This series is the first effort to support NVDIMM for bcache: store
journal meta data on nvdimm namespace.
With this series, a NVDIMM namespace can be formatted as a bcache
meta device with '-M' option. This meta device can be shared among
multiple cache sets.
Except for adding BCH_FEATURE_INCOMPAT_NVDIMM_META to incompatible
feature set, there is no on-disk layout change for supporting NVDIMM.
A new super block format struct bch_nvm_pages_sb is introduced for
the NVDIMM meta-data device, it might be changed time-to-time before
the EXPERIMENTAL removed from Linux kernel code.
This series is just enough to make things work, more changes will
follow up to make more improvement later.
Coly Li
---
Coly Li (6):
bcache-tools: add initial data structures for nvm_pages
bcache-tools: reduce parameters of write_sb()
bcache-tools: add BCH_FEATURE_INCOMPAT_NVDIMM_META to incompatible
feature set
bcache-tools: move super block info display routines into show.c
bcache-tools: write nvm namespace super block on nvdimm
bcache-tools: support "bcache show -d" for nvdimm-meta device
Makefile | 2 +-
bcache-super-show.c | 24 ----
bcache.c | 289 +--------------------------------------
bcache.h | 7 +-
features.c | 2 +
lib.c | 158 +++++++++++++++++++---
lib.h | 28 +++-
make.c | 244 +++++++++++++++++++++++++++++----
nvm_pages.h | 187 ++++++++++++++++++++++++++
show.c | 321 ++++++++++++++++++++++++++++++++++++++++++++
show.h | 10 ++
11 files changed, 917 insertions(+), 355 deletions(-)
create mode 100644 nvm_pages.h
create mode 100644 show.c
create mode 100644 show.h
--
2.26.2
