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Merge tag 'md/4.7-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/shli/md

Browse Source 
Pull MD updates from Shaohua Li:
 "Several patches from Guoqing fixing md-cluster bugs and several
  patches from Heinz fixing dm-raid bugs"

* tag 'md/4.7-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/shli/md:
  md-cluster: check the return value of process_recvd_msg
  md-cluster: gather resync infos and enable recv_thread after bitmap is ready
  md: set MD_CHANGE_PENDING in a atomic region
  md: raid5: add prerequisite to run underneath dm-raid
  md: raid10: add prerequisite to run underneath dm-raid
  md: md.c: fix oops in mddev_suspend for raid0
  md-cluster: fix ifnullfree.cocci warnings
  md-cluster/bitmap: unplug bitmap to sync dirty pages to disk
  md-cluster/bitmap: fix wrong page num in bitmap_file_clear_bit and bitmap_file_set_bit
  md-cluster/bitmap: fix wrong calcuation of offset
  md-cluster: sync bitmap when node received RESYNCING msg
  md-cluster: always setup in-memory bitmap
  md-cluster: wakeup thread if activated a spare disk
  md-cluster: change array_sectors and update size are not supported
  md-cluster: fix locking when node joins cluster during message broadcast
  md-cluster: unregister thread if err happened
  md-cluster: wake up thread to continue recovery
  md-cluser: make resync_finish only called after pers->sync_request
  md-cluster: change resync lock from asynchronous to synchronous
This commit is contained in:
Linus Torvalds
2016-05-19 17:25:13 -07:00
parent e0fb1b3639 1fa9a1ad0a
commit feaa7cb5c5
11 changed files with 257 additions and 77 deletions
Download Patch File Download Diff File Expand all files Collapse all files

