[Ocfs2-devel] [PATCH 13/15] ocfs2: ocfs2_group_bitmap_size has to handle old volume.
Wengang Wang
wen.gang.wang at oracle.com
Wed Mar 31 21:34:31 PDT 2010
On 10-04-01 12:22, Tao Ma wrote:
> Hi Joel,
>
> Joel Becker wrote:
> > On Thu, Apr 01, 2010 at 10:59:10AM +0800, Tao Ma wrote:
> >> ocfs2_group_bitmap_size has to handle the case when the
> >> volume don't have discontiguous block group support.
> >
> > NAK. We specify 256 in all cases. This doesn't hurt old code
> > because we've never used more bits. Even though our old bg_size values
> > were much larger, we never used that space because bg_bits was set to
> > the smaller value.
> No, it hurts.
Hi,
> So with an old ocfs2-tools and a new kernel, the new kernel will set it
> to 256 while the old ocfs2-tools refused to work by checking bg_size(see
> chainalloc_process_group in libocfs2).
Just for my info.
Is "old ocfs2-tools + new kernel" supported?
regards,
wengang.
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