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395 Commits

Author SHA1 Message Date
Chris Mason
dfe2502068 Btrfs: Add mount -o degraded to allow mounts to continue with missing devices 
Signed-off-by: Chris Mason <chris.mason@oracle.com>
 2008-09-25 11:04:03 -04:00
Chris Mason
a68d5933a0 Btrfs: Update nodatacow mode to support cloned single files and resizing 
Before, nodatacow only checked to make sure multiple roots didn't have
references on a single extent.  This check makes sure that multiple
inodes don't have references.

nodatacow needed an extra check to see if the block group was currently
readonly.  This way cows forced by the chunk relocation code are honored.

Signed-off-by: Chris Mason <chris.mason@oracle.com>
 2008-09-25 11:04:02 -04:00
Chris Mason
bf4ef67924 Btrfs: Properly find the root for snapshotted blocks during chunk relocation 
Signed-off-by: Chris Mason <chris.mason@oracle.com>
 2008-09-25 11:04:02 -04:00
Chris Mason
a061fc8da7 Btrfs: Add support for online device removal 
This required a few structural changes to the code that manages bdev pointers:

The VFS super block now gets an anon-bdev instead of a pointer to the
lowest bdev.  This allows us to avoid swapping the super block bdev pointer
around at run time.

The code to read in the super block no longer goes through the extent
buffer interface.  Things got ugly keeping the mapping constant.

Signed-off-by: Chris Mason <chris.mason@oracle.com>
 2008-09-25 11:04:02 -04:00
Sage Weil
f2eb0a241f Btrfs: Clone file data ioctl 
Add a new ioctl to clone file data

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
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
e015640f9c Btrfs: Write bio checksumming outside the FS mutex 
This significantly improves streaming write performance by allowing
concurrency in the data checksumming.

Signed-off-by: Chris Mason <chris.mason@oracle.com>
 2008-09-25 11:04:01 -04:00
Chris Mason
44b8bd7edd Btrfs: Create a work queue for bio writes 
This allows checksumming to happen in parallel among many cpus, and
keeps us from bogging down pdflush with the checksumming code.

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
98d20f67cf Add a min size parameter to btrfs_alloc_extent 
On huge machines, delayed allocation may try to allocate massive extents.
This change allows btrfs_alloc_extent to return something smaller than
the caller asked for, and the data allocation routines will loop over
the allocations until it fills the whole delayed alloc.

Signed-off-by: Chris Mason <chris.mason@oracle.com>
 2008-09-25 11:04:01 -04:00
Chris Mason
ce9adaa5a7 Btrfs: Do metadata checksums for reads via a workqueue 
Before, metadata checksumming was done by the callers of read_tree_block,
which would set EXTENT_CSUM bits in the extent tree to show that a given
range of pages was already checksummed and didn't need to be verified
again.

But, those bits could go away via try_to_releasepage, and the end
result was bogus checksum failures on pages that never left the cache.

The new code validates checksums when the page is read.  It is a little
tricky because metadata blocks can span pages and a single read may
end up going via multiple bios.

Signed-off-by: Chris Mason <chris.mason@oracle.com>
 2008-09-25 11:04:01 -04:00
Chris Mason
d18a2c4475 Btrfs: Fix allocation profile init 
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
Chris Mason
63b10fc487 Reorder the flags field in struct btrfs_header and record a flag on writeout 
This allows detection of blocks that have already been written in the
running transaction so they can be recowed instead of modified again.
It is step one in trusting the transid field of the block pointers.

Signed-off-by: Chris Mason <chris.mason@oracle.com>
 2008-09-25 11:04:01 -04:00
Chris Mason
0416008814 Create a btrfs backing dev info 
This allows intelligent versions of unplug and congestion functions

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
e085def2c4 Btrfs: Make the FS tree the last objectid in the tree of tree roots 
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
Chris Mason
065631f6dc Btrfs: checksum file data at bio submission time instead of during writepage 
When we checkum file data during writepage, the checksumming is done one
page at a time, making it difficult to do bulk metadata modifications
to insert checksums for large ranges of the file at once.

This patch changes btrfs to checksum on a per-bio basis instead.  The
bios are checksummed before they are handed off to the block layer, so
each bio is contiguous and only has pages from the same inode.

Checksumming on a bio basis allows us to insert and modify the file
checksum items in large groups.  It also allows the checksumming to
be done more easily by async worker threads.

Signed-off-by: Chris Mason <chris.mason@oracle.com>
 2008-09-25 11:04:00 -04:00
David Miller
df68b8a7ad Btrfs: unaligned access fixes 
Btrfs set/get macros lose type information needed to avoid
unaligned accesses on sparc64.
ere is a patch for the kernel bits which fixes most of the
unaligned accesses on sparc64.

btrfs_name_hash is modified to return the hash value instead
of getting a return location via a (potentially unaligned)
pointer.

Signed-off-by: Chris Mason <chris.mason@oracle.com>
 2008-09-25 11:04:00 -04:00
Chris Mason
9069218d44 Btrfs: Fix i_blocks accounting 
Now that delayed allocation accounting works, i_blocks accounting is changed
to only modify i_blocks when extents inserted or removed.

The fillattr call is changed to include the delayed allocation byte count
in the i_blocks result.

