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cf - controls the takeover and giveback operations of the
filers in a cluster
cf [ disable | enable | forcegiveback | forcetakeover
giveback [ -f ] | partner | status | takeover ]
The cf command controls the cluster failover monitor, which
determine when takeover and giveback operations take place
within a cluster.
The cf command is available only if your filer has the cluster
license.
- disable
- Disables the takeover capability of both
filers in the cluster.
- enable
- Enables the takeover capability of both
filers in the cluster.
- forcegiveback
- Forces the live filer to give back the
resources of the failed filer even
though the live filer detects an error
that would prevent a complete giveback.
For example, an error might prevent the
failed filer from flushing data in the
NVRAM to disk during a giveback. If the
live filer detects this error, it does
not perform a giveback. However, using
the forcegiveback option forces a giveback
despite such an error. When the
failed filer reboots as a result of a
forced giveback, it displays the following
message:
partner giveback incomplete, some data
may be lost
- forcetakeover
- Forces one filer to take over its
partner even though the filer detects an
error that would otherwise prevent a
takeover. For example, normally, if a
detached or faulty ServerNet cable
between the filers causes the filers'
NVRAM contents to be unsynchronized,
takeover is disabled. However, if you
enter the cf forcetakeover command, the
filer takes over its partner despite the
unsynchronized NVRAM contents. This
command might cause the filer being
taken over to lose client data.
- giveback [ -f ]
- Initiates a giveback of partner
resources. Once the giveback is complete,
the automatic takeover capability
is disabled until the partner is
rebooted. A giveback fails if there are
outstanding CIFS sessions or active system
dump processes. If you use the -f
option, the cf command terminates the
outstanding CIFS sessions and dump
processes before attempting a giveback.
- partner
- Displays the host name of the partner.
If the name is unknown, the cf command
displays ``partner.''
- status
- Displays the current status of the local
filer and the cluster.
- takeover
- lnitiates a takeover of the partner.
na_partner(1)
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