NAME

       ocf_heartbeat_Raid1 - Manages Linux software RAID (MD) devices on shared storage

SYNOPSIS

       Raid1 [start | stop | status | monitor | meta-data | validate-all]

DESCRIPTION

       This resource agent manages Linux software RAID (MD) devices on a shared storage medium.
       It uses mdadm(8) to start, stop, and monitor the MD devices. Raidtools are supported, but
       deprecated. See https://raid.wiki.kernel.org/index.php/Linux_Raid for more information.

SUPPORTED PARAMETERS

       raidconf
           The RAID configuration file, e.g. /etc/mdadm.conf.

           (required, string, no default)

       raiddev
           One or more block devices to use, space separated. Alternatively, set to "auto" to
           manage all devices specified in raidconf.

           (required, string, no default)

       homehost
           The value for the homehost directive; this is an mdadm feature to protect RAIDs
           against being activated by accident. It is recommended to create RAIDs managed by the
           cluster with "homehost" set to a special value, so they are not accidentally
           auto-assembled by nodes not supposed to own them.

           (optional, string, no default)

       force_stop
           If processes or kernel threads are using the array, it cannot be stopped. We will try
           to stop processes, first by sending TERM and then, if that doesn't help in 3 seconds,
           using KILL. The lsof(8) program is required to get the list of array users. Of course,
           the kernel threads cannot be stopped this way. If the processes are critical for data
           integrity, then set this parameter to false. Note that in that case the stop operation
           will fail and the node will be fenced.

           (optional, boolean, default true)

       udev
           Wait until udevd creates a device in the start operation. On a normally loaded host
           this should happen quickly, but you may be unlucky. If you are not using udev set this
           to "no".

           (optional, boolean, default true)

       force_clones
           Activating the same md RAID array on multiple nodes at the same time will result in
           data corruption and thus is forbidden by default.

           A safe example could be an array that is only named identically across all nodes, but
           is in fact distinct.

           Only set this to "true" if you know what you are doing!

           (optional, boolean, default false)

SUPPORTED ACTIONS

       This resource agent supports the following actions (operations):

       start
           Starts the resource. Suggested minimum timeout: 20s.

       stop
           Stops the resource. Suggested minimum timeout: 20s.

       status
           Performs a status check. Suggested minimum timeout: 20s. Suggested interval: 10s.

       monitor
           Performs a detailed status check. Suggested minimum timeout: 20s. Suggested interval:
           10s.

       validate-all
           Performs a validation of the resource configuration. Suggested minimum timeout: 5s.

       meta-data
           Retrieves resource agent metadata (internal use only). Suggested minimum timeout: 5s.

EXAMPLE CRM SHELL

       The following is an example configuration for a Raid1 resource using the crm(8) shell:

           primitive p_Raid1 ocf:heartbeat:Raid1 \
             params \
               raidconf=string \
               raiddev=string \
             op monitor depth="0" timeout="20s" interval="10s"

EXAMPLE PCS

       The following is an example configuration for a Raid1 resource using pcs(8)

           pcs resource create p_Raid1 ocf:heartbeat:Raid1 \
             raidconf=string \
             raiddev=string \
             op monitor OCF_CHECK_LEVEL="0" timeout="20s" interval="10s"

SEE ALSO

       http://clusterlabs.org/

AUTHOR

       ClusterLabs contributors (see the resource agent source for information about individual
       authors)