Giveback operation mode

The giveback process is described in the following table.

Stage	Description
1	An operator issues a `cf giveback` command.
2	The takeover filer updates the failed filer disks.
3	The takeover filer destroys the emulated filer so that no more writes can occur to the failed filer disks.
4	The takeover filer releases the disk reservations that it held on behalf of the failed filer. This action returns control to the failed filer of the disks it owns.
5	The failed filer resumes normal operations, serving its own data. The users of that filer experience the effects of a reboot.

Note
Giveback occurs on the takeover filer and does not depend on the state of the failed filer.

During a typical giveback, the cluster monitor issues messages on the console of the takeover filer:

filer1(takeover)> Tue Jul 21 22:37:34 GMT [filer1 (takeover): 
cf.misc.operatorGiveback:info]: Cluster monitor: giveback initiated 
by operator

Tue Jul 21 22:37:34 GMT [filer1: cf.fm.givebackStarted:warning]: 
Cluster monitor: giveback started

Tue Jul 21 22:37:35 GMT [filer1: cf.fm.givebackComplete:warning]: 
Cluster monitor: giveback completed

The preceding message indicates that the giveback process was successful. When the failed filer reboots, the following messages appear:

Tue Jul 21 22:37:35 GMT [filer1: cf.fsm.stateTransit:warning]: 
Cluster monitor: TAKEOVER --> UP

Tue Jul 21 22:38:35 GMT [filer1: cf.fsm.firmwareStatus:info]: 
Cluster monitor: partner booting

Tue Jul 21 22:38:45 GMT [filer1: cf.fsm.firmwareStatus:info]: 
Cluster monitor: partner kernel loaded

Tue Jul 21 22:39:35 GMT [filer1: cf.fsm.partnerOk:notice]: Cluster 
monitor: partner ok

Tue Jul 21 22:39:35 GMT [filer1: cf.fsm.takeoverDisabled:notice]: 
Cluster monitor: takeover of partner disabled (unsynchronized log)

Tue Jul 21 22:39:41 GMT [filer1: cf.fsm.takeoverEnabled:notice]: 
Cluster monitor: takeover of partner enabled

Tue Jul 21 22:39:55 GMT [filer1: monitor.globalStatus.ok:info]: The 
system's global status is normal

The last message indicates that the filers are operating normally and, therefore, either filer can take over for its partner if necessary.