Displaying 2 results from an estimated 2 matches for "desntiat".
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dentist
2018 Apr 11
0
Re: [Qemu-block] v2v: -o rhv-upload: Long time spent zeroing the disk
...t; So it's possible but not trivial.
>
I think this should be fixed in qemu-img. The current zero optimization may
have insignificant improvement when the backend supports fast zeroing
(e.g fallocate, blkzeroout) by minimizing number of syscalls, but it has
severe
performance issue when the desntiation does not support fast zero
(e.g. NFS < 4.2).
We plan to improve zero performance in 4.2.z, but this will not solve the
issue
on NFS < 4.2.
By the way I think we're slowly reimplementing NBD in the imageio API.
>
You can also look at it as - slowly showing that HTTP can replace
NB...
2018 Apr 10
2
Re: [Qemu-block] v2v: -o rhv-upload: Long time spent zeroing the disk
On Tue, Apr 10, 2018 at 03:25:47PM +0000, Nir Soffer wrote:
> On Tue, Apr 10, 2018 at 5:50 PM Richard W.M. Jones <rjones@redhat.com>
> wrote:
>
> > On Tue, Apr 10, 2018 at 02:07:33PM +0000, Nir Soffer wrote:
> > > This makes sense if the device is backed by a block device on oVirt side,
> > > and the NBD support efficient zeroing. But in this case the device