It doesn't matter if it's an LV or a file.  ADSM is an
application which uses AIX APIs to access data.  It uses
the same APIs whether data is maintained in a LV or a file.
AIX 4.1.5 does not have APIs to allow access to more than
2GB of data in either a file or a LV.
 In summary,
   You must have ADSM 2.1.5.13 and AIX 4.2 to use either
LVs or files greater than 2GB.

Barry Fruchtman
ADSM Development


On Wed, 20 Aug 1997, Barry Fruchtman wrote:

> At 07:59 PM 8/15/97 -0400, you wrote:
> >  With Level 13 of the 2.1.5 server on AIX 4.2,
> >the 2GB limit per volume is lifted.  Even though AIX 4.1.5 allows
> >filesystems to surpass 2 GB, it does not allow files
> >to be larger than 2 GB;  The APIs do not support
> >the 64-bit access that became part of AIX 4.2. It
> >doesn't matter if it's an LV or a JFS file.  Without
> >the API support, it's no dice.
> >
> >Barry Fruchtman
> >ADSM Development
> >
> Barry,
> Can you please clarify a few things for me on this issue? I am currently
> running ptf13 level of 2.1.0 server code on AIX 4.1.5. Because we are
> getting 4.5gb SSA drives to use for storage pool volumes, I would like to
> be able to define 4.5gb drive as a 4.5gb storage pool volume. Now I realize
> that in AIX 4.1.5 the maximum file size under JFS is still 2gb. However,
> that is not the subject of contention. I am trying to define the storage
> pool volume using AIX raw logical volume, eg /dev/rlogvol1, which, in my
> limited knowledge of AIX, should bypass the 2gb filesize limitation of JFS.
> Why then is ADSM having a problem supporting LVs greater than 2gb?
> Your note only referred to the 2.1.5 version. Was that just an oversight or
> do I really have to convert to the 2.1.5 version? As for the APIs, we are
> using SQL-BackTrack from Datatools. Is that then going to prevent us from
> going to storage volumes > 2gb?
> Thanks in advance.
>
> Have a nice day or whatever's left of it.
>
> David Ong
> National Semiconductor Corp.
>