Re: [Qemu-devel] Some question about savem/qcow2 incremental snapshot

2018-05-08 Thread Eric Blake
On 12/25/2017 01:33 AM, He Junyan wrote: hi all: I am now focusing on snapshot optimization for Intel NVDimm kind memory. Different from the normal memory, the NVDimm may be 128G, 256G or even more for just one guest, and its speed is slower than the normal memory. So sometimes it may take

Re: [Qemu-devel] Some question about savem/qcow2 incremental snapshot

2018-01-15 Thread He Junyan
On δΈ‰, 2018-01-10 at 20:17 +, Stefan Hajnoczi wrote: > On Wed, Jan 10, 2018 at 8:15 PM, Dr. David Alan Gilbert > wrote: > > > > * Stefan Hajnoczi (stefa...@gmail.com) wrote: > > > > > > On Tue, Jan 9, 2018 at 7:55 PM, Dr. David Alan Gilbert > > >

Re: [Qemu-devel] Some question about savem/qcow2 incremental snapshot

2018-01-10 Thread Stefan Hajnoczi
On Wed, Jan 10, 2018 at 8:15 PM, Dr. David Alan Gilbert wrote: > * Stefan Hajnoczi (stefa...@gmail.com) wrote: >> On Tue, Jan 9, 2018 at 7:55 PM, Dr. David Alan Gilbert >> wrote: >> >> Certain guest operations like rebooting or zeroing memory will defeat

Re: [Qemu-devel] Some question about savem/qcow2 incremental snapshot

2018-01-10 Thread Dr. David Alan Gilbert
* Stefan Hajnoczi (stefa...@gmail.com) wrote: > On Tue, Jan 9, 2018 at 7:55 PM, Dr. David Alan Gilbert > wrote: > >> Certain guest operations like rebooting or zeroing memory will defeat > >> the incremental guest RAM snapshot feature. It's worth thinking about > >> these

Re: [Qemu-devel] Some question about savem/qcow2 incremental snapshot

2018-01-10 Thread Stefan Hajnoczi
On Tue, Jan 9, 2018 at 7:55 PM, Dr. David Alan Gilbert wrote: >> Certain guest operations like rebooting or zeroing memory will defeat >> the incremental guest RAM snapshot feature. It's worth thinking about >> these cases to make sure this feature would be worth it in real

Re: [Qemu-devel] Some question about savem/qcow2 incremental snapshot

2018-01-09 Thread Dr. David Alan Gilbert
* Stefan Hajnoczi (stefa...@gmail.com) wrote: > On Mon, Dec 25, 2017 at 07:54:00AM +, He, Junyan wrote: > > I am now focusing on snapshot optimization for Intel NVDimm kind memory. > > Different from the normal memory, the NVDimm may be 128G, 256G or even more > > for just one guest, and its

Re: [Qemu-devel] Some question about savem/qcow2 incremental snapshot

2018-01-09 Thread Stefan Hajnoczi
On Mon, Dec 25, 2017 at 07:54:00AM +, He, Junyan wrote: > I am now focusing on snapshot optimization for Intel NVDimm kind memory. > Different from the normal memory, the NVDimm may be 128G, 256G or even more > for just one guest, and its speed is slower than the normal memory. So >

[Qemu-devel] Some question about savem/qcow2 incremental snapshot

2017-12-25 Thread He Junyan
hi all: I am now focusing on snapshot optimization for Intel NVDimm kind memory. Different from the normal memory, the NVDimm may be 128G, 256G or even more for just one guest, and its speed is slower than the normal memory. So sometimes it may take several minutes to complete just one snapshot

[Qemu-devel] Some question about savem/qcow2 incremental snapshot

2017-12-25 Thread He, Junyan
hi all: I am now focusing on snapshot optimization for Intel NVDimm kind memory. Different from the normal memory, the NVDimm may be 128G, 256G or even more for just one guest, and its speed is slower than the normal memory. So sometimes it may take several minutes to complete just one