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| author | Alex Elder <elder@inktank.com> | 2012-07-11 05:30:10 +0400 |
|---|---|---|
| committer | Alex Elder <elder@inktank.com> | 2012-10-01 23:30:53 +0400 |
| commit | 3bb59ad515527fa75cf71d997d17cea18160da74 (patch) | |
| tree | f93f9b6f42df400e2b989e1c9d24c3f0f77b83a9 /drivers/block | |
| parent | f8d4de6e1c939d56f1ee0a21ad677401846f990c (diff) | |
| download | linux-3bb59ad515527fa75cf71d997d17cea18160da74.tar.xz | |
rbd: define some new format constants
Define constant symbols related to the rbd format 2 object names.
This begins to bring this version of the "rbd_types.h" header
more in line with the current user-space version of that file.
Complete reconciliation of differences will be done at some
point later, as a separate task.
Signed-off-by: Alex Elder <elder@inktank.com>
Reviewed-by: Josh Durgin <josh.durgin@inktank.com>
Diffstat (limited to 'drivers/block')
| -rw-r--r-- | drivers/block/rbd_types.h | 25 |
1 files changed, 20 insertions, 5 deletions
diff --git a/drivers/block/rbd_types.h b/drivers/block/rbd_types.h index d9d8a77748bc..cbe77fa105ba 100644 --- a/drivers/block/rbd_types.h +++ b/drivers/block/rbd_types.h @@ -15,15 +15,30 @@ #include <linux/types.h> +/* For format version 2, rbd image 'foo' consists of objects + * rbd_id.foo - id of image + * rbd_header.<id> - image metadata + * rbd_data.<id>.0000000000000000 + * rbd_data.<id>.0000000000000001 + * ... - data + * Clients do not access header data directly in rbd format 2. + */ + +#define RBD_HEADER_PREFIX "rbd_header." +#define RBD_DATA_PREFIX "rbd_data." +#define RBD_ID_PREFIX "rbd_id." + /* - * rbd image 'foo' consists of objects - * foo.rbd - image metadata - * foo.00000000 - * foo.00000001 - * ... - data + * For format version 1, rbd image 'foo' consists of objects + * foo.rbd - image metadata + * rb.<idhi>.<idlo>.00000000 + * rb.<idhi>.<idlo>.00000001 + * ... - data + * There is no notion of a persistent image id in rbd format 1. */ #define RBD_SUFFIX ".rbd" + #define RBD_DIRECTORY "rbd_directory" #define RBD_INFO "rbd_info" |