[Info-vax] Request description of UFS for VMS person

[Jan-Erik Söderholm]

JF Mezei wrote:
> Bob Eager wrote:
> 
>> Neither. Nothing happens on the disk. The file system support in the 
>> kernel merely records i-numbers and 'file systems' for all 'mount 
>> points'.
> 
> Interesting. So whenever anyone accesses a directory, this triggers an
> in-memory search of the list of mount points to see if there is a match?

Not *that* different from when VMS first checkes if your supplied
device in an file-specification actualy is an logical name (or not).
It's also a lookup done on every access. I'm sure that both
Unix and VMS does this in the most efficent way.


> 
> Do systems with heavy activity tend to mount disks with the most
> activity first to reduce average search time ? or does the in-kernel
> structures gets sorted in some way, and the order in whic you mount them
> becomes irrelevant ?