Signed-off-by: Chris Mason <chris.mason@oracle.com>
 2008-09-25 11:04:00 -04:00
Chris Mason
47b0c4f8c7 Btrfs: Update magic 
Signed-off-by: Chris Mason <chris.mason@oracle.com>
 2008-09-25 11:04:00 -04:00
Chris Mason
4529ba495c Btrfs: Add data block hints to SSD mode too 
Signed-off-by: Chris Mason <chris.mason@oracle.com>
 2008-09-25 11:04:00 -04:00
Chris Mason
6f568d35a0 Btrfs: mount -o max_inline=size to control the maximum inline extent size 
Signed-off-by: Chris Mason <chris.mason@oracle.com>
 2008-09-25 11:04:00 -04:00
Chris Mason
9c58309d6c Btrfs: Add inode item and backref in one insert, reducing cpu usage 
Signed-off-by: Chris Mason <chris.mason@oracle.com>
 2008-09-25 11:04:00 -04:00
Chris Mason
85e21bac16 Btrfs: During deletes and truncate, remove many items at once from the tree 
Signed-off-by: Chris Mason <chris.mason@oracle.com>
 2008-09-25 11:04:00 -04:00
Chris Mason
d1310b2e0c Btrfs: Split the extent_map code into two parts 
There is now extent_map for mapping offsets in the file to disk and
extent_io for state tracking, IO submission and extent_bufers.

The new extent_map code shifts from [start,end] pairs to [start,len], and
pushes the locking out into the caller.  This allows a few performance
optimizations and is easier to use.

A number of extent_map usage bugs were fixed, mostly with failing
to remove extent_map entries when changing the file.

Signed-off-by: Chris Mason <chris.mason@oracle.com>
 2008-09-25 11:03:59 -04:00
Chris Mason
5f56406aab Btrfs: Fix hole insertion corner cases 
There were a few places that could cause duplicate extent insertion,
this adjusts the code that creates holes to avoid it.

lookup_extent_map is changed to correctly return all of the extents in a
range, even when there are none matching at the start of the range.

Signed-off-by: Chris Mason <chris.mason@oracle.com>
 2008-09-25 11:03:59 -04:00
Chris Mason
e18e4809b1 Btrfs: Add mount -o ssd, which includes optimizations for seek free storage 
Signed-off-by: Chris Mason <chris.mason@oracle.com>
 2008-09-25 11:03:59 -04:00
Chris Mason
2da98f003f Btrfs: Run igrab on data=ordered inodes to prevent deadlocks during writeout 
Signed-off-by: Chris Mason <chris.mason@oracle.com>
 2008-09-25 11:03:59 -04:00
Chris Mason
cee36a03e8 Rework btrfs_drop_inode to avoid scheduling 
Signed-off-by: Chris Mason <chris.mason@oracle.com>
 2008-09-25 11:03:59 -04:00
Chris Mason
61295eb866 Btrfs: Add drop inode func to avoid data=ordered deadlock 
Signed-off-by: Chris Mason <chris.mason@oracle.com>
 2008-09-25 11:03:59 -04:00
Chris Mason
69a32ac517 Btrfs: Change magic string to reflect new format 
Signed-off-by: Chris Mason <chris.mason@oracle.com>
 2008-09-25 11:03:59 -04:00
Yan
fdebe2bd70 Btrfs: Add readonly inode flag 
This patch adds readonly inode flag support.  A file with this flag
can't be modified, but can be deleted.

Signed-off-by: Chris Mason <chris.mason@oracle.com>
 2008-09-25 11:03:59 -04:00
Chris Mason
21ad10cf3e Btrfs: Add flush barriers on commit 
Signed-off-by: Chris Mason <chris.mason@oracle.com>
 2008-09-25 11:03:59 -04:00
Yan
b98b6767a0 Btrfs: Add inode flags support 
This patch adds NODATASUM & NODATACOW inode flags support.

Signed-off-by: Chris Mason <chris.mason@oracle.com>
 2008-09-25 11:03:59 -04:00
Chris Mason
e2008b6140 Btrfs: Add some simple throttling to wait for data=ordered and snapshot deletion 
Signed-off-by: Chris Mason <chris.mason@oracle.com>
 2008-09-25 11:03:59 -04:00
Chris Mason
dc17ff8f11 Btrfs: Add data=ordered support 
This forces file data extents down the disk along with the metadata that
references them.  The current implementation is fairly simple, and just
writes out all of the dirty pages in an inode before the commit.

Signed-off-by: Chris Mason <chris.mason@oracle.com>
 2008-09-25 11:03:59 -04:00
Chris Mason
4313b3994d Btrfs: Reduce stack usage in the resizer, fix 32 bit compiles 
Signed-off-by: Chris Mason <chris.mason@oracle.com>
 2008-09-25 11:03:58 -04:00
Chris Mason
8f662a76c6 Btrfs: Add readahead to the online shrinker, and a mount -o alloc_start= for testing 
Signed-off-by: Chris Mason <chris.mason@oracle.com>
 2008-09-25 11:03:58 -04:00
Chris Mason
edbd8d4efe Btrfs: Support for online FS resize (grow and shrink) 
Signed-off-by: Chris Mason <chris.mason@oracle.com>
 2008-09-25 11:03:58 -04:00
Chris Mason
1832a6d5ee Btrfs: Implement basic support for -ENOSPC 
This is intended to prevent accidentally filling the drive.  A determined
user can still make things oops.

