[dm-devel] [PATCH 0/4] libmultipath: utter less dev_loss_tmo warnings

[mwilck at suse.com]

From: Martin Wilck <mwilck at suse.com>

Hi Christophe,

since 3ab1f3b ("libmultipath: print message if setting dev_loss_tmo is unsupported"),
multipathd prints a warning at level 2 for every map for which dev_loss_tmo can't
be set. This results in a large number of warnings if there are many maps with such
unsupported protocols, like this:

multipathd[1398]: 36001405328d6683b6cb4739943adf643: setting dev_loss_tmo is unsupported for protocol scsi:unspec

This patch set makes changes the code to print this warning only once per unsupported
protocol. It would have been simpler to never print the warning more than once, but
I figured that might suppress important information in some cases.

Regards
Martin

Martin Wilck (4):
  libmultipath: enable linear ordering of bus/proto tuple
  libmultipath: use bus_protocol_id() in snprint_path_protocol()
  libmultipath: enable defining a static bitfield
  libmultipath: only warn once about unsupported dev_loss_tmo

 libmultipath/discovery.c |  4 ++-
 libmultipath/print.c     | 58 +++++++++++++++-------------------------
 libmultipath/structs.c   | 10 +++++++
 libmultipath/structs.h   | 13 +++++++--
 libmultipath/util.h      | 10 +++++++
 5 files changed, 55 insertions(+), 40 deletions(-)

-- 
2.35.1