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-rw-r--r--Documentation/md/md-cluster.txt3
-rw-r--r--MAINTAINERS7
-rw-r--r--block/badblocks.c2
-rw-r--r--drivers/md/Kconfig5
-rw-r--r--drivers/md/Makefile5
-rw-r--r--drivers/md/dm-raid.c12
-rw-r--r--drivers/md/md-bitmap.c (renamed from drivers/md/bitmap.c)27
-rw-r--r--drivers/md/md-bitmap.h (renamed from drivers/md/bitmap.h)0
-rw-r--r--drivers/md/md-cluster.c12
-rw-r--r--drivers/md/md-faulty.c (renamed from drivers/md/faulty.c)0
-rw-r--r--drivers/md/md-linear.c (renamed from drivers/md/linear.c)2
-rw-r--r--drivers/md/md-linear.h (renamed from drivers/md/linear.h)0
-rw-r--r--drivers/md/md-multipath.c (renamed from drivers/md/multipath.c)4
-rw-r--r--drivers/md/md-multipath.h (renamed from drivers/md/multipath.h)0
-rw-r--r--drivers/md/md.c147
-rw-r--r--drivers/md/md.h20
-rw-r--r--drivers/md/raid0.c2
-rw-r--r--drivers/md/raid1.c78
-rw-r--r--drivers/md/raid10.c169
-rw-r--r--drivers/md/raid10.h6
-rw-r--r--drivers/md/raid5-cache.c44
-rw-r--r--drivers/md/raid5-log.h2
-rw-r--r--drivers/md/raid5-ppl.c6
-rw-r--r--drivers/md/raid5.c79
24 files changed, 409 insertions, 223 deletions
diff --git a/Documentation/md/md-cluster.txt b/Documentation/md/md-cluster.txt
index 82ee51604e9a..e1055f105cf5 100644
--- a/Documentation/md/md-cluster.txt
+++ b/Documentation/md/md-cluster.txt
@@ -1,4 +1,5 @@
-The cluster MD is a shared-device RAID for a cluster.
+The cluster MD is a shared-device RAID for a cluster, it supports
+two levels: raid1 and raid10 (limited support).
1. On-disk format
diff --git a/MAINTAINERS b/MAINTAINERS
index ba3d8c197d92..8604cf64a169 100644
--- a/MAINTAINERS
+++ b/MAINTAINERS
@@ -4103,6 +4103,8 @@ T: git git://git.kernel.org/pub/scm/linux/kernel/git/device-mapper/linux-dm.git
T: quilt http://people.redhat.com/agk/patches/linux/editing/
S: Maintained
F: Documentation/device-mapper/
+F: drivers/md/Makefile
+F: drivers/md/Kconfig
F: drivers/md/dm*
F: drivers/md/persistent-data/
F: include/linux/device-mapper.h
@@ -12487,7 +12489,10 @@ M: Shaohua Li <shli@kernel.org>
L: linux-raid@vger.kernel.org
T: git git://git.kernel.org/pub/scm/linux/kernel/git/shli/md.git
S: Supported
-F: drivers/md/
+F: drivers/md/Makefile
+F: drivers/md/Kconfig
+F: drivers/md/md*
+F: drivers/md/raid*
F: include/linux/raid/
F: include/uapi/linux/raid/
diff --git a/block/badblocks.c b/block/badblocks.c
index 43c71166e1e2..91f7bcf979d3 100644
--- a/block/badblocks.c
+++ b/block/badblocks.c
@@ -178,7 +178,7 @@ int badblocks_set(struct badblocks *bb, sector_t s, int sectors,
if (bb->shift < 0)
/* badblocks are disabled */
- return 0;
+ return 1;
if (bb->shift) {
/* round the start down, and the end up */
diff --git a/drivers/md/Kconfig b/drivers/md/Kconfig
index 4a249ee86364..83b9362be09c 100644
--- a/drivers/md/Kconfig
+++ b/drivers/md/Kconfig
@@ -178,7 +178,7 @@ config MD_FAULTY
config MD_CLUSTER
- tristate "Cluster Support for MD (EXPERIMENTAL)"
+ tristate "Cluster Support for MD"
depends on BLK_DEV_MD
depends on DLM
default n
@@ -188,7 +188,8 @@ config MD_CLUSTER
nodes in the cluster can access the MD devices simultaneously.
This brings the redundancy (and uptime) of RAID levels across the
- nodes of the cluster.
+ nodes of the cluster. Currently, it can work with raid1 and raid10
+ (limited support).
If unsure, say N.
diff --git a/drivers/md/Makefile b/drivers/md/Makefile
index e94b6f9be941..f701bb211783 100644
--- a/drivers/md/Makefile
+++ b/drivers/md/Makefile
@@ -19,9 +19,12 @@ dm-cache-y += dm-cache-target.o dm-cache-metadata.o dm-cache-policy.o \
dm-cache-smq-y += dm-cache-policy-smq.o
dm-era-y += dm-era-target.o
dm-verity-y += dm-verity-target.o
-md-mod-y += md.o bitmap.o
+md-mod-y += md.o md-bitmap.o
raid456-y += raid5.o raid5-cache.o raid5-ppl.o
dm-zoned-y += dm-zoned-target.o dm-zoned-metadata.o dm-zoned-reclaim.o
+linear-y += md-linear.o
+multipath-y += md-multipath.o
+faulty-y += md-faulty.o
# Note: link order is important. All raid personalities
# and must come before md.o, as they each initialise
diff --git a/drivers/md/dm-raid.c b/drivers/md/dm-raid.c
index a25eebd98996..366c625b9591 100644
--- a/drivers/md/dm-raid.c
+++ b/drivers/md/dm-raid.c
@@ -12,7 +12,7 @@
#include "raid1.h"
#include "raid5.h"
#include "raid10.h"
-#include "bitmap.h"
+#include "md-bitmap.h"
#include <linux/device-mapper.h>
@@ -3630,8 +3630,11 @@ static void raid_postsuspend(struct dm_target *ti)
{
struct raid_set *rs = ti->private;
- if (!test_and_set_bit(RT_FLAG_RS_SUSPENDED, &rs->runtime_flags))
+ if (!test_and_set_bit(RT_FLAG_RS_SUSPENDED, &rs->runtime_flags)) {
+ mddev_lock_nointr(&rs->md);
mddev_suspend(&rs->md);
+ mddev_unlock(&rs->md);
+ }
rs->md.ro = 1;
}
@@ -3888,8 +3891,11 @@ static void raid_resume(struct dm_target *ti)
if (!(rs->ctr_flags & RESUME_STAY_FROZEN_FLAGS))
clear_bit(MD_RECOVERY_FROZEN, &mddev->recovery);
- if (test_and_clear_bit(RT_FLAG_RS_SUSPENDED, &rs->runtime_flags))
+ if (test_and_clear_bit(RT_FLAG_RS_SUSPENDED, &rs->runtime_flags)) {
+ mddev_lock_nointr(mddev);
mddev_resume(mddev);
+ mddev_unlock(mddev);
+ }
}
static struct target_type raid_target = {
diff --git a/drivers/md/bitmap.c b/drivers/md/md-bitmap.c
index 4d8ed74efadf..239c7bb3929b 100644
--- a/drivers/md/bitmap.c
+++ b/drivers/md/md-bitmap.c
@@ -29,7 +29,7 @@
#include <linux/seq_file.h>
#include <trace/events/block.h>
#include "md.h"
-#include "bitmap.h"
+#include "md-bitmap.h"
static inline char *bmname(struct bitmap *bitmap)
{
@@ -459,7 +459,11 @@ void bitmap_update_sb(struct bitmap *bitmap)
/* rocking back to read-only */
bitmap->events_cleared = bitmap->mddev->events;
sb->events_cleared = cpu_to_le64(bitmap->events_cleared);
- sb->state = cpu_to_le32(bitmap->flags);
+ /*
+ * clear BITMAP_WRITE_ERROR bit to protect against the case that
+ * a bitmap write error occurred but the later writes succeeded.
