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authorIlya Dryomov <idryomov@gmail.com>2012-01-17 00:04:47 +0400
committerIlya Dryomov <idryomov@gmail.com>2012-01-17 00:04:47 +0400
commitc9e9f97bdfb64d06e9520f8e4f37674ac21cc9bc (patch)
tree22d695a7a461068c773b327e5c89a045ade5d8a3 /fs/btrfs/ioctl.h
parent10ea00f55a07f8f9536d9112b95108a86f700bab (diff)
downloadlinux-c9e9f97bdfb64d06e9520f8e4f37674ac21cc9bc.tar.xz
Btrfs: add basic restriper infrastructure
Add basic restriper infrastructure: extended balancing ioctl and all related ioctl data structures, add data structure for tracking restriper's state to fs_info, etc. The semantics of the old balancing ioctl are fully preserved. Explicitly disallow any volume operations when balance is in progress. Signed-off-by: Ilya Dryomov <idryomov@gmail.com>
Diffstat (limited to 'fs/btrfs/ioctl.h')
-rw-r--r--fs/btrfs/ioctl.h43
1 files changed, 43 insertions, 0 deletions
diff --git a/fs/btrfs/ioctl.h b/fs/btrfs/ioctl.h
index 252ae9915de8..c8b37d2c0d77 100644
--- a/fs/btrfs/ioctl.h
+++ b/fs/btrfs/ioctl.h
@@ -109,6 +109,47 @@ struct btrfs_ioctl_fs_info_args {
__u64 reserved[124]; /* pad to 1k */
};
+/*
+ * this is packed, because it should be exactly the same as its disk
+ * byte order counterpart (struct btrfs_disk_balance_args)
+ */
+struct btrfs_balance_args {
+ __u64 profiles;
+ __u64 usage;
+ __u64 devid;
+ __u64 pstart;
+ __u64 pend;
+ __u64 vstart;
+ __u64 vend;
+
+ __u64 target;
+
+ __u64 flags;
+
+ __u64 unused[8];
+} __attribute__ ((__packed__));
+
+/* report balance progress to userspace */
+struct btrfs_balance_progress {
+ __u64 expected; /* estimated # of chunks that will be
+ * relocated to fulfill the request */
+ __u64 considered; /* # of chunks we have considered so far */
+ __u64 completed; /* # of chunks relocated so far */
+};
+
+struct btrfs_ioctl_balance_args {
+ __u64 flags; /* in/out */
+ __u64 state; /* out */
+
+ struct btrfs_balance_args data; /* in/out */
+ struct btrfs_balance_args meta; /* in/out */
+ struct btrfs_balance_args sys; /* in/out */
+
+ struct btrfs_balance_progress stat; /* out */
+
+ __u64 unused[72]; /* pad to 1k */
+};
+
#define BTRFS_INO_LOOKUP_PATH_MAX 4080
struct btrfs_ioctl_ino_lookup_args {
__u64 treeid;
@@ -272,6 +313,8 @@ struct btrfs_ioctl_logical_ino_args {
struct btrfs_ioctl_dev_info_args)
#define BTRFS_IOC_FS_INFO _IOR(BTRFS_IOCTL_MAGIC, 31, \
struct btrfs_ioctl_fs_info_args)
+#define BTRFS_IOC_BALANCE_V2 _IOWR(BTRFS_IOCTL_MAGIC, 32, \
+ struct btrfs_ioctl_balance_args)
#define BTRFS_IOC_INO_PATHS _IOWR(BTRFS_IOCTL_MAGIC, 35, \
struct btrfs_ioctl_ino_path_args)
#define BTRFS_IOC_LOGICAL_INO _IOWR(BTRFS_IOCTL_MAGIC, 36, \