On Wed, 05/07 11:06, Kevin Wolf wrote:
> Am 07.05.2014 um 10:57 hat Fam Zheng geschrieben:
> > On Wed, 05/07 10:20, Kevin Wolf wrote:
> > > Am 07.05.2014 um 03:45 hat Fam Zheng geschrieben:
> > > > On Tue, 05/06 10:32, Fam Zheng wrote:
> > > > > On mounted NFS filesystem, ftruncate is much much slo
Am 07.05.2014 um 10:57 hat Fam Zheng geschrieben:
> On Wed, 05/07 10:20, Kevin Wolf wrote:
> > Am 07.05.2014 um 03:45 hat Fam Zheng geschrieben:
> > > On Tue, 05/06 10:32, Fam Zheng wrote:
> > > > On mounted NFS filesystem, ftruncate is much much slower than doing a
> > > > zero write. Changing thi
On Wed, 05/07 10:20, Kevin Wolf wrote:
> Am 07.05.2014 um 03:45 hat Fam Zheng geschrieben:
> > On Tue, 05/06 10:32, Fam Zheng wrote:
> > > On mounted NFS filesystem, ftruncate is much much slower than doing a
> > > zero write. Changing this significantly speeds up cluster allocation.
> > >
> > > C
Am 07.05.2014 um 03:45 hat Fam Zheng geschrieben:
> On Tue, 05/06 10:32, Fam Zheng wrote:
> > On mounted NFS filesystem, ftruncate is much much slower than doing a
> > zero write. Changing this significantly speeds up cluster allocation.
> >
> > Comparing by converting a cirros image (296M) to VMD
On Wed, May 07, 2014 at 09:45:17AM +0800, Fam Zheng wrote:
> On Tue, 05/06 10:32, Fam Zheng wrote:
> > @@ -1110,12 +,20 @@ static int get_cluster_offset(BlockDriverState *bs,
> > }
> >
> > /* Avoid the L2 tables update for the images that have snapshots.
> > */
> > -
On Tue, 05/06 10:32, Fam Zheng wrote:
> On mounted NFS filesystem, ftruncate is much much slower than doing a
> zero write. Changing this significantly speeds up cluster allocation.
>
> Comparing by converting a cirros image (296M) to VMDK on an NFS mount
> point, over 1Gbe LAN:
>
> $ time qe
On mounted NFS filesystem, ftruncate is much much slower than doing a
zero write. Changing this significantly speeds up cluster allocation.
Comparing by converting a cirros image (296M) to VMDK on an NFS mount
point, over 1Gbe LAN:
$ time qemu-img convert cirros-0.3.1.img /mnt/a.raw -O vmdk
