write requests and subsequent I/O errors, we can detect
this configuration using the z/VM DIAG 210 interface and set the
respective linux block device to read-only as well.
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_3990_erp.c')
| -rw-r--r-- | drivers/s390/block/dasd_3990_erp.c | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/drivers/s390/block/dasd_3990_erp.c b/drivers/s390/block/dasd_3990_erp.c index 44796ba4eb9b..51224f76b980 100644 --- a/drivers/s390/block/dasd_3990_erp.c +++ b/drivers/s390/block/dasd_3990_erp.c @@ -1045,6 +1045,10 @@ dasd_3990_erp_com_rej(struct dasd_ccw_req * erp, char *sense) erp->retries = 5; + } else if (sense[1] & SNS1_WRITE_INHIBITED) { + dev_err(&device->cdev->dev, "An I/O request was rejected" + " because writing is inhibited\n"); + erp = dasd_3990_erp_cleanup(erp, DASD_CQR_FAILED); } else { /* fatal error - set status to FAILED internal error 09 - Command Reject */ |