86
drivers/md/md.c
View File

@@ -307,7 +307,7 @@ static blk_qc_t md_make_request(struct request_queue *q, struct bio *bio)
*/
void mddev_suspend(struct mddev *mddev)
{
WARN_ON_ONCE(current == mddev->thread->tsk);
WARN_ON_ONCE(mddev->thread && current == mddev->thread->tsk);
if (mddev->suspended++)
return;
synchronize_rcu();
@@ -2291,19 +2291,24 @@ void md_update_sb(struct mddev *mddev, int force_change)
return;
}
repeat:
if (mddev_is_clustered(mddev)) {
if (test_and_clear_bit(MD_CHANGE_DEVS, &mddev->flags))
force_change = 1;
if (test_and_clear_bit(MD_CHANGE_CLEAN, &mddev->flags))
nospares = 1;
ret = md_cluster_ops->metadata_update_start(mddev);
/* Has someone else has updated the sb */
if (!does_sb_need_changing(mddev)) {
if (ret == 0)
md_cluster_ops->metadata_update_cancel(mddev);
clear_bit(MD_CHANGE_PENDING, &mddev->flags);
bit_clear_unless(&mddev->flags, BIT(MD_CHANGE_PENDING),
BIT(MD_CHANGE_DEVS) |
BIT(MD_CHANGE_CLEAN));
return;
}
}
repeat:
/* First make sure individual recovery_offsets are correct */
rdev_for_each(rdev, mddev) {
if (rdev->raid_disk >= 0 &&
@@ -2430,15 +2435,14 @@ repeat:
md_super_wait(mddev);
/* if there was a failure, MD_CHANGE_DEVS was set, and we re-write super */
spin_lock(&mddev->lock);
if (mddev_is_clustered(mddev) && ret == 0)
md_cluster_ops->metadata_update_finish(mddev);
if (mddev->in_sync != sync_req ||
test_bit(MD_CHANGE_DEVS, &mddev->flags)) {
!bit_clear_unless(&mddev->flags, BIT(MD_CHANGE_PENDING),
BIT(MD_CHANGE_DEVS) | BIT(MD_CHANGE_CLEAN)))
/* have to write it out again */
spin_unlock(&mddev->lock);
goto repeat;
}
clear_bit(MD_CHANGE_PENDING, &mddev->flags);
spin_unlock(&mddev->lock);
wake_up(&mddev->sb_wait);
if (test_bit(MD_RECOVERY_RUNNING, &mddev->recovery))
sysfs_notify(&mddev->kobj, NULL, "sync_completed");
@@ -2452,9 +2456,6 @@ repeat:
clear_bit(BlockedBadBlocks, &rdev->flags);
wake_up(&rdev->blocked_wait);
}
if (mddev_is_clustered(mddev) && ret == 0)
md_cluster_ops->metadata_update_finish(mddev);
}
EXPORT_SYMBOL(md_update_sb);
@@ -4816,6 +4817,10 @@ array_size_store(struct mddev *mddev, const char *buf, size_t len)
if (err)
return err;
/* cluster raid doesn't support change array_sectors */
if (mddev_is_clustered(mddev))
return -EINVAL;
if (strncmp(buf, "default", 7) == 0) {
if (mddev->pers)
sectors = mddev->pers->size(mddev, 0, 0);
@@ -6437,6 +6442,10 @@ static int update_size(struct mddev *mddev, sector_t num_sectors)
int rv;
int fit = (num_sectors == 0);
/* cluster raid doesn't support update size */
if (mddev_is_clustered(mddev))
return -EINVAL;
if (mddev->pers->resize == NULL)
return -EINVAL;
/* The "num_sectors" is the number of sectors of each device that
@@ -7785,7 +7794,7 @@ void md_do_sync(struct md_thread *thread)
struct md_rdev *rdev;
char *desc, *action = NULL;
struct blk_plug plug;
bool cluster_resync_finished = false;
int ret;
/* just incase thread restarts... */
if (test_bit(MD_RECOVERY_DONE, &mddev->recovery))
@@ -7795,6 +7804,19 @@ void md_do_sync(struct md_thread *thread)
return;
}
if (mddev_is_clustered(mddev)) {
ret = md_cluster_ops->resync_start(mddev);
if (ret)
goto skip;
if (!(test_bit(MD_RECOVERY_SYNC, &mddev->recovery) ||
test_bit(MD_RECOVERY_RESHAPE, &mddev->recovery) ||
test_bit(MD_RECOVERY_RECOVER, &mddev->recovery))
&& ((unsigned long long)mddev->curr_resync_completed
< (unsigned long long)mddev->resync_max_sectors))
goto skip;
}
if (test_bit(MD_RECOVERY_SYNC, &mddev->recovery)) {
if (test_bit(MD_RECOVERY_CHECK, &mddev->recovery)) {
desc = "data-check";
@@ -8089,11 +8111,6 @@ void md_do_sync(struct md_thread *thread)
mddev->curr_resync_completed = mddev->curr_resync;
sysfs_notify(&mddev->kobj, NULL, "sync_completed");
}
/* tell personality and other nodes that we are finished */
if (mddev_is_clustered(mddev)) {
md_cluster_ops->resync_finish(mddev);
cluster_resync_finished = true;
}
mddev->pers->sync_request(mddev, max_sectors, &skipped);
if (!test_bit(MD_RECOVERY_CHECK, &mddev->recovery) &&
@@ -8130,12 +8147,18 @@ void md_do_sync(struct md_thread *thread)
}
}
skip:
set_bit(MD_CHANGE_DEVS, &mddev->flags);
if (mddev_is_clustered(mddev) &&
test_bit(MD_RECOVERY_INTR, &mddev->recovery) &&
!cluster_resync_finished)
ret == 0) {
/* set CHANGE_PENDING here since maybe another
* update is needed, so other nodes are informed */
set_mask_bits(&mddev->flags, 0,
BIT(MD_CHANGE_PENDING) | BIT(MD_CHANGE_DEVS));
md_wakeup_thread(mddev->thread);
wait_event(mddev->sb_wait,
!test_bit(MD_CHANGE_PENDING, &mddev->flags));
md_cluster_ops->resync_finish(mddev);
} else
set_bit(MD_CHANGE_DEVS, &mddev->flags);
spin_lock(&mddev->lock);
if (!test_bit(MD_RECOVERY_INTR, &mddev->recovery)) {
@@ -8226,18 +8249,9 @@ static void md_start_sync(struct work_struct *ws)
struct mddev *mddev = container_of(ws, struct mddev, del_work);
int ret = 0;
if (mddev_is_clustered(mddev)) {
ret = md_cluster_ops->resync_start(mddev);
if (ret) {
mddev->sync_thread = NULL;
goto out;
}
}
mddev->sync_thread = md_register_thread(md_do_sync,
mddev,
"resync");
out:
if (!mddev->sync_thread) {
if (!(mddev_is_clustered(mddev) && ret == -EAGAIN))
printk(KERN_ERR "%s: could not start resync"
@@ -8536,6 +8550,7 @@ EXPORT_SYMBOL(md_finish_reshape);
int rdev_set_badblocks(struct md_rdev *rdev, sector_t s, int sectors,
int is_new)
{
struct mddev *mddev = rdev->mddev;
int rv;
if (is_new)
s += rdev->new_data_offset;
@@ -8545,8 +8560,8 @@ int rdev_set_badblocks(struct md_rdev *rdev, sector_t s, int sectors,
if (rv == 0) {
/* Make sure they get written out promptly */
sysfs_notify_dirent_safe(rdev->sysfs_state);
set_bit(MD_CHANGE_CLEAN, &rdev->mddev->flags);
set_bit(MD_CHANGE_PENDING, &rdev->mddev->flags);
set_mask_bits(&mddev->flags, 0,
BIT(MD_CHANGE_CLEAN) | BIT(MD_CHANGE_PENDING));
md_wakeup_thread(rdev->mddev->thread);
return 1;
} else
@@ -8680,6 +8695,11 @@ static void check_sb_changes(struct mddev *mddev, struct md_rdev *rdev)
ret = remove_and_add_spares(mddev, rdev2);
pr_info("Activated spare: %s\n",
bdevname(rdev2->bdev,b));
/* wakeup mddev->thread here, so array could
* perform resync with the new activated disk */
set_bit(MD_RECOVERY_NEEDED, &mddev->recovery);
md_wakeup_thread(mddev->thread);
}
/* device faulty
* We just want to do the minimum to mark the disk