+ */
+ sb->state = cpu_to_le32(bitmap->flags & ~BIT(BITMAP_WRITE_ERROR));
/* Just in case these have been changed via sysfs: */
sb->daemon_sleep = cpu_to_le32(bitmap->mddev->bitmap_info.daemon_sleep/HZ);
sb->write_behind = cpu_to_le32(bitmap->mddev->bitmap_info.max_write_behind);
@@ -625,7 +629,7 @@ re_read:
err = read_sb_page(bitmap->mddev,
offset,
sb_page,
- 0, PAGE_SIZE);
+ 0, sizeof(bitmap_super_t));
}
if (err)
return err;
@@ -1816,6 +1820,12 @@ struct bitmap *bitmap_create(struct mddev *mddev, int slot)
BUG_ON(file && mddev->bitmap_info.offset);
+ if (test_bit(MD_HAS_JOURNAL, &mddev->flags)) {
+ pr_notice("md/raid:%s: array with journal cannot have bitmap\n",
+ mdname(mddev));
+ return ERR_PTR(-EBUSY);
+ }
+
bitmap = kzalloc(sizeof(*bitmap), GFP_KERNEL);
if (!bitmap)
return ERR_PTR(-ENOMEM);
@@ -2123,7 +2133,7 @@ int bitmap_resize(struct bitmap *bitmap, sector_t blocks,
if (store.sb_page && bitmap->storage.sb_page)
memcpy(page_address(store.sb_page),
page_address(bitmap->storage.sb_page),
- PAGE_SIZE);
+ sizeof(bitmap_super_t));
bitmap_file_unmap(&bitmap->storage);
bitmap->storage = store;
@@ -2152,6 +2162,7 @@ int bitmap_resize(struct bitmap *bitmap, sector_t blocks,
for (k = 0; k < page; k++) {
kfree(new_bp[k].map);
}
+ kfree(new_bp);
/* restore some fields from old_counts */
bitmap->counts.bp = old_counts.bp;
@@ -2202,6 +2213,14 @@ int bitmap_resize(struct bitmap *bitmap, sector_t blocks,
block += old_blocks;
}
+ if (bitmap->counts.bp != old_counts.bp) {
+ unsigned long k;
+ for (k = 0; k < old_counts.pages; k++)
+ if (!old_counts.bp[k].hijacked)
+ kfree(old_counts.bp[k].map);
+ kfree(old_counts.bp);
+ }
+
if (!init) {
int i;
while (block < (chunks << chunkshift)) {
diff --git a/drivers/md/bitmap.h b/drivers/md/md-bitmap.h
index 5df35ca90f58..5df35ca90f58 100644
--- a/drivers/md/bitmap.h
+++ b/drivers/md/md-bitmap.h
diff --git a/drivers/md/md-cluster.c b/drivers/md/md-cluster.c
index 03082e17c65c..79bfbc840385 100644
--- a/drivers/md/md-cluster.c
+++ b/drivers/md/md-cluster.c
@@ -15,7 +15,7 @@
#include <linux/sched.h>
#include <linux/raid/md_p.h>
#include "md.h"
-#include "bitmap.h"
+#include "md-bitmap.h"
#include "md-cluster.h"
#define LVB_SIZE 64
@@ -442,10 +442,11 @@ static void __remove_suspend_info(struct md_cluster_info *cinfo, int slot)
static void remove_suspend_info(struct mddev *mddev, int slot)
{
struct md_cluster_info *cinfo = mddev->cluster_info;
+ mddev->pers->quiesce(mddev, 1);
spin_lock_irq(&cinfo->suspend_lock);
__remove_suspend_info(cinfo, slot);
spin_unlock_irq(&cinfo->suspend_lock);
- mddev->pers->quiesce(mddev, 2);
+ mddev->pers->quiesce(mddev, 0);
}
@@ -492,13 +493,12 @@ static void process_suspend_info(struct mddev *mddev,
s->lo = lo;
s->hi = hi;
mddev->pers->quiesce(mddev, 1);
- mddev->pers->quiesce(mddev, 0);
spin_lock_irq(&cinfo->suspend_lock);
/* Remove existing entry (if exists) before adding */
__remove_suspend_info(cinfo, slot);
list_add(&s->list, &cinfo->suspend_list);
spin_unlock_irq(&cinfo->suspend_lock);
- mddev->pers->quiesce(mddev, 2);
+ mddev->pers->quiesce(mddev, 0);
}
static void process_add_new_disk(struct mddev *mddev, struct cluster_msg *cmsg)
@@ -1094,7 +1094,7 @@ static void metadata_update_cancel(struct mddev *mddev)
/*
* return 0 if all the bitmaps have the same sync_size
*/
-int cluster_check_sync_size(struct mddev *mddev)
+static int cluster_check_sync_size(struct mddev *mddev)
{
int i, rv;
bitmap_super_t *sb;
@@ -1478,7 +1478,7 @@ static struct md_cluster_operations cluster_ops = {
static int __init cluster_init(void)
{
- pr_warn("md-cluster: EXPERIMENTAL. Use with caution\n");
+ pr_warn("md-cluster: support raid1 and raid10 (limited support)\n");
pr_info("Registering Cluster MD functions\n");
register_md_cluster_operations(&cluster_ops, THIS_MODULE);
return 0;
diff --git a/drivers/md/faulty.c b/drivers/md/md-faulty.c
index 38264b38420f..38264b38420f 100644
--- a/drivers/md/faulty.c
+++ b/drivers/md/md-faulty.c
diff --git a/drivers/md/linear.c b/drivers/md/md-linear.c
index c464fb48039a..773fc70dced7 100644
--- a/drivers/md/linear.c
+++ b/drivers/md/md-linear.c
@@ -23,7 +23,7 @@
#include <linux/slab.h>
#include <trace/events/block.h>
#include "md.h"
-#include "linear.h"
+#include "md-linear.h"
/*
* find which device holds a particular offset
diff --git a/drivers/md/linear.h b/drivers/md/md-linear.h
index 8381d651d4ed..8381d651d4ed 100644
--- a/drivers/md/linear.h
+++ b/drivers/md/md-linear.h
diff --git a/drivers/md/multipath.c b/drivers/md/md-multipath.c
index b68e0666b9b0..e40065bdbfc8 100644
--- a/drivers/md/multipath.c
+++ b/drivers/md/md-multipath.c
@@ -25,7 +25,7 @@
#include <linux/seq_file.h>
#include <linux/slab.h>
#include "md.h"
-#include "multipath.h"
+#include "md-multipath.h"
#define MAX_WORK_PER_DISK 128
@@ -243,7 +243,6 @@ static void print_multipath_conf (struct mpconf *conf)
static int multipath_add_disk(struct mddev *mddev, struct md_rdev *rdev)
{
struct mpconf *conf = mddev->private;
- struct request_queue *q;
int err = -EEXIST;
int path;
struct multipath_info *p;
@@ -257,7 +256,6 @@ static int multipath_add_disk(struct mddev *mddev, struct md_rdev *rdev)
for (path = first; path <= last; path++)
if ((p=conf->multipaths+path)->rdev == NULL) {
- q = rdev->bdev->bd_disk->queue;
disk_stack_limits(mddev->gendisk, rdev->bdev,
rdev->data_offset << 9);
diff --git a/drivers/md/multipath.h b/drivers/md/md-multipath.h
index 0adb941f485a..0adb941f485a 100644
--- a/drivers/md/multipath.h
+++ b/drivers/md/md-multipath.h
diff --git a/drivers/md/md.c b/drivers/md/md.c
index 447ddcbc9566..09c3af3dcdca 100644
--- a/drivers/md/md.c
+++ b/drivers/md/md.c
@@ -69,7 +69,7 @@
#include <trace/events/block.h>
#include "md.h"
-#include "bitmap.h"
+#include "md-bitmap.h"
#include "md-cluster.h"
#ifndef MODULE
@@ -266,16 +266,31 @@ static DEFINE_SPINLOCK(all_mddevs_lock);
* call has finished, the bio has been linked into some internal structure
* and so is visible to ->quiesce(), so we don't need the refcount any more.