It includes some accounting of the current bytes under delayed allocation,
but this will change as things get optimized

Signed-off-by: Chris Mason <chris.mason@oracle.com>
 2008-09-25 11:03:58 -04:00
Chris Mason
6da6abae02 Btrfs: Back port to 2.6.18-el kernels 
Signed-off-by: Chris Mason <chris.mason@oracle.com>
 2008-09-25 11:03:58 -04:00
Chris Mason
c59f8951d4 Btrfs: Add mount option to enforce a max extent size 
Signed-off-by: Chris Mason <chris.mason@oracle.com>
 2008-09-25 11:03:58 -04:00
Chris Mason
be20aa9dba Btrfs: Add mount option to turn off data cow 
A number of workloads do not require copy on write data or checksumming.
mount -o nodatasum to disable checksums and -o nodatacow to disable
both copy on write and checksumming.

In nodatacow mode, copy on write is still performed when a given extent
is under snapshot.

Signed-off-by: Chris Mason <chris.mason@oracle.com>
 2008-09-25 11:03:58 -04:00
Chris Mason
b6cda9bcb4 Btrfs: Add mount -o nodatasum to turn of file data checksumming 
Signed-off-by: Chris Mason <chris.mason@oracle.com>
 2008-09-25 11:03:58 -04:00
Chris Mason
f6dbff55d7 Btrfs: Reorder extent back refs to differentiate btree blocks from file data 
Signed-off-by: Chris Mason <chris.mason@oracle.com>
 2008-09-25 11:03:58 -04:00
Chris Mason
3954401fa6 Btrfs: Add back pointers from the inode to the directory that references it 
Signed-off-by: Chris Mason <chris.mason@oracle.com>
 2008-09-25 11:03:58 -04:00
Chris Mason
7bb86316c3 Btrfs: Add back pointers from extents to the btree or file referencing them 
Signed-off-by: Chris Mason <chris.mason@oracle.com>
 2008-09-25 11:03:58 -04:00
Chris Mason
74493f7a59 Btrfs: Implement generation numbers in block pointers 
Signed-off-by: Chris Mason <chris.mason@oracle.com>
 2008-09-25 11:03:58 -04:00
Chris Mason
87ee04eb0f Btrfs: Add simple stripe size parameter 
Signed-off-by: Chris Mason <chris.mason@oracle.com>
 2008-09-25 11:03:58 -04:00
Chris Mason
00f5c795fc btrfs_drop_extents: make sure the item is getting smaller before truncate 
Signed-off-by: Chris Mason <chris.mason@oracle.com>
 2008-09-25 11:03:58 -04:00
Yan
324ae4df00 Btrfs: Add block group pinned accounting back 
This patch adds a helper function 'update_pinned_extents' to
extent-tree.c. The usage of the helper function is similar to
'update_block_group',  the last parameter of the function indicates
pin vs unpin.

Signed-off-by: Chris Mason <chris.mason@oracle.com>
 2008-09-25 11:03:57 -04:00
Josef Bacik
5103e947b9 xattr support for btrfs 
Signed-off-by: Chris Mason <chris.mason@oracle.com>
 2008-09-25 11:03:57 -04:00
Chris Mason
e644d021e3 Fix recursive KM_USER1 usage in btrfs_realloc_node 
Signed-off-by: Chris Mason <chris.mason@oracle.com>
 2008-09-25 11:03:57 -04:00
Chris Mason
f84a8b362d Btrfs: Optimize allocations as we need to mix data and metadata into one group 
Signed-off-by: Chris Mason <chris.mason@oracle.com>
 2008-09-25 11:03:57 -04:00
Chris Mason
179e29e488 Btrfs: Fix a number of inline extent problems that Yan Zheng reported. 
The fixes do a number of things:

1) Most btrfs_drop_extent callers will try to leave the inline extents in
place.  It can truncate bytes off the beginning of the inline extent if
required.

2) writepage can now update the inline extent, allowing mmap writes to
go directly into the inline extent.

3) btrfs_truncate_in_transaction truncates inline extents

4) extent_map.c fixed to not merge inline extent mappings and hole
mappings together

Signed-off-by: Chris Mason <chris.mason@oracle.com>
 2008-09-25 11:03:57 -04:00
Chris Mason
f578d4bd7e Btrfs: Optimize csum insertion to create larger items when possible 
This reduces the number of calls to btrfs_extend_item and greatly lowers
the cpu usage while writing large files.

Signed-off-by: Chris Mason <chris.mason@oracle.com>
 2008-09-25 11:03:57 -04:00
Chris Mason
6d7231f7d3 Btrfs: Fix typo: owner is a 64 bit field 
Signed-off-by: Chris Mason <chris.mason@oracle.com>
 2008-09-25 11:03:57 -04:00
Chris Mason
a6b6e75e09 Btrfs: Defrag only leaves, and only when the parent node has a single objectid 
This allows us to defrag huge directories, but skip the expensive defrag
case in more common usage, where it does not help as much.

