From b347af816ad2086c1dacf9f74973b82f83e877be Mon Sep 17 00:00:00 2001 From: Song Liu Date: Thu, 11 Aug 2016 17:14:45 -0700 Subject: md: do not count journal as spare in GET_ARRAY_INFO GET_ARRAY_INFO counts journal as spare (spare_disks), which is not accurate. This patch fixes this. Reported-by: Yi Zhang Signed-off-by: Song Liu Signed-off-by: Shaohua Li --- drivers/md/md.c | 3 +++ 1 file changed, 3 insertions(+) (limited to 'drivers/md/md.c') diff --git a/drivers/md/md.c b/drivers/md/md.c index 2c3ab6f5e6be..d750b52376b9 100644 --- a/drivers/md/md.c +++ b/drivers/md/md.c @@ -5851,6 +5851,9 @@ static int get_array_info(struct mddev *mddev, void __user *arg) working++; if (test_bit(In_sync, &rdev->flags)) insync++; + else if (test_bit(Journal, &rdev->flags)) + /* TODO: add journal count to md_u.h */ + ; else spare++; } -- cgit v1.2.3-70-g09d2 From 207efcd2b55e0460dfee35663fbb3d05efad990a Mon Sep 17 00:00:00 2001 From: Guoqing Jiang Date: Fri, 12 Aug 2016 13:42:40 +0800 Subject: md: remove obsolete ret in md_start_sync The ret is not needed anymore since we have already move resync_start into md_do_sync in commit 41a9a0d. Reviewed-by: NeilBrown Signed-off-by: Guoqing Jiang Signed-off-by: Shaohua Li --- drivers/md/md.c | 7 ++----- 1 file changed, 2 insertions(+), 5 deletions(-) (limited to 'drivers/md/md.c') diff --git a/drivers/md/md.c b/drivers/md/md.c index d750b52376b9..19d8e23bda5c 100644 --- a/drivers/md/md.c +++ b/drivers/md/md.c @@ -8278,16 +8278,13 @@ no_add: static void md_start_sync(struct work_struct *ws) { struct mddev *mddev = container_of(ws, struct mddev, del_work); - int ret = 0; mddev->sync_thread = md_register_thread(md_do_sync, mddev, "resync"); if (!mddev->sync_thread) { - if (!(mddev_is_clustered(mddev) && ret == -EAGAIN)) - printk(KERN_ERR "%s: could not start resync" - " thread...\n", - mdname(mddev)); + printk(KERN_ERR "%s: could not start resync thread...\n", + mdname(mddev)); /* leave the spares where they are, it shouldn't hurt */ clear_bit(MD_RECOVERY_SYNC, &mddev->recovery); clear_bit(MD_RECOVERY_RESHAPE, &mddev->recovery); -- cgit v1.2.3-70-g09d2 From c622ca543bff8e73efacf4dafa0cc9851ecea511 Mon Sep 17 00:00:00 2001 From: Artur Paszkiewicz Date: Tue, 16 Aug 2016 14:26:08 +0200 Subject: md: don't print the same repeated messages about delayed sync operation This fixes a long-standing bug that caused a flood of messages like: "md: delaying data-check of md1 until md2 has finished (they share one or more physical units)" It can be reproduced like this: 1. Create at least 3 raid1 arrays on a pair of disks, each on different partitions. 2. Request a sync operation like 'check' or 'repair' on 2 arrays by writing to their md/sync_action attribute files. One operation should start and one should be delayed and a message like the above will be printed. 3. Issue a write to the third array. Each write will cause 2 copies of the message to be printed. This happens when wake_up(&resync_wait) is called, usually by md_check_recovery(). Then the delayed sync thread again prints the message and is put to sleep. This patch adds a check in md_do_sync() to prevent printing this message more than once for the same pair of devices. Reported-by: Sven Koehler Link: https://bugzilla.kernel.org/show_bug.cgi?id=151801 Signed-off-by: Artur Paszkiewicz Signed-off-by: Shaohua Li --- drivers/md/md.c | 13 +++++++++---- 1 file changed, 9 insertions(+), 4 deletions(-) (limited to 'drivers/md/md.c') diff --git a/drivers/md/md.c b/drivers/md/md.c index 19d8e23bda5c..cc25cbcf10b2 100644 --- a/drivers/md/md.c +++ b/drivers/md/md.c @@ -7865,6 +7865,7 @@ void md_do_sync(struct md_thread *thread) */ do { + int mddev2_minor = -1; mddev->curr_resync = 2; try_again: @@ -7894,10 +7895,14 @@ void md_do_sync(struct md_thread *thread) prepare_to_wait(&resync_wait, &wq, TASK_INTERRUPTIBLE); if (!test_bit(MD_RECOVERY_INTR, &mddev->recovery) && mddev2->curr_resync >= mddev->curr_resync) { - printk(KERN_INFO "md: delaying %s of %s" - " until %s has finished (they" - " share one or more physical