multipath-tools PR Q1/2021

[mwilck]

Hi Christophe,

I think it's about time for a new release.

Changelog

Except for the bottom 3 patches, which are minor fixes for github CI and the README, everything has been reviewed on dm-devel.

• multipath-tools: add linker version scripts (Martin Wilck). This is the most disruptive change, as it adds library versioning to our DSOs.
• multipath-tools: shutdown, libdevmapper races, globals (Martin Wilck)
  • Improve shutdown behavior and systemd notifications
  • Fix race conditions in libdevmapper calls (libdevmapper is not thread-safe)
  • Move global symbols into libmultipath
• libmultipath: improve cleanup on exit (Martin Wilck). This series improves how multipathd cleans up on exit. It avoids memory leaks and error messages from valgrind, and contains some other bug fixes.
• add library to check if device is a valid path (Benjamin Marzinski). This set adds the libmpathvalid library.
• Misc Multipath patches (Benjamin Marzinski)
  • add eh_deadline configuration parameter
  • avoid sending requests for VPD 0xc9 to non-RDAC storage arrays
• Various multipath-tools patches and multipath-tools: cleanup uevent generation on startup (Martin Wilck)
  • Fixes for the log thread
  • Fix crash on exit, unloading checker DSOs
  • Fix handling of incompletely initialized maps after initrd processing
  • Fix multipathd blocking on root FS access while IO is queued
  • Add library versioning to libmultipath plugins
• multipath-tools tests: unversioned .so for valgrind tests (Martin Wilck). Fixes for running unit tests under vagrind.
• More misc multipath patches (Benjamin Marzinski)
  • Fix issues with mpathpersist
  • Fix configuration file issues
  • Fix for systemd unit file
• Multipath io_err_stat fixes (Benjamin Marzinski)
• multipath: fixes for SAS expanders and root FS access (Martin Wilck)
• multipathd: fix path checkint not changed when path state changed from delay to failed (Chongyun Wu)
• libmpathpersist: fix thread safety of default functions (Benjamin Marzinski)
• libmultipath: check if adopt_path() really added current path (Martin Wilck)
• Minor multipath-tools patches (Martin Wilck). Attempts to fix the segmentaion faults reported by Huawei (lixiaokeng). With all patches from this PR applied, and with the -fexceptions compiler flag omitted when building systemd, Huawei didn't report any more crashes.
• consistent behavior of filter_property() (Martin Wilck)
• Handle remapped LUNs better and Fixups to my wwid recheck patch (Benjamin Marzinski, based on patch from Chongyun Wu). Try to avoid data corruption if a LUN changes WWID while temporarily offline. This series introduces the recheck_wwid configuration parameter. It includes this bug fix, too.
• libmutipath: only give out free user_friendly_names (Benjamin Marzinski)
• multipath-tools tests: allow control of test verbosity (Martin Wilck).
• kpartx: free loop device after listing partitions (Benjamin Marzinski)
• https://listman.redhat.com/archives/dm-devel/2021-February/msg00308.html
• libmultipath: merge update_multipath_table() and update_multipath_status() (Martin Wilck) 0.8.5 fixes: fix potential mis-parsing of map status in v0.8.5, and reduce log level of some new messages that turned out to be irritating.
• multipath-tools: extended github CI (Martin Wilck)
• Multiple fixes for compiler warnings and errors (Martin Wilck)
• Multiple documentation and hwtable fixes (Xose Vasquez Perez)