From: Martin Wilck <mwilck@xxxxxxxx> Hi Christophe, hi Ben, This is part IV of a larger patch series for multipath-tools I've been preparing. It's based on the previously submitted part III. The full series will also be available here: https://github.com/mwilck/multipath-tools/tree/ups/submit-2007 There are tags in that repo for each part of the series. This part is tagged "submit-200709-4". The dominant idea of the patches in this subseries is to move away from the device node name as the main path identifier towards the dev_t aka major/minor number. This is motivated by the fact that dev_t is used by the kernel device mapper for referring to devices, both maps and paths. If searching a device by dev_t fails, it's basically certain not to exist. DM calls with major/minor number may even succeed if the respective devnode has not been created yet. dev_t also works better for devices that aren't fully initialized yet. Of course we still track the device name, but mostly for log messages and user-directed output. In short, using dev_t as primary identifier makes our code more robust. The subseries also contains some unrelated fixes for functions I worked on while making these changes. Regards, Martin Martin Wilck (12): libmultipath: adopt_paths(): use find_path_by_devt() libmultipath: adopt_paths(): don't bail out on single path failure libmultipath: path_discover(): use find_path_by_devt() libmultipath: path_discover(): always set DI_BLACKLIST libmultipath: get_refwwid(): use find_path_by_devt() libmultipath: get_refwwid(): call get_multipath_config() only once libmultipath: get_refwwid(): get rid of "check" label libmultipath: get_refwwid(): use symbolic return values libmultipath: get_refwwid(): use switch statement libmultipath: constify get_mpe_wwid() multipath: call strchop() on command line argument libmultipath: get_refwwid(): skip strchop(), and constify dev parameter libmultipath/config.c | 2 +- libmultipath/config.h | 2 +- libmultipath/configure.c | 200 +++++++++++++------------------------ libmultipath/configure.h | 2 +- libmultipath/discovery.c | 32 +++--- libmultipath/structs_vec.c | 14 ++- multipath/main.c | 2 + 7 files changed, 94 insertions(+), 160 deletions(-) -- 2.26.2 -- dm-devel mailing list dm-devel@xxxxxxxxxx https://www.redhat.com/mailman/listinfo/dm-devel
