This is generally useful, but particularly helps see if it is
the same sector that always needs correcting, or different ones.
Signed-off-by: Neil Brown <[email protected]>
### Diffstat output
./drivers/md/raid1.c | 3 +++
./drivers/md/raid10.c | 4 ++++
./drivers/md/raid5.c | 30 +++++++++++++++++++++++-------
3 files changed, 30 insertions(+), 7 deletions(-)
diff .prev/drivers/md/raid1.c ./drivers/md/raid1.c
--- .prev/drivers/md/raid1.c 2006-06-27 12:17:33.000000000 +1000
+++ ./drivers/md/raid1.c 2006-06-27 12:17:34.000000000 +1000
@@ -1509,6 +1509,9 @@ static void raid1d(mddev_t *mddev)
s<<9, conf->tmppage, READ) == 0)
/* Well, this device is dead */
md_error(mddev, rdev);
+ else
+ printk(KERN_INFO "raid1:%s: read error corrected (%d sectors at %llu on %s)\n",
+ mdname(mddev), s, sect + rdev->data_offset, bdevname(rdev->bdev, b));
}
}
} else {
diff .prev/drivers/md/raid10.c ./drivers/md/raid10.c
--- .prev/drivers/md/raid10.c 2006-06-27 12:15:15.000000000 +1000
+++ ./drivers/md/raid10.c 2006-06-27 12:17:34.000000000 +1000
@@ -1492,6 +1492,10 @@ static void raid10d(mddev_t *mddev)
s<<9, conf->tmppage, READ) == 0)
/* Well, this device is dead */
md_error(mddev, rdev);
+ else
+ printk(KERN_INFO "raid10:%s: read error corrected (%d sectors at %llu on %s)\n",
+ mdname(mddev), s, sect+rdev->data_offset, bdevname(rdev->bdev, b));
+
rdev_dec_pending(rdev, mddev);
rcu_read_lock();
}
diff .prev/drivers/md/raid5.c ./drivers/md/raid5.c
--- .prev/drivers/md/raid5.c 2006-06-27 12:17:34.000000000 +1000
+++ ./drivers/md/raid5.c 2006-06-27 12:17:34.000000000 +1000
@@ -524,6 +524,8 @@ static int raid5_end_read_request(struct
raid5_conf_t *conf = sh->raid_conf;
int disks = sh->disks, i;
int uptodate = test_bit(BIO_UPTODATE, &bi->bi_flags);
+ char b[BDEVNAME_SIZE];
+ mdk_rdev_t *rdev;
if (bi->bi_size)
return 1;
@@ -571,25 +573,39 @@ static int raid5_end_read_request(struct
set_bit(R5_UPTODATE, &sh->dev[i].flags);
#endif
if (test_bit(R5_ReadError, &sh->dev[i].flags)) {
- printk(KERN_INFO "raid5: read error corrected!!\n");
+ rdev = conf->disks[i].rdev;
+ printk(KERN_INFO "raid5:%s: read error corrected (%lu sectors at %llu on %s)\n",
+ mdname(conf->mddev), STRIPE_SECTORS,
+ (unsigned long long)sh->sector + rdev->data_offset,
+ bdevname(rdev->bdev, b));
clear_bit(R5_ReadError, &sh->dev[i].flags);
clear_bit(R5_ReWrite, &sh->dev[i].flags);
}
if (atomic_read(&conf->disks[i].rdev->read_errors))
atomic_set(&conf->disks[i].rdev->read_errors, 0);
} else {
+ const char *bdn = bdevname(conf->disks[i].rdev->bdev, b);
int retry = 0;
+ rdev = conf->disks[i].rdev;
+
clear_bit(R5_UPTODATE, &sh->dev[i].flags);
- atomic_inc(&conf->disks[i].rdev->read_errors);
+ atomic_inc(&rdev->read_errors);
if (conf->mddev->degraded)
- printk(KERN_WARNING "raid5: read error not correctable.\n");
+ printk(KERN_WARNING "raid5:%s: read error not correctable (sector %llu on %s).\n",
+ mdname(conf->mddev),
+ (unsigned long long)sh->sector + rdev->data_offset,
+ bdn);
else if (test_bit(R5_ReWrite, &sh->dev[i].flags))
/* Oh, no!!! */
- printk(KERN_WARNING "raid5: read error NOT corrected!!\n");
- else if (atomic_read(&conf->disks[i].rdev->read_errors)
+ printk(KERN_WARNING "raid5:%s: read error NOT corrected!! (sector %llu on %s).\n",
+ mdname(conf->mddev),
+ (unsigned long long)sh->sector + rdev->data_offset,
+ bdn);
+ else if (atomic_read(&rdev->read_errors)
> conf->max_nr_stripes)
printk(KERN_WARNING
- "raid5: Too many read errors, failing device.\n");
+ "raid5:%s: Too many read errors, failing device %s.\n",
+ mdname(conf->mddev), bdn);
else
retry = 1;
if (retry)
@@ -597,7 +613,7 @@ static int raid5_end_read_request(struct
else {
clear_bit(R5_ReadError, &sh->dev[i].flags);
clear_bit(R5_ReWrite, &sh->dev[i].flags);
- md_error(conf->mddev, conf->disks[i].rdev);
+ md_error(conf->mddev, rdev);
}
}
rdev_dec_pending(conf->disks[i].rdev, conf->mddev);
-
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