*/
+static bool is_suspended(struct mddev *mddev, struct bio *bio)
+{
+ if (mddev->suspended)
+ return true;
+ if (bio_data_dir(bio) != WRITE)
+ return false;
+ if (mddev->suspend_lo >= mddev->suspend_hi)
+ return false;
+ if (bio->bi_iter.bi_sector >= mddev->suspend_hi)
+ return false;
+ if (bio_end_sector(bio) < mddev->suspend_lo)
+ return false;
+ return true;
+}
+
void md_handle_request(struct mddev *mddev, struct bio *bio)
{
check_suspended:
rcu_read_lock();
- if (mddev->suspended) {
+ if (is_suspended(mddev, bio)) {
DEFINE_WAIT(__wait);
for (;;) {
prepare_to_wait(&mddev->sb_wait, &__wait,
TASK_UNINTERRUPTIBLE);
- if (!mddev->suspended)
+ if (!is_suspended(mddev, bio))
break;
rcu_read_unlock();
schedule();
@@ -344,12 +359,17 @@ static blk_qc_t md_make_request(struct request_queue *q, struct bio *bio)
void mddev_suspend(struct mddev *mddev)
{
WARN_ON_ONCE(mddev->thread && current == mddev->thread->tsk);
+ lockdep_assert_held(&mddev->reconfig_mutex);
if (mddev->suspended++)
return;
synchronize_rcu();
wake_up(&mddev->sb_wait);
+ set_bit(MD_ALLOW_SB_UPDATE, &mddev->flags);
+ smp_mb__after_atomic();
wait_event(mddev->sb_wait, atomic_read(&mddev->active_io) == 0);
mddev->pers->quiesce(mddev, 1);
+ clear_bit_unlock(MD_ALLOW_SB_UPDATE, &mddev->flags);
+ wait_event(mddev->sb_wait, !test_bit(MD_UPDATING_SB, &mddev->flags));
del_timer_sync(&mddev->safemode_timer);
}
@@ -357,6 +377,7 @@ EXPORT_SYMBOL_GPL(mddev_suspend);
void mddev_resume(struct mddev *mddev)
{
+ lockdep_assert_held(&mddev->reconfig_mutex);
if (--mddev->suspended)
return;
wake_up(&mddev->sb_wait);
@@ -663,6 +684,7 @@ void mddev_unlock(struct mddev *mddev)
*/
spin_lock(&pers_lock);
md_wakeup_thread(mddev->thread);
+ wake_up(&mddev->sb_wait);
spin_unlock(&pers_lock);
}
EXPORT_SYMBOL_GPL(mddev_unlock);
@@ -2313,7 +2335,7 @@ static void export_array(struct mddev *mddev)
static bool set_in_sync(struct mddev *mddev)
{
- WARN_ON_ONCE(NR_CPUS != 1 && !spin_is_locked(&mddev->lock));
+ lockdep_assert_held(&mddev->lock);
if (!mddev->in_sync) {
mddev->sync_checkers++;
spin_unlock(&mddev->lock);
@@ -2432,10 +2454,18 @@ repeat:
}
}
- /* First make sure individual recovery_offsets are correct */
+ /*
+ * First make sure individual recovery_offsets are correct
+ * curr_resync_completed can only be used during recovery.
+ * During reshape/resync it might use array-addresses rather
+ * that device addresses.
+ */
rdev_for_each(rdev, mddev) {
if (rdev->raid_disk >= 0 &&
mddev->delta_disks >= 0 &&
+ test_bit(MD_RECOVERY_RUNNING, &mddev->recovery) &&
+ test_bit(MD_RECOVERY_RECOVER, &mddev->recovery) &&
+ !test_bit(MD_RECOVERY_RESHAPE, &mddev->recovery) &&
!test_bit(Journal, &rdev->flags) &&
!test_bit(In_sync, &rdev->flags) &&
mddev->curr_resync_completed > rdev->recovery_offset)
@@ -4824,7 +4854,7 @@ suspend_lo_show(struct mddev *mddev, char *page)
static ssize_t
suspend_lo_store(struct mddev *mddev, const char *buf, size_t len)
{
- unsigned long long old, new;
+ unsigned long long new;
int err;
err = kstrtoull(buf, 10, &new);
@@ -4840,16 +4870,10 @@ suspend_lo_store(struct mddev *mddev, const char *buf, size_t len)
if (mddev->pers == NULL ||
mddev->pers->quiesce == NULL)
goto unlock;
- old = mddev->suspend_lo;
+ mddev_suspend(mddev);
mddev->suspend_lo = new;
- if (new >= old)
- /* Shrinking suspended region */
- mddev->pers->quiesce(mddev, 2);
- else {
- /* Expanding suspended region - need to wait */
- mddev->pers->quiesce(mddev, 1);
- mddev->pers->quiesce(mddev, 0);
- }
+ mddev_resume(mddev);
+
err = 0;
unlock:
mddev_unlock(mddev);
@@ -4867,7 +4891,7 @@ suspend_hi_show(struct mddev *mddev, char *page)
static ssize_t
suspend_hi_store(struct mddev *mddev, const char *buf, size_t len)
{
- unsigned long long old, new;
+ unsigned long long new;
int err;
err = kstrtoull(buf, 10, &new);
@@ -4880,19 +4904,13 @@ suspend_hi_store(struct mddev *mddev, const char *buf, size_t len)
if (err)
return err;
err = -EINVAL;
- if (mddev->pers == NULL ||
- mddev->pers->quiesce == NULL)
+ if (mddev->pers == NULL)
goto unlock;
- old = mddev->suspend_hi;
+
+ mddev_suspend(mddev);
mddev->suspend_hi = new;
- if (new <= old)
- /* Shrinking suspended region */
- mddev->pers->quiesce(mddev, 2);
- else {
- /* Expanding suspended region - need to wait */
- mddev->pers->quiesce(mddev, 1);
- mddev->pers->quiesce(mddev, 0);
- }
+ mddev_resume(mddev);
+
err = 0;
unlock:
mddev_unlock(mddev);
@@ -5834,8 +5852,14 @@ void md_stop(struct mddev *mddev)
* This is called from dm-raid
*/
__md_stop(mddev);
- if (mddev->bio_set)
+ if (mddev->bio_set) {
bioset_free(mddev->bio_set);
+ mddev->bio_set = NULL;
+ }
+ if (mddev->sync_set) {
+ bioset_free(mddev->sync_set);
+ mddev->sync_set = NULL;
+ }
}
EXPORT_SYMBOL_GPL(md_stop);
@@ -6362,7 +6386,7 @@ static int add_new_disk(struct mddev *mddev, mdu_disk_info_t *info)
break;
}
}
- if (has_journal) {
+ if (has_journal || mddev->bitmap) {
export_rdev(rdev);
return -EBUSY;
}
@@ -6618,22 +6642,26 @@ static int set_bitmap_file(struct mddev *mddev, int fd)
return -ENOENT; /* cannot remove what isn't there */
err = 0;
if (mddev->pers) {
- mddev->pers->quiesce(mddev, 1);
if (fd >= 0) {
struct bitmap *bitmap;
bitmap = bitmap_create(mddev, -1);
+ mddev_suspend(mddev);
if (!IS_ERR(bitmap)) {
mddev->bitmap = bitmap;
err = bitmap_load(mddev);
} else
err = PTR_ERR(bitmap);
- }
- if (fd < 0 || err) {
+ if (err) {
+ bitmap_destroy(mddev);
+ fd = -1;
+ }
