s390/dasd: Add new ioctl BIODASDCHECKFMT
Implement new DASD IOCTL BIODASDCHECKFMT to check a range of tracks on a
DASD volume for correct formatting. The following characteristics are
checked:
- Block size
- ECKD key length
- ECKD record ID
- Number of records per track
Signed-off-by: Jan Höppner <hoeppner@linux.vnet.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
diff --git a/drivers/s390/block/dasd.c b/drivers/s390/block/dasd.c
index 4adb6d1..8973d34 100644
--- a/drivers/s390/block/dasd.c
+++ b/drivers/s390/block/dasd.c
@@ -1638,6 +1638,9 @@
struct dasd_ccw_req *cqr, *next;
struct dasd_device *device;
unsigned long long now;
+ int nrf_suppressed = 0;
+ int fp_suppressed = 0;
+ u8 *sense = NULL;
int expires;
if (IS_ERR(irb)) {
@@ -1673,7 +1676,23 @@
dasd_put_device(device);
return;
}
- device->discipline->dump_sense_dbf(device, irb, "int");
+
+ /*
+ * In some cases 'File Protected' or 'No Record Found' errors
+ * might be expected and debug log messages for the
+ * corresponding interrupts shouldn't be written then.
+ * Check if either of the according suppress bits is set.
+ */
+ sense = dasd_get_sense(irb);
+ if (sense) {
+ fp_suppressed = (sense[1] & SNS1_FILE_PROTECTED) &&
+ test_bit(DASD_CQR_SUPPRESS_FP, &cqr->flags);
+ nrf_suppressed = (sense[1] & SNS1_NO_REC_FOUND) &&
+ test_bit(DASD_CQR_SUPPRESS_NRF, &cqr->flags);
+ }
+ if (!(fp_suppressed || nrf_suppressed))
+ device->discipline->dump_sense_dbf(device, irb, "int");
+
if (device->features & DASD_FEATURE_ERPLOG)
device->discipline->dump_sense(device, cqr, irb);
device->discipline->check_for_device_change(device, cqr, irb);
@@ -2312,6 +2331,7 @@
{
struct dasd_device *device;
struct dasd_ccw_req *cqr, *n;
+ u8 *sense = NULL;
int rc;
retry:
@@ -2358,6 +2378,20 @@
rc = 0;
list_for_each_entry_safe(cqr, n, ccw_queue, blocklist) {
/*
+ * In some cases the 'File Protected' or 'Incorrect Length'
+ * error might be expected and error recovery would be
+ * unnecessary in these cases. Check if the according suppress
+ * bit is set.
+ */
+ sense = dasd_get_sense(&cqr->irb);
+ if (sense && sense[1] & SNS1_FILE_PROTECTED &&
+ test_bit(DASD_CQR_SUPPRESS_FP, &cqr->flags))
+ continue;
+ if (scsw_cstat(&cqr->irb.scsw) == 0x40 &&
+ test_bit(DASD_CQR_SUPPRESS_IL, &cqr->flags))
+ continue;
+
+ /*
* for alias devices simplify error recovery and
* return to upper layer
* do not skip ERP requests