Hi Neil,
So here is a second attempt at platform support. I asked around about
scanning for the option-rom and the solution I settled on was to port
the kernel's "Adapter ROM" detection code to userspace (probe_roms.c
from arch/x86/kernel/probe_roms_32.c). This at least makes mdadm bug
compatible with the kernel, and avoids scanning the entire region
indiscriminately.
Create support got two major fixes:
1/ calculating a common start offset by merging get_extents() results
2/ explicitly passing the target member disks in the metadata update
message
Despite the platform support and these fixes I am still investigating
whether mdadm can create configurations that the option-rom does not
understand. Stay tuned...
Lastly I added a regression test to stress the overlapping create case,
it adds some infrastructure for tests to define their own environment.
As always, please have a look.
Thanks,
Dan
The following changes since commit 5a52a340905d1a9d0a268ce2621f55db6b3fd423:
NeilBrown (1):
Merge branch 'master' into devel-3.0
are available in the git repository at:
git://git.kernel.org/pub/scm/linux/kernel/git/djbw/mdadm.git devel
Dan Williams (17):
fix ->metadata_version checking in Wait()
wait_for container assembly
imsm: fix setting of device size for raid1
imsm: correct start offset handling at create time
imsm: pass disk info in create message
port arch/x86/kernel/probe_roms_32.c for use in 'platform' support
imsm: detect option-rom capabilities
imsm: sysfs support routines for determining device connectivity
imsm: validate arrays being created against firmware capabilities
introduce --detail-platform to display platform raid capabilities
imsm: provide a detail_platform method
imsm: convert dev_tbl to devlist
imsm: reverse swapped arguments to posix_memalign in imsm_prepare_update
imsm: don't take chunk_size into account for raid1
test: enable per-test custom environment setup/teardown
workaround a hald interaction and quiet cleanup
imsm: test overlapping creates
Assemble.c | 1 +
Detail.c | 41 +++
Makefile | 13 +-
Monitor.c | 2 +-
ReadMe.c | 2 +
mdadm.8 | 35 ++-
mdadm.c | 4 +
mdadm.h | 6 +
platform-intel.c | 239 +++++++++++++
platform-intel.h | 129 +++++++
probe_roms.c | 279 +++++++++++++++
probe_roms.h | 24 ++
super-ddf.c | 1 +
super-intel.c | 845 ++++++++++++++++++++++++++++++++++++++++------
super0.c | 1 +
super1.c | 1 +
test | 21 ++-
tests/08imsm-overlap | 25 ++
tests/env-08imsm-overlap | 1 +
tests/env-imsm | 68 ++++
20 files changed, 1620 insertions(+), 118 deletions(-)
create mode 100644 platform-intel.c
create mode 100644 platform-intel.h
create mode 100644 probe_roms.c
create mode 100644 probe_roms.h
create mode 100644 tests/08imsm-overlap
create mode 120000 tests/env-08imsm-overlap
create mode 100644 tests/env-imsm
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