Re: [Ql-Users] Maximum size of a file

2020-04-23 Thread Wolfgang Lenerz via Ql-Users
Hi,


> Sorry for my english, i badly explained myself ...

No, it was I who misunderstood!

Theoretically, there are limits, in practice, you'll be more limited by
the disk size limitation itself than the directory size.

Wolfgang
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Re: [Ql-Users] Maximum size of a file

2020-04-23 Thread Norman Dunbar via Ql-Users
Regarding the internals of a QXL.WIN disk, I documented that at 
http://qdosmsq.dunbar-it.co.uk/doku.php?id=qdosmsq:fs:qlwa there's a 
table at the end with host file sizes and the resulting internal block size.


On 23/04/2020 14:29, Giorgio Garabello via Ql-Users wrote:

Sorry for my english, i badly explained myself ...
I wanted to understand if there are limits to creating files within a .win
file


The directory entry contains a file_length field, it is a 32 bit 
longword. This allows for files to be up to 2^^32 -1 bytes in size, in 
theory. It all depends if the internals of SMSQ etc deal in signed or 
unsigned numbers.


2^^32 - is big! 4,096 Mb or 4 Gb.


HTH

Cheers,
Norm.

--
Norman Dunbar
Dunbar IT Consultants Ltd

Registered address:
27a Lidget Hill
Pudsey
West Yorkshire
United Kingdom
LS28 7LG

Company Number: 05132767
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Re: [Ql-Users] Maximum size of a file

2020-04-23 Thread Giorgio Garabello via Ql-Users
Sorry for my english, i badly explained myself ...
I wanted to understand if there are limits to creating files within a .win
file

Giorgio

Il giorno gio 23 apr 2020 alle ore 15:10 Wolfgang Lenerz via Ql-Users <
ql-users@lists.q-v-d.com> ha scritto:

> Hi,
>
> I have used a 1GiB file w/o problems.
>
> I may be wrong, but I dimly remember somebody telling me they use a 2
> GiB long QXL.Win container.
>
> The fact to be aware of is that these containers can always, at the
> most, deals with 65536 clusters, as the number of clusters (called
> groups in SMSQE speak) occupies a word. That means that, for a 2GB
> "disk", each cluster would occupy 64 sectors = 32KiB. Seems quite a
> waste in view of the generally limited size of QL files...
>
>
> HTH
>
> Wolfgang
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>
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Re: [Ql-Users] Maximum size of a file

2020-04-23 Thread Wolfgang Lenerz via Ql-Users
Hi,

I have used a 1GiB file w/o problems.

I may be wrong, but I dimly remember somebody telling me they use a 2
GiB long QXL.Win container.

The fact to be aware of is that these containers can always, at the
most, deals with 65536 clusters, as the number of clusters (called
groups in SMSQE speak) occupies a word. That means that, for a 2GB
"disk", each cluster would occupy 64 sectors = 32KiB. Seems quite a
waste in view of the generally limited size of QL files...


HTH

Wolfgang
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Re: [Ql-Users] Maximum size of a file

2020-04-23 Thread simon629--- via Ql-Users
 

On Thursday, 23 April 2020, 12:25:04 BST, Giorgio Garabello via Ql-Users 
 wrote:  
 
  Maximum size of a file
What is the maximum file size allowed on a .win disk?

Regards

Giorgio
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[Ql-Users] Maximum size of a file

2020-04-23 Thread Giorgio Garabello via Ql-Users
 Maximum size of a file
What is the maximum file size allowed on a .win disk?

Regards

Giorgio
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