Signed-off-by: Chris Mason <chris.mason@oracle.com>
 2008-09-25 11:03:57 -04:00
Chris Mason
19c00ddcc3 Btrfs: Add back metadata checksumming 
Signed-off-by: Chris Mason <chris.mason@oracle.com>
 2008-09-25 11:03:56 -04:00
Chris Mason
0f82731fc5 Breakout BTRFS_SETGET_FUNCS into a separate C file, the inlines were too big. 
Signed-off-by: Chris Mason <chris.mason@oracle.com>
 2008-09-25 11:03:56 -04:00
Chris Mason
810191ff30 Btrfs: extent_map optimizations to cut down on CPU usage 
Signed-off-by: Chris Mason <chris.mason@oracle.com>
 2008-09-25 11:03:56 -04:00
Chris Mason
3326d1b07c Btrfs: Allow tails larger than one page 
Signed-off-by: Chris Mason <chris.mason@oracle.com>
 2008-09-25 11:03:56 -04:00
Chris Mason
14048ed0c4 Btrfs: Cache extent buffer mappings 
Signed-off-by: Chris Mason <chris.mason@oracle.com>
 2008-09-25 11:03:56 -04:00
Chris Mason
db94535db7 Btrfs: Allow tree blocks larger than the page size 
Signed-off-by: Chris Mason <chris.mason@oracle.com>
 2008-09-25 11:03:56 -04:00
Chris Mason
1a5bc167f6 Btrfs: Change the remaining radix trees used by extent-tree.c to extent_map trees 
Signed-off-by: Chris Mason <chris.mason@oracle.com>
 2008-09-25 11:03:56 -04:00
Chris Mason
96b5179d0d Btrfs: Stop using radix trees for the block group cache 
Signed-off-by: Chris Mason <chris.mason@oracle.com>
 2008-09-25 11:03:56 -04:00
Chris Mason
f510cfecfc Btrfs: Fix extent_buffer and extent_state leaks 
Signed-off-by: Chris Mason <chris.mason@oracle.com>
 2008-09-25 11:03:56 -04:00
Chris Mason
6d36dcd48f Btrfs: Avoid memcpy where possible in extent_buffers 
Signed-off-by: Chris Mason <chris.mason@oracle.com>
 2008-09-25 11:03:56 -04:00
Chris Mason
479965d66e Btrfs: Optimizations for the extent_buffer code 
Signed-off-by: Chris Mason <chris.mason@oracle.com>
 2008-09-25 11:03:56 -04:00
Chris Mason
5f39d397df Btrfs: Create extent_buffer interface for large blocksizes 
Signed-off-by: Chris Mason <chris.mason@oracle.com>
 2008-09-25 11:03:56 -04:00
Christoph Hellwig
34287aa360 Btrfs: use unlocked_ioctl 
No reason to grab the BKL before calling into the btrfs ioctl code.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Chris Mason <chris.mason@oracle.com>
 2007-09-14 10:22:47 -04:00
Chris Mason
5ce14bbcdd Btrfs: Find and remove dead roots the first time a root is loaded. 
Dead roots are trees left over after a crash, and they were either in the
process of being removed or were waiting to be removed when the box crashed.
Before, a search of the entire tree of root pointers was done on mount
looking for dead roots.  Now, the search is done the first time we load
a root.

This makes mount faster when there are a large number of snapshots, and it
enables the block accounting code to properly update the block counts on
the latest root as old versions of the root are reaped after a crash.

Signed-off-by: Chris Mason <chris.mason@oracle.com>
 2007-09-11 11:15:39 -04:00
Chris Mason
011410bd85 Btrfs: Add more synchronization before creating a snapshot 
File data checksums are only done during writepage, so we have to make sure
all pages are written when the snapshot is taken.  This also adds some
locking so that new writes don't race in and add new dirty pages.

Signed-off-by: Chris Mason <chris.mason@oracle.com>
 2007-09-10 19:58:36 -04:00
Chris Mason
95e0528919 Btrfs: Use mount -o subvol to select the subvol directory instead of dev: 
Signed-off-by: Chris Mason <chris.mason@oracle.com>
 2007-08-29 09:11:44 -04:00
Josef Bacik
58176a9604 Btrfs: Add per-root block accounting and sysfs entries 
Signed-off-by: Chris Mason <chris.mason@oracle.com>
 2007-08-29 15:47:34 -04:00
Chris Mason
a52d9a8033 Btrfs: Extent based page cache code. This uses an rbtree of extents and tests 
instead of buffer heads.

Signed-off-by: Chris Mason <chris.mason@oracle.com>
 2007-08-27 16:49:44 -04:00
Josef Bacik
15ee9bc7ed Btrfs: delay commits during fsync to allow more writers 
Signed-off-by: Chris Mason <chris.mason@oracle.com>
 2007-08-10 16:22:09 -04:00
Chris Mason
e9d0b13b5b Btrfs: Btree defrag on the extent-mapping tree as well 
Signed-off-by: Chris Mason <chris.mason@oracle.com>
 2007-08-10 14:06:19 -04:00
Chris Mason
26b8003f10 Btrfs: Replace extent tree preallocation code with some bit radix magic. 
Signed-off-by: Chris Mason <chris.mason@oracle.com>
 2007-08-08 20:17:12 -04:00
Chris Mason
f4468e94c8 Btrfs: Let some locks go during defrag and snapshot dropping 
Signed-off-by: Chris Mason <chris.mason@oracle.com>
 2007-08-08 10:08:58 -04:00
Chris Mason
6702ed490c Btrfs: Add run time btree defrag, and an ioctl to force btree defrag 
This adds two types of btree defrag, a run time form that tries to
defrag recently allocated blocks in the btree when they are still in ram,
and an ioctl that forces defrag of all btree blocks.

