diff options
| author | Goldwyn Rodrigues <rgoldwyn@suse.com> | 2015-08-19 07:35:54 +1000 |
|---|---|---|
| committer | Goldwyn Rodrigues <rgoldwyn@suse.com> | 2015-10-12 01:31:33 -0500 |
| commit | 3c462c880b52aae2cfbbb8db8b401eef118cc128 (patch) | |
| tree | 47df3599c19db234cccf92933ab396926ee4b49b /include/uapi/linux/raid | |
| parent | 9ed38ff53090856769b99e9d2f19740fb11e6956 (diff) | |
md: Increment version for clustered bitmaps
Add BITMAP_MAJOR_CLUSTERED as 5, in order to prevent older kernels
to assemble a clustered device.
In order to maximize compatibility, the major version is set to
BITMAP_MAJOR_CLUSTERED *only* if the bitmap is clustered.
Added MD_FEATURE_CLUSTERED in order to return error for older
kernels which would assemble MD even if the bitmap is corrupted.
Signed-off-by: Goldwyn Rodrigues <rgoldwyn@suse.com>
Signed-off-by: NeilBrown <neilb@suse.com>
Diffstat (limited to 'include/uapi/linux/raid')
| -rw-r--r-- | include/uapi/linux/raid/md_p.h | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/include/uapi/linux/raid/md_p.h b/include/uapi/linux/raid/md_p.h index 2ae6131e69a5..867ee874fa80 100644 --- a/include/uapi/linux/raid/md_p.h +++ b/include/uapi/linux/raid/md_p.h @@ -302,6 +302,7 @@ struct mdp_superblock_1 { #define MD_FEATURE_RECOVERY_BITMAP 128 /* recovery that is happening * is guided by bitmap. */ +#define MD_FEATURE_CLUSTERED 256 /* clustered MD */ #define MD_FEATURE_ALL (MD_FEATURE_BITMAP_OFFSET \ |MD_FEATURE_RECOVERY_OFFSET \ |MD_FEATURE_RESHAPE_ACTIVE \ @@ -310,6 +311,7 @@ struct mdp_superblock_1 { |MD_FEATURE_RESHAPE_BACKWARDS \ |MD_FEATURE_NEW_OFFSET \ |MD_FEATURE_RECOVERY_BITMAP \ + |MD_FEATURE_CLUSTERED \ ) #endif |