+ mddev_resume(mddev);
+ } else if (fd < 0) {
+ mddev_suspend(mddev);
bitmap_destroy(mddev);
- fd = -1; /* make sure to put the file */
+ mddev_resume(mddev);
}
- mddev->pers->quiesce(mddev, 0);
}
if (fd < 0) {
struct file *f = mddev->bitmap_info.file;
@@ -6735,7 +6763,7 @@ static int set_array_info(struct mddev *mddev, mdu_array_info_t *info)
void md_set_array_sectors(struct mddev *mddev, sector_t array_sectors)
{
- WARN(!mddev_is_locked(mddev), "%s: unlocked mddev!\n", __func__);
+ lockdep_assert_held(&mddev->reconfig_mutex);
if (mddev->external_size)
return;
@@ -6917,8 +6945,8 @@ static int update_array_info(struct mddev *mddev, mdu_array_info_t *info)
mddev->bitmap_info.default_offset;
mddev->bitmap_info.space =
mddev->bitmap_info.default_space;
- mddev->pers->quiesce(mddev, 1);
bitmap = bitmap_create(mddev, -1);
+ mddev_suspend(mddev);
if (!IS_ERR(bitmap)) {
mddev->bitmap = bitmap;
rv = bitmap_load(mddev);
@@ -6926,7 +6954,7 @@ static int update_array_info(struct mddev *mddev, mdu_array_info_t *info)
rv = PTR_ERR(bitmap);
if (rv)
bitmap_destroy(mddev);
- mddev->pers->quiesce(mddev, 0);
+ mddev_resume(mddev);
} else {
/* remove the bitmap */
if (!mddev->bitmap) {
@@ -6949,9 +6977,9 @@ static int update_array_info(struct mddev *mddev, mdu_array_info_t *info)
mddev->bitmap_info.nodes = 0;
md_cluster_ops->leave(mddev);
}
- mddev->pers->quiesce(mddev, 1);
+ mddev_suspend(mddev);
bitmap_destroy(mddev);
- mddev->pers->quiesce(mddev, 0);
+ mddev_resume(mddev);
mddev->bitmap_info.offset = 0;
}
}
@@ -7468,8 +7496,8 @@ void md_wakeup_thread(struct md_thread *thread)
{
if (thread) {
pr_debug("md: waking up MD thread %s.\n", thread->tsk->comm);
- if (!test_and_set_bit(THREAD_WAKEUP, &thread->flags))
- wake_up(&thread->wqueue);
+ set_bit(THREAD_WAKEUP, &thread->flags);
+ wake_up(&thread->wqueue);
}
}
EXPORT_SYMBOL(md_wakeup_thread);
@@ -8039,7 +8067,8 @@ bool md_write_start(struct mddev *mddev, struct bio *bi)
if (did_change)
sysfs_notify_dirent_safe(mddev->sysfs_state);
wait_event(mddev->sb_wait,
- !test_bit(MD_SB_CHANGE_PENDING, &mddev->sb_flags) && !mddev->suspended);
+ !test_bit(MD_SB_CHANGE_PENDING, &mddev->sb_flags) ||
+ mddev->suspended);
if (test_bit(MD_SB_CHANGE_PENDING, &mddev->sb_flags)) {
percpu_ref_put(&mddev->writes_pending);
return false;
@@ -8110,7 +8139,6 @@ void md_allow_write(struct mddev *mddev)
sysfs_notify_dirent_safe(mddev->sysfs_state);
/* wait for the dirty state to be recorded in the metadata */
wait_event(mddev->sb_wait,
- !test_bit(MD_SB_CHANGE_CLEAN, &mddev->sb_flags) &&
!test_bit(MD_SB_CHANGE_PENDING, &mddev->sb_flags));
} else
spin_unlock(&mddev->lock);
@@ -8477,16 +8505,19 @@ void md_do_sync(struct md_thread *thread)
} else {
if (!test_bit(MD_RECOVERY_INTR, &mddev->recovery))
mddev->curr_resync = MaxSector;
- rcu_read_lock();
- rdev_for_each_rcu(rdev, mddev)
- if (rdev->raid_disk >= 0 &&
- mddev->delta_disks >= 0 &&
- !test_bit(Journal, &rdev->flags) &&
- !test_bit(Faulty, &rdev->flags) &&
- !test_bit(In_sync, &rdev->flags) &&
- rdev->recovery_offset < mddev->curr_resync)
- rdev->recovery_offset = mddev->curr_resync;
- rcu_read_unlock();
+ if (!test_bit(MD_RECOVERY_RESHAPE, &mddev->recovery) &&
+ test_bit(MD_RECOVERY_RECOVER, &mddev->recovery)) {
+ rcu_read_lock();
+ rdev_for_each_rcu(rdev, mddev)
+ if (rdev->raid_disk >= 0 &&
+ mddev->delta_disks >= 0 &&
+ !test_bit(Journal, &rdev->flags) &&
+ !test_bit(Faulty, &rdev->flags) &&
+ !test_bit(In_sync, &rdev->flags) &&
+ rdev->recovery_offset < mddev->curr_resync)
+ rdev->recovery_offset = mddev->curr_resync;
+ rcu_read_unlock();
+ }
}
}
skip:
@@ -8813,6 +8844,16 @@ void md_check_recovery(struct mddev *mddev)
unlock:
wake_up(&mddev->sb_wait);
mddev_unlock(mddev);
+ } else if (test_bit(MD_ALLOW_SB_UPDATE, &mddev->flags) && mddev->sb_flags) {
+ /* Write superblock - thread that called mddev_suspend()
+ * holds reconfig_mutex for us.
+ */
+ set_bit(MD_UPDATING_SB, &mddev->flags);
+ smp_mb__after_atomic();
+ if (test_bit(MD_ALLOW_SB_UPDATE, &mddev->flags))
+ md_update_sb(mddev, 0);
+ clear_bit_unlock(MD_UPDATING_SB, &mddev->flags);
+ wake_up(&mddev->sb_wait);
}
}
EXPORT_SYMBOL(md_check_recovery);
diff --git a/drivers/md/md.h b/drivers/md/md.h
index d8287d3cd1bf..7d6bcf0eba0c 100644
--- a/drivers/md/md.h
+++ b/drivers/md/md.h
@@ -237,6 +237,12 @@ enum mddev_flags {
*/
MD_HAS_PPL, /* The raid array has PPL feature set */
MD_HAS_MULTIPLE_PPLS, /* The raid array has multiple PPLs feature set */
+ MD_ALLOW_SB_UPDATE, /* md_check_recovery is allowed to update
+ * the metadata without taking reconfig_mutex.
+ */
+ MD_UPDATING_SB, /* md_check_recovery is updating the metadata
+ * without explicitly holding reconfig_mutex.
+ */
};
enum mddev_sb_flags {
@@ -494,11 +500,6 @@ static inline void mddev_lock_nointr(struct mddev *mddev)
mutex_lock(&mddev->reconfig_mutex);
}
-static inline int mddev_is_locked(struct mddev *mddev)
-{
- return mutex_is_locked(&mddev->reconfig_mutex);
-}
-
static inline int mddev_trylock(struct mddev *mddev)
{
return mutex_trylock(&mddev->reconfig_mutex);
@@ -538,12 +539,11 @@ struct md_personality
int (*check_reshape) (struct mddev *mddev);
int (*start_reshape) (struct mddev *mddev);
void (*finish_reshape) (struct mddev *mddev);
- /* quiesce moves between quiescence states
- * 0 - fully active
- * 1 - no new requests allowed
- * others - reserved
+ /* quiesce suspends or resumes internal processing.
