Re: xfs on Linux on S/390

[Steve Lord <lord@xxxxxxx>]

> 
> > there will almost certainly be something about the S/390 which will
> > need work - what is the normal page size? XFS is currently restricted
> > to a filesystem block size equal to the system page size.
> 
> Most VM devices have a bigger hw blocksize than 512 bytes, usually 4K, 
> so that will be already a problem for XFS.

You know, that does ring a bell somewhere, yes this could be an issue,
XFS has some metadata objects on disk which are 512 bytes long and are
accessed separately. Getting around this is an interesting exercise in
adding read/modify/write logic, or living with an incompatible on disk
format.

Steve

> 
> 
> -Andi