Local zones do not start when rebooting gobal zone

HMy solaris host had been working well. Then all in a sudden, all local zones do not start automatically after I reboot the system. Did anybody see this before? Thanks.
[175 byte] By [vincentchenTX] at [2007-11-26 9:30:51]
# 1
Can anybody give me some idea? Has anybody seen this problem before? Thanks
vincentchenTX at 2007-7-7 0:15:23 > top of Java-index,Solaris Operating System,Solaris 10 Features...
# 2
Any errors in /var/adm/messages.What happens when you try to manually boot the zones.Since you said they were working before, I presume you have auto-boot set.
robertcohen at 2007-7-7 0:15:23 > top of Java-index,Solaris Operating System,Solaris 10 Features...
# 3

Thanks, Robert. There no error in /var/adm/messages. I can start zones manually.

I found the status of svc:/system/zones:default is offline. With this status, zones will not autoboot regardless of zones configuration. But I cannot enable the service. After I execute the following command

# svcadm enable svc:/system/zones:default

the status of that service is still offline. Any idea?

vincentchenTX at 2007-7-7 0:15:23 > top of Java-index,Solaris Operating System,Solaris 10 Features...
# 4
svcs -xv might give a clue.You can try looking in the logfile for the service.svcs -l zones will tell you the location of the log
robertcohen at 2007-7-7 0:15:23 > top of Java-index,Solaris Operating System,Solaris 10 Features...