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SubjectRe: btrfs: compression breaks cp and cross-FS mv, FS_IOC_FIEMAP bug?
On Sun, Feb 13, 2011 at 06:07:36PM +0200, Marti Raudsepp wrote:
> On Sun, Feb 13, 2011 at 17:57, Josef Bacik <josef@redhat.com> wrote:
> > Does the same problem happen when you use cp --sparse=never?
>
> You are right. cp --sparse=never does not cause data loss.
>

So fiemap probably isn't doing the right thing when compression is enabled,
which doesn't suprise me since we don't do the right thing with delalloc either.
I will try and get to this soon. Thanks,

Josef


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