[Bug 1636145] Re: multipath: Unrecognised multipath feature request

[Mathieu Trudel-Lapierre]

Could this be something that is included only in a patch in SLES?

I'll look into it, it should be fairly easy to find the relevant patch
in git or in SLES packaging.

** Changed in: multipath-tools (Ubuntu)
       Status: New => Triaged

** Changed in: multipath-tools (Ubuntu)
   Importance: Undecided => Wishlist

** Changed in: multipath-tools (Ubuntu)
     Assignee: (unassigned) => Mathieu Trudel-Lapierre (cyphermox)

-- 
You received this bug notification because you are a member of Ubuntu
Foundations Bugs, which is subscribed to multipath-tools in Ubuntu.
https://bugs.launchpad.net/bugs/1636145

Title:
  multipath: Unrecognised multipath feature request

Status in multipath-tools package in Ubuntu:
  Triaged

Bug description:
  Hi.

  the following stanza in /etc/multipath.conf

  features              "2 queue_if_no_path no_partitions"

  
  produces the following error "multipath: Unrecognised multipath feature request" and no devices is visible under /dev/mapper

  If the line above is commented out, multipath works ok, although all
  the partitions within the devices under /dev/mapper are shown. I have
  also tried using

  features              "1 no_partitions"

  and it didn't work

  
  This configuration is been used in production machines  running SLES 11SP3 - SLES 12SP1 and it is working as expected

  -------------------------------------------------------------------------------------------

  lsb_release -rd
  Description:	Ubuntu 16.04.1 LTS
  Release:	16.04

  
  -------------------------------------------------------------------------------------------

  
  apt-cache policy multipath-tools
  multipath-tools:
    Installed: 0.5.0+git1.656f8865-5ubuntu2.2
    Candidate: 0.5.0+git1.656f8865-5ubuntu2.2
    Version table:
   *** 0.5.0+git1.656f8865-5ubuntu2.2 500
          500 http://us.archive.ubuntu.com/ubuntu xenial-updates/main amd64 Packages
          100 /var/lib/dpkg/status
       0.5.0+git1.656f8865-5ubuntu2 500
          500 http://us.archive.ubuntu.com/ubuntu xenial/main amd64 Packages

  
  -------------------------------------------------------------------------------------------

  cat /etc/multipath.conf

  blacklist {
          devnode "^(ram|raw|loop|fd|md|dm-|sr|scd|st)[0-9]*"
          devnode "^hd[a-z]"
          devnode "^dcssblk[0-9]*"
          devnode "^(td|hd|vd)[a-z]"
          devnode "^nvme.*"
          devnode "^cciss!c[0-9]d[0-9]*"
          device {
                  vendor  "DELL"
                  product ".*"
          }
  }
  blacklist_exceptions {
          device {
                  vendor  "DELL"
                  product "MD32xxi"
          }
  }
  defaults {
          user_friendly_names yes
          max_fds             8192
  }
  devices {
          device {
                  vendor                "DELL"
                  product               "MD32xxi"
                  path_grouping_policy  group_by_prio
                  prio                  rdac
  #               polling_interval      5
                  path_checker          rdac
                  path_selector         "round-robin 0"
  #               hardware_handler      "1 rdac"
                  failback              immediate
                  features              "2 queue_if_no_path no_partitions"
                  #no_path_retry        30
                  rr_min_io             100
  #               prio_callout          "/sbin/mpath_prio_rdac /dev/%n"
          }
  }

To manage notifications about this bug go to:
https://bugs.launchpad.net/ubuntu/+source/multipath-tools/+bug/1636145/+subscriptions