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drbd: log request sector offset and size for IO errors 

Signed-off-by: Philipp Reisner <philipp.reisner@linbit.com>
Signed-off-by: Lars Ellenberg <lars.ellenberg@linbit.com>
This commit is contained in:
Lars Ellenberg 2012-09-27 15:19:38 +02:00 committed by Philipp Reisner
parent edc9f5eb7a
commit 42839f6536
1 changed files with 18 additions and 1 deletions
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19
drivers/block/drbd/drbd_req.c
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@ -425,6 +425,20 @@ static void mod_rq_state(struct drbd_request *req, struct bio_and_error *m,
kref_sub(&req->kref, k_put, drbd_req_destroy);
}
static void drbd_report_io_error(struct drbd_conf *mdev, struct drbd_request *req)
{
char b[BDEVNAME_SIZE];
if (!__ratelimit(&drbd_ratelimit_state))
return;
dev_warn(DEV, "local %s IO error sector %llu+%u on %s\n",
(req->rq_state & RQ_WRITE) ? "WRITE" : "READ",
(unsigned long long)req->i.sector,
req->i.size >> 9,
bdevname(mdev->ldev->backing_bdev, b));
}
/* obviously this could be coded as many single functions
* instead of one huge switch,
* or by putting the code directly in the respective locations
@ -493,12 +507,14 @@ int __req_mod(struct drbd_request *req, enum drbd_req_event what,
break;
case WRITE_COMPLETED_WITH_ERROR:
drbd_report_io_error(mdev, req);
__drbd_chk_io_error(mdev, DRBD_WRITE_ERROR);
mod_rq_state(req, m, RQ_LOCAL_PENDING, RQ_LOCAL_COMPLETED);
break;
case READ_COMPLETED_WITH_ERROR:
drbd_set_out_of_sync(mdev, req->i.sector, req->i.size);
drbd_report_io_error(mdev, req);
__drbd_chk_io_error(mdev, DRBD_READ_ERROR);
/* fall through. */
case READ_AHEAD_COMPLETED_WITH_ERROR:
@ -1108,7 +1124,8 @@ void __drbd_make_request(struct drbd_conf *mdev, struct bio *bio, unsigned long
} else if (no_remote) {
nodata:
if (__ratelimit(&drbd_ratelimit_state))
dev_err(DEV, "IO ERROR: neither local nor remote disk\n");
dev_err(DEV, "IO ERROR: neither local nor remote data, sector %llu+%u\n",
(unsigned long long)req->i.sector, req->i.size >> 9);
/* A write may have been queued for send_oos, however.
* So we can not simply free it, we must go through drbd_req_put_completion_ref() */
}