units)\n", - desc, mdname(mddev), mdname(mddev2)); + if (mddev2_minor != mddev2->md_minor) { + mddev2_minor = mddev2->md_minor; + printk(KERN_INFO "md: delaying %s of %s" + " until %s has finished (they" + " share one or more physical units)\n", + desc, mdname(mddev), + mdname(mddev2)); + } mddev_put(mddev2); if (signal_pending(current)) flush_signals(current); -- cgit v1.2.3-70-g09d2 From 486b0f7bcd64be027535811ef44195bc1027fbd3 Mon Sep 17 00:00:00 2001 From: Song Liu Date: Fri, 19 Aug 2016 15:34:01 -0700 Subject: r5cache: set MD_JOURNAL_CLEAN correctly Currently, the code sets MD_JOURNAL_CLEAN when the array has MD_FEATURE_JOURNAL and the recovery_cp is MaxSector. The array will be MD_JOURNAL_CLEAN even if the journal device is missing. With this patch, the MD_JOURNAL_CLEAN is only set when the journal device presents. Signed-off-by: Song Liu Signed-off-by: Shaohua Li --- drivers/md/md.c | 5 +---- drivers/md/raid5.c | 13 ++++++++----- 2 files changed, 9 insertions(+), 9 deletions(-) (limited to 'drivers/md/md.c') diff --git a/drivers/md/md.c b/drivers/md/md.c index cc25cbcf10b2..4f6cf3b849e3 100644 --- a/drivers/md/md.c +++ b/drivers/md/md.c @@ -1604,11 +1604,8 @@ static int super_1_validate(struct mddev *mddev, struct md_rdev *rdev) mddev->new_chunk_sectors = mddev->chunk_sectors; } - if (le32_to_cpu(sb->feature_map) & MD_FEATURE_JOURNAL) { + if (le32_to_cpu(sb->feature_map) & MD_FEATURE_JOURNAL) set_bit(MD_HAS_JOURNAL, &mddev->flags); - if (mddev->recovery_cp == MaxSector) - set_bit(MD_JOURNAL_CLEAN, &mddev->flags); - } } else if (mddev->pers == NULL) { /* Insist of good event counter while assembling, except for * spares (which don't need an event count) */ diff --git a/drivers/md/raid5.c b/drivers/md/raid5.c index 4f8f5242ea3b..2119e094dfb3 100644 --- a/drivers/md/raid5.c +++ b/drivers/md/raid5.c @@ -6840,11 +6840,14 @@ static int raid5_run(struct mddev *mddev) if (IS_ERR(conf)) return PTR_ERR(conf); - if (test_bit(MD_HAS_JOURNAL, &mddev->flags) && !journal_dev) { - printk(KERN_ERR "md/raid:%s: journal disk is missing, force array readonly\n", - mdname(mddev)); - mddev->ro = 1; - set_disk_ro(mddev->gendisk, 1); + if (test_bit(MD_HAS_JOURNAL, &mddev->flags)) { + if (!journal_dev) { + pr_err("md/raid:%s: journal disk is missing, force array readonly\n", + mdname(mddev)); + mddev->ro = 1; + set_disk_ro(mddev->gendisk, 1); + } else if (mddev->recovery_cp == MaxSector) + set_bit(MD_JOURNAL_CLEAN, &mddev->flags); } conf->min_offset_diff = min_offset_diff; -- cgit v1.2.3-70-g09d2 From 47a7b0d8888c04c9746812820b6e60553cc77bbc Mon Sep 17 00:00:00 2001 From: Guoqing Jiang Date: Sun, 4 Sep 2016 22:17:28 -0400 Subject: md-cluster: make md-cluster also can work when compiled into kernel The md-cluster is compiled as module by default, if it is compiled by built-in way, then we can't make md-cluster works. [64782.630008] md/raid1:md127: active with 2 out of 2 mirrors [64782.630528] md-cluster module not found. [64782.630530] md127: Could not setup cluster service (-2) Fixes: edb39c9 ("Introduce md_cluster_operations to handle cluster functions") Cc: stable@vger.kernel.org (v4.1+) Reported-by: Marc Smith Reviewed-by: NeilBrown Signed-off-by: Guoqing Jiang Signed-off-by: Shaohua Li --- drivers/md/md.c | 12 ++++-------- 1 file changed, 4 insertions(+), 8 deletions(-) (limited to 'drivers/md/md.c') diff --git a/drivers/md/md.c b/drivers/md/md.c index 67642bacd597..915e84d631a2 100644 --- a/drivers/md/md.c +++ b/drivers/md/md.c @@ -7610,16 +7610,12 @@ EXPORT_SYMBOL(unregister_md_cluster_operations); int md_setup_cluster(struct mddev *mddev, int nodes) { - int err; - - err = request_module("md-cluster"); - if (err) { - pr_err("md-cluster module not found.\n"); - return -ENOENT; - } - + if (!md_cluster_ops) + request_module("md-cluster"); spin_lock(&pers_lock); + /* ensure module won't be unloaded */ if (!md_cluster_ops || !try_module_get(md_cluster_mod)) { + pr_err("can't find md-cluster module or get it's reference.\n"); spin_unlock(&pers_lock); return -ENOENT; } -- cgit v1.2.3-70-g09d2