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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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