From: Stefan Haberland <sth@xxxxxxxxxxxxx>
commit 7db4042336580dfd75cb5faa82c12cd51098c90b upstream.
Extent Space Efficient (ESE) or thin provisioned volumes need to be
formatted on demand during usual IO processing.
The dasd_ese_needs_format function checks for error codes that signal
the non existence of a proper track format.
The check for incorrect length is to imprecise since other error cases
leading to transport of insufficient data also have this flag set.
This might lead to data corruption in certain error cases for example
during a storage server warmstart.
Fix by removing the check for incorrect length and replacing by
explicitly checking for invalid track format in transport mode.
Also remove the check for file protected since this is not a valid
ESE handling case.
Cc: stable@xxxxxxxxxxxxxxx # 5.3+
Fixes: 5e2b17e712cf ("s390/dasd: Add dynamic formatting support for ESE volumes")
Reviewed-by: Jan Hoeppner <hoeppner@xxxxxxxxxxxxx>
Signed-off-by: Stefan Haberland <sth@xxxxxxxxxxxxx>
Link: https://lore.kernel.org/r/20240812125733.126431-3-sth@xxxxxxxxxxxxx
Signed-off-by: Jens Axboe <axboe@xxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
drivers/s390/block/dasd.c | 36 +++++++++++++++---------
drivers/s390/block/dasd_3990_erp.c | 10 +-----
drivers/s390/block/dasd_eckd.c | 55 ++++++++++++++++---------------------
drivers/s390/block/dasd_int.h | 2 -
4 files changed, 50 insertions(+), 53 deletions(-)
--- a/drivers/s390/block/dasd.c
+++ b/drivers/s390/block/dasd.c
@@ -1665,9 +1665,15 @@ static int dasd_ese_needs_format(struct
if (!sense)
return 0;
- return !!(sense[1] & SNS1_NO_REC_FOUND) ||
- !!(sense[1] & SNS1_FILE_PROTECTED) ||
- scsw_cstat(&irb->scsw) == SCHN_STAT_INCORR_LEN;
+ if (sense[1] & SNS1_NO_REC_FOUND)
+ return 1;
+
+ if ((sense[1] & SNS1_INV_TRACK_FORMAT) &&
+ scsw_is_tm(&irb->scsw) &&
+ !(sense[2] & SNS2_ENV_DATA_PRESENT))
+ return 1;
+
+ return 0;
}
static int dasd_ese_oos_cond(u8 *sense)
@@ -1688,7 +1694,7 @@ void dasd_int_handler(struct ccw_device
struct dasd_device *device;
unsigned long now;
int nrf_suppressed = 0;
- int fp_suppressed = 0;
+ int it_suppressed = 0;
struct request *req;
u8 *sense = NULL;
int expires;
@@ -1743,8 +1749,9 @@ void dasd_int_handler(struct ccw_device
*/
sense = dasd_get_sense(irb);
if (sense) {
- fp_suppressed = (sense[1] & SNS1_FILE_PROTECTED) &&
- test_bit(DASD_CQR_SUPPRESS_FP, &cqr->flags);
+ it_suppressed = (sense[1] & SNS1_INV_TRACK_FORMAT) &&
+ !(sense[2] & SNS2_ENV_DATA_PRESENT) &&
+ test_bit(DASD_CQR_SUPPRESS_IT, &cqr->flags);
nrf_suppressed = (sense[1] & SNS1_NO_REC_FOUND) &&
test_bit(DASD_CQR_SUPPRESS_NRF, &cqr->flags);
@@ -1759,7 +1766,7 @@ void dasd_int_handler(struct ccw_device
return;
}
}
- if (!(fp_suppressed || nrf_suppressed))
+ if (!(it_suppressed || nrf_suppressed))
device->discipline->dump_sense_dbf(device, irb, "int");
if (device->features & DASD_FEATURE_ERPLOG)
@@ -2513,14 +2520,17 @@ retry:
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.
+ * In some cases certain errors 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))
+ if (sense && (sense[1] & SNS1_INV_TRACK_FORMAT) &&
+ !(sense[2] & SNS2_ENV_DATA_PRESENT) &&
+ test_bit(DASD_CQR_SUPPRESS_IT, &cqr->flags))
+ continue;
+ if (sense && (sense[1] & SNS1_NO_REC_FOUND) &&
+ test_bit(DASD_CQR_SUPPRESS_NRF, &cqr->flags))
continue;
if (scsw_cstat(&cqr->irb.scsw) == 0x40 &&
test_bit(DASD_CQR_SUPPRESS_IL, &cqr->flags))
--- a/drivers/s390/block/dasd_3990_erp.c
+++ b/drivers/s390/block/dasd_3990_erp.c
@@ -1401,14 +1401,8 @@ dasd_3990_erp_file_prot(struct dasd_ccw_
struct dasd_device *device = erp->startdev;
- /*
- * In some cases the 'File Protected' error might be expected and
- * log messages shouldn't be written then.
- * Check if the according suppress bit is set.
