[PLUG] vinum size on disk

[Mark McConnell]

I'm sorry about the long lines.  Something went wrong.

On 8 Apr 2002 at 14:26, Mark McConnell wrote:

> 
> Since February, I've been experimenting with FreeBSD's volume manager,
> called vinum.  http://www.vinumvm.org/ 
> 
> When I create files on this volume, and share it to a Samba network,
> I've found that Windows 2000 reports a very large discrepency between
> the size of the file and the size on the disk. 
> 
> For example:
> Size:                          273 KB (280,542 bytes)
> Size on disk:               8.00 MB (8,388,608 bytes)
> 
> I don't know where that "8.00 MB" comes from.  I can't find a similar
> number looking at the same file from the localhost. 
> 
> I've created several different configurations.  And, I've observed the
> same issue under each type of organization. The figures above are what
> I see when reading a file on a 375GB RAID5 volume, constructed from
> four 115 GB  IDE drives, on a Promise Ultra100 TX2 card,  mounted for
> sharing on a Samba network.  Currently Running FreeBSD 4.4-STABLE 
> 
> Windows 2000 does not have similar problems when reading Samba shares
> to normal volumes. 
> 
> What am I looking at?  Is this a problem with Windows 2000?  Have I
> set up my vinum volume incorrectly? 
> 
> Below are my file system preferences.  Have I mis-set something? 
> 
> tunefs: soft updates:  (-n)                                enabled
> tunefs: maximum contiguous block count: (-a)               15
> tunefs: rotational delay between contiguous blocks: (-d)   0 ms
> tunefs: maximum blocks per file in a cylinder group: (-e)  2048
> tunefs: average file size: (-f)                            16384
> tunefs: average number of files in a directory: (-s)       64
> tunefs: minimum percentage of free space: (-m)             8%
> tunefs: optimization preference: (-o)                      time
> 
> Can I safely ignore this?
> 
> Mark McConnell
> --