[dm-devel] [PATCH v3 0/4] add library to check if device is a valid path

[Martin Wilck]

Hi Ben:

On Wed, 2020-10-21 at 16:39 -0500, Benjamin Marzinski wrote:
> The main part of the this patchset is the first patch, which adds a
> new library interface to check whether devices are valid paths. This
> was designed for use in the Storage Instantiation Daemon (SID).
> 
> https://github.com/sid-project
> 
> The seconds patch adds unit tests for this library. The third patch
> adds
> get_uid fallback code for dasd devices. The fourth patch just changes
> the get_uid log level for devices configured with uid_attribute "".
> This
> is because it is currently necessary to configure multipath with
> 
> overrides {
>         uid_attribute ""
> }
> 
> to claim multipath devices with SID (instead of using
> multipath.rules),
> since SID doesn't currently get the UID information itself, and it is
> called by udev before this information is added to the udev database.
> 
> changes from v1 to v2
> ---------------------
> 0001: This patch is now rebased on top of, and makes use of Martin's
> patches that provide a default *_multipath_config, udev, and logsink.
> Because of this, mpathvalid_init() now has a parameter used to set
> logsink. There is also a new API function,
> mpathvalid_reload_config().
> 
> 0003: This is completely new, since Martin pointed out that adding a
> new
> config option to always use the fallback getuid code was unnecessary.
> It
> just makes a uid_attribute of "" log at normal levels.
> 
> changes from v2 to v3
> ---------------------
> 0001:   rebased on top of Martin's latest patches, fixed some small
> bugs
>         and added documentation to mpath_valid.h
> 0002:   New
> 0004:   was 0003. Untangled the logic, at Martin's suggestion.
> 
> Benjamin Marzinski (4):
>   multipath: add libmpathvalid library
>   multipath-tools tests: and unit tests for libmpathvalid
>   libmultipath: add uid failback for dasd devices
>   libmultipath: change log level for null uid_attribute
> 
>  Makefile                            |   3 +-
>  Makefile.inc                        |   1 +
>  libmpathvalid/Makefile              |  39 +++
>  libmpathvalid/libmpathvalid.version |  10 +
>  libmpathvalid/mpath_valid.c         | 202 ++++++++++++
>  libmpathvalid/mpath_valid.h         | 155 +++++++++
>  libmultipath/defaults.h             |   1 +
>  libmultipath/discovery.c            |  45 ++-
>  libmultipath/libmultipath.version   |   6 +
>  tests/Makefile                      |   5 +-
>  tests/mpathvalid.c                  | 467
> ++++++++++++++++++++++++++++
>  11 files changed, 929 insertions(+), 5 deletions(-)
>  create mode 100644 libmpathvalid/Makefile
>  create mode 100644 libmpathvalid/libmpathvalid.version
>  create mode 100644 libmpathvalid/mpath_valid.c
>  create mode 100644 libmpathvalid/mpath_valid.h
>  create mode 100644 tests/mpathvalid.c
> 

For the set:
Reviewed-by: Martin Wilck <mwilck at suse.com>

I have created a new branch 
https://github.com/openSUSE/multipath-tools/tree/upstream-tip

where this is series applied on my recently posted series
"libmultipath: improve cleanup on exit" (v3), in the hope that it will
pass review, too. It has to be this way around because your set
requires libmp_verbosity.

As soon as my series is finalized, this will be pushed to upstream-
queue.

Regards,
Martin

-- 
Dr. Martin Wilck <mwilck at suse.com>, Tel. +49 (0)911 74053 2107
SUSE  Software Solutions Germany GmbH
HRB 36809, AG Nürnberg GF: Felix
Imendörffer