exclude assembling arrays with other homehost

[Emilio Hodge <whiz@home.nl>]

As I understand it it should be possible to exclude the auto assembling 
of arrays with other homehost metadata.

bash-4.2$ cat /etc/mdadm.conf
HOMEHOST Dimmel
AUTO homehost -all

But still all arrays are assembled vega:* should not be assembled
bash-4.2$ ls /dev/md*
/dev/md0    /dev/md113  /dev/md115  /dev/md117  /dev/md119 /dev/md121  
/dev/md123  /dev/md125  /dev/md127
/dev/md112  /dev/md114  /dev/md116  /dev/md118  /dev/md120 /dev/md122  
/dev/md124  /dev/md126

/dev/md:
0  boot  camera  film  home  lib64  music  opt  rest  share  src swap  
usr  var  vartmp  vega:centos  vega:part

root@Dimmel:~# mdadm --detail /dev/md/vega:*
/dev/md/vega:centos:
         Version : 1.2
   Creation Time : Fri Mar 15 13:17:09 2013
      Raid Level : raid10
      Array Size : 52132864 (49.72 GiB 53.38 GB)
   Used Dev Size : 26066432 (24.86 GiB 26.69 GB)
    Raid Devices : 4
   Total Devices : 4
     Persistence : Superblock is persistent

     Update Time : Sat Sep 28 13:28:11 2013
           State : clean
  Active Devices : 4
Working Devices : 4
  Failed Devices : 0
   Spare Devices : 0

          Layout : far=2
      Chunk Size : 256K

            Name : vega:centos
            UUID : 9844dbe6:cc95a8a9:ba929cec:d2212a79
          Events : 94

     Number   Major   Minor   RaidDevice State
        4     259       14        0      active sync   /dev/sda17
        1     259       10        1      active sync   /dev/sdb17
        2     259        1        2      active sync   /dev/sdc17
        3     259        6        3      active sync   /dev/sdd17
/dev/md/vega:part:
         Version : 1.0
   Creation Time : Fri Mar 15 11:34:56 2013
      Raid Level : raid1
      Array Size : 131008 (127.96 MiB 134.15 MB)
   Used Dev Size : 131008 (127.96 MiB 134.15 MB)
    Raid Devices : 4
   Total Devices : 4
     Persistence : Superblock is persistent

     Update Time : Sat Sep 28 13:28:11 2013
           State : clean
  Active Devices : 4
Working Devices : 4
  Failed Devices : 0
   Spare Devices : 0

            Name : vega:part
            UUID : acefa3a1:64aece9e:3cd30f5b:f2cbc91d
          Events : 69

     Number   Major   Minor   RaidDevice State
        4     259       13        0      active sync   /dev/sda16
        1     259        9        1      active sync   /dev/sdb16
        2     259        0        2      active sync   /dev/sdc16
        3     259        5        3      active sync   /dev/sdd16

Maybe the problem is with udev rules

bash-4.2$ cat 64-md-raid.rules
# do not edit this file, it will be overwritten on update

SUBSYSTEM!="block", GOTO="md_end"

# handle potential components of arrays (the ones supported by md)
ENV{ID_FS_TYPE}=="ddf_raid_member|isw_raid_member|linux_raid_member", 
GOTO="md_inc"
GOTO="md_inc_skip"

LABEL="md_inc"

# remember you can limit what gets auto/incrementally assembled by
# mdadm.conf(5)'s 'AUTO' and selectively whitelist using 'ARRAY'
ACTION=="add", RUN+="/sbin/mdadm --incremental $tempnode --offroot"
ACTION=="remove", ENV{ID_PATH}=="?*", RUN+="/sbin/mdadm -If $name --path 
$env{ID_PATH}"
ACTION=="remove", ENV{ID_PATH}!="?*", RUN+="/sbin/mdadm -If $name"

LABEL="md_inc_skip"