File data blocks are not defragged yet, but this can make a huge difference
in sequential btree reads.

Signed-off-by: Chris Mason <chris.mason@oracle.com>
 2007-08-07 16:15:09 -04:00
Chris Mason
3c69faecb8 Btrfs: Fold some btree readahead routines into something more generic. 
Signed-off-by: Chris Mason <chris.mason@oracle.com>
 2007-08-07 15:52:22 -04:00
Chris Mason
9f3a742736 Btrfs: Do snapshot deletion in smaller chunks. 
Before, snapshot deletion was a single atomic unit.  This caused considerable
lock contention and required an unbounded amount of space.  Now,
the drop_progress field in the root item is used to indicate how far along
snapshot deletion is, and to resume where it left off.

Signed-off-by: Chris Mason <chris.mason@oracle.com>
 2007-08-07 15:52:19 -04:00
Chris Mason
ccd467d60e Btrfs: crash recovery fixes 
Signed-off-by: Chris Mason <chris.mason@oracle.com>
 2007-06-28 15:57:36 -04:00
Chris Mason
4b52dff6d3 Btrfs: Fix super block updates during transaction commit 
The super block written during commit was not consistent with the state of
the trees.  This change adds an in-memory copy of the super so that we can
make sure to write out consistent data during a commit.

