forked from Minki/linux
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>
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@ -15,15 +15,30 @@
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#include <linux/types.h>
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/* For format version 2, rbd image 'foo' consists of objects
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* rbd_id.foo - id of image
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* rbd_header.<id> - image metadata
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* rbd_data.<id>.0000000000000000
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* rbd_data.<id>.0000000000000001
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* ... - data
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* Clients do not access header data directly in rbd format 2.
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*/
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#define RBD_HEADER_PREFIX "rbd_header."
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#define RBD_DATA_PREFIX "rbd_data."
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#define RBD_ID_PREFIX "rbd_id."
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/*
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* rbd image 'foo' consists of objects
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* foo.rbd - image metadata
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* foo.00000000
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* foo.00000001
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* ... - data
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* For format version 1, rbd image 'foo' consists of objects
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* foo.rbd - image metadata
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* rb.<idhi>.<idlo>.00000000
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* rb.<idhi>.<idlo>.00000001
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* ... - data
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* There is no notion of a persistent image id in rbd format 1.
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*/
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#define RBD_SUFFIX ".rbd"
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#define RBD_DIRECTORY "rbd_directory"
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#define RBD_INFO "rbd_info"
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