# handle md arrays
ACTION!="add|change", GOTO="md_end"
KERNEL!="md*", GOTO="md_end"

# partitions have no md/{array_state,metadata_version}, but should not
# for that reason be ignored.
ENV{DEVTYPE}=="partition", GOTO="md_ignore_state"

# container devices have a metadata version of e.g. 'external:ddf' and
# never leave state 'inactive'
ATTR{md/metadata_version}=="external:[A-Za-z]*", 
ATTR{md/array_state}=="inactive", GOTO="md_ignore_state"
TEST!="md/array_state", ENV{SYSTEMD_READY}="0", GOTO="md_end"
ATTR{md/array_state}=="|clear|inactive", ENV{SYSTEMD_READY}="0", 
GOTO="md_end"
LABEL="md_ignore_state"

IMPORT{program}="/sbin/mdadm --detail --export $tempnode"
ENV{DEVTYPE}=="disk", ENV{MD_NAME}=="?*", 
SYMLINK+="disk/by-id/md-name-$env{MD_NAME}", 
OPTIONS+="string_escape=replace"
ENV{DEVTYPE}=="disk", ENV{MD_UUID}=="?*", 
SYMLINK+="disk/by-id/md-uuid-$env{MD_UUID}"
ENV{DEVTYPE}=="disk", ENV{MD_DEVNAME}=="?*", SYMLINK+="md/$env{MD_DEVNAME}"
ENV{DEVTYPE}=="partition", ENV{MD_NAME}=="?*", 
SYMLINK+="disk/by-id/md-name-$env{MD_NAME}-part%n", 
OPTIONS+="string_escape=replace"
ENV{DEVTYPE}=="partition", ENV{MD_UUID}=="?*", 
SYMLINK+="disk/by-id/md-uuid-$env{MD_UUID}-part%n"
ENV{DEVTYPE}=="partition", ENV{MD_DEVNAME}=="*[^0-9]", 
SYMLINK+="md/$env{MD_DEVNAME}%n"
ENV{DEVTYPE}=="partition", ENV{MD_DEVNAME}=="*[0-9]", 
SYMLINK+="md/$env{MD_DEVNAME}p%n"

IMPORT{program}="/sbin/blkid -o udev -p $tempnode"
OPTIONS+="link_priority=100"
OPTIONS+="watch"
ENV{ID_FS_USAGE}=="filesystem|other|crypto", ENV{ID_FS_UUID_ENC}=="?*", 
SYMLINK+="disk/by-uuid/$env{ID_FS_UUID_ENC}"
ENV{ID_FS_USAGE}=="filesystem|other", ENV{ID_FS_LABEL_ENC}=="?*", 
SYMLINK+="disk/by-label/$env{ID_FS_LABEL_ENC}"

LABEL="md_end"
bash-4.2$ cat 80-udisks.rules
# Do not edit this file, it will be overwritten on updates
#

# import names for PCI storage controllers
#
SUBSYSTEM=="pci", ACTION=="add|change", ENV{ID_MODEL_FROM_DATABASE}=="", 
ATTR{class}=="0x01*", IMPORT{program}="pci-db %p"

# Set eSATA port type for known eSATA CardBus adapters - first we want 
to ensure
# the device is on a cardbus controller (upper PCI device) - then we check
# vid/pid (lower PCI device)
#
SUBSYSTEM=="scsi_host", ATTRS{class}=="0x060700", GOTO="ata_port_cardbus"
GOTO="ata_port_cardbus_end"
LABEL="ata_port_cardbus"
# Mass storage controller: Silicon Image, Inc. SiI 3512 
[SATALink/SATARaid] Serial ATA Controller (rev 01)
#
SUBSYSTEMS=="pci", ATTRS{vendor}=="0x1095", ATTRS{device}=="0x3512", 
ENV{UDISKS_ATA_PORT_CONNECTOR_TYPE}="ata_sata_external"
LABEL="ata_port_cardbus_end"

