[Info-vax] VAX Macro to C conversion

[Jan-Erik Söderholm]

Den 2019-06-24 kl. 16:40, skrev Michael Moroney:
> =?UTF-8?Q?Jan-Erik_S=c3=b6derholm?= <jan-erik.soderholm at telia.com> writes:
> 
>> Den 2019-06-24 kl. 15:59, skrev Michael Moroney:
>>> Simon Clubley <clubley at remove_me.eisner.decus.org-Earth.UFP> writes:
>>>
>>>> How much work would be involved in a rewrite of the shadowing code in C ?
>>>
>>> $ dir/size/grand xf72_resd$:[shadowing*.src]*.mar;
>>>
>>> Grand total of 12 directories, 55 files, 9878 blocks.
>>> $
>>>
> 
>> And how many "Records searched:" from:
> 
>> $ sea/stat/win=0 xf72_resd$:[shadowing*.src]*.mar; qwertyasdfgh
> 
>> ?
> 
> $ sea/stat/win=0 xf72_resd$:[shadowing*.src]*.mar; qwertyasdfgh
> 
> Files searched:                55       Buffered I/O count:       217
> Records searched:          159718       Direct I/O count:         130
> Characters searched:      4639981       Page faults:               24
> Records matched:                0       Elapsed CPU time:  0 00:00:00.45
> Lines printed:                  0       Elapsed time:      0 00:00:00.97
> %SEARCH-I-NOMATCHES, no strings matched
> $
> 
> 
>> So the new file system will not support shadowing from the start?
> 
> The new file system will support disks > 2TB.  Shadowing doesn't, and cannot
> without a lot of work.
> 

Ah OK. Well, most environments today may have their storage on some large
SAN and in that case shadowing might not be as beneficial as when you are
having separate disks.