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Re: [linux-lvm] rc4 can't take snaphots of 0.9.1_beta7 lvs



On Tue, Oct 09, 2001 at 08:30:31PM +0100, Joe Thornber wrote:
> On Tue, Oct 09, 2001 at 12:30:36PM -0400, Chris Mason wrote:
> > 
> > 
> > On Tuesday, October 09, 2001 04:58:01 PM +0100 Joe Thornber
> > <thornber btconnect com> wrote:
> > > 
> > > Some of the betas misaligned the logical volumes.  If the volumes
> > > aren't page aligned the snapshot code (which uses kiovecs) cannot
> > > work.  You have this problem.  Fixing it isn't easy; you need to
> > > shuffle your extents up or down by the appropriate amount.  No one has
> > > written a program to do this as of yet.  Sorry.
> > > 
> > 
> > Well, it worked in beta7
> 
> did it ?  It may not have segfaulted, but did you check the data
> really carefully ?  After all it took a while for anyone to realise the
> problem existed.

Now I think about it maybe the change was made in order to allow LV's
to be used as raw devices.  In which case we are being harsh on you.
I'll talk to Heinz.

- Joe



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