+ * 1 - stop new actions and wait for action io to complete
+ * 0 - return to normal behaviour
*/
- void (*quiesce) (struct mddev *mddev, int state);
+ void (*quiesce) (struct mddev *mddev, int quiesce);
/* takeover is used to transition an array from one
* personality to another. The new personality must be able
* to handle the data in the current layout.
diff --git a/drivers/md/raid0.c b/drivers/md/raid0.c
index 5a00fc118470..5ecba9eef441 100644
--- a/drivers/md/raid0.c
+++ b/drivers/md/raid0.c
@@ -768,7 +768,7 @@ static void *raid0_takeover(struct mddev *mddev)
return ERR_PTR(-EINVAL);
}
-static void raid0_quiesce(struct mddev *mddev, int state)
+static void raid0_quiesce(struct mddev *mddev, int quiesce)
{
}
diff --git a/drivers/md/raid1.c b/drivers/md/raid1.c
index f3f3e40dc9d8..cc9d337a1ed3 100644
--- a/drivers/md/raid1.c
+++ b/drivers/md/raid1.c
@@ -37,13 +37,12 @@
#include <linux/module.h>
#include <linux/seq_file.h>
#include <linux/ratelimit.h>
-#include <linux/sched/signal.h>
#include <trace/events/block.h>
#include "md.h"
#include "raid1.h"
-#include "bitmap.h"
+#include "md-bitmap.h"
#define UNSUPPORTED_MDDEV_FLAGS \
((1L << MD_HAS_JOURNAL) | \
@@ -990,14 +989,6 @@ static void wait_barrier(struct r1conf *conf, sector_t sector_nr)
_wait_barrier(conf, idx);
}
-static void wait_all_barriers(struct r1conf *conf)
-{
- int idx;
-
- for (idx = 0; idx < BARRIER_BUCKETS_NR; idx++)
- _wait_barrier(conf, idx);
-}
-
static void _allow_barrier(struct r1conf *conf, int idx)
{
atomic_dec(&conf->nr_pending[idx]);
@@ -1011,14 +1002,6 @@ static void allow_barrier(struct r1conf *conf, sector_t sector_nr)
_allow_barrier(conf, idx);
}
-static void allow_all_barriers(struct r1conf *conf)
-{
- int idx;
-
- for (idx = 0; idx < BARRIER_BUCKETS_NR; idx++)
- _allow_barrier(conf, idx);
-}
-
/* conf->resync_lock should be held */
static int get_unqueued_pending(struct r1conf *conf)
{
@@ -1303,42 +1286,28 @@ static void raid1_write_request(struct mddev *mddev, struct bio *bio,
int first_clone;
int max_sectors;
- /*
- * Register the new request and wait if the reconstruction
- * thread has put up a bar for new requests.
- * Continue immediately if no resync is active currently.
- */
-
-
- if ((bio_end_sector(bio) > mddev->suspend_lo &&
- bio->bi_iter.bi_sector < mddev->suspend_hi) ||
- (mddev_is_clustered(mddev) &&
+ if (mddev_is_clustered(mddev) &&
md_cluster_ops->area_resyncing(mddev, WRITE,
- bio->bi_iter.bi_sector, bio_end_sector(bio)))) {
+ bio->bi_iter.bi_sector, bio_end_sector(bio))) {
- /*
- * As the suspend_* range is controlled by userspace, we want
- * an interruptible wait.
- */
DEFINE_WAIT(w);
for (;;) {
- sigset_t full, old;
prepare_to_wait(&conf->wait_barrier,
- &w, TASK_INTERRUPTIBLE);
- if (bio_end_sector(bio) <= mddev->suspend_lo ||
- bio->bi_iter.bi_sector >= mddev->suspend_hi ||
- (mddev_is_clustered(mddev) &&
- !md_cluster_ops->area_resyncing(mddev, WRITE,
- bio->bi_iter.bi_sector,
- bio_end_sector(bio))))
+ &w, TASK_IDLE);
+ if (!md_cluster_ops->area_resyncing(mddev, WRITE,
+ bio->bi_iter.bi_sector,
+ bio_end_sector(bio)))
break;
- sigfillset(&full);
- sigprocmask(SIG_BLOCK, &full, &old);
schedule();
- sigprocmask(SIG_SETMASK, &old, NULL);
}
finish_wait(&conf->wait_barrier, &w);
}
+
+ /*
+ * Register the new request and wait if the reconstruction
+ * thread has put up a bar for new requests.
+ * Continue immediately if no resync is active currently.
+ */
wait_barrier(conf, bio->bi_iter.bi_sector);
r1_bio = alloc_r1bio(mddev, bio);
@@ -1654,8 +1623,12 @@ static void print_conf(struct r1conf *conf)
static void close_sync(struct r1conf *conf)
{
- wait_all_barriers(conf);
- allow_all_barriers(conf);
+ int idx;
+
+ for (idx = 0; idx < BARRIER_BUCKETS_NR; idx++) {
+ _wait_barrier(conf, idx);
+ _allow_barrier(conf, idx);
+ }
mempool_destroy(conf->r1buf_pool);
conf->r1buf_pool = NULL;
@@ -3277,21 +3250,14 @@ static int raid1_reshape(struct mddev *mddev)
return 0;
}
-static void raid1_quiesce(struct mddev *mddev, int state)
+static void raid1_quiesce(struct mddev *mddev, int quiesce)
{
struct r1conf *conf = mddev->private;
- switch(state) {
- case 2: /* wake for suspend */
- wake_up(&conf->wait_barrier);
- break;
- case 1:
+ if (quiesce)
freeze_array(conf, 0);
- break;
- case 0:
+ else
unfreeze_array(conf);
- break;
- }
}
static void *raid1_takeover(struct mddev *mddev)
diff --git a/drivers/md/raid10.c b/drivers/md/raid10.c
index 374df5796649..b9edbc747a95 100644
--- a/drivers/md/raid10.c
+++ b/drivers/md/raid10.c
@@ -29,7 +29,7 @@
#include "md.h"
#include "raid10.h"
#include "raid0.h"
-#include "bitmap.h"
+#include "md-bitmap.h"
/*
* RAID10 provides a combination of RAID0 and RAID1 functionality.
@@ -136,10 +136,13 @@ static void r10bio_pool_free(void *r10_bio, void *data)
kfree(r10_bio);
}
+#define RESYNC_SECTORS (RESYNC_BLOCK_SIZE >> 9)
/* amount of memory to reserve for resync requests */
#define RESYNC_WINDOW (1024*1024)
/* maximum number of concurrent requests, memory permitting */
#define RESYNC_DEPTH (32*1024*1024/RESYNC_BLOCK_SIZE)
+#define CLUSTER_RESYNC_WINDOW (16 * RESYNC_WINDOW)
+#define CLUSTER_RESYNC_WINDOW_SECTORS (CLUSTER_RESYNC_WINDOW >> 9)
/*
* When performing a resync, we need to read and compare, so
@@ -383,12 +386,11 @@ static void raid10_end_read_request(struct bio *bio)
{
int uptodate = !bio->bi_status;
struct r10bio *r10_bio = bio->bi_private;
- int slot, dev;
+ int slot;
struct md_rdev *rdev;
struct r10conf *conf = r10_bio->mddev->private;
slot = r10_bio->read_slot;
- dev = r10_bio->devs[slot].devnum;
rdev = r10_bio->devs[slot].rdev;
/*
* this branch is our 'one mirror IO has finished' event handler:
@@ -748,7 +750,6 @@ static struct md_rdev *read_balance(struct r10conf *conf,
raid10_find_phys(conf, r10_bio);
rcu_read_lock();
- sectors = r10_bio->sectors;
best_slot = -1;
best_rdev = NULL;
best_dist = MaxSector;
@@ -761,8 +762,11 @@ static struct md_rdev *read_balance(struct r10conf *conf,
* the resync window. We take the first readable disk when
* above the resync window.
*/
- if (conf->mddev->recovery_cp < MaxSector
- && (this_sector + sectors >= conf->next_resync))
+ if ((conf->mddev->recovery_cp < MaxSector
+ && (this_sector + sectors >= conf->next_resync)) ||
+ (mddev_is_clustered(conf->mddev) &&
+ md_cluster_ops->area_resyncing(conf->mddev, READ, this_sector,
+ this_sector + sectors)))
do_balance = 0;
for (slot = 0; slot < conf->copies ; slot++) {
@@ -1293,6 +1297,22 @@ static void raid10_write_request(struct mddev *mddev, struct bio *bio,
sector_t sectors;
int max_sectors;
+ if ((mddev_is_clustered(mddev) &&
+ md_cluster_ops->area_resyncing(mddev, WRITE,
+ bio->bi_iter.bi_sector,
+ bio_end_sector(bio)))) {
+ DEFINE_WAIT(w);
+ for (;;) {
+ prepare_to_wait(&conf->wait_barrier,
+ &w, TASK_IDLE);
+ if (!md_cluster_ops->area_resyncing(mddev, WRITE,
+ bio->bi_iter.bi_sector, bio_end_sector(bio)))
+ break;
+ schedule();
+ }
+ finish_wait(&conf->wait_barrier, &w);
+ }
+
/*
* Register the new request and wait if the reconstruction
* thread has put up a bar for new requests.