# probe SAS expanders
#
# (hmm, this might be racy, we might not have the BSG device just yet - if
#  this is the case we can trigger a 'change' on the sas_expander device
#  when the bsg device appears)
#
SUBSYSTEM=="sas_expander", ACTION=="add|change", 
IMPORT{program}="udisks-probe-sas-expander /sys/%p"

############################################################################################################## 


# from here on, we only care about block devices
ACTION!="add|change", GOTO="udisks_end"
SUBSYSTEM!="block", GOTO="udisks_end"
KERNEL=="ram*", GOTO="udisks_end"

# Mark devices that shouldn't be automounted / autoassembled etc.
#
# Deny all, then punch holes for what looks like physical drives
# (TODO: this heuristic might need some work)
#

ENV{UDISKS_PRESENTATION_NOPOLICY}="1"
KERNEL=="sd*|hd*|sr*|mmcblk*|mspblk*", 
ENV{UDISKS_PRESENTATION_NOPOLICY}="0"

############################################################################################################## 


# we only care about change events on device-mapper
# devices - never touch the device on add events
KERNEL=="dm-*", ACTION!="change", GOTO="udisks_end"

# honor the flag that device-mapper sets if the device should be ignored
ENV{DM_UDEV_DISABLE_OTHER_RULES_FLAG}=="1", GOTO="udisks_end"
ENV{DM_UDEV_DISABLE_DISK_RULES_FLAG}=="1", GOTO="udisks_end"

# import UDISKS_DM_* and UDISKS_LVM2_* properties - the long-term plan 
is to make the lvm2 and
# device-mapper packages provide this information
#
KERNEL=="dm-*", IMPORT{program}="udisks-dm-export %M %m"

# Make udevd synthesize a 'change' uevent when last opener of a rw-fd 
closes the fd - this
# should be part of the device-mapper rules
KERNEL=="dm-*", OPTIONS+="watch"

############################################################################################################## 

# Probe LVM2 Physical Volumes - this will eventually be part of the LVM2 
package

ENV{ID_FS_TYPE}=="LVM2_member", TEST=="/lib/udev/udisks-lvm-pv-export", 
IMPORT{program}="udisks-lvm-pv-export $env{ID_FS_UUID}"

############################################################################################################## 


# Probe for partition tables; this really should be part of udev / 
util-linux-ng
#

# skip rules for inappropriate block devices
KERNEL=="fd*|mtd*|nbd*|gnbd*|btibm*", GOTO="probe_parttable_end"

# never access non-cdrom removable ide devices, the drivers are causing 
event loops on open()
KERNEL=="hd*[!0-9]", ATTR{removable}=="1", SUBSYSTEMS=="ide", 
ATTRS{media}=="disk|floppy", GOTO="probe_parttable_end"
KERNEL=="hd*[0-9]", ATTR{removable}=="1", GOTO="probe_parttable_end"

# don't scan for partition tables on empty discs
KERNEL=="sr*", ENV{ID_CDROM_MEDIA}!="?*", GOTO="probe_parttable_end"

# skip non-data discs (see 
https://bugzilla.kernel.org/show_bug.cgi?id=15757 for the udev bits)
KERNEL=="sr*", ENV{ID_CDROM_MEDIA_TRACK_COUNT_DATA}=="", 
GOTO="probe_parttable_end"

# scan for partition tables both on whole-disk and partitions
#
IMPORT{program}="udisks-part-id $tempnode"

LABEL="probe_parttable_end"

############################################################################################################## 


# pick up data from MD components; this REALLY should be done by rules 
installed
# by mdadm or the kernel package
#
ENV{ID_FS_TYPE}!="linux_raid_member", GOTO="md_end"

# avoid probing if it has already been done earlier
#
ENV{MD_LEVEL}!="", GOTO="md_end"
IMPORT{program}="/sbin/mdadm --examine --export $tempnode"

LABEL="md_end"

############################################################################################################## 


