Hi Teh,

 we had some similar error: 
all FS on the system HD were set to read-only due to SCSI error, HA was still 
alive, but no action possible - no logs etc. due to read-only ...
Only possibility was to turn the server off and on.
In this situation is also Stonith unusable ;-)



Best regards 

Nikita Michalko


Am Montag, 13. Oktober 2008 04:31 schrieb Teh Tze Siong:
> I have been playing with HA+DRBD on 2 servers and each with one hard disk
> installed. The server is hosting the database for other application
> servers.
>
>
>
> Recently the application has failed and problem lies in the database
> server, the primary node. I've checked the server, network still up, I
> still can read the files and access to database but I cannot update
> anything and not even allowed to run a "shutdown -h now" or turn off the
> network interface - The file system has become read-only mode and heartbeat
> is still alive. I have no choice but to request the datacenter guy to
> unplug the network cables at the primary node, wait until I confirmed
> secondary node has taken over, then only power down the primary node.
>
>
>
> HA+DRBD works well for network failure or power failure on primary node but
> when it comes to this "half-dead" situation, it is driving me crazy.
>
>
>
> As the server is installed in remote datacenter, is there a better way for
> me to counter act this "half-dead" situation?
>
>
>
>
>
> Thanks,
>
> Zev
>
>
>
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