e17cade25f
Btrfs: Add chunk uuids and update multi-device back references
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Block headers now store the chunk tree uuid
Chunk items records the device uuid for each stripes
Device extent items record better back refs to the chunk tree
Block groups record better back refs to the chunk tree
The chunk tree format has also changed. The objectid of BTRFS_CHUNK_ITEM_KEY
used to be the logical offset of the chunk. Now it is a chunk tree id,
with the logical offset being stored in the offset field of the key.
This allows a single chunk tree to record multiple logical address spaces,
upping the number of bytes indexed by a chunk tree from 2^64 to
2^128.
Signed-off-by: Chris Mason <chris.mason@oracle.com>
2008-09-25 11:04:01 -04:00
b248a41529
Btrfs: A few updates for 2.6.18 and versions older than 2.6.25
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This includes fixing a missing spinlock init call that caused oops on mount
for most kernels other than 2.6.25.
Signed-off-by: Chris Mason <chris.mason@oracle.com>
2008-09-25 11:04:01 -04:00
73f61b2a64
Btrfs: bio_endio support for linux 2.6.23 and older.
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bio_endio() changed prototype on linux 2.6.24, support older kernels
using the older prototype.
Signed-off-by: Chris Mason <chris.mason@oracle.com>
2008-09-25 11:04:01 -04:00
f29844623d
Btrfs: Write out all super blocks on commit, and bring back proper barrier support
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Signed-off-by: Chris Mason <chris.mason@oracle.com>
2008-09-25 11:04:01 -04:00
f188591e98
Btrfs: Retry metadata reads in the face of checksum failures
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Signed-off-by: Chris Mason <chris.mason@oracle.com>
2008-09-25 11:04:01 -04:00
cea9e4452e
Change btrfs_map_block to return a structure with mappings for all stripes
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Signed-off-by: Chris Mason <chris.mason@oracle.com>
2008-09-25 11:04:01 -04:00
611f0e00a2
Btrfs: Add support for duplicate blocks on a single spindle
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Signed-off-by: Chris Mason <chris.mason@oracle.com>
2008-09-25 11:04:01 -04:00
8790d502e4
Btrfs: Add support for mirroring across drives
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Signed-off-by: Chris Mason <chris.mason@oracle.com>
2008-09-25 11:04:01 -04:00
e58ca0203d
Fix btrfs_fill_super to return -EINVAL when no FS found
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Signed-off-by: Chris Mason <chris.mason@oracle.com>
2008-09-25 11:04:01 -04:00
593060d756
Btrfs: Implement raid0 when multiple devices are present
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Signed-off-by: Chris Mason <chris.mason@oracle.com>
2008-09-25 11:04:01 -04:00
8a4b83cc8b
Btrfs: Add support for device scanning and detection ioctls
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Signed-off-by: Chris Mason <chris.mason@oracle.com>
2008-09-25 11:04:01 -04:00
239b14b32d
Btrfs: Bring back mount -o ssd optimizations
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Signed-off-by: Chris Mason <chris.mason@oracle.com>
2008-09-25 11:04:01 -04:00
0d81ba5dbe
Btrfs: Move device information into the super block so it can be scanned
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Signed-off-by: Chris Mason <chris.mason@oracle.com>
2008-09-25 11:04:01 -04:00
6324fbf334
Btrfs: Dynamic chunk and block group allocation
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Signed-off-by: Chris Mason <chris.mason@oracle.com>
2008-09-25 11:04:01 -04:00
0b86a832a1
Btrfs: Add support for multiple devices per filesystem
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Signed-off-by: Chris Mason <chris.mason@oracle.com>
2008-09-25 11:04:00 -04:00
Chris Mason