md: ensure changes to 'write-mostly' are reflected in metadata. (aeb9b211) · Commits · 戴 / test

The 'write-mostly' flag can be changed through sysfs. With 0.90 metadata, those changes are reflected in the metadata. For 1.x metadata, they aren't. So fix super_1_sync to record 'write-mostly' status. Signed-off-by:

NeilBrown <neilb@suse.de>

drivers/md/md.c

+5 −0

Original line number	Diff line number	Diff line
		@@ -1738,6 +1738,11 @@ static void super_1_sync(mddev_t mddev, mdk_rdev_t rdev)
		sb->level = cpu_to_le32(mddev->level);
		sb->layout = cpu_to_le32(mddev->layout);

		if (test_bit(WriteMostly, &rdev->flags))
		sb->devflags \|= WriteMostly1;
		else
		sb->devflags &= ~WriteMostly1;

		if (mddev->bitmap && mddev->bitmap_info.file == NULL) {
		sb->bitmap_offset = cpu_to_le32((__u32)mddev->bitmap_info.offset);
		sb->feature_map = cpu_to_le32(MD_FEATURE_BITMAP_OFFSET);

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