Signed-off-by: Chris Mason <chris.mason@oracle.com>
 2007-06-26 10:06:50 -04:00
Chris Mason
5eda7b5e9b Btrfs: Add the ability to find and remove dead roots after a crash. 
Signed-off-by: Chris Mason <chris.mason@oracle.com>
 2007-06-22 14:16:25 -04:00
Chris Mason
54aa1f4dfd Btrfs: Audit callers and return codes to make sure -ENOSPC gets up the stack 
Signed-off-by: Chris Mason <chris.mason@oracle.com>
 2007-06-22 14:16:25 -04:00
Chris Mason
11bd143fc8 Btrfs: Switch to libcrc32c to avoid problems with cryptomgr on highmem machines 
Signed-off-by: Chris Mason <chris.mason@oracle.com>
 2007-06-22 14:16:24 -04:00
Chris Mason
9ebefb180b Btrfs: patch queue: page_mkwrite 
Signed-off-by: Chris Mason <chris.mason@oracle.com>
 2007-06-15 13:50:00 -04:00
Chris Mason
6cbd557078 Btrfs: add GPLv2 
Signed-off-by: Chris Mason <chris.mason@oracle.com>
 2007-06-12 09:07:21 -04:00
Chris Mason
39279cc3d2 Btrfs: split up super.c 
Signed-off-by: Chris Mason <chris.mason@oracle.com>
 2007-06-12 06:35:45 -04:00
Chris Mason
5276aedab0 Btrfs: fix oops after block group lookup 
Signed-off-by: Chris Mason <chris.mason@oracle.com>
 2007-06-11 21:33:38 -04:00
Chris Mason
0cf6c62017 Btrfs: remove device tree 
Signed-off-by: Chris Mason <chris.mason@oracle.com>
 2007-06-09 09:22:25 -04:00
Chris Mason
facda1e787 Btrfs: get forced transaction commits via workqueue 
Signed-off-by: Chris Mason <chris.mason@oracle.com>
 2007-06-08 18:11:48 -04:00
Chris Mason
08607c1b18 Btrfs: add compat ioctl 
Signed-off-by: Chris Mason <chris.mason@oracle.com>
 2007-06-08 15:33:54 -04:00
Chris Mason
fabb568183 Btrfs: d_type optimization 
Signed-off-by: Chris Mason <chris.mason@oracle.com>
 2007-06-07 22:13:21 -04:00
Chris Mason
1e2677e000 Btrfs: block group switching 
Signed-off-by: Chris Mason <chris.mason@oracle.com>
 2007-05-29 16:52:18 -04:00
Chris Mason
1de037a43e Btrfs: fixup various fsx failures 
Signed-off-by: Chris Mason <chris.mason@oracle.com>
 2007-05-29 15:17:08 -04:00
Chris Mason
3a68637562 Btrfs: sparse files! 
Signed-off-by: Chris Mason <chris.mason@oracle.com>
 2007-05-24 13:35:57 -04:00
Chris Mason
e06afa839e Btrfs: rename 
Signed-off-by: Chris Mason <chris.mason@oracle.com>
 2007-05-23 15:44:28 -04:00
Chris Mason
f9f3c6b666 Btrfs: 2.6.21-git fixes 
Signed-off-by: Chris Mason <chris.mason@oracle.com>
 2007-05-21 14:05:12 -04:00
Chris Mason
de428b63b1 Btrfs: allocator optimizations, truncate readahead 
Signed-off-by: Chris Mason <chris.mason@oracle.com>
 2007-05-18 13:28:27 -04:00
Chris Mason
509659cde5 Btrfs: switch to crc32c instead of sha256 
Signed-off-by: Chris Mason <chris.mason@oracle.com>
 2007-05-10 12:36:17 -04:00
Chris Mason
e37c9e6921 Btrfs: many allocator fixes, pretty solid 
Signed-off-by: Chris Mason <chris.mason@oracle.com>
 2007-05-09 20:13:14 -04:00
Chris Mason
3e1ad54fe2 Btrfs: allocator and tuning 
Signed-off-by: Chris Mason <chris.mason@oracle.com>
 2007-05-07 20:03:49 -04:00
Chris Mason
be74417553 Btrfs: more allocator enhancements 
Signed-off-by: Chris Mason <chris.mason@oracle.com>
 2007-05-06 10:15:01 -04:00
Chris Mason
be08c1b9f8 Btrfs: early metadata/data split 
Signed-off-by: Chris Mason <chris.mason@oracle.com>
 2007-05-03 09:06:49 -04:00
Chris Mason
35b7e47610 Btrfs: fix page cache memory leak 
Signed-off-by: Chris Mason <chris.mason@oracle.com>
 2007-05-02 15:53:43 -04:00
Chris Mason
31f3c99b73 Btrfs: allocator improvements, inode block groups 
Signed-off-by: Chris Mason <chris.mason@oracle.com>
 2007-04-30 15:25:45 -04:00
Chris Mason
cd1bc4653d Btrfs: more block allocator work 
Signed-off-by: Chris Mason <chris.mason@oracle.com>
 2007-04-27 10:08:34 -04:00
Chris Mason
9078a3e1e4 Btrfs: start of block group code 
Signed-off-by: Chris Mason <chris.mason@oracle.com>
 2007-04-26 16:46:15 -04:00
Chris Mason
f2458e1d8c Btrfs: change around extent-tree prealloc 
Signed-off-by: Chris Mason <chris.mason@oracle.com>
 2007-04-25 15:52:25 -04:00
Chris Mason
c62a1920ce Btrfs: get rid of the extent_item type field 
Signed-off-by: Chris Mason <chris.mason@oracle.com>
 2007-04-24 12:07:39 -04:00
Chris Mason
4d77567309 Btrfs: add owner and type fields to the extents aand block headers 
Signed-off-by: Chris Mason <chris.mason@oracle.com>
 2007-04-20 20:23:12 -04:00
Chris Mason
e66f709b15 Btrfs: write barriers on commit, balance level before split 
Signed-off-by: Chris Mason <chris.mason@oracle.com>
 2007-04-20 13:16:02 -04:00
Chris Mason
8fd17795b2 Btrfs: early fsync support 
Signed-off-by: Chris Mason <chris.mason@oracle.com>
 2007-04-19 21:01:03 -04:00
Chris Mason
7e38180e20 Btrfs: directory inode index is back 
Signed-off-by: Chris Mason <chris.mason@oracle.com>
 2007-04-19 15:36:27 -04:00
Chris Mason
236454dfff Btrfs: many file_write fixes, inline data 
Signed-off-by: Chris Mason <chris.mason@oracle.com>
 2007-04-19 13:37:44 -04:00
Chris Mason
a429e51371 Btrfs: working file_write, reorganized key flags 
Signed-off-by: Chris Mason <chris.mason@oracle.com>
 2007-04-18 16:15:28 -04:00
Chris Mason
70b2befd0c Btrfs: rework csums and extent item ordering 
Signed-off-by: Chris Mason <chris.mason@oracle.com>
 2007-04-17 15:39:32 -04:00
Chris Mason
b18c668581 Btrfs: progress on file_write 
Signed-off-by: Chris Mason <chris.mason@oracle.com>
 2007-04-17 13:26:50 -04:00
Chris Mason
6567e837df Btrfs: early work to file_write in big extents 
Signed-off-by: Chris Mason <chris.mason@oracle.com>
 2007-04-16 09:22:45 -04:00
Chris Mason
b4100d6424 Btrfs: add a device id to device items 
Signed-off-by: Chris Mason <chris.mason@oracle.com>
 2007-04-12 12:14:00 -04:00
Chris Mason
7eccb903a8 Btrfs: create a logical->phsyical block number mapping scheme 
Signed-off-by: Chris Mason <chris.mason@oracle.com>
 2007-04-11 15:53:25 -04:00
Chris Mason
0bd93ba022 Btrfs: early support for multiple devices 
Signed-off-by: Chris Mason <chris.mason@oracle.com>
 2007-04-11 13:57:44 -04:00
Chris Mason
cac87faa09 Btrfs: use a dedicated inode num for root root dir 
Signed-off-by: Chris Mason <chris.mason@oracle.com>
 2007-04-11 08:59:20 -04:00
Chris Mason
d0dbc6245c Btrfs: drop owner and parentid 
Signed-off-by: Chris Mason <chris.mason@oracle.com>
 2007-04-10 12:36:36 -04:00
Chris Mason
1b05da2ee6 Btrfs: drop the inode map tree 
Signed-off-by: Chris Mason <chris.mason@oracle.com>
 2007-04-10 12:13:09 -04:00
Chris Mason
c5739bba52 Btrfs: snapshot progress 
Signed-off-by: Chris Mason <chris.mason@oracle.com>
 2007-04-10 09:27:04 -04:00
Chris Mason
0f7d52f443 Btrfs: groundwork for subvolume and snapshot roots 
Signed-off-by: Chris Mason <chris.mason@oracle.com>
 2007-04-09 10:42:37 -04:00
Chris Mason
d6e4a428eb Btrfs: start of support for many FS volumes 
Signed-off-by: Chris Mason <chris.mason@oracle.com>
 2007-04-06 15:37:36 -04:00
Chris Mason
5be6f7f174 Btrfs: dirindex optimizations 
Signed-off-by: Chris Mason <chris.mason@oracle.com>
 2007-04-05 13:35:25 -04:00
Chris Mason
7fcde0e329 Btrfs: finish off inode indexing in dirs, add overflows 
Signed-off-by: Chris Mason <chris.mason@oracle.com>
 2007-04-05 12:13:21 -04:00
Chris Mason
5f26f772e5 Btrfs: more inode indexed directory work 
Signed-off-by: Chris Mason <chris.mason@oracle.com>
 2007-04-05 10:38:44 -04:00
Chris Mason
bae45de03c Btrfs: add dir inode index 
Signed-off-by: Chris Mason <chris.mason@oracle.com>
 2007-04-04 21:22:22 -04:00
Chris Mason
b1a4d96509 Btrfs: tweak the inode-map and free extent search starts on cold mount 
Signed-off-by: Chris Mason <chris.mason@oracle.com>
 2007-04-04 15:27:52 -04:00
Chris Mason
2c90e5d658 Btrfs: still corruption hunting 
Signed-off-by: Chris Mason <chris.mason@oracle.com>
 2007-04-02 10:50:19 -04:00
Chris Mason
d602557953 Btrfs: corruption hunt continues 
Signed-off-by: Chris Mason <chris.mason@oracle.com>
 2007-03-30 14:27:56 -04:00
Chris Mason
f254e52c1c Btrfs: verify csums on read 
Signed-off-by: Chris Mason <chris.mason@oracle.com>
 2007-03-29 15:15:27 -04:00
Chris Mason
87cbda5c1f Btrfs: sha256 csums on metadata 
Signed-off-by: Chris Mason <chris.mason@oracle.com>
 2007-03-28 19:44:27 -04:00
Chris Mason
d98237b3ed Btrfs: use a btree inode instead of sb_getblk 
Signed-off-by: Chris Mason <chris.mason@oracle.com>
 2007-03-28 13:57:48 -04:00
Chris Mason
9773a78868 Btrfs: byte offsets for file keys 
Signed-off-by: Chris Mason <chris.mason@oracle.com>
 2007-03-27 11:26:26 -04:00
Chris Mason
71951f35a6 Btrfs: add generation field to file extent 
Signed-off-by: Chris Mason <chris.mason@oracle.com>
 2007-03-27 09:16:29 -04:00
Chris Mason
9a6f11ed8f Btrfs: split out level field in struct header 
Signed-off-by: Chris Mason <chris.mason@oracle.com>
 2007-03-27 09:06:38 -04:00
Chris Mason
6407bf6d7c Btrfs: reference counts on data extents 
Signed-off-by: Chris Mason <chris.mason@oracle.com>
 2007-03-27 06:33:00 -04:00
Chris Mason
dee26a9f7a btrfs_get_block, file read/write 
Signed-off-by: Chris Mason <chris.mason@oracle.com>
 2007-03-26 16:00:06 -04:00
Chris Mason
8ef97622ca Btrfs: add a radix back bit tree 
Signed-off-by: Chris Mason <chris.mason@oracle.com>
 2007-03-26 10:15:30 -04:00
Chris Mason
d561c025ee Btrfs: very minimal locking 
Signed-off-by: Chris Mason <chris.mason@oracle.com>
 2007-03-23 19:47:49 -04:00
Chris Mason
7f5c15160e Add generation number to btrfs_header, readdir fixes, hash collision fixes 
Signed-off-by: Chris Mason <chris.mason@oracle.com>
 2007-03-23 15:56:19 -04:00
Chris Mason
d571976292 btrfs_create, btrfs_write_super, btrfs_sync_fs 
Signed-off-by: Chris Mason <chris.mason@oracle.com>
 2007-03-23 10:01:08 -04:00
Chris Mason
79154b1b5b Btrfs: transaction rework 
Signed-off-by: Chris Mason <chris.mason@oracle.com>
 2007-03-22 15:59:16 -04:00
Chris Mason
e20d96d64f Mountable btrfs, with readdir 
Signed-off-by: Chris Mason <chris.mason@oracle.com>
 2007-03-22 12:13:20 -04:00
Chris Mason
2e635a2783 Btrfs: initial move to kernel module land 
Signed-off-by: Chris Mason <chris.mason@oracle.com>
 2007-03-21 11:12:56 -04:00
Chris Mason
1261ec42b3 Btrfs: Better block record keeping, real mkfs 
Signed-off-by: Chris Mason <chris.mason@oracle.com>
 2007-03-20 20:35:03 -04:00
Chris Mason
293ffd5fd3 Btrfs: change dir-test to insert inode_items 
Signed-off-by: Chris Mason <chris.mason@oracle.com>
 2007-03-20 15:57:25 -04:00
Chris Mason
9f5fae2fe6 Btrfs: Add inode map, and the start of file extent items 
Signed-off-by: Chris Mason <chris.mason@oracle.com>
 2007-03-20 14:38:32 -04:00
Chris Mason
e089f05c18 Btrfs: transaction handles everywhere 
Signed-off-by: Chris Mason <chris.mason@oracle.com>
 2007-03-16 16:20:31 -04:00
Chris Mason
88fd146c27 Btrfs: pin freed blocks from the FS tree too 
Signed-off-by: Chris Mason <chris.mason@oracle.com>
 2007-03-16 08:56:18 -04:00
Chris Mason
a8a2ee0c60 Btrfs: add a name_len to dir items, reorder key 
Signed-off-by: Chris Mason <chris.mason@oracle.com>
 2007-03-16 08:46:49 -04:00
Chris Mason
1e1d27017c Btrfs: add inode item 
Signed-off-by: Chris Mason <chris.mason@oracle.com>
 2007-03-15 19:03:33 -04:00
Chris Mason
1d4f6404de Btrfs: directory testing code and dir item fixes 
Signed-off-by: Chris Mason <chris.mason@oracle.com>
 2007-03-15 15:18:43 -04:00
Chris Mason
62e2749e03 Btrfs: Use a chunk of the key flags to record the item type. 
Add (untested and simple) directory item code
Fix comp_keys to use the new key ordering
Add btrfs_insert_empty_item

