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Diffstat (limited to 'mdadm.conf.5')
| -rw-r--r-- | mdadm.conf.5 | 58 |
1 files changed, 53 insertions, 5 deletions
diff --git a/mdadm.conf.5 b/mdadm.conf.5 index 59235bc..f8c0e34 100644 --- a/mdadm.conf.5 +++ b/mdadm.conf.5 @@ -6,17 +6,17 @@ mdadm.conf \- configuration for management of Software Raid with mdadm .SH DESCRIPTION .PP .B mdadm -is a tools for creating an managing RAID devices using the +is a tool for creating, managing, and monitoring RAID devices using the .B md driver in Linux. .PP Some common tasks, such as assembling all arrays, can be simplified -by describing the devices and array in this configuations file. +by describing the devices and array in this configuation file. .SS SYNTAX The file should be seen as a collection of words separated by white space (space, tab, or newline). -Any word that being with a hash sign (#) starts a comment and that +Any word that beings with a hash sign (#) starts a comment and that word together with the remainder of the line are ignored. Any line that start with white space (space or tab) is treated as @@ -45,10 +45,58 @@ and each device name can contain wild cards as defined by Also, there may be several device lines present in the file. +For example: +.IP +DEVICE /dev/hda* /dev/hdc* +.br +DEV /dev/sd* +.br +DEVICE /dev/discs/disc*/disc + .TP .B ARRAY +The ARRAY lines identify actual arrays. The second word on the line +should be the name of the device where the array is normally +assembled, such as +.BR /dev/md1 . +Subsequent words identify the array. If multiple identities are given, +then the array must match ALL identities to be considered a match. +Each identity word has a tag, and equals sign, and some value. +The options are: + +.RS 4 +.TP +.B uuid= +The value should be a 128 bit uuid in hexadecimal, with punctuation +interspersed if desired. This must match the uuid stored in the +superblock. +.TP +.B super-minor= +The value is an integer which indicates the minor number that was +stored in the superblock when the array was created. When an array is +created as /dev/mdX, then the minor number X is stored. +.TP +.B devices= +The value is a comma separated list of device names. Precisely these +devices will be used to assemble the array. Note that the devices +listed there must also be listed on a DEVICE line. +.TP +.B level= +The value is a raid level. This is not normally used to +identify an array, but is supported so that the output of + +.B "mdadm --examine --scan" + +can be use directly in the configuration file. +.TP +.B disks= +The value is the number of disks in a complete active array. As with +.B level= +this is mainly for compatibility with the output of +.BR "mdadm --examine --scan" . +.RE .SH SEE ALSO -mdadm (8), -md (4). +.BR mdadm (8), +.BR md (4). |