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

[ivan]

Public bug reported:

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"
        }
}

** Affects: multipath-tools (Ubuntu)
     Importance: Undecided
         Status: New

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https://bugs.launchpad.net/bugs/1636145

Title:
  multipath: Unrecognised multipath feature request

Status in multipath-tools package in Ubuntu:
  New

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"
          }
  }

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