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path: root/fs/btrfs/volumes.c
AgeCommit message (Collapse)Author
2008-09-25Btrfs: Add new ioctl to add devicesChris Mason
Signed-off-by: Chris Mason <chris.mason@oracle.com>
2008-09-25Btrfs: Make the resizer work based on shrinking and growing devicesChris Mason
Signed-off-by: Chris Mason <chris.mason@oracle.com>
2008-09-25Btrfs: Add failure handling for read_sys_arrayChris Mason
Signed-off-by: Chris Mason <chris.mason@oracle.com>
2008-09-25Fix btrfs_get_extent and get_block corner cases, and disable O_DIRECT readsChris Mason
The generic O_DIRECT code assumes all the bios have the same bdev, which isn't true for multi-device btrfs. Signed-off-by: Chris Mason <chris.mason@oracle.com>
2008-09-25Btrfs: Add a special device list for chunk allocationsChris Mason
This allows other code that needs to walk every device in the FS to do so without locking against allocations. Signed-off-by: Chris Mason <chris.mason@oracle.com>
2008-09-25Btrfs: Simplify device selection for mirrored readsChris Mason
Signed-off-by: Chris Mason <chris.mason@oracle.com>
2008-09-25Btrfs: Make an unplug function that doesn't unplug every spindleChris Mason
Signed-off-by: Chris Mason <chris.mason@oracle.com>
2008-09-25Btrfs: Add 1MB to the min_free in alloc_chunkChris Mason
This properly reflects the first 1MB we skip at the start of the device Signed-off-by: Chris Mason <chris.mason@oracle.com>
2008-09-25Btrfs: Fix chunk allocation when some devices don't have enough room for stripesChris Mason
Signed-off-by: Chris Mason <chris.mason@oracle.com>
2008-09-25Btrfs: Calculate appropriate chunk sizes for both small and large filesystemsChris Mason
Signed-off-by: Chris Mason <chris.mason@oracle.com>
2008-09-25Btrfs: Add support for labels in the super blockChris Mason
Signed-off-by: Chris Mason <chris.mason@oracle.com>
2008-09-25Btrfs: Check device uuids along with devidsChris Mason
Signed-off-by: Chris Mason <chris.mason@oracle.com>
2008-09-25Btrfs: Avoid 64 bit div for RAID10Chris Mason
Signed-off-by: Chris Mason <chris.mason@oracle.com>
2008-09-25Btrfs: Use the extent map cache to find the logical disk block during data ↵Chris Mason
retries The data read retry code needs to find the logical disk block before it can resubmit new bios. But, finding this block isn't allowed to take the fs_mutex because that will deadlock with a number of different callers. This changes the retry code to use the extent map cache instead, but that requires the extent map cache to have the extent we're looking for. This is a problem because btrfs_drop_extent_cache just drops the entire extent instead of the little tiny part it is invalidating. The bulk of the code in this patch changes btrfs_drop_extent_cache to invalidate only a portion of the extent cache, and changes btrfs_get_extent to deal with the results. Signed-off-by: Chris Mason <chris.mason@oracle.com>
2008-09-25Btrfs: Add RAID10 supportChris Mason
Signed-off-by: Chris Mason <chris.mason@oracle.com>
2008-09-25Btrfs: Add chunk uuids and update multi-device back referencesChris Mason
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>
2008-09-25Btrfs: A few updates for 2.6.18 and versions older than 2.6.25Chris Mason
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>
2008-09-25Btrfs: bio_endio support for linux 2.6.23 and older.Miguel
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>
2008-09-25Btrfs: Write out all super blocks on commit, and bring back proper barrier ↵Chris Mason
support Signed-off-by: Chris Mason <chris.mason@oracle.com>
2008-09-25Btrfs: Retry metadata reads in the face of checksum failuresChris Mason
Signed-off-by: Chris Mason <chris.mason@oracle.com>
2008-09-25Change btrfs_map_block to return a structure with mappings for all stripesChris Mason
Signed-off-by: Chris Mason <chris.mason@oracle.com>
2008-09-25Btrfs: Add support for duplicate blocks on a single spindleChris Mason
Signed-off-by: Chris Mason <chris.mason@oracle.com>
2008-09-25Btrfs: Add support for mirroring across drivesChris Mason
Signed-off-by: Chris Mason <chris.mason@oracle.com>
2008-09-25Fix btrfs_fill_super to return -EINVAL when no FS foundYan
Signed-off-by: Chris Mason <chris.mason@oracle.com>
2008-09-25Btrfs: Implement raid0 when multiple devices are presentChris Mason
Signed-off-by: Chris Mason <chris.mason@oracle.com>
2008-09-25Btrfs: Add support for device scanning and detection ioctlsChris Mason
Signed-off-by: Chris Mason <chris.mason@oracle.com>
2008-09-25Btrfs: Bring back mount -o ssd optimizationsChris Mason
Signed-off-by: Chris Mason <chris.mason@oracle.com>
2008-09-25Btrfs: Move device information into the super block so it can be scannedChris Mason
Signed-off-by: Chris Mason <chris.mason@oracle.com>
2008-09-25Btrfs: Dynamic chunk and block group allocationChris Mason
Signed-off-by: Chris Mason <chris.mason@oracle.com>
2008-09-25Btrfs: Add support for multiple devices per filesystemChris Mason
Signed-off-by: Chris Mason <chris.mason@oracle.com>
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