On Wed, Nov 25, 2015 at 08:08:15PM +0800, Anand Jain wrote:
> We should have maintained feature's name same across progs UI and sysfs UI.
> For example, progs mixed-bg is /sys/fs/btrfs/features/mixed_groups
> in sysfs. As these are already released and is UIs, there is nothing much
> can be done about it, except for creating the alias and making it aware.
>
> Add kernel alias for each of the features in the list.
>
> eg: The string with in () is the sysfs name for the same feaure
>
> mkfs.btrfs -O list-all
> Filesystem features available:
> mixed-bg (mixed_groups) - mixed data and metadata block groups
> (0x4, 2.7.37)
> extref (extended_iref) - increased hardlink limit per file to
> 65536 (0x40, 3.7, default)
> raid56 (raid56) - raid56 extended format (0x80, 3.9)
> skinny-metadata (skinny_metadata) - reduced-size metadata extent refs (0x100,
> 3.10, default)
> no-holes (no_holes) - no explicit hole extents for files
> (0x200, 3.14)
>
> btrfs-convert -O list-all
> Filesystem features available:
> extref (extended_iref) - increased hardlink limit per file to
> 65536 (0x40, 3.7, default)
> skinny-metadata (skinny_metadata) - reduced-size metadata extent refs (0x100,
> 3.10, default)
> no-holes (no_holes) - no explicit hole extents for files
> (0x200, 3.14)
You miss a signed-off-by here.
Thanks,
-liubo
> ---
> utils.c | 13 +++++++++++--
> 1 file changed, 11 insertions(+), 2 deletions(-)
>
> diff --git a/utils.c b/utils.c
> index 0163915..6d2675d 100644
> --- a/utils.c
> +++ b/utils.c
> @@ -648,17 +648,26 @@ void btrfs_process_fs_features(u64 flags)
> void btrfs_list_all_fs_features(u64 mask_disallowed)
> {
> int i;
> + u64 feature_per_sysfs;
> +
> + btrfs_features_allowed_by_sysfs(&feature_per_sysfs);
>
> fprintf(stderr, "Filesystem features available:\n");
> for (i = 0; i < ARRAY_SIZE(mkfs_features) - 1; i++) {
> char *is_default = "";
> + char name[256];
>
> if (mkfs_features[i].flag & mask_disallowed)
> continue;
> if (mkfs_features[i].flag & BTRFS_MKFS_DEFAULT_FEATURES)
> is_default = ", default";
> - fprintf(stderr, "%-20s- %s (0x%llx, %s%s)\n",
> - mkfs_features[i].name,
> + if (mkfs_features[i].flag & feature_per_sysfs)
> + sprintf(name, "%s (%s)",
> + mkfs_features[i].name,
> mkfs_features[i].name_ker);
> + else
> + sprintf(name, "%s", mkfs_features[i].name);
> + fprintf(stderr, "%-34s- %s (0x%llx, %s%s)\n",
> + name,
> mkfs_features[i].desc,
> mkfs_features[i].flag,
> mkfs_features[i].min_ker_ver,
> --
> 2.6.2
>
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