i get this error when zmcontrol start... and also on zmcontrol stop.

Unable to determine enabled services from ldap.
Enabled services read from cache. Service list may be inaccurate.
sh: /opt/zimbra/data/tmp/zmcontrol.out.TAGhG: Read-only file system
Starting logger...sh: /opt/zimbra/data/tmp/zmcontrol.out.TAGhG: Read-only file system
cat: /opt/zimbra/data/tmp/zmcontrol.out.TAGhG: No such file or directory
Failed.


Starting mailbox...sh: /opt/zimbra/data/tmp/zmcontrol.out.TAGhG: Read-only file system
cat: /opt/zimbra/data/tmp/zmcontrol.out.TAGhG: No such file or directory
Failed.


Starting antispam...sh: /opt/zimbra/data/tmp/zmcontrol.out.TAGhG: Read-only file system
cat: /opt/zimbra/data/tmp/zmcontrol.out.TAGhG: No such file or directory
Failed.


Starting antivirus...sh: /opt/zimbra/data/tmp/zmcontrol.out.TAGhG: Read-only file system
cat: /opt/zimbra/data/tmp/zmcontrol.out.TAGhG: No such file or directory
Failed.


Starting snmp...sh: /opt/zimbra/data/tmp/zmcontrol.out.TAGhG: Read-only file system
cat: /opt/zimbra/data/tmp/zmcontrol.out.TAGhG: No such file or directory
Failed.


Starting spell...sh: /opt/zimbra/data/tmp/zmcontrol.out.TAGhG: Read-only file system
cat: /opt/zimbra/data/tmp/zmcontrol.out.TAGhG: No such file or directory
Failed.


Starting mta...sh: /opt/zimbra/data/tmp/zmcontrol.out.TAGhG: Read-only file system
cat: /opt/zimbra/data/tmp/zmcontrol.out.TAGhG: No such file or directory
Failed.


Starting stats...sh: /opt/zimbra/data/tmp/zmcontrol.out.TAGhG: Read-only file system
cat: /opt/zimbra/data/tmp/zmcontrol.out.TAGhG: No such file or directory
Failed.



also this error on zimbra.log
line 203 in file /opt/zimbra/zimbramon/lib/Net/Server/PreForkSimple.pm
Mar 22 05:08:03 mail amavis[9745]: Net::Server: 2012/03/22-05:08:03 Server closing!
Mar 22 05:08:03 mail amavis[9745]: Net::Server: Couldn't unlink "/opt/zimbra/log/amavisd.pid" [Read-only file system]



what should i do ?