Chris Mason 83a50de97f Btrfs: prevent RAID level downgrades when space is low ... The extent allocator has code that allows us to fill allocations from any available block group, even if it doesn't match the raid level we've requested. This was put in because adding a new drive to a filesystem made with the default mkfs options actually upgrades the metadata from single spindle dup to full RAID1. But, the code also allows us to allocate from a raid0 chunk when we really want a raid1 or raid10 chunk. This can cause big trouble because mkfs creates a small (4MB) raid0 chunk for data and metadata which then goes unused for raid1/raid10 installs. The allocator will happily wander in and allocate from that chunk when things get tight, which is not correct. The fix here is to make sure that we provide duplication when the caller has asked for it. It does all the dups to be any raid level, which preserves the dup->raid1 upgrade abilities. Signed-off-by: Chris Mason <chris.mason@oracle.com>		2010-12-13 20:07:01 -05:00
..
acl.c	Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mason/btrfs-unstable	2010-06-11 14:18:47 -07:00
async-thread.c	Btrfs: don't walk around with task->state != TASK_RUNNING	2010-05-25 10:34:58 -04:00
async-thread.h	Btrfs: fix deadlock on async thread startup	2009-10-05 09:44:45 -04:00
btrfs_inode.h	Btrfs: Metadata reservation for orphan inodes	2010-05-25 10:34:52 -04:00
compat.h	Btrfs: drop remaining LINUX_KERNEL_VERSION checks and compat code	2009-01-06 09:38:55 -05:00
compression.c	btrfs: cleanup duplicate bio allocating functions	2010-11-21 22:26:03 -05:00
compression.h	Btrfs: Add zlib compression support	2008-10-29 14:49:59 -04:00
ctree.c	Btrfs: cleanup warnings from gcc 4.6 (nonbugs)	2010-10-29 15:14:37 -04:00
ctree.h	btrfs: make 1-bit signed fileds unsigned	2010-11-21 22:26:07 -05:00
delayed-ref.c	Btrfs: Integrate metadata reservation with start_transaction	2010-05-25 10:34:50 -04:00
delayed-ref.h	Btrfs: Integrate metadata reservation with start_transaction	2010-05-25 10:34:50 -04:00
dir-item.c	Btrfs: Fix variables set but not read (bugs found by gcc 4.6)	2010-10-29 15:14:31 -04:00
disk-io.c	Btrfs: EIO when we fail to read tree roots	2010-12-13 14:47:58 -05:00
disk-io.h	Btrfs: use async helpers for DIO write checksumming	2010-05-25 10:34:58 -04:00
export.c	Btrfs: handle NFS lookups properly	2010-11-21 22:26:08 -05:00
export.h	NFS support for btrfs - v3	2008-09-25 11:04:06 -04:00
extent_io.c	Btrfs: fix fiemap	2010-11-27 13:37:50 -05:00
extent_io.h	btrfs: cleanup duplicate bio allocating functions	2010-11-21 22:26:03 -05:00
extent_map.c	Btrfs: Use ERR_CAST helpers	2010-10-29 15:14:23 -04:00
extent_map.h	Btrfs: search for an allocation hint while filling file COW	2009-09-18 16:08:52 -04:00
extent-tree.c	Btrfs: prevent RAID level downgrades when space is low	2010-12-13 20:07:01 -05:00
file-item.c	Btrfs: add basic DIO read/write support	2010-05-25 10:34:57 -04:00
file.c	Btrfs: pwrite blocked when writing from the mmaped buffer of the same page	2010-12-10 16:29:10 -05:00
free-space-cache.c	Btrfs: deal with space cache errors better	2010-12-09 13:57:12 -05:00
