Re: ntfs ubc_uiomove error

[christos%astron.com@localhost (Christos Zoulas)]

In article <20090824162524.GE6612%quartz.inf.phy.cam.ac.uk@localhost>,
Patrick Welche  <prlw1%cam.ac.uk@localhost> wrote:
>I just had
>
>  ubc_uiomove: error=22       (EINVAL)
>
>(basically uvm_io) after
>
>  vnconfig -z vnd0 rwd0e.cloop2
>  mount -t ntfs /dev/vnd0a /mnt
>  cp boot.sdi /tmp
>
>yet I can happily
>
>  cat boot.sdi > /tmp/foobar
>  diff /tmp/foobar boot.sdi
>
>How can this be? (amd64/current)
>

There is very little write support for ntfs. You can only overwrite existing
files if you don't exceed the current size IIRC. I think that the code should
be modified to not allow read/write mounts until this is fixed. If you really
want to write ntfs there is a fuse based ntfs filesystem written for linux
that should work.

christos