# Check if a disk is ATA SMART capable
#

# USB ATA enclosures with a SAT layer
KERNEL=="sd*[!0-9]", ATTR{removable}=="0", ENV{ID_BUS}=="usb", 
ENV{DEVTYPE}=="disk", IMPORT{program}="udisks-probe-ata-smart $tempnode"

# ATA disks driven by libata
KERNEL=="sd*[!0-9]", ATTR{removable}=="0", ENV{ID_BUS}=="ata", 
ENV{DEVTYPE}=="disk", IMPORT{program}="udisks-probe-ata-smart $tempnode"

# ATA disks connected via SAS (not driven by libata)
KERNEL=="sd*[!0-9]", ATTR{removable}=="0", ENV{ID_BUS}=="scsi", 
ENV{DEVTYPE}=="disk", ENV{ID_VENDOR}=="ATA", 
IMPORT{program}="udisks-probe-ata-smart $tempnode"


# Example rule for tagging a device with a specific media type. Where and
# how to store this database needs some thought.
#
SUBSYSTEMS=="usb", ATTRS{idVendor}=="050d", ATTRS{idProduct}=="0248", 
ENV{ID_INSTANCE}=="0:0", ENV{ID_DRIVE_FLASH_CF}="1"
SUBSYSTEMS=="usb", ATTRS{idVendor}=="050d", ATTRS{idProduct}=="0248", 
ENV{ID_INSTANCE}=="0:1", ENV{ID_DRIVE_FLASH_MS}="1"
SUBSYSTEMS=="usb", ATTRS{idVendor}=="050d", ATTRS{idProduct}=="0248", 
ENV{ID_INSTANCE}=="0:2", ENV{ID_DRIVE_FLASH_SM}="1"
SUBSYSTEMS=="usb", ATTRS{idVendor}=="050d", ATTRS{idProduct}=="0248", 
ENV{ID_INSTANCE}=="0:3", ENV{ID_DRIVE_FLASH_SD}="1"

SUBSYSTEMS=="usb", ATTRS{idVendor}=="05e3", ATTRS{idProduct}=="070e", 
ENV{ID_INSTANCE}=="0:0", ENV{ID_DRIVE_FLASH_CF}="1"
SUBSYSTEMS=="usb", ATTRS{idVendor}=="05e3", ATTRS{idProduct}=="070e", 
ENV{ID_INSTANCE}=="0:1", ENV{ID_DRIVE_FLASH_SM}="1"
SUBSYSTEMS=="usb", ATTRS{idVendor}=="05e3", ATTRS{idProduct}=="070e", 
ENV{ID_INSTANCE}=="0:2", ENV{ID_DRIVE_FLASH_SD}="1"
SUBSYSTEMS=="usb", ATTRS{idVendor}=="05e3", ATTRS{idProduct}=="070e", 
ENV{ID_INSTANCE}=="0:3", ENV{ID_DRIVE_FLASH_MS}="1"

# APPLE SD Card Reader (MacbookPro5,4)
#
SUBSYSTEMS=="usb", ATTRS{idVendor}=="05ac", ATTRS{idProduct}=="8403", 
ENV{ID_DRIVE_FLASH_SD}="1"

# Realtek card readers
DRIVERS=="rts_pstor", ENV{ID_DRIVE_FLASH_SD}="1"

# Common theme
#
SUBSYSTEMS=="usb", ENV{ID_MODEL}=="*SD_Reader*", ENV{ID_DRIVE_FLASH_SD}="1"
SUBSYSTEMS=="usb", ENV{ID_MODEL}=="*Reader*SD*", ENV{ID_DRIVE_FLASH_SD}="1"
SUBSYSTEMS=="usb", ENV{ID_MODEL}=="*CF_Reader*", ENV{ID_DRIVE_FLASH_CF}="1"
SUBSYSTEMS=="usb", ENV{ID_MODEL}=="*SM_Reader*", ENV{ID_DRIVE_FLASH_SM}="1"
SUBSYSTEMS=="usb", ENV{ID_MODEL}=="*MS_Reader*", ENV{ID_DRIVE_FLASH_MS}="1"

