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255,118 Commits 7 Branches 861 Tags 6.5 GiB
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185 Commits

Author SHA1 Message Date
Chris Mason
006a58a25f Btrfs: Compile warning fixup in volume.c 
Signed-off-by: Chris Mason <chris.mason@oracle.com>
 2008-09-25 11:04:02 -04:00
Chris Mason
2fff734faf Btrfs: Tune stripe selection for raid1 and raid10 
Signed-off-by: Chris Mason <chris.mason@oracle.com>
 2008-09-25 11:04:02 -04:00
Chris Mason
a236aed14c Btrfs: Deal with failed writes in mirrored configurations 
Signed-off-by: Chris Mason <chris.mason@oracle.com>
 2008-09-25 11:04:02 -04:00
Chris Mason
4235298e4f Btrfs: Drop some verbose printks 
Signed-off-by: Chris Mason <chris.mason@oracle.com>
 2008-09-25 11:04:02 -04:00
Chris Mason
ec44a35cbe Btrfs: Add balance ioctl to restripe the chunks 
Signed-off-by: Chris Mason <chris.mason@oracle.com>
 2008-09-25 11:04:02 -04:00
Chris Mason
788f20eb5a Btrfs: Add new ioctl to add devices 
Signed-off-by: Chris Mason <chris.mason@oracle.com>
 2008-09-25 11:04:02 -04:00
Chris Mason
8f18cf1339 Btrfs: Make the resizer work based on shrinking and growing devices 
Signed-off-by: Chris Mason <chris.mason@oracle.com>
 2008-09-25 11:04:02 -04:00
Chris Mason
84eed90fac Btrfs: Add failure handling for read_sys_array 
Signed-off-by: Chris Mason <chris.mason@oracle.com>
 2008-09-25 11:04:02 -04:00
Chris Mason
e1c4b7451e Fix btrfs_get_extent and get_block corner cases, and disable O_DIRECT reads 
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>
 2008-09-25 11:04:02 -04:00
Chris Mason
b30757178d Btrfs: Add a special device list for chunk allocations 
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>
 2008-09-25 11:04:02 -04:00
Chris Mason
3c12ac7205 Btrfs: Simplify device selection for mirrored reads 
Signed-off-by: Chris Mason <chris.mason@oracle.com>
 2008-09-25 11:04:02 -04:00
Chris Mason
f2d8d74d78 Btrfs: Make an unplug function that doesn't unplug every spindle 
Signed-off-by: Chris Mason <chris.mason@oracle.com>
 2008-09-25 11:04:02 -04:00
Chris Mason
ad5bd91ece Btrfs: Add 1MB to the min_free in alloc_chunk 
This properly reflects the first 1MB we skip at the start of the device

Signed-off-by: Chris Mason <chris.mason@oracle.com>
 2008-09-25 11:04:02 -04:00
Chris Mason
a40a90a042 Btrfs: Fix chunk allocation when some devices don't have enough room for stripes 
Signed-off-by: Chris Mason <chris.mason@oracle.com>
 2008-09-25 11:04:02 -04:00
Chris Mason
9b3f68b906 Btrfs: Calculate appropriate chunk sizes for both small and large filesystems 
Signed-off-by: Chris Mason <chris.mason@oracle.com>
 2008-09-25 11:04:02 -04:00
Chris Mason
7ae9c09d8f Btrfs: Add support for labels in the super block 
Signed-off-by: Chris Mason <chris.mason@oracle.com>
 2008-09-25 11:04:02 -04:00
Chris Mason
a443755f1c Btrfs: Check device uuids along with devids 
Signed-off-by: Chris Mason <chris.mason@oracle.com>
 2008-09-25 11:04:02 -04:00
Chris Mason
7bf3b490df Btrfs: Avoid 64 bit div for RAID10 
Signed-off-by: Chris Mason <chris.mason@oracle.com>
 2008-09-25 11:04:02 -04:00
Chris Mason
3b951516ed Btrfs: Use the extent map cache to find the logical disk block during data 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>
 2008-09-25 11:04:01 -04:00
Chris Mason
321aecc656 Btrfs: Add RAID10 support 
Signed-off-by: Chris Mason <chris.mason@oracle.com>
 2008-09-25 11:04:01 -04:00
Chris Mason
e17cade25f Btrfs: Add chunk uuids and update multi-device back references 
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
Chris Mason
b248a41529 Btrfs: A few updates for 2.6.18 and versions older than 2.6.25 
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
Miguel
73f61b2a64 Btrfs: bio_endio support for linux 2.6.23 and older. 
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
Chris Mason
f29844623d Btrfs: Write out all super blocks on commit, and bring back proper barrier support 
Signed-off-by: Chris Mason <chris.mason@oracle.com>
 2008-09-25 11:04:01 -04:00
Chris Mason
f188591e98 Btrfs: Retry metadata reads in the face of checksum failures 
Signed-off-by: Chris Mason <chris.mason@oracle.com>
 2008-09-25 11:04:01 -04:00
Chris Mason
cea9e4452e Change btrfs_map_block to return a structure with mappings for all stripes 
Signed-off-by: Chris Mason <chris.mason@oracle.com>
 2008-09-25 11:04:01 -04:00
Chris Mason
611f0e00a2 Btrfs: Add support for duplicate blocks on a single spindle 
Signed-off-by: Chris Mason <chris.mason@oracle.com>
 2008-09-25 11:04:01 -04:00
Chris Mason
8790d502e4 Btrfs: Add support for mirroring across drives 
Signed-off-by: Chris Mason <chris.mason@oracle.com>
 2008-09-25 11:04:01 -04:00
Yan
e58ca0203d Fix btrfs_fill_super to return -EINVAL when no FS found 
Signed-off-by: Chris Mason <chris.mason@oracle.com>
 2008-09-25 11:04:01 -04:00
Chris Mason
593060d756 Btrfs: Implement raid0 when multiple devices are present 
Signed-off-by: Chris Mason <chris.mason@oracle.com>
 2008-09-25 11:04:01 -04:00
Chris Mason
8a4b83cc8b Btrfs: Add support for device scanning and detection ioctls 
Signed-off-by: Chris Mason <chris.mason@oracle.com>
 2008-09-25 11:04:01 -04:00
Chris Mason
239b14b32d Btrfs: Bring back mount -o ssd optimizations 
Signed-off-by: Chris Mason <chris.mason@oracle.com>
 2008-09-25 11:04:01 -04:00
Chris Mason
0d81ba5dbe Btrfs: Move device information into the super block so it can be scanned 
Signed-off-by: Chris Mason <chris.mason@oracle.com>
 2008-09-25 11:04:01 -04:00
Chris Mason
6324fbf334 Btrfs: Dynamic chunk and block group allocation 
Signed-off-by: Chris Mason <chris.mason@oracle.com>
 2008-09-25 11:04:01 -04:00
Chris Mason
0b86a832a1 Btrfs: Add support for multiple devices per filesystem 
Signed-off-by: Chris Mason <chris.mason@oracle.com>
 2008-09-25 11:04:00 -04:00