aboutsummaryrefslogtreecommitdiffstats
path: root/drivers/md/raid0.c
diff options
context:
space:
mode:
Diffstat (limited to 'drivers/md/raid0.c')
-rw-r--r--drivers/md/raid0.c107
1 files changed, 59 insertions, 48 deletions
diff --git a/drivers/md/raid0.c b/drivers/md/raid0.c
index 258986a2699d..a162fedeb51a 100644
--- a/drivers/md/raid0.c
+++ b/drivers/md/raid0.c
@@ -21,6 +21,7 @@
#include <linux/seq_file.h>
#include <linux/module.h>
#include <linux/slab.h>
+#include <trace/events/block.h>
#include "md.h"
#include "raid0.h"
#include "raid5.h"
@@ -51,20 +52,21 @@ static void dump_zones(struct mddev *mddev)
char b[BDEVNAME_SIZE];
struct r0conf *conf = mddev->private;
int raid_disks = conf->strip_zone[0].nb_dev;
- printk(KERN_INFO "md: RAID0 configuration for %s - %d zone%s\n",
- mdname(mddev),
- conf->nr_strip_zones, conf->nr_strip_zones==1?"":"s");
+ pr_debug("md: RAID0 configuration for %s - %d zone%s\n",
+ mdname(mddev),
+ conf->nr_strip_zones, conf->nr_strip_zones==1?"":"s");
for (j = 0; j < conf->nr_strip_zones; j++) {
- printk(KERN_INFO "md: zone%d=[", j);
+ char line[200];
+ int len = 0;
+
for (k = 0; k < conf->strip_zone[j].nb_dev; k++)
- printk(KERN_CONT "%s%s", k?"/":"",
- bdevname(conf->devlist[j*raid_disks
- + k]->bdev, b));
- printk(KERN_CONT "]\n");
+ len += snprintf(line+len, 200-len, "%s%s", k?"/":"",
+ bdevname(conf->devlist[j*raid_disks
+ + k]->bdev, b));
+ pr_debug("md: zone%d=[%s]\n", j, line);
zone_size = conf->strip_zone[j].zone_end - zone_start;
- printk(KERN_INFO " zone-offset=%10lluKB, "
- "device-offset=%10lluKB, size=%10lluKB\n",
+ pr_debug(" zone-offset=%10lluKB, device-offset=%10lluKB, size=%10lluKB\n",
(unsigned long long)zone_start>>1,
(unsigned long long)conf->strip_zone[j].dev_start>>1,
(unsigned long long)zone_size>>1);
@@ -142,9 +144,9 @@ static int create_strip_zones(struct mddev *mddev, struct r0conf **private_conf)
* chunk size is a multiple of that sector size
*/
if ((mddev->chunk_sectors << 9) % blksize) {
- printk(KERN_ERR "md/raid0:%s: chunk_size of %d not multiple of block size %d\n",
- mdname(mddev),
- mddev->chunk_sectors << 9, blksize);
+ pr_warn("md/raid0:%s: chunk_size of %d not multiple of block size %d\n",
+ mdname(mddev),
+ mddev->chunk_sectors << 9, blksize);
err = -EINVAL;
goto abort;
}
@@ -186,19 +188,18 @@ static int create_strip_zones(struct mddev *mddev, struct r0conf **private_conf)
}
if (j < 0) {
- printk(KERN_ERR
- "md/raid0:%s: remove inactive devices before converting to RAID0\n",
- mdname(mddev));
+ pr_warn("md/raid0:%s: remove inactive devices before converting to RAID0\n",
+ mdname(mddev));
goto abort;
}
if (j >= mddev->raid_disks) {
- printk(KERN_ERR "md/raid0:%s: bad disk number %d - "
- "aborting!\n", mdname(mddev), j);
+ pr_warn("md/raid0:%s: bad disk number %d - aborting!\n",
+ mdname(mddev), j);
goto abort;
}
if (dev[j]) {
- printk(KERN_ERR "md/raid0:%s: multiple devices for %d - "
- "aborting!\n", mdname(mddev), j);
+ pr_warn("md/raid0:%s: multiple devices for %d - aborting!\n",
+ mdname(mddev), j);
goto abort;
}
dev[j] = rdev1;
