Now a days i have mostly dealing with oracle VM for SPARC on T-4 servers.(LDOM). As we all know that hardware console can be writable for only one user at a time and if you take the second session , it will automatically connect in read only mode unless you use the force option. The same way oracle VM for SPARC console also behaves even though its a virtual consoles on the hypervisor levels.
Sometimes , the first console session may terminate unexpectedly due to network issues and if you try take the console for second time ,you may get error that “You do not have write access” on the console screen.
root@sun5#ldm list-domain NAME STATE FLAGS CONS VCPU MEMORY UTIL UPTIME primary active -n-cv- SP 8 2G 0.3% 2h 34m ua1 active -n---- 1 12 3G 0.1% 1h 37m ua2 active -n---- 2 12 2560M 0.1% 1h 37m root@sun5# root@sun5#telnet 127.0.0.1 1 Trying 127.0.0.1... Connected to 127.0.0.1. Escape character is '^]'. Connecting to console "ua1" in group "ua1" .... Press ~? for control options .. You do not have write access You do not have write access You do not have write access You do not have write access You do not have write access You do not have write access You do not have write access You do not have write access You do not have write access telnet> quit Connection to 127.0.0.1 closed.
To fix this issue, login to the control domain and list the telnet session.
root@sun5#ps -ef |grep telnet
root 6259 6118 0 12:07:22 pts/4 0:00 telnet 127.0.0.1 1
root 6035 374 0 12:01:21 ? 0:00 /usr/sbin/in.telnetd
root 1645 374 0 09:47:55 ? 0:00 /usr/sbin/in.telnetd
root 5867 374 0 11:57:25 ? 0:00 /usr/sbin/in.telnetd
root 6004 5870 0 12:00:49 pts/1 0:00 telnet localhost 2
root 6262 6038 0 12:07:46 pts/2 0:00 grep telnet
Kill the process which is associated to the guest domain. In this case , i am having issue with “ua1” guest domain which has the console port-1.Let me terminate the process of that and try to connect the console again.
root@sun5#kill -9 6259 root@sun5#telnet 127.0.0.1 1 Trying 127.0.0.1... Connected to 127.0.0.1. Escape character is '^]'. Connecting to console "ua1" in group "ua1" .... Press ~? for control options .. ua1 console login: root Password: Mar 24 13:44:13 ua1 login: ROOT LOGIN /dev/console Last login: Mon Mar 24 13:16:41 from 192.168.0.117 Oracle Corporation SunOS 5.11 11.1 September 2012 root@ua1:~# logout ua1 console login: telnet> quit Connection to 127.0.0.1 closed. root@sun5#
Awesome .We have fixed the issue .This is small trick but you need to remember this when you face this kind of issues while connecting the console.
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