On 10/29/2016 04:55 AM, Benjamin Marzinski wrote:
This option gives multipath the ability to stop kpartx from running. The previous idea, the "no_partitions" feature, was not accepted in the upstream kernel. This method uses one of the dm cookie subsystem flags DM_SUBSYSTEM_UDEV_FLAG1, which can be checked by udev to skip running kpartx when processing the event. This patch does most of the work necessary to make this work. It doesn't change kpartx.rules, however. Also, if dm_suspend_and_flush_map fails, multipath doesn't know how the device is configured. so, it simply checks if the device has any partitions before attempting the remove, and if not, sets the DM_SUBSYSTEM_UDEV_FLAG1 on the resume after failure, so that no partitions will be generated. Signed-off-by: Benjamin Marzinski <bmarzins@xxxxxxxxxx> --- libmultipath/config.c | 2 ++ libmultipath/config.h | 3 +++ libmultipath/configure.c | 5 +++-- libmultipath/defaults.h | 1 + libmultipath/devmapper.c | 45 +++++++++++++++++++++++++++++++-------------- libmultipath/devmapper.h | 8 +++++++- libmultipath/dict.c | 13 +++++++++++++ libmultipath/propsel.c | 18 ++++++++++++++++++ libmultipath/propsel.h | 1 + libmultipath/structs.h | 7 +++++++ multipath/multipath.conf.5 | 17 +++++++++++++++++ multipathd/cli_handlers.c | 4 +++- 12 files changed, 106 insertions(+), 18 deletions(-)
Thank you for this. Reviewed-by: Hannes Reinecke <hare@xxxxxxxx> Cheers, Hannes -- Dr. Hannes Reinecke zSeries & Storage hare@xxxxxxx +49 911 74053 688 SUSE LINUX Products GmbH, Maxfeldstr. 5, 90409 Nürnberg GF: J. Hawn, J. Guild, F. Imendörffer, HRB 16746 (AG Nürnberg) -- dm-devel mailing list dm-devel@xxxxxxxxxx https://www.redhat.com/mailman/listinfo/dm-devel
