[PATCH 00/30] DBRD updates

From: Philipp Reisner
Date: Mon Apr 25 2016 - 08:23:02 EST


Hi Jens,

apart from the usual maintenance and bug fixes this time comes
support for WRITE_SAME and lots of improvemnts for DISCARD.

Overview:
As replication technology we want to use DISCARDs only if they
really zero the backing storage. Thin LVM does it but claims
not to do it. To make that reasonably usable with DRBD we
added this "discard_zeroes_if_aligned" hack^H^H^H^H configure
option. Please see the commit messages for all the details.

Please add it to your for-4.7/drivers branch.
Thanks!


Fabian Frederick (1):
drbd: code cleanups without semantic changes

Lars Ellenberg (24):
drbd: bitmap bulk IO: do not always suspend IO
drbd: change bitmap write-out when leaving resync states
drbd: adjust assert in w_bitmap_io to account for
BM_LOCKED_CHANGE_ALLOWED
drbd: fix regression: protocol A sometimes synchronous, C sometimes
double-latency
drbd: fix for truncated minor number in callback command line
drbd: allow parallel flushes for multi-volume resources
drbd: when receiving P_TRIM, zero-out partial unaligned chunks
drbd: possibly disable discard support, if backend has
discard_zeroes_data=0
drbd: zero-out partial unaligned discards on local backend
drbd: allow larger max_discard_sectors
drbd: finish resync on sync source only by notification from sync
target
drbd: introduce unfence-peer handler
drbd: don't forget error completion when "unsuspending" IO
drbd: if there is no good data accessible, writes should be IO errors
drbd: only restart frozen disk io when D_UP_TO_DATE
drbd: discard_zeroes_if_aligned allows "thin" resync for
discard_zeroes_data=0
drbd: report sizes if rejecting too small peer disk
drbd: introduce WRITE_SAME support
drbd: sync_handshake: handle identical uuids with current (frozen)
Primary
drbd: disallow promotion during resync handshake, avoid deadlock and
hard reset
drbd: bump current uuid when resuming IO with diskless peer
drbd: finally report ms, not jiffies, in log message
drbd: al_write_transaction: skip re-scanning of bitmap page pointer
array
drbd: correctly handle failed crypto_alloc_hash

Philipp Reisner (4):
drbd: Kill code duplication
drbd: Implement handling of thinly provisioned storage on resync
target nodes
drbd: Introduce new disk config option rs-discard-granularity
drbd: Create the protocol feature THIN_RESYNC

Roland Kammerer (1):
drbd: get rid of empty statement in is_valid_state

drivers/block/drbd/drbd_actlog.c | 29 +-
drivers/block/drbd/drbd_bitmap.c | 84 ++++--
drivers/block/drbd/drbd_debugfs.c | 13 +-
drivers/block/drbd/drbd_int.h | 49 +++-
drivers/block/drbd/drbd_interval.h | 14 +-
drivers/block/drbd/drbd_main.c | 115 +++++++-
drivers/block/drbd/drbd_nl.c | 282 +++++++++++++++-----
drivers/block/drbd/drbd_proc.c | 30 +--
drivers/block/drbd/drbd_protocol.h | 77 +++++-
drivers/block/drbd/drbd_receiver.c | 534 ++++++++++++++++++++++++++++++-------
drivers/block/drbd/drbd_req.c | 84 ++++--
drivers/block/drbd/drbd_req.h | 5 +-
drivers/block/drbd/drbd_state.c | 61 ++++-
drivers/block/drbd/drbd_state.h | 2 +-
drivers/block/drbd/drbd_strings.c | 8 +-
drivers/block/drbd/drbd_worker.c | 85 +++++-
include/linux/drbd.h | 10 +-
include/linux/drbd_genl.h | 7 +-
include/linux/drbd_limits.h | 15 +-
19 files changed, 1205 insertions(+), 299 deletions(-)

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1.9.1