free-space-cache.h	Btrfs: load free space cache if it exists	2010-10-29 09:26:35 -04:00
hash.h	Btrfs: remove crc32c.h and use libcrc32c directly.	2009-06-10 11:29:53 -04:00
inode-item.c	Btrfs: Integrate metadata reservation with start_transaction	2010-05-25 10:34:50 -04:00
inode-map.c	Btrfs: do not reuse objectid of deleted snapshot/subvol	2009-09-21 15:56:00 -04:00
inode.c	Btrfs: fix compiler warnings	2010-12-10 16:29:11 -05:00
ioctl.c	Btrfs: Make async snapshot ioctl more generic	2010-12-10 16:29:11 -05:00
ioctl.h	Btrfs: Make async snapshot ioctl more generic	2010-12-10 16:29:11 -05:00
Kconfig	Revert "task_struct: make journal_info conditional"	2009-12-17 13:23:24 -08:00
locking.c	include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h	2010-03-30 22:02:32 +09:00
locking.h	Btrfs: fix spinlock assertions on UP systems	2009-03-09 11:45:38 -04:00
Makefile	Btrfs: Mixed back reference (FORWARD ROLLING FORMAT CHANGE)	2009-06-10 11:29:46 -04:00
ordered-data.c	Btrfs: deal with DIO bios that span more than one ordered extent	2010-11-28 19:56:33 -05:00
ordered-data.h	Btrfs: deal with DIO bios that span more than one ordered extent	2010-11-28 19:56:33 -05:00
orphan.c	Btrfs: fixup return code for btrfs_del_orphan_item	2010-12-09 13:57:15 -05:00
print-tree.c	Btrfs: remove of redundant btrfs_header_level	2009-07-22 16:52:13 -04:00
print-tree.h	Btrfs: Create extent_buffer interface for large blocksizes	2008-09-25 11:03:56 -04:00
ref-cache.c	include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h	2010-03-30 22:02:32 +09:00
ref-cache.h	Btrfs: use RB_ROOT to intialize rb_trees instead of setting rb_node to NULL	2010-03-08 16:26:50 -05:00
relocation.c	Btrfs: Fix variables set but not read (bugs found by gcc 4.6)	2010-10-29 15:14:31 -04:00
root-tree.c	Btrfs: cleanup warnings from gcc 4.6 (nonbugs)	2010-10-29 15:14:37 -04:00
struct-funcs.c	Btrfs: Fix checkpatch.pl warnings	2009-01-05 21:25:51 -05:00
super.c	Btrfs: Fix a crash when mounting a subvolume	2010-12-10 16:29:10 -05:00
sysfs.c	Driver core: Constify struct sysfs_ops in struct kobj_type	2010-03-07 17:04:49 -08:00
transaction.c	Btrfs: use dget_parent where we can UPDATED	2010-11-21 22:26:09 -05:00
transaction.h	Btrfs: add START_SYNC, WAIT_SYNC ioctls	2010-10-29 15:41:32 -04:00
tree-defrag.c	Btrfs: cleanup warnings from gcc 4.6 (nonbugs)	2010-10-29 15:14:37 -04:00
tree-log.c	Btrfs: use dget_parent where we can UPDATED	2010-11-21 22:26:09 -05:00
tree-log.h	Btrfs: Metadata ENOSPC handling for tree log	2010-05-25 10:34:53 -04:00
version.h	Update Btrfs files for in-kernel usage	2008-09-25 15:41:59 -04:00
version.sh	Btrfs: Fixes for 2.6.28-rc API changes	2008-11-19 21:17:22 -05:00
volumes.c	Btrfs: account for missing devices in RAID allocation profiles	2010-12-13 20:06:52 -05:00
volumes.h	Btrfs: account for missing devices in RAID allocation profiles	2010-12-13 20:06:52 -05:00
xattr.c	Btrfs: cleanup warnings from gcc 4.6 (nonbugs)	2010-10-29 15:14:37 -04:00
xattr.h	btrfs: constify xattr_handler	2010-05-21 18:31:18 -04:00
zlib.c	Btrfs: cleanup warnings from gcc 4.6 (nonbugs)	2010-10-29 15:14:37 -04:00