linux.git/include/uapi/linux/btrfs_tree.h, branch v5.8

btrfs: remove more obsolete v0 extent ref declarations

2020-05-25T09:25:29+00:00

The extent references v0 have been superseded long time go, there are
some unused declarations of access helpers. We can safely remove them
now. The struct btrfs_extent_ref_v0 is not used anywhere, but struct
btrfs_extent_item_v0 is still part of a backward compatibility check in
relocation.c and thus not removed.

Signed-off-by: David Sterba

btrfs: add support for 4-copy replication (raid1c4)

2019-11-18T16:51:49+00:00

Add new block group profile to store 4 copies in a simliar way that
current RAID1 does.  The profile attributes and constraints are defined
in the raid table and used by the same code that already handles the 2-
and 3-copy RAID1.

The minimum number of devices is 4, the maximum number of devices/chunks
that can be lost/damaged is 3. There is no comparable traditional RAID
level, the profile is added for future needs to accompany triple-parity
and beyond.

Signed-off-by: David Sterba

btrfs: add support for 3-copy replication (raid1c3)

2019-11-18T16:51:49+00:00

Add new block group profile to store 3 copies in a simliar way that
current RAID1 does. The profile attributes and constraints are defined
in the raid table and used by the same code that already handles the
2-copy RAID1.

The minimum number of devices is 3, the maximum number of devices/chunks
that can be lost/damaged is 2. Like RAID6 but with 33% space
utilization.

Signed-off-by: David Sterba

btrfs: add blake2b to checksumming algorithms

2019-11-18T16:51:44+00:00

Add blake2b (with 256 bit digest) to the list of possible checksumming
algorithms used by BTRFS.

Signed-off-by: David Sterba

btrfs: add sha256 to checksumming algorithm

2019-11-18T16:51:43+00:00

Add sha256 to the list of possible checksumming algorithms used by BTRFS.

Signed-off-by: Johannes Thumshirn 
Reviewed-by: David Sterba 
Signed-off-by: David Sterba

btrfs: add xxhash64 to checksumming algorithms

2019-11-18T16:51:43+00:00

Add xxhash64 to the list of possible checksumming algorithms used by
BTRFS.

Signed-off-by: Johannes Thumshirn 
Reviewed-by: David Sterba 
Signed-off-by: David Sterba

btrfs: use enum for extent type defines

2019-11-18T11:46:55+00:00

Use enum to replace macro definitions of extent types.

Signed-off-by: Chengguang Xu 
Reviewed-by: David Sterba 
Signed-off-by: David Sterba

btrfs: turn checksum type define into an enum

2019-09-09T12:59:19+00:00

Turn the checksum type definition into a enum. This eases later addition
of new checksums.

Reviewed-by: Nikolay Borisov 
Signed-off-by: Johannes Thumshirn 
Reviewed-by: David Sterba 
Signed-off-by: David Sterba

btrfs: replace: BTRFS_DEV_REPLACE_ITEM_STATE_x defines should go

2019-09-09T12:59:11+00:00

The BTRFS_DEV_REPLACE_ITEM_STATE_x defines, as shown in [1], are
unused in both kernel and btrfs-progs (except for one instance of
BTRFS_DEV_REPLACE_ITEM_STATE_NEVER_STARTED in kernel).

[1]
btrfs.h:#define BTRFS_IOCTL_DEV_REPLACE_STATE_FINISHED        2
btrfs.h:#define BTRFS_IOCTL_DEV_REPLACE_STATE_CANCELED        3
btrfs.h:#define BTRFS_IOCTL_DEV_REPLACE_STATE_SUSPENDED       4

Further these define-values are different form its counterpart
BTRFS_IOCTL_DEV_REPLACE_STATE_x series as shown in [2].

[2]
btrfs_tree.h:#define BTRFS_DEV_REPLACE_ITEM_STATE_SUSPENDED   2
btrfs_tree.h:#define BTRFS_DEV_REPLACE_ITEM_STATE_FINISHED    3
btrfs_tree.h:#define BTRFS_DEV_REPLACE_ITEM_STATE_CANCELED    4

So this patch deletes the BTRFS_DEV_REPLACE_ITEM_STATE_x altogether, and
one instance of BTRFS_DEV_REPLACE_ITEM_STATE_NEVER_STARTED is replaced
with BTRFS_IOCTL_DEV_REPLACE_STATE_NEVER_STARTED in the kernel.

Signed-off-by: Anand Jain 
Reviewed-by: David Sterba 
Signed-off-by: David Sterba

btrfs: add mask for all RAID1 types

2019-07-02T10:30:48+00:00

Preparatory patch for additional RAID1 profiles with more copies. The
mask will contain 3-copy and 4-copy, most of the checks for plain RAID1
work the same for the other profiles.

Signed-off-by: David Sterba