[PATCH v1 0/6] btrfs: scrub

[Arne Jansen <sensille@gmx.net>]

This series adds an initial implementation for scrub. It works quite
straightforward. The usermode issues an ioctl for each device in the
fs. For each device, it enumerates the allocated device chunks. For
each chunk, the contained extents are enumerated and the data checksums
fetched. The extents are read sequentially and the checksums verified.
If an error occurs (checksum or EIO), a good copy is searched for. If
one is found, the bad copy will be rewritten.
All enumerations happen from the commit roots. During a transaction
commit, the scrubs get paused and afterwards continue from the new
roots.
For future improvements please see the inline comments.

The accompanying user mode patches will follow shortly.

Thanks,
Arne

Arne Jansen (5):
Jan Schmidt (1):
  btrfs: add parameter to btrfs_lookup_csum_range
  btrfs: make struct map_lookup public
  btrfs: add state information for scrub
  btrfs: add scrub code and prototypes
  btrfs: sync scrub with commit & device removal
  btrfs: new ioctls for scrub

 fs/btrfs/Makefile      |    2 +-
 fs/btrfs/ctree.h       |   44 ++-
 fs/btrfs/disk-io.c     |   16 +
 fs/btrfs/file-item.c   |    8 +-
 fs/btrfs/inode.c       |    2 +-
 fs/btrfs/ioctl.c       |   85 +++
 fs/btrfs/ioctl.h       |   36 ++
 fs/btrfs/relocation.c  |    2 +-
 fs/btrfs/scrub.c       | 1462 ++++++++++++++++++++++++++++++++++++++++++++++++
 fs/btrfs/transaction.c |    3 +
 fs/btrfs/tree-log.c    |    6 +-
 fs/btrfs/volumes.c     |   16 +-
 fs/btrfs/volumes.h     |   17 +
 13 files changed, 1677 insertions(+), 22 deletions(-)
 create mode 100644 fs/btrfs/scrub.c

-- 
1.7.3.4