@@ -2575,7 +2595,6 @@ static void handle_read_error(struct mddev *mddev, struct r10bio *r10_bio)
struct bio *bio;
struct r10conf *conf = mddev->private;
struct md_rdev *rdev = r10_bio->devs[slot].rdev;
- sector_t bio_last_sector;
/* we got a read error. Maybe the drive is bad. Maybe just
* the block and we can fix it.
@@ -2586,7 +2605,6 @@ static void handle_read_error(struct mddev *mddev, struct r10bio *r10_bio)
* frozen.
*/
bio = r10_bio->devs[slot].bio;
- bio_last_sector = r10_bio->devs[slot].addr + rdev->data_offset + r10_bio->sectors;
bio_put(bio);
r10_bio->devs[slot].bio = NULL;
@@ -2826,6 +2844,43 @@ static struct r10bio *raid10_alloc_init_r10buf(struct r10conf *conf)
}
/*
+ * Set cluster_sync_high since we need other nodes to add the
+ * range [cluster_sync_low, cluster_sync_high] to suspend list.
+ */
+static void raid10_set_cluster_sync_high(struct r10conf *conf)
+{
+ sector_t window_size;
+ int extra_chunk, chunks;
+
+ /*
+ * First, here we define "stripe" as a unit which across
+ * all member devices one time, so we get chunks by use
+ * raid_disks / near_copies. Otherwise, if near_copies is
+ * close to raid_disks, then resync window could increases
+ * linearly with the increase of raid_disks, which means
+ * we will suspend a really large IO window while it is not
+ * necessary. If raid_disks is not divisible by near_copies,
+ * an extra chunk is needed to ensure the whole "stripe" is
+ * covered.
+ */
+
+ chunks = conf->geo.raid_disks / conf->geo.near_copies;
+ if (conf->geo.raid_disks % conf->geo.near_copies == 0)
+ extra_chunk = 0;
+ else
+ extra_chunk = 1;
+ window_size = (chunks + extra_chunk) * conf->mddev->chunk_sectors;
+
+ /*
+ * At least use a 32M window to align with raid1's resync window
+ */
+ window_size = (CLUSTER_RESYNC_WINDOW_SECTORS > window_size) ?
+ CLUSTER_RESYNC_WINDOW_SECTORS : window_size;
+
+ conf->cluster_sync_high = conf->cluster_sync_low + window_size;
+}
+
+/*
* perform a "sync" on one "block"
*
* We need to make sure that no normal I/O request - particularly write
@@ -2897,6 +2952,9 @@ static sector_t raid10_sync_request(struct mddev *mddev, sector_t sector_nr,
test_bit(MD_RECOVERY_RESHAPE, &mddev->recovery))
max_sector = mddev->resync_max_sectors;
if (sector_nr >= max_sector) {
+ conf->cluster_sync_low = 0;
+ conf->cluster_sync_high = 0;
+
/* If we aborted, we need to abort the
* sync on the 'current' bitmap chucks (there can
* be several when recovering multiple devices).
@@ -3251,7 +3309,17 @@ static sector_t raid10_sync_request(struct mddev *mddev, sector_t sector_nr,
/* resync. Schedule a read for every block at this virt offset */
int count = 0;
- bitmap_cond_end_sync(mddev->bitmap, sector_nr, 0);
+ /*
+ * Since curr_resync_completed could probably not update in
+ * time, and we will set cluster_sync_low based on it.
+ * Let's check against "sector_nr + 2 * RESYNC_SECTORS" for
+ * safety reason, which ensures curr_resync_completed is
+ * updated in bitmap_cond_end_sync.
+ */
+ bitmap_cond_end_sync(mddev->bitmap, sector_nr,
+ mddev_is_clustered(mddev) &&
+ (sector_nr + 2 * RESYNC_SECTORS >
+ conf->cluster_sync_high));
if (!bitmap_start_sync(mddev->bitmap, sector_nr,
&sync_blocks, mddev->degraded) &&
@@ -3385,6 +3453,52 @@ static sector_t raid10_sync_request(struct mddev *mddev, sector_t sector_nr,
} while (++page_idx < RESYNC_PAGES);
r10_bio->sectors = nr_sectors;
+ if (mddev_is_clustered(mddev) &&
+ test_bit(MD_RECOVERY_SYNC, &mddev->recovery)) {
+ /* It is resync not recovery */
+ if (conf->cluster_sync_high < sector_nr + nr_sectors) {
+ conf->cluster_sync_low = mddev->curr_resync_completed;
+ raid10_set_cluster_sync_high(conf);
+ /* Send resync message */
+ md_cluster_ops->resync_info_update(mddev,
+ conf->cluster_sync_low,
+ conf->cluster_sync_high);
+ }
+ } else if (mddev_is_clustered(mddev)) {
+ /* This is recovery not resync */
+ sector_t sect_va1, sect_va2;
+ bool broadcast_msg = false;
+
+ for (i = 0; i < conf->geo.raid_disks; i++) {
+ /*
+ * sector_nr is a device address for recovery, so we
+ * need translate it to array address before compare
+ * with cluster_sync_high.
+ */
+ sect_va1 = raid10_find_virt(conf, sector_nr, i);
+
+ if (conf->cluster_sync_high < sect_va1 + nr_sectors) {
+ broadcast_msg = true;
+ /*
+ * curr_resync_completed is similar as
+ * sector_nr, so make the translation too.
+ */
+ sect_va2 = raid10_find_virt(conf,
+ mddev->curr_resync_completed, i);
+
+ if (conf->cluster_sync_low == 0 ||
+ conf->cluster_sync_low > sect_va2)
+ conf->cluster_sync_low = sect_va2;
+ }
+ }
+ if (broadcast_msg) {
+ raid10_set_cluster_sync_high(conf);
+ md_cluster_ops->resync_info_update(mddev,
+ conf->cluster_sync_low,
+ conf->cluster_sync_high);
+ }
+ }
+
while (biolist) {
bio = biolist;
biolist = biolist->bi_next;
@@ -3644,6 +3758,18 @@ static int raid10_run(struct mddev *mddev)
if (!conf)
goto out;
+ if (mddev_is_clustered(conf->mddev)) {
+ int fc, fo;
+
+ fc = (mddev->layout >> 8) & 255;
+ fo = mddev->layout & (1<<16);
+ if (fc > 1 || fo > 0) {
+ pr_err("only near layout is supported by clustered"
+ " raid10\n");
+ goto out;
+ }
+ }
+
mddev->thread = conf->thread;
conf->thread = NULL;
@@ -3832,18 +3958,14 @@ static void raid10_free(struct mddev *mddev, void *priv)
kfree(conf);
}
-static void raid10_quiesce(struct mddev *mddev, int state)
+static void raid10_quiesce(struct mddev *mddev, int quiesce)
{
struct r10conf *conf = mddev->private;
- switch(state) {
- case 1:
+ if (quiesce)
raise_barrier(conf, 0);
- break;
- case 0:
+ else
lower_barrier(conf);
- break;
- }
}
static int raid10_resize(struct mddev *mddev, sector_t sectors)
@@ -4578,15 +4700,18 @@ static int handle_reshape_read_error(struct mddev *mddev,
/* Use sync reads to get the blocks from somewhere else */
int sectors = r10_bio->sectors;
struct r10conf *conf = mddev->private;
- struct {
- struct r10bio r10_bio;
- struct r10dev devs[conf->copies];
- } on_stack;
- struct r10bio *r10b = &on_stack.r10_bio;
+ struct r10bio *r10b;
int slot = 0;
int idx = 0;
struct page **pages;
+ r10b = kmalloc(sizeof(*r10b) +
+ sizeof(struct r10dev) * conf->copies, GFP_NOIO);
+ if (!r10b) {
+ set_bit(MD_RECOVERY_INTR, &mddev->recovery);
+ return -ENOMEM;
+ }
+
/* reshape IOs share pages from .devs[0].bio */
pages = get_resync_pages(r10_bio->devs[0].bio)->pages;
@@ -4635,11 +4760,13 @@ static int handle_reshape_read_error(struct mddev *mddev,
/* couldn't read this block, must give up */
set_bit(MD_RECOVERY_INTR,
&mddev->recovery);
+ kfree(r10b);
return -EIO;
}
sectors -= s;
idx++;
}
+ kfree(r10b);
return 0;
}
diff --git a/drivers/md/raid10.h b/drivers/md/raid10.h
index abceccab6671..db2ac22ac1b4 100644
--- a/drivers/md/raid10.h
+++ b/drivers/md/raid10.h
@@ -89,6 +89,12 @@ struct r10conf {
* the new thread here until we fully activate the array.