@@ -208,8 +209,8 @@ static int create_strip_zones(struct mddev *mddev, struct r0conf **private_conf)
cnt++;
}
if (cnt != mddev->raid_disks) {
- printk(KERN_ERR "md/raid0:%s: too few disks (%d of %d) - "
- "aborting!\n", mdname(mddev), cnt, mddev->raid_disks);
+ pr_warn("md/raid0:%s: too few disks (%d of %d) - aborting!\n",
+ mdname(mddev), cnt, mddev->raid_disks);
goto abort;
}
zone->nb_dev = cnt;
@@ -357,8 +358,7 @@ static int raid0_run(struct mddev *mddev)
int ret;
if (mddev->chunk_sectors == 0) {
- printk(KERN_ERR "md/raid0:%s: chunk size must be set.\n",
- mdname(mddev));
+ pr_warn("md/raid0:%s: chunk size must be set.\n", mdname(mddev));
return -EINVAL;
}
if (md_check_no_bitmap(mddev))
@@ -399,9 +399,9 @@ static int raid0_run(struct mddev *mddev)
/* calculate array device size */
md_set_array_sectors(mddev, raid0_size(mddev, 0, 0));
- printk(KERN_INFO "md/raid0:%s: md_size is %llu sectors.\n",
- mdname(mddev),
- (unsigned long long)mddev->array_sectors);
+ pr_debug("md/raid0:%s: md_size is %llu sectors.\n",
+ mdname(mddev),
+ (unsigned long long)mddev->array_sectors);
if (mddev->queue) {
/* calculate the max read-ahead size.
@@ -464,7 +464,8 @@ static void raid0_make_request(struct mddev *mddev, struct bio *bio)
}
do {
- sector_t sector = bio->bi_iter.bi_sector;
+ sector_t bio_sector = bio->bi_iter.bi_sector;
+ sector_t sector = bio_sector;
unsigned chunk_sects = mddev->chunk_sectors;
unsigned sectors = chunk_sects -
@@ -473,7 +474,7 @@ static void raid0_make_request(struct mddev *mddev, struct bio *bio)
: sector_div(sector, chunk_sects));
/* Restore due to sector_div */
- sector = bio->bi_iter.bi_sector;
+ sector = bio_sector;
if (sectors < bio_sectors(bio)) {
split = bio_split(bio, sectors, GFP_NOIO, fs_bio_set);
@@ -492,8 +493,13 @@ static void raid0_make_request(struct mddev *mddev, struct bio *bio)
!blk_queue_discard(bdev_get_queue(split->bi_bdev)))) {
/* Just ignore it */
bio_endio(split);
- } else
+ } else {
+ if (mddev->gendisk)
+ trace_block_bio_remap(bdev_get_queue(split->bi_bdev),
+ split, disk_devt(mddev->gendisk),
+ bio_sector);
generic_make_request(split);
+ }
} while (split != bio);
}
@@ -509,17 +515,17 @@ static void *raid0_takeover_raid45(struct mddev *mddev)
struct r0conf *priv_conf;
if (mddev->degraded != 1) {
- printk(KERN_ERR "md/raid0:%s: raid5 must be degraded! Degraded disks: %d\n",
- mdname(mddev),
- mddev->degraded);
+ pr_warn("md/raid0:%s: raid5 must be degraded! Degraded disks: %d\n",
+ mdname(mddev),
+ mddev->degraded);
return ERR_PTR(-EINVAL);
}
rdev_for_each(rdev, mddev) {
/* check slot number for a disk */
if (rdev->raid_disk == mddev->raid_disks-1) {
- printk(KERN_ERR "md/raid0:%s: raid5 must have missing parity disk!\n",
- mdname(mddev));
+ pr_warn("md/raid0:%s: raid5 must have missing parity disk!\n",
+ mdname(mddev));
return ERR_PTR(-EINVAL);
}
rdev->sectors = mddev->dev_sectors;
@@ -533,8 +539,11 @@ static void *raid0_takeover_raid45(struct mddev *mddev)
mddev->delta_disks = -1;
/* make sure it will be not marked as dirty */
mddev->recovery_cp = MaxSector;
