From: Anand Jain <anand.j...@oracle.com> Add BTRFS_FEATURE_INCOMPAT_SPARE_DEV (400) flag to identify a spare device.
Along with this it checks in the mount context that a spare device will fail to mount. As spare devices aren't mountable. Signed-off-by: Anand Jain <anand.j...@oracle.com> Tested-by: Austin S. Hemmelgarn <ahferro...@gmail.com> --- fs/btrfs/ctree.h | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) diff --git a/fs/btrfs/ctree.h b/fs/btrfs/ctree.h index e0a50f478e01..2c185a8e92f0 100644 --- a/fs/btrfs/ctree.h +++ b/fs/btrfs/ctree.h @@ -531,6 +531,7 @@ struct btrfs_super_block { #define BTRFS_FEATURE_INCOMPAT_RAID56 (1ULL << 7) #define BTRFS_FEATURE_INCOMPAT_SKINNY_METADATA (1ULL << 8) #define BTRFS_FEATURE_INCOMPAT_NO_HOLES (1ULL << 9) +#define BTRFS_FEATURE_INCOMPAT_SPARE_DEV (1ULL << 10) #define BTRFS_FEATURE_COMPAT_SUPP 0ULL #define BTRFS_FEATURE_COMPAT_SAFE_SET 0ULL @@ -551,7 +552,8 @@ struct btrfs_super_block { BTRFS_FEATURE_INCOMPAT_RAID56 | \ BTRFS_FEATURE_INCOMPAT_EXTENDED_IREF | \ BTRFS_FEATURE_INCOMPAT_SKINNY_METADATA | \ - BTRFS_FEATURE_INCOMPAT_NO_HOLES) + BTRFS_FEATURE_INCOMPAT_NO_HOLES | \ + BTRFS_FEATURE_INCOMPAT_SPARE_DEV) #define BTRFS_FEATURE_INCOMPAT_SAFE_SET \ (BTRFS_FEATURE_INCOMPAT_EXTENDED_IREF) -- 2.7.0 -- To unsubscribe from this list: send the line "unsubscribe linux-btrfs" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html