*/
struct md_thread *thread;
+
+ /*
+ * Keep track of cluster resync window to send to other nodes.
+ */
+ sector_t cluster_sync_low;
+ sector_t cluster_sync_high;
};
/*
diff --git a/drivers/md/raid5-cache.c b/drivers/md/raid5-cache.c
index 0b7406ac8ce1..f1c86d938502 100644
--- a/drivers/md/raid5-cache.c
+++ b/drivers/md/raid5-cache.c
@@ -23,7 +23,7 @@
#include <linux/types.h>
#include "md.h"
#include "raid5.h"
-#include "bitmap.h"
+#include "md-bitmap.h"
#include "raid5-log.h"
/*
@@ -539,7 +539,7 @@ static void r5l_log_run_stripes(struct r5l_log *log)
{
struct r5l_io_unit *io, *next;
- assert_spin_locked(&log->io_list_lock);
+ lockdep_assert_held(&log->io_list_lock);
list_for_each_entry_safe(io, next, &log->running_ios, log_sibling) {
/* don't change list order */
@@ -555,7 +555,7 @@ static void r5l_move_to_end_ios(struct r5l_log *log)
{
struct r5l_io_unit *io, *next;
- assert_spin_locked(&log->io_list_lock);
+ lockdep_assert_held(&log->io_list_lock);
list_for_each_entry_safe(io, next, &log->running_ios, log_sibling) {
/* don't change list order */
@@ -693,6 +693,8 @@ static void r5c_disable_writeback_async(struct work_struct *work)
struct r5l_log *log = container_of(work, struct r5l_log,
disable_writeback_work);
struct mddev *mddev = log->rdev->mddev;
+ struct r5conf *conf = mddev->private;
+ int locked = 0;
if (log->r5c_journal_mode == R5C_JOURNAL_MODE_WRITE_THROUGH)
return;
@@ -701,11 +703,15 @@ static void r5c_disable_writeback_async(struct work_struct *work)
/* wait superblock change before suspend */
wait_event(mddev->sb_wait,
- !test_bit(MD_SB_CHANGE_PENDING, &mddev->sb_flags));
-
- mddev_suspend(mddev);
- log->r5c_journal_mode = R5C_JOURNAL_MODE_WRITE_THROUGH;
- mddev_resume(mddev);
+ conf->log == NULL ||
+ (!test_bit(MD_SB_CHANGE_PENDING, &mddev->sb_flags) &&
+ (locked = mddev_trylock(mddev))));
+ if (locked) {
+ mddev_suspend(mddev);
+ log->r5c_journal_mode = R5C_JOURNAL_MODE_WRITE_THROUGH;
+ mddev_resume(mddev);
+ mddev_unlock(mddev);
+ }
}
static void r5l_submit_current_io(struct r5l_log *log)
@@ -1194,7 +1200,7 @@ static void r5l_run_no_mem_stripe(struct r5l_log *log)
{
struct stripe_head *sh;
- assert_spin_locked(&log->io_list_lock);
+ lockdep_assert_held(&log->io_list_lock);
if (!list_empty(&log->no_mem_stripes)) {
sh = list_first_entry(&log->no_mem_stripes,
@@ -1210,7 +1216,7 @@ static bool r5l_complete_finished_ios(struct r5l_log *log)
struct r5l_io_unit *io, *next;
bool found = false;
- assert_spin_locked(&log->io_list_lock);
+ lockdep_assert_held(&log->io_list_lock);
list_for_each_entry_safe(io, next, &log->finished_ios, log_sibling) {
/* don't change list order */
@@ -1382,7 +1388,7 @@ static void r5c_flush_stripe(struct r5conf *conf, struct stripe_head *sh)
* raid5_release_stripe() while holding conf->device_lock
*/
BUG_ON(test_bit(STRIPE_ON_RELEASE_LIST, &sh->state));
- assert_spin_locked(&conf->device_lock);
+ lockdep_assert_held(&conf->device_lock);
list_del_init(&sh->lru);
atomic_inc(&sh->count);
@@ -1409,7 +1415,7 @@ void r5c_flush_cache(struct r5conf *conf, int num)
int count;
struct stripe_head *sh, *next;
- assert_spin_locked(&conf->device_lock);
+ lockdep_assert_held(&conf->device_lock);
if (!conf->log)
return;
@@ -1583,21 +1589,21 @@ void r5l_wake_reclaim(struct r5l_log *log, sector_t space)
md_wakeup_thread(log->reclaim_thread);
}
-void r5l_quiesce(struct r5l_log *log, int state)
+void r5l_quiesce(struct r5l_log *log, int quiesce)
{
struct mddev *mddev;
- if (!log || state == 2)
+ if (!log)
return;
- if (state == 0)
- kthread_unpark(log->reclaim_thread->tsk);
- else if (state == 1) {
+
+ if (quiesce) {
/* make sure r5l_write_super_and_discard_space exits */
mddev = log->rdev->mddev;
wake_up(&mddev->sb_wait);
kthread_park(log->reclaim_thread->tsk);
r5l_wake_reclaim(log, MaxSector);
r5l_do_reclaim(log);
- }
+ } else
+ kthread_unpark(log->reclaim_thread->tsk);
}
bool r5l_log_disk_error(struct r5conf *conf)
@@ -3165,6 +3171,8 @@ void r5l_exit_log(struct r5conf *conf)
conf->log = NULL;
synchronize_rcu();
+ /* Ensure disable_writeback_work wakes up and exits */
+ wake_up(&conf->mddev->sb_wait);
flush_work(&log->disable_writeback_work);
md_unregister_thread(&log->reclaim_thread);
mempool_destroy(log->meta_pool);
diff --git a/drivers/md/raid5-log.h b/drivers/md/raid5-log.h
index 7f9ad5f7cda0..284578b0a349 100644
--- a/drivers/md/raid5-log.h
+++ b/drivers/md/raid5-log.h
@@ -9,7 +9,7 @@ extern void r5l_write_stripe_run(struct r5l_log *log);
extern void r5l_flush_stripe_to_raid(struct r5l_log *log);
extern void r5l_stripe_write_finished(struct stripe_head *sh);
extern int r5l_handle_flush_request(struct r5l_log *log, struct bio *bio);
-extern void r5l_quiesce(struct r5l_log *log, int state);
+extern void r5l_quiesce(struct r5l_log *log, int quiesce);
extern bool r5l_log_disk_error(struct r5conf *conf);
extern bool r5c_is_writeback(struct r5l_log *log);
extern int
diff --git a/drivers/md/raid5-ppl.c b/drivers/md/raid5-ppl.c
index cd026c88f7ef..628c0bf7b9fd 100644
--- a/drivers/md/raid5-ppl.c
+++ b/drivers/md/raid5-ppl.c
@@ -758,7 +758,8 @@ static int ppl_recover_entry(struct ppl_log *log, struct ppl_header_entry *e,
(unsigned long long)sector);
rdev = conf->disks[dd_idx].rdev;
- if (!rdev) {
+ if (!rdev || (!test_bit(In_sync, &rdev->flags) &&
+ sector >= rdev->recovery_offset)) {
pr_debug("%s:%*s data member disk %d missing\n",
__func__, indent, "", dd_idx);
update_parity = false;
@@ -1296,8 +1297,7 @@ int ppl_init_log(struct r5conf *conf)
if (ret) {
goto err;
- } else if (!mddev->pers &&
- mddev->recovery_cp == 0 && !mddev->degraded &&
+ } else if (!mddev->pers && mddev->recovery_cp == 0 &&