Signed-off-by: Chris Mason <chris.mason@oracle.com>
 2007-03-15 12:56:47 -04:00
Chris Mason
a1516c8921 Btrfs: reorder key offset and flags 
Signed-off-by: Chris Mason <chris.mason@oracle.com>
 2007-03-14 14:26:53 -04:00
Chris Mason
123abc88c9 Btrfs: variable block size support 
Signed-off-by: Chris Mason <chris.mason@oracle.com>
 2007-03-14 14:14:43 -04:00
Chris Mason
4beb1b8b75 Btrfs: add leaf data casting helper 
Signed-off-by: Chris Mason <chris.mason@oracle.com>
 2007-03-14 10:31:29 -04:00
Chris Mason
3768f3689f Btrfs: Change the super to point to a tree of trees to enable persistent snapshots 
Signed-off-by: Chris Mason <chris.mason@oracle.com>
 2007-03-13 16:47:54 -04:00
Chris Mason
234b63a091 rename funcs and structs to btrfs 
Signed-off-by: Chris Mason <chris.mason@oracle.com>
 2007-03-13 10:46:10 -04:00
Chris Mason
cf27e1eec0 Btrfs: struct extent_item endian 
Signed-off-by: Chris Mason <chris.mason@oracle.com>
 2007-03-13 09:49:06 -04:00
Chris Mason
1d4f8a0c1e Btrfs: node->blockptrs endian fixes 
Signed-off-by: Chris Mason <chris.mason@oracle.com>
 2007-03-13 09:28:32 -04:00
Chris Mason
0783fcfc4d Btrfs: struct item endian fixes 
Signed-off-by: Chris Mason <chris.mason@oracle.com>
 2007-03-12 20:12:07 -04:00
Chris Mason
e2fa7227cd Btrfs: struct key endian fixes 
Signed-off-by: Chris Mason <chris.mason@oracle.com>
 2007-03-12 16:22:34 -04:00
Chris Mason
bb492bb0a5 Btrfs: Add sparse endian annotations to struct header 
rename struct header to btrfs_header