############################################################################################################## 


# If previous rules did not set an icon, provide a default one for media 
players

ENV{UDISKS_PRESENTATION_ICON_NAME}=="?*", GOTO="udisks_media_player_end"

ENV{ID_MEDIA_PLAYER}=="?*", 
ENV{UDISKS_PRESENTATION_ICON_NAME}="multimedia-player"
ENV{ID_MEDIA_PLAYER}=="apple-ipod", 
ENV{UDISKS_PRESENTATION_ICON_NAME}="multimedia-player-ipod"

# Apple iPod Video
#
SUBSYSTEMS=="usb", ATTRS{idVendor}=="05ac", ATTRS{idProduct}=="1209", 
ENV{UDISKS_PRESENTATION_ICON_NAME}="multimedia-player-ipod-white"

LABEL="udisks_media_player_end"

############################################################################################################## 


# PC floppy drives
#
KERNEL=="fd*", ENV{ID_DRIVE_FLOPPY}="1"

# USB floppy drives
#
SUBSYSTEMS=="usb", ATTRS{bInterfaceClass}=="08", 
ATTRS{bInterfaceSubClass}=="04", ENV{ID_DRIVE_FLOPPY}="1"

# ATA Zip drives
#
ENV{ID_VENDOR}=="*IOMEGA*", ENV{ID_MODEL}=="*ZIP*", 
ENV{ID_DRIVE_FLOPPY_ZIP}="1"

############################################################################################################## 


# Partitions which desktops should not display
#

# Apple Bootstrap partitions
ENV{UDISKS_PARTITION_SCHEME}=="apm", 
ENV{UDISKS_PARTITION_TYPE}=="Apple_Bootstrap", 
ENV{UDISKS_PRESENTATION_HIDE}="1"

# special MBR partition types (EFI, hidden, etc.)
# see http://www.win.tue.nl/~aeb/partitions/partition_types-1.html
ENV{UDISKS_PARTITION_SCHEME}=="mbr", \
ENV{UDISKS_PARTITION_TYPE}=="0x00|0x11|0x12|0x14|0x16|0x17|0x1b|0x1c|0x1e|0x27|0x3d|0x84|0x8d|0x90|0x91|0x92|0x93|0x97|0x98|0x9a|0x9b|0xbb|0xc2|0xc3|0xdd|0xef", 
\
   ENV{UDISKS_PRESENTATION_HIDE}="1"

# special GUID-identified partition types
# see 
http://en.wikipedia.org/wiki/GUID_Partition_Table#Partition_type_GUIDs
ENV{UDISKS_PARTITION_SCHEME}=="gpt", \
ENV{UDISKS_PARTITION_TYPE}=="C12A7328-F81F-11D2-BA4B-00A0C93EC93B|21686148-6449-6E6F-744E-656564454649", 
\
   ENV{UDISKS_PRESENTATION_HIDE}="1"

# APM recovery/tool partitions which are useless on Linux
ENV{UDISKS_PARTITION_SCHEME}=="apm", \
   ENV{ID_CDROM}=="?*", ENV{ID_FS_TYPE}=="udf", 
ENV{ID_FS_LABEL}=="WD_SmartWare", \
   ENV{UDISKS_PRESENTATION_HIDE}="1"

# recovery partitions (taken from old hal rules)
ENV{ID_FS_TYPE}=="ntfs|vfat", \
   ENV{ID_FS_LABEL}=="RECOVERY|HP_RECOVERY|Recovery 
Partition|DellUtility|DellRestore|IBM_SERVICE|SERVICEV001|SERVICEV002|SYSTEM 
RESERVED", \
   ENV{UDISKS_PRESENTATION_HIDE}="1"

# read-only non-Linux software installer partitions
ENV{ID_VENDOR}=="Sony", ENV{ID_MODEL}=="PRS*Launcher", 
ENV{UDISKS_PRESENTATION_HIDE}="1"

############################################################################################################## 



LABEL="udisks_end"