[dm-devel] [PATCH 0/6] multipath: path validation library prep work

[Benjamin Marzinski]

On Thu, May 14, 2020 at 08:59:16PM -0500, Benjamin Marzinski wrote:
> I've been playing around with the SID code more and I've decided to hold
> off on submitting the library until I have it working with the SID
> multipath module better. Instead, I've pulled out the common code that
> multipath -u/-c and the library can use, and put it into libmultipath.
> 
> I've also removed some of the ordering differences between the existing
> code and my new code.  Right now, the only difference is that if a path
> is currently multipathed, it will always be claimed as a valid path.
> 
> Patches 0001 & 0002 are the same as in my "RFC PATCH v2" set, and patch
> 0005 is the same as my "libmultipath: simplify failed wwid code" patch.
> 
> Only patches 0003 and 0004 haven't been posted before.
> 

Just a note on applying this. This patch set is meant to be applied on
top of Martin's recent patchsets.

-Ben

> Benjamin Marzinski (5):
>   libmultipath: make libmp_dm_init optional
>   libmultipath: make sysfs_is_multipathed able to return wwid
>   multipath: centralize validation code
>   Unit tests for is_path_valid()
>   libmultipath: simplify failed wwid code
> 
> Martin Wilck (1):
>   libmultipath: use atomic linkat() in mark_failed_wwid()
> 
>  libmultipath/Makefile    |   2 +-
>  libmultipath/devmapper.c |  66 +++++-
>  libmultipath/devmapper.h |   4 +-
>  libmultipath/structs.h   |  24 +--
>  libmultipath/sysfs.c     |  24 ++-
>  libmultipath/sysfs.h     |   2 +-
>  libmultipath/valid.c     | 118 +++++++++++
>  libmultipath/valid.h     |  32 +++
>  libmultipath/wwids.c     | 165 ++++++++-------
>  multipath/main.c         | 295 ++++++++++++---------------
>  tests/Makefile           |   4 +-
>  tests/valid.c            | 424 +++++++++++++++++++++++++++++++++++++++
>  12 files changed, 875 insertions(+), 285 deletions(-)
>  create mode 100644 libmultipath/valid.c
>  create mode 100644 libmultipath/valid.h
>  create mode 100644 tests/valid.c
> 
> -- 
> 2.17.2
> 
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