Re: [Qemu-devel] Re: [ANNOUNCE] Sheepdog: Distributed Storage System for KVM

2009-10-25 Thread Tomasz Chmielewski
Dietmar Maurer wrote: Also, on _loaded_ systems, I noticed creating/removing logical volumes can take really long (several minutes); where allocating a file of a given size would just take a fraction of that. Allocating a file takes much longer, unless you use a 'sparse' file. If you mean "a

RE: [Qemu-devel] Re: [ANNOUNCE] Sheepdog: Distributed Storage System for KVM

2009-10-25 Thread Dietmar Maurer
> Also, on _loaded_ systems, I noticed creating/removing logical volumes > can take really long (several minutes); where allocating a file of a > given size would just take a fraction of that. Allocating a file takes much longer, unless you use a 'sparse' file. - Dietmar -- To unsubscribe from

Re: [Qemu-devel] Re: [ANNOUNCE] Sheepdog: Distributed Storage System for KVM

2009-10-23 Thread Tomasz Chmielewski
Chris Webb wrote: Javier Guerra writes: i'd just want to add my '+1 votes' on both getting rid of JVM dependency and using block devices (usually LVM) instead of ext3/btrfs If the chunks into which the virtual drives are split are quite small (say the 64MB used by Hadoop), LVM may be a less

Re: [Qemu-devel] Re: [ANNOUNCE] Sheepdog: Distributed Storage System for KVM

2009-10-23 Thread MORITA Kazutaka
On Fri, Oct 23, 2009 at 8:10 PM, Alexander Graf wrote: > > On 23.10.2009, at 12:41, MORITA Kazutaka wrote: > > On Fri, Oct 23, 2009 at 12:30 AM, Avi Kivity wrote: > > How is load balancing implemented?  Can you move an image transparently > > while a guest is running?  Will an image be moved clos

Re: [Qemu-devel] Re: [ANNOUNCE] Sheepdog: Distributed Storage System for KVM

2009-10-23 Thread Javier Guerra
On Fri, Oct 23, 2009 at 9:58 AM, Chris Webb wrote: > If the chunks into which the virtual drives are split are quite small (say > the 64MB used by Hadoop), LVM may be a less appropriate choice. It doesn't > support very large numbers of very small logical volumes very well. absolutely. the 'nice

Re: [Qemu-devel] Re: [ANNOUNCE] Sheepdog: Distributed Storage System for KVM

2009-10-23 Thread Chris Webb
Javier Guerra writes: > i'd just want to add my '+1 votes' on both getting rid of JVM > dependency and using block devices (usually LVM) instead of ext3/btrfs If the chunks into which the virtual drives are split are quite small (say the 64MB used by Hadoop), LVM may be a less appropriate choice