Signed-off-by: Chris Mason <chris.mason@oracle.com>
 2007-03-12 12:29:44 -04:00
Chris Mason
7518a238ea Btrfs: get/set for struct header fields 
Signed-off-by: Chris Mason <chris.mason@oracle.com>
 2007-03-12 12:01:18 -04:00
Chris Mason
0579da4280 Btrfs: Fixup last found extent caching 
Signed-off-by: Chris Mason <chris.mason@oracle.com>
 2007-03-07 16:15:30 -05:00
Chris Mason
a28ec19775 Btrfs: Fixup reference counting on cows 
Signed-off-by: Chris Mason <chris.mason@oracle.com>
 2007-03-06 20:08:01 -05:00
Chris Mason
02217ed299 Btrfs: early reference counting 
Signed-off-by: Chris Mason <chris.mason@oracle.com>
 2007-03-02 16:08:05 -05:00
Chris Mason
ed2ff2cba7 Btrfs: pretend page cache & commit code 
Signed-off-by: Chris Mason <chris.mason@oracle.com>
 2007-03-01 18:59:40 -05:00
Chris Mason
fec577fb7f Btrfs: Add fsx-style randomized tree tester 
Add debug-tree command to print the tree
Add extent-tree.c to the repo
Comment ctree.h

Signed-off-by: Chris Mason <chris.mason@oracle.com>
 2007-02-26 10:40:21 -05:00
Chris Mason
5de08d7d50 Btrfs: Break up ctree.c a little 
Extent fixes

Signed-off-by: Chris Mason <chris.mason@oracle.com>
 2007-02-24 06:24:44 -05:00
Chris Mason
9a8dd1502d Btrfs: Block sized tree extents and extent deletion 
Signed-off-by: Chris Mason <chris.mason@oracle.com>
 2007-02-23 08:38:36 -05:00
Chris Mason
cfaa72952f Btrfs: extent fixes 
Signed-off-by: Chris Mason <chris.mason@oracle.com>
 2007-02-21 17:04:57 -05:00
Chris Mason
d97e63b69e Btrfs: early extent mapping support 
Signed-off-by: Chris Mason <chris.mason@oracle.com>
 2007-02-20 16:40:44 -05:00
Chris Mason
eb60ceac0e Btrfs: Add backing store, memory management 
Signed-off-by: Chris Mason <chris.mason@oracle.com>
 2007-02-02 09:18:22 -05:00