[dm-devel] [PATCH v3 00/12] snapshot-merge target

[Mike Snitzer]

snapshot-merge target, quilt tree is maintained here:
http://people.redhat.com/msnitzer/patches/snapshot-merge/kernel/2.6.33/

For LVM2 support please see:
http://people.redhat.com/msnitzer/patches/snapshot-merge/lvm2/LVM2-2.02.55/

This patch series builds on Alasdair's latest 'editing' quilt tree;
but also depends on "dm snapshot: rework writing to snapshot origin",
see: http://patchwork.kernel.org/patch/60691/

Mike Snitzer (2):
  dm exception store: snapshot-merge usage accounting
  dm snapshot: merge a linear region of chunks using one large IO

Mikulas Patocka (10):
  dm exception store: add snapshot-merge specific methods
  dm snapshot: add snapshot-merge target
  dm snapshot: merge target should not allocate new exceptions
  dm snapshot: do not allow more than one merging snapshot.
  dm snapshot: the merge procedure
  dm snapshot: queue writes to an area that is actively being merged
  dm snapshot: do not merge a chunk until active writes to it finish
  dm snapshot: make exceptions in other snapshots when merging
  dm snapshot: make exceptions if merge is dispatching to origin
  dm snapshot: redirect accesses to origin if merging snap invalidated

 drivers/md/dm-exception-store.h |   27 +++
 drivers/md/dm-snap-persistent.c |   91 +++++++++-
 drivers/md/dm-snap.c            |  409 +++++++++++++++++++++++++++++++++++++--
 3 files changed, 509 insertions(+), 18 deletions(-)