1 # mdadm configuration file
3 # mdadm will function properly without the use of a configuration file,
4 # but this file is useful for keeping track of arrays and member disks.
5 # In general, a mdadm.conf file is created, and updated, after arrays
6 # are created. This is the opposite behavior of /etc/raidtab which is
7 # created prior to array construction.
10 # the config file takes two types of lines:
12 # DEVICE lines specify a list of devices of where to look for
13 # potential member disks
15 # ARRAY lines specify information about how to identify arrays so
16 # so that they can be activated
20 # You can have more than one device line and use wild cards. The first
21 # example includes SCSI the first partition of SCSI disks /dev/sdb,
22 # /dev/sdc, /dev/sdd, /dev/sdj, /dev/sdk, and /dev/sdl. The second
23 # line looks for array slices on IDE disks.
25 #DEVICE /dev/sd[bcdjkl]1
26 #DEVICE /dev/hda1 /dev/hdb1
28 # The designation "partitions" will scan all partitions found in
33 # ARRAY lines specify an array to assemble and a method of identification.
34 # Arrays can currently be identified by using a UUID, superblock minor number,
35 # or a listing of devices.
37 # super-minor is usually the minor number of the metadevice
38 # UUID is the Universally Unique Identifier for the array
39 # Each can be obtained using
43 # To capture the UUIDs for all your RAID arrays to this file, run these:
44 # to get a list of running arrays:
45 # # mdadm -D --scan >>/etc/mdadm.conf
46 # to get a list from superblocks:
47 # # mdadm -E --scan >>/etc/mdadm.conf
49 #ARRAY /dev/md0 UUID=3aaa0122:29827cfa:5331ad66:ca767371
50 #ARRAY /dev/md1 super-minor=1
51 #ARRAY /dev/md2 devices=/dev/hda1,/dev/hdb1
53 # ARRAY lines can also specify a "spare-group" for each array. mdadm --monitor
54 # will then move a spare between arrays in a spare-group if one array has a
55 # failed drive but no spare
56 #ARRAY /dev/md4 uuid=b23f3c6d:aec43a9f:fd65db85:369432df spare-group=group1
57 #ARRAY /dev/md5 uuid=19464854:03f71b1b:e0df2edd:246cc977 spare-group=group1
61 # When used in --follow (aka --monitor) mode, mdadm needs a
62 # mail address and/or a program. To start mdadm's monitor mode, add
63 # "mdadm" to your DAEMONS array in /etc/rc.conf
65 # If the lines are not found, mdadm will exit quietly
66 #MAILADDR root@mydomain.tld
67 #PROGRAM /usr/sbin/handle-mdadm-events