[EMAIL PROTECTED] wrote:

> We have installed a mysql database on our our server.  The data and log
> files are stored on an external SCSI disk array which is connected to
> our server using FC cable connected to SCSI port. The mysql process is
> running on the local machine but the data and logs are stored on the
> disk array.
> =20
> When there is an accidental communication breakdown between disk array
> and server on which mysql process is running (e.g, pulling out FC
> cable), this is being detected by our scripts and then we are trying to
> shutdown the mysql process by using mysqladmin shutdown option.  However
> this command hangs and does not complete. =20

What is the kind of the communication breakdown: a temporary one or the array
goes offline forever?

In the later case MySQL will hang until disk is available to flush data. You
can killall -9 mysqld then but it's brute force. 

In the first case there is no need to restart MySQL (and theoreticly it should
flush and shutdown with no problems).





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