- */
- if (!test_bit(DASD_CQR_SUPPRESS_FP, &erp->flags))
- dev_err(&device->cdev->dev,
- "Accessing the DASD failed because of a hardware error\n");
+ dev_err(&device->cdev->dev,
+ "Accessing the DASD failed because of a hardware error\n");
return dasd_3990_erp_cleanup(erp, DASD_CQR_FAILED);
--- a/drivers/s390/block/dasd_eckd.c
+++ b/drivers/s390/block/dasd_eckd.c
@@ -2201,6 +2201,7 @@ dasd_eckd_analysis_ccw(struct dasd_devic
cqr->status = DASD_CQR_FILLED;
/* Set flags to suppress output for expected errors */
set_bit(DASD_CQR_SUPPRESS_NRF, &cqr->flags);
+ set_bit(DASD_CQR_SUPPRESS_IT, &cqr->flags);
return cqr;
}
@@ -2482,7 +2483,6 @@ dasd_eckd_build_check_tcw(struct dasd_de
cqr->buildclk = get_tod_clock();
cqr->status = DASD_CQR_FILLED;
/* Set flags to suppress output for expected errors */
- set_bit(DASD_CQR_SUPPRESS_FP, &cqr->flags);
set_bit(DASD_CQR_SUPPRESS_IL, &cqr->flags);
return cqr;
@@ -4031,8 +4031,6 @@ static struct dasd_ccw_req *dasd_eckd_bu
/* Set flags to suppress output for expected errors */
if (dasd_eckd_is_ese(basedev)) {
- set_bit(DASD_CQR_SUPPRESS_FP, &cqr->flags);
- set_bit(DASD_CQR_SUPPRESS_IL, &cqr->flags);
set_bit(DASD_CQR_SUPPRESS_NRF, &cqr->flags);
}
@@ -4534,9 +4532,8 @@ static struct dasd_ccw_req *dasd_eckd_bu
/* Set flags to suppress output for expected errors */
if (dasd_eckd_is_ese(basedev)) {
- set_bit(DASD_CQR_SUPPRESS_FP, &cqr->flags);
- set_bit(DASD_CQR_SUPPRESS_IL, &cqr->flags);
set_bit(DASD_CQR_SUPPRESS_NRF, &cqr->flags);
+ set_bit(DASD_CQR_SUPPRESS_IT, &cqr->flags);
}
return cqr;
@@ -5706,36 +5703,32 @@ static void dasd_eckd_dump_sense(struct
{
u8 *sense = dasd_get_sense(irb);
- if (scsw_is_tm(&irb->scsw)) {
- /*
- * In some cases the 'File Protected' or 'Incorrect Length'
- * error might be expected and log messages shouldn't be written
- * then. Check if the according suppress bit is set.
- */
- if (sense && (sense[1] & SNS1_FILE_PROTECTED) &&
- test_bit(DASD_CQR_SUPPRESS_FP, &req->flags))
- return;
- if (scsw_cstat(&irb->scsw) == 0x40 &&
- test_bit(DASD_CQR_SUPPRESS_IL, &req->flags))
- return;
+ /*
+ * In some cases certain errors might be expected and
+ * log messages shouldn't be written then.
+ * Check if the according suppress bit is set.
+ */
+ if (sense && (sense[1] & SNS1_INV_TRACK_FORMAT) &&
+ !(sense[2] & SNS2_ENV_DATA_PRESENT) &&
+ test_bit(DASD_CQR_SUPPRESS_IT, &req->flags))
+ return;
- dasd_eckd_dump_sense_tcw(device, req, irb);
- } else {
- /*
- * In some cases the 'Command Reject' or 'No Record Found'
- * error might be expected and log messages shouldn't be
- * written then. Check if the according suppress bit is set.
- */
- if (sense && sense[0] & SNS0_CMD_REJECT &&
- test_bit(DASD_CQR_SUPPRESS_CR, &req->flags))
- return;
+ if (sense && sense[0] & SNS0_CMD_REJECT &&
+ test_bit(DASD_CQR_SUPPRESS_CR, &req->flags))
+ return;
- if (sense && sense[1] & SNS1_NO_REC_FOUND &&
- test_bit(DASD_CQR_SUPPRESS_NRF, &req->flags))
- return;
+ if (sense && sense[1] & SNS1_NO_REC_FOUND &&
+ test_bit(DASD_CQR_SUPPRESS_NRF, &req->flags))
+ return;
+ if (scsw_cstat(&irb->scsw) == 0x40 &&
+ test_bit(DASD_CQR_SUPPRESS_IL, &req->flags))
+ return;
+
+ if (scsw_is_tm(&irb->scsw))
+ dasd_eckd_dump_sense_tcw(device, req, irb);
+ else
dasd_eckd_dump_sense_ccw(device, req, irb);
- }
}
static int dasd_eckd_pm_freeze(struct dasd_device *device)
--- a/drivers/s390/block/dasd_int.h
+++ b/drivers/s390/block/dasd_int.h
@@ -226,7 +226,7 @@ struct dasd_ccw_req {
* The following flags are used to suppress output of certain errors.
*/
#define DASD_CQR_SUPPRESS_NRF 4 /* Suppress 'No Record Found' error */
-#define DASD_CQR_SUPPRESS_FP 5 /* Suppress 'File Protected' error*/
+#define DASD_CQR_SUPPRESS_IT 5 /* Suppress 'Invalid Track' error*/
#define DASD_CQR_SUPPRESS_IL 6 /* Suppress 'Incorrect Length' error */
#define DASD_CQR_SUPPRESS_CR 7 /* Suppress 'Command Reject' error */
Patches currently in stable-queue which might be from sth@xxxxxxxxxxxxx are
queue-5.4/s390-dasd-fix-error-recovery-leading-to-data-corruption-on-ese-devices.patch
