diff options
Diffstat (limited to 'bitmap-enable-booting-for-dm-md-raid1.patch')
| -rw-r--r-- | bitmap-enable-booting-for-dm-md-raid1.patch | 83 |
1 files changed, 0 insertions, 83 deletions
diff --git a/bitmap-enable-booting-for-dm-md-raid1.patch b/bitmap-enable-booting-for-dm-md-raid1.patch deleted file mode 100644 index 7b29e82f7304..000000000000 --- a/bitmap-enable-booting-for-dm-md-raid1.patch +++ /dev/null @@ -1,83 +0,0 @@ -Subject: [PATCH] Enable loading of bitmaps for dm-md-raid1. - -This is also a temporary hack to systems with junk in the rest -of the bitmap super (instead of zeroes) to boot. This is done by -checking mddev->sync_super (which is exclusively set by dm-raid) -is null. - -These changes also include zeroing of most bitmap pages while -allocating so we are sure that the junk is not coming from memory. - -Signed-off-by: Neil Brown <neilb@suse.de> -Signed-off-by: Goldwyn Rodrigues <rgoldwyn@suse.com> ---- -diff --git a/drivers/md/bitmap.c b/drivers/md/bitmap.c -index 135a090..dfa5ef3 100644 ---- a/drivers/md/bitmap.c -+++ b/drivers/md/bitmap.c -@@ -494,7 +494,7 @@ static int bitmap_new_disk_sb(struct bitmap *bitmap) - bitmap_super_t *sb; - unsigned long chunksize, daemon_sleep, write_behind; - -- bitmap->storage.sb_page = alloc_page(GFP_KERNEL); -+ bitmap->storage.sb_page = alloc_page(GFP_KERNEL | __GFP_ZERO); - if (bitmap->storage.sb_page == NULL) - return -ENOMEM; - bitmap->storage.sb_page->index = 0; -@@ -541,6 +541,7 @@ static int bitmap_new_disk_sb(struct bitmap *bitmap) - sb->state = cpu_to_le32(bitmap->flags); - bitmap->events_cleared = bitmap->mddev->events; - sb->events_cleared = cpu_to_le64(bitmap->mddev->events); -+ bitmap->mddev->bitmap_info.nodes = 0; - - kunmap_atomic(sb); - -@@ -568,7 +569,7 @@ static int bitmap_read_sb(struct bitmap *bitmap) - goto out_no_sb; - } - /* page 0 is the superblock, read it... */ -- sb_page = alloc_page(GFP_KERNEL); -+ sb_page = alloc_page(GFP_KERNEL | __GFP_ZERO); - if (!sb_page) - return -ENOMEM; - bitmap->storage.sb_page = sb_page; -@@ -611,8 +612,15 @@ re_read: - daemon_sleep = le32_to_cpu(sb->daemon_sleep) * HZ; - write_behind = le32_to_cpu(sb->write_behind); - sectors_reserved = le32_to_cpu(sb->sectors_reserved); -- nodes = le32_to_cpu(sb->nodes); -- strlcpy(bitmap->mddev->bitmap_info.cluster_name, sb->cluster_name, 64); -+ /* XXX: This is an ugly hack to ensure that we don't use clustering -+ in case dm-raid is in use and the nodes written in bitmap_sb -+ is erroneous. -+ */ -+ if (!bitmap->mddev->sync_super) { -+ nodes = le32_to_cpu(sb->nodes); -+ strlcpy(bitmap->mddev->bitmap_info.cluster_name, -+ sb->cluster_name, 64); -+ } - - /* verify that the bitmap-specific fields are valid */ - if (sb->magic != cpu_to_le32(BITMAP_MAGIC)) -@@ -649,7 +657,7 @@ re_read: - goto out; - } - events = le64_to_cpu(sb->events); -- if (!nodes && (events < bitmap->mddev->events)) { -+ if (err == 0 && !nodes && (events < bitmap->mddev->events)) { - printk(KERN_INFO - "%s: bitmap file is out of date (%llu < %llu) " - "-- forcing full recovery\n", -diff --git a/drivers/md/md.c b/drivers/md/md.c -index 4dbed4a..6bd8bc3 100644 ---- a/drivers/md/md.c -+++ b/drivers/md/md.c -@@ -7415,7 +7415,7 @@ int md_setup_cluster(struct mddev *mddev, int nodes) - err = request_module("md-cluster"); - if (err) { - pr_err("md-cluster module not found.\n"); -- return err; -+ return -ENOENT; - } - - spin_lock(&pers_lock); |