+ clear_bit(MD_HAS_JOURNAL, &mddev->flags);
+ clear_bit(MD_JOURNAL_CLEAN, &mddev->flags);
create_strip_zones(mddev, &priv_conf);
+
return priv_conf;
}
@@ -549,19 +558,19 @@ static void *raid0_takeover_raid10(struct mddev *mddev)
* - all mirrors must be already degraded
*/
if (mddev->layout != ((1 << 8) + 2)) {
- printk(KERN_ERR "md/raid0:%s:: Raid0 cannot takeover layout: 0x%x\n",
- mdname(mddev),
- mddev->layout);
+ pr_warn("md/raid0:%s:: Raid0 cannot takeover layout: 0x%x\n",
+ mdname(mddev),
+ mddev->layout);
return ERR_PTR(-EINVAL);
}
if (mddev->raid_disks & 1) {
- printk(KERN_ERR "md/raid0:%s: Raid0 cannot takeover Raid10 with odd disk number.\n",
- mdname(mddev));
+ pr_warn("md/raid0:%s: Raid0 cannot takeover Raid10 with odd disk number.\n",
+ mdname(mddev));
return ERR_PTR(-EINVAL);
}
if (mddev->degraded != (mddev->raid_disks>>1)) {
- printk(KERN_ERR "md/raid0:%s: All mirrors must be already degraded!\n",
- mdname(mddev));
+ pr_warn("md/raid0:%s: All mirrors must be already degraded!\n",
+ mdname(mddev));
return ERR_PTR(-EINVAL);
}
@@ -574,6 +583,7 @@ static void *raid0_takeover_raid10(struct mddev *mddev)
mddev->degraded = 0;
/* make sure it will be not marked as dirty */
mddev->recovery_cp = MaxSector;
+ clear_bit(MD_FAILFAST_SUPPORTED, &mddev->flags);
create_strip_zones(mddev, &priv_conf);
return priv_conf;
@@ -588,7 +598,7 @@ static void *raid0_takeover_raid1(struct mddev *mddev)
* - (N - 1) mirror drives must be already faulty
*/
if ((mddev->raid_disks - 1) != mddev->degraded) {
- printk(KERN_ERR "md/raid0:%s: (N - 1) mirrors drives must be already faulty!\n",
+ pr_err("md/raid0:%s: (N - 1) mirrors drives must be already faulty!\n",
mdname(mddev));
return ERR_PTR(-EINVAL);
}
@@ -616,6 +626,7 @@ static void *raid0_takeover_raid1(struct mddev *mddev)
mddev->raid_disks = 1;
/* make sure it will be not marked as dirty */
mddev->recovery_cp = MaxSector;
+ clear_bit(MD_FAILFAST_SUPPORTED, &mddev->flags);
create_strip_zones(mddev, &priv_conf);
return priv_conf;
@@ -631,8 +642,8 @@ static void *raid0_takeover(struct mddev *mddev)
*/
if (mddev->bitmap) {
- printk(KERN_ERR "md/raid0: %s: cannot takeover array with bitmap\n",
- mdname(mddev));
+ pr_warn("md/raid0: %s: cannot takeover array with bitmap\n",
+ mdname(mddev));
return ERR_PTR(-EBUSY);
}
if (mddev->level == 4)
@@ -642,8 +653,8 @@ static void *raid0_takeover(struct mddev *mddev)
if (mddev->layout == ALGORITHM_PARITY_N)
return raid0_takeover_raid45(mddev);
- printk(KERN_ERR "md/raid0:%s: Raid can only takeover Raid5 with layout: %d\n",
- mdname(mddev), ALGORITHM_PARITY_N);
+ pr_warn("md/raid0:%s: Raid can only takeover Raid5 with layout: %d\n",
+ mdname(mddev), ALGORITHM_PARITY_N);
}
if (mddev->level == 10)
@@ -652,7 +663,7 @@ static void *raid0_takeover(struct mddev *mddev)
if (mddev->level == 1)
return raid0_takeover_raid1(mddev);
- printk(KERN_ERR "Takeover from raid%i to raid0 not supported\n",
+ pr_warn("Takeover from raid%i to raid0 not supported\n",
mddev->level);
return ERR_PTR(-EINVAL);
Copyright © 1996 – 2023 Jason A. Donenfeld. All Rights Reverse Engineered.