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Initial work on cloud log-structured storage.
[bluesky.git]
/
bluesky
/
bluesky.h
diff --git
a/bluesky/bluesky.h
b/bluesky/bluesky.h
index
beec075
..
9543d9c
100644
(file)
--- a/
bluesky/bluesky.h
+++ b/
bluesky/bluesky.h
@@
-146,6
+146,10
@@
typedef struct {
/* Mutex for the flush daemon, to prevent concurrent execution. */
GMutex *flushd_lock;
/* Mutex for the flush daemon, to prevent concurrent execution. */
GMutex *flushd_lock;
+
+ /* Mapping of object identifiers (blocks, inodes) to physical location (in
+ * the local cache or in the logs in the cloud). */
+ GHashTable *locations;
} BlueSkyFS;
/* Inode number of the root directory. */
} BlueSkyFS;
/* Inode number of the root directory. */
@@
-195,8
+199,9
@@
typedef struct {
/* change_count is increased with every operation which modifies the inode,
* and can be used to determine if cached data is still valid.
* change_commit is the value of change_count when the inode was last
/* change_count is increased with every operation which modifies the inode,
* and can be used to determine if cached data is still valid.
* change_commit is the value of change_count when the inode was last
- * committed to stable storage. */
- uint64_t change_count, change_commit;
+ * committed to stable storage (the log).
+ * change_cloud tracks which version was last commited to cloud storage. */
+ uint64_t change_count, change_commit, change_cloud;
/* Timestamp for controlling when modified data is flushed to stable
* storage. When an inode is first modified from a clean state, this is
/* Timestamp for controlling when modified data is flushed to stable
* storage. When an inode is first modified from a clean state, this is