Re: To start multiple KVM guests from one qcow2 image with transient disk option

2021-01-17 Thread Masayoshi Mizuma
On Fri, Jan 15, 2021 at 01:49:54PM +0100, Peter Krempa wrote: > On Thu, Jan 07, 2021 at 16:32:59 -0500, Masayoshi Mizuma wrote: > > On Thu, Jan 07, 2021 at 09:05:42AM +0100, Peter Krempa wrote: > > > On Tue, Jan 05, 2021 at 15:12:55 +0100, Peter Krempa wrote: > > > > On Mon, Jan 04, 2021 at

Re: To start multiple KVM guests from one qcow2 image with transient disk option

2021-01-15 Thread Peter Krempa
On Thu, Jan 07, 2021 at 16:32:59 -0500, Masayoshi Mizuma wrote: > On Thu, Jan 07, 2021 at 09:05:42AM +0100, Peter Krempa wrote: > > On Tue, Jan 05, 2021 at 15:12:55 +0100, Peter Krempa wrote: > > > On Mon, Jan 04, 2021 at 15:30:19 -0500, Masayoshi Mizuma wrote: > > > > On Sat, Dec 19, 2020 at

Re: To start multiple KVM guests from one qcow2 image with transient disk option

2021-01-07 Thread Masayoshi Mizuma
On Thu, Jan 07, 2021 at 09:05:42AM +0100, Peter Krempa wrote: > On Tue, Jan 05, 2021 at 15:12:55 +0100, Peter Krempa wrote: > > On Mon, Jan 04, 2021 at 15:30:19 -0500, Masayoshi Mizuma wrote: > > > On Sat, Dec 19, 2020 at 11:30:39PM -0500, Masayoshi Mizuma wrote: > > [...] > > >

Re: To start multiple KVM guests from one qcow2 image with transient disk option

2021-01-07 Thread Peter Krempa
On Tue, Jan 05, 2021 at 15:12:55 +0100, Peter Krempa wrote: > On Mon, Jan 04, 2021 at 15:30:19 -0500, Masayoshi Mizuma wrote: > > On Sat, Dec 19, 2020 at 11:30:39PM -0500, Masayoshi Mizuma wrote: [...] > {"execute":"cont"} > > So that is a no-go. Some disk bus-es such as IDE don't support

Re: To start multiple KVM guests from one qcow2 image with transient disk option

2021-01-05 Thread Peter Krempa
On Mon, Jan 04, 2021 at 15:30:19 -0500, Masayoshi Mizuma wrote: > On Sat, Dec 19, 2020 at 11:30:39PM -0500, Masayoshi Mizuma wrote: [...] > I think following qemu command line options and QMP commands work for sharing > the qcow2 disks. The following uses disk hotplug instead of snapshot

Re: To start multiple KVM guests from one qcow2 image with transient disk option

2021-01-04 Thread Masayoshi Mizuma
On Sat, Dec 19, 2020 at 11:30:39PM -0500, Masayoshi Mizuma wrote: > On Thu, Dec 17, 2020 at 10:39:36AM +0100, Peter Krempa wrote: > > On Mon, Dec 14, 2020 at 22:49:03 -0500, Masayoshi Mizuma wrote: > > > On Sat, Dec 12, 2020 at 11:57:15AM +0100, Peter Krempa wrote: > > > > On Fri, Dec 11, 2020 at

Re: To start multiple KVM guests from one qcow2 image with transient disk option

2020-12-19 Thread Masayoshi Mizuma
On Thu, Dec 17, 2020 at 10:39:36AM +0100, Peter Krempa wrote: > On Mon, Dec 14, 2020 at 22:49:03 -0500, Masayoshi Mizuma wrote: > > On Sat, Dec 12, 2020 at 11:57:15AM +0100, Peter Krempa wrote: > > > On Fri, Dec 11, 2020 at 20:58:48 -0500, Masayoshi Mizuma wrote: > > > > Hello, > > > > > > > > I

Re: To start multiple KVM guests from one qcow2 image with transient disk option

2020-12-17 Thread Peter Krempa
On Mon, Dec 14, 2020 at 22:49:03 -0500, Masayoshi Mizuma wrote: > On Sat, Dec 12, 2020 at 11:57:15AM +0100, Peter Krempa wrote: > > On Fri, Dec 11, 2020 at 20:58:48 -0500, Masayoshi Mizuma wrote: > > > Hello, > > > > > > I would like to start multiple KVM guests from one qcow2 image, and > > >

Re: To start multiple KVM guests from one qcow2 image with transient disk option

2020-12-14 Thread Masayoshi Mizuma
On Sat, Dec 12, 2020 at 11:57:15AM +0100, Peter Krempa wrote: > On Fri, Dec 11, 2020 at 20:58:48 -0500, Masayoshi Mizuma wrote: > > Hello, > > > > I would like to start multiple KVM guests from one qcow2 image, and > > discard the changes which the KVM guests done. > > > > transient disk option

Re: To start multiple KVM guests from one qcow2 image with transient disk option

2020-12-12 Thread Peter Krempa
On Fri, Dec 11, 2020 at 20:58:48 -0500, Masayoshi Mizuma wrote: > Hello, > > I would like to start multiple KVM guests from one qcow2 image, and > discard the changes which the KVM guests done. > > transient disk option is useful for discarding the changes, however, > we cannot start multiple

To start multiple KVM guests from one qcow2 image with transient disk option

2020-12-11 Thread Masayoshi Mizuma
Hello, I would like to start multiple KVM guests from one qcow2 image, and discard the changes which the KVM guests done. transient disk option is useful for discarding the changes, however, we cannot start multiple KVM guest from one qcow2 image because the image is write-locked by the first