Mount same ext3 filesystem in 2 places... at the same time

[James Knott]

Anton Verevkin wrote:
> Really bad things happen when a filesystem is mounted from two computers at a time (with SCSI bus, Fibre
> Channel or other methods that allow access to the same physical disk from several machines). In this case
> computers can not even guess that thay are not exclusive users of this filesystem and can corrupt it if both 
> mounts are read-write.
>   

I haven't worked with SCSI or fibre channel gear, but many years ago, I
used to work on mini computers, which could share drives.  On those
systems, there was an interlock in the disk interface that prevented
both computers from writing at the same time.

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