System Administration Commands                      sndrsyncd(1M)



NAME
     sndrsyncd - Availability Suite Remote Mirror  update  resyn-
     chronization daemon

SYNOPSIS
     /usr/lib/sndrsyncd


DESCRIPTION
     The  sndrsyncd  daemon  automates  update  resynchronization
     after a network or machine failure and invokes Point-in-Time
     Copy copies when needed to protect the  data  volumes  being
     updated during a resynchronization.


     The daemon is notified by the kernel  when  a  network  link
     being  used  by  Remote  Mirror  goes  down  and invokes the
     sndradm(1M) command with the -u option to resynchronize  all
     Remote  Mirror  sets which have autosync switched on and are
     using the network link. See sndradm(1M) for details  on  how
     to configure autosync for a Remote Mirror set.


     The daemon is also notified when any  Remote  Mirror  resyn-
     chronization  starts  or  completes. The daemon takes Point-
     in-Time Copy snapshots, if configured  in  the  Availability
     Suite  configuration file. On a secondary server, the daemon
     checks if a file system is currently mounted on  the  secon-
     dary  volume  and  informs  the kernel not to allow the syn-
     chronization to  start  if  the  file  system  is  currently
     mounted.

EXIT STATUS
     0            Daemon started successfully.


     >0           Daemon failed to start.


FILES
     /lib/svc/method/svc-rdcsyncd

         Shell script for starting sndrsyncd.


     /lib/svc/method/svc-rdc

         Shell script for stopping sndrsyncd.


ATRIBUTES




SunOS 5.11           Last change: 2 Oct 2007                    1






System Administration Commands                      sndrsyncd(1M)



     See attributes(5) for descriptions of the  following  attri-
     butes:



     
           ATRIBUTE TYPE               ATRIBUTE VALUE       
    
     Availability                 SUNWrdcr, SUNWrdcu          
    
     Interface Stability          Evolving                    
    


SEE ALSO
     iiadm(1M), sndradm(1M),  sndrd(1M),  svcadm(1M),  ds.log(4),
     rdc.cf(4), attributes(5)

NOTES
     Do not manually stop the sndrsyncd deamon. If  you  need  to
     manually stop sndrsyncd perform these steps. This stops both
     the sndrd and sndrsyncd daemons.

       # svcadm disable svc:/system/nwsrdc


       # svcadm disable svc:/system/nwsrdcsyncd



     Do not manually start or restart the  sndrsyncd  deamon.  If
     you  need  to  manually start sndrsyncd perform these steps.
     This starts both the sndrd and sndrsyncd daemons.

       # svcadm enable svc:/system/nwsrdc


       # svcadm enable svc:/system/nwsrdcsyncd



     See svcadm(1M) for additional information.













SunOS 5.11           Last change: 2 Oct 2007                    2