10:57 p.m.
Since v1:
- rework .can_cache to be tri-state, with default of no advertisement
(ripple effect through other patches)
- add a lot more patches in order to round out filter support
And in the meantime, Rich pushed NBD_CMD_CACHE support into libnbd, so
in theory we now have a way to test cache commands through the entire
stack.
Eric Blake (24):
server: Internal hooks for implementing NBD_CMD_CACHE
plugins: Add .cache callback
file, split: Implement .cache with posix_fadvise
plugins: Implement .pread emulation cache
plugins: Implement no-op .cache for in-memory plugins
nbd: Implement NBD_CMD_CACHE passthrough
sh: Implement .cache script callback
ocaml: Implement .cache script callback
plugins: Document lack of .cache in language bindings
filters: Add .cache callback
test-layers: Test .cache usage
test-eflags: Test .can_cache support
blocksize: Implement .cache rounding
cache: Implement .cache
cow: Implement .cache
delay: Implement .cache
error: Implement .cache
log: Implement .cache
offset, partition: Implement .cache
readahead, xz: Implement .can_cache via emulation
stats: Implement .cache
truncate: Implement .cache
filters: Pass through .can_cache for remaining filters
nocache: Implement new filter
docs/nbdkit-filter.pod | 42 +++++--
docs/nbdkit-plugin.pod | 82 +++++++++++++
docs/nbdkit-protocol.pod | 8 ++
filters/cache/nbdkit-cache-filter.pod | 6 +-
filters/cow/nbdkit-cow-filter.pod | 15 ++-
filters/delay/nbdkit-delay-filter.pod | 9 +-
filters/error/nbdkit-error-filter.pod | 8 +-
filters/fua/nbdkit-fua-filter.pod | 5 +-
filters/log/nbdkit-log-filter.pod | 10 +-
filters/nocache/nbdkit-nocache-filter.pod | 69 +++++++++++
filters/noextents/nbdkit-noextents-filter.pod | 2 +
filters/nozero/nbdkit-nozero-filter.pod | 2 +
plugins/lua/nbdkit-lua-plugin.pod | 3 +-
plugins/perl/nbdkit-perl-plugin.pod | 2 +-
plugins/python/nbdkit-python-plugin.pod | 2 +-
plugins/ruby/nbdkit-ruby-plugin.pod | 2 +-
plugins/sh/nbdkit-sh-plugin.pod | 27 ++++-
plugins/tcl/nbdkit-tcl-plugin.pod | 3 +-
configure.ac | 5 +-
common/protocol/protocol.h | 2 +
filters/cache/blk.h | 10 +-
filters/cow/blk.h | 16 ++-
include/nbdkit-common.h | 4 +
include/nbdkit-filter.h | 8 ++
include/nbdkit-plugin.h | 2 +
server/internal.h | 5 +
filters/blocksize/blocksize.c | 29 +++++
filters/cache/blk.c | 50 +++++++-
filters/cache/cache.c | 53 ++++++++
filters/cow/blk.c | 41 ++++++-
filters/cow/cow.c | 90 ++++++++++++++
filters/delay/delay.c | 27 ++++-
filters/error/error.c | 32 ++++-
filters/log/log.c | 29 ++++-
filters/nocache/nocache.c | 113 ++++++++++++++++++
filters/offset/offset.c | 12 +-
filters/partition/partition.c | 12 ++
filters/readahead/readahead.c | 13 ++
filters/stats/stats.c | 23 ++++
filters/truncate/truncate.c | 24 ++++
filters/xz/xz.c | 15 ++-
plugins/data/data.c | 11 ++
plugins/ext2/ext2.c | 10 +-
plugins/file/file.c | 37 ++++++
plugins/floppy/floppy.c | 11 +-
plugins/full/full.c | 13 +-
plugins/iso/iso.c | 10 +-
plugins/linuxdisk/linuxdisk.c | 9 ++
plugins/memory/memory.c | 11 ++
plugins/nbd/nbd.c | 24 ++++
plugins/null/null.c | 13 +-
plugins/ocaml/ocaml.c | 51 ++++++++
plugins/partitioning/partitioning.c | 11 +-
plugins/pattern/pattern.c | 13 +-
plugins/random/random.c | 13 +-
plugins/sh/sh.c | 81 +++++++++++++
plugins/split/split.c | 52 +++++++-
plugins/zero/zero.c | 13 +-
server/filters.c | 59 ++++++++-
server/plugins.c | 44 +++++++
server/protocol-handshake.c | 9 ++
server/protocol.c | 26 ++++
tests/test-layers-filter.c | 22 +++-
tests/test-layers-plugin.c | 17 +++
tests/test-layers.c | 36 ++++++
filters/nocache/Makefile.am | 61 ++++++++++
plugins/ocaml/NBDKit.ml | 16 ++-
plugins/ocaml/NBDKit.mli | 5 +
plugins/sh/example.sh | 7 ++
tests/test-eflags.sh | 36 +++++-
70 files changed, 1570 insertions(+), 63 deletions(-)
create mode 100644 filters/nocache/nbdkit-nocache-filter.pod
create mode 100644 filters/nocache/nocache.c
create mode 100644 filters/nocache/Makefile.am
--
2.20.1