ppl_conf->recovered_entries > 0 &&
ppl_conf->mismatch_count == 0) {
/*
diff --git a/drivers/md/raid5.c b/drivers/md/raid5.c
index 7d9a50eed9db..31dc25e2871a 100644
--- a/drivers/md/raid5.c
+++ b/drivers/md/raid5.c
@@ -55,7 +55,6 @@
#include <linux/ratelimit.h>
#include <linux/nodemask.h>
#include <linux/flex_array.h>
-#include <linux/sched/signal.h>
#include <trace/events/block.h>
#include <linux/list_sort.h>
@@ -63,7 +62,7 @@
#include "md.h"
#include "raid5.h"
#include "raid0.h"
-#include "bitmap.h"
+#include "md-bitmap.h"
#include "raid5-log.h"
#define UNSUPPORTED_MDDEV_FLAGS (1L << MD_FAILFAST_SUPPORTED)
@@ -1818,8 +1817,11 @@ static void ops_complete_reconstruct(void *stripe_head_ref)
struct r5dev *dev = &sh->dev[i];
if (dev->written || i == pd_idx || i == qd_idx) {
- if (!discard && !test_bit(R5_SkipCopy, &dev->flags))
+ if (!discard && !test_bit(R5_SkipCopy, &dev->flags)) {
set_bit(R5_UPTODATE, &dev->flags);
+ if (test_bit(STRIPE_EXPAND_READY, &sh->state))
+ set_bit(R5_Expanded, &dev->flags);
+ }
if (fua)
set_bit(R5_WantFUA, &dev->flags);
if (sync)
@@ -5682,28 +5684,6 @@ static bool raid5_make_request(struct mddev *mddev, struct bio * bi)
goto retry;
}
- if (rw == WRITE &&
- logical_sector >= mddev->suspend_lo &&
- logical_sector < mddev->suspend_hi) {
- raid5_release_stripe(sh);
- /* As the suspend_* range is controlled by
- * userspace, we want an interruptible
- * wait.
- */
- prepare_to_wait(&conf->wait_for_overlap,
- &w, TASK_INTERRUPTIBLE);
- if (logical_sector >= mddev->suspend_lo &&
- logical_sector < mddev->suspend_hi) {
- sigset_t full, old;
- sigfillset(&full);
- sigprocmask(SIG_BLOCK, &full, &old);
- schedule();
- sigprocmask(SIG_SETMASK, &old, NULL);
- do_prepare = true;
- }
- goto retry;
- }
-
if (test_bit(STRIPE_EXPANDING, &sh->state) ||
!add_stripe_bio(sh, bi, dd_idx, rw, previous)) {
/* Stripe is busy expanding or
@@ -5758,6 +5738,7 @@ static sector_t reshape_request(struct mddev *mddev, sector_t sector_nr, int *sk
*/
struct r5conf *conf = mddev->private;
struct stripe_head *sh;
+ struct md_rdev *rdev;
sector_t first_sector, last_sector;
int raid_disks = conf->previous_raid_disks;
int data_disks = raid_disks - conf->max_degraded;
@@ -5880,6 +5861,15 @@ static sector_t reshape_request(struct mddev *mddev, sector_t sector_nr, int *sk
return 0;
mddev->reshape_position = conf->reshape_progress;
mddev->curr_resync_completed = sector_nr;
+ if (!mddev->reshape_backwards)
+ /* Can update recovery_offset */
+ rdev_for_each(rdev, mddev)
+ if (rdev->raid_disk >= 0 &&
+ !test_bit(Journal, &rdev->flags) &&
+ !test_bit(In_sync, &rdev->flags) &&
+ rdev->recovery_offset < sector_nr)
+ rdev->recovery_offset = sector_nr;
+
conf->reshape_checkpoint = jiffies;
set_bit(MD_SB_CHANGE_DEVS, &mddev->sb_flags);
md_wakeup_thread(mddev->thread);
@@ -5978,6 +5968,14 @@ finish:
goto ret;
mddev->reshape_position = conf->reshape_progress;
mddev->curr_resync_completed = sector_nr;
+ if (!mddev->reshape_backwards)
+ /* Can update recovery_offset */
+ rdev_for_each(rdev, mddev)
+ if (rdev->raid_disk >= 0 &&
+ !test_bit(Journal, &rdev->flags) &&
+ !test_bit(In_sync, &rdev->flags) &&
+ rdev->recovery_offset < sector_nr)
+ rdev->recovery_offset = sector_nr;
conf->reshape_checkpoint = jiffies;
set_bit(MD_SB_CHANGE_DEVS, &mddev->sb_flags);
md_wakeup_thread(mddev->thread);
@@ -7156,6 +7154,13 @@ static int raid5_run(struct mddev *mddev)
min_offset_diff = diff;
}
+ if ((test_bit(MD_HAS_JOURNAL, &mddev->flags) || journal_dev) &&
+ (mddev->bitmap_info.offset || mddev->bitmap_info.file)) {
+ pr_notice("md/raid:%s: array cannot have both journal and bitmap\n",
+ mdname(mddev));
+ return -EINVAL;
+ }
+
if (mddev->reshape_position != MaxSector) {
/* Check that we can continue the reshape.
* Difficulties arise if the stripe we would write to
@@ -7958,6 +7963,7 @@ static void end_reshape(struct r5conf *conf)
{
if (!test_bit(MD_RECOVERY_INTR, &conf->mddev->recovery)) {
+ struct md_rdev *rdev;
spin_lock_irq(&conf->device_lock);
conf->previous_raid_disks = conf->raid_disks;
@@ -7965,6 +7971,11 @@ static void end_reshape(struct r5conf *conf)
smp_wmb();
conf->reshape_progress = MaxSector;
conf->mddev->reshape_position = MaxSector;
+ rdev_for_each(rdev, conf->mddev)
+ if (rdev->raid_disk >= 0 &&
+ !test_bit(Journal, &rdev->flags) &&
+ !test_bit(In_sync, &rdev->flags))
+ rdev->recovery_offset = MaxSector;
spin_unlock_irq(&conf->device_lock);
wake_up(&conf->wait_for_overlap);
@@ -8020,16 +8031,12 @@ static void raid5_finish_reshape(struct mddev *mddev)
}
}
-static void raid5_quiesce(struct mddev *mddev, int state)
+static void raid5_quiesce(struct mddev *mddev, int quiesce)
{
struct r5conf *conf = mddev->private;
- switch(state) {
- case 2: /* resume for a suspend */
- wake_up(&conf->wait_for_overlap);
- break;
-
- case 1: /* stop all writes */
+ if (quiesce) {
+ /* stop all writes */
lock_all_device_hash_locks_irq(conf);
/* '2' tells resync/reshape to pause so that all
* active stripes can drain
@@ -8045,17 +8052,15 @@ static void raid5_quiesce(struct mddev *mddev, int state)
unlock_all_device_hash_locks_irq(conf);
/* allow reshape to continue */
wake_up(&conf->wait_for_overlap);
- break;
-
- case 0: /* re-enable writes */
+ } else {
+ /* re-enable writes */
lock_all_device_hash_locks_irq(conf);
conf->quiesce = 0;
wake_up(&conf->wait_for_quiescent);
wake_up(&conf->wait_for_overlap);
unlock_all_device_hash_locks_irq(conf);
- break;
}
- r5l_quiesce(conf->log, state);
+ r5l_quiesce(conf->log, quiesce);
}
static void *raid45_takeover_raid0(struct mddev *mddev, int level)
generated by cgit (git 2.34.1) at 2024-05-03 17:59:08 +0000