Re: [Qemu-devel] migration issue with qemu 2.10-rc2: QEMU command 'nbd-server-add': Block node is read-only

2017-08-14 Thread Fam Zheng
On Fri, 08/11 18:48, Kevin Wolf wrote: > The patch below implements what I was thinking of, and it seems to fix > this problem. However, you'll immediately run into the next one, which > is a message like 'Conflicts with use by ide0-hd0 as 'root', which does > not allow 'write' on #block172'. > >

Re: [Qemu-devel] migration issue with qemu 2.10-rc2: QEMU command 'nbd-server-add': Block node is read-only

2017-08-11 Thread Kevin Wolf
Am 11.08.2017 um 17:34 hat Christian Ehrhardt geschrieben: > On Fri, Aug 11, 2017 at 2:37 PM, Kevin Wolf wrote: > > > Am 11.08.2017 um 14:04 hat Fam Zheng geschrieben: > > > On Fri, 08/11 13:07, Christian Ehrhardt wrote: > > > > Simplifying that to a smaller test: > > > > > > >

Re: [Qemu-devel] migration issue with qemu 2.10-rc2: QEMU command 'nbd-server-add': Block node is read-only

2017-08-11 Thread Christian Ehrhardt
On Fri, Aug 11, 2017 at 2:37 PM, Kevin Wolf wrote: > Am 11.08.2017 um 14:04 hat Fam Zheng geschrieben: > > On Fri, 08/11 13:07, Christian Ehrhardt wrote: > > > Simplifying that to a smaller test: > > > > [...] > > > Block node is read-only > [...] > > > > This is actually

Re: [Qemu-devel] migration issue with qemu 2.10-rc2: QEMU command 'nbd-server-add': Block node is read-only

2017-08-11 Thread Kevin Wolf
Am 11.08.2017 um 14:04 hat Fam Zheng geschrieben: > On Fri, 08/11 13:07, Christian Ehrhardt wrote: > > Simplifying that to a smaller test: > > > > $ qemu-img create -f qcow2 /tmp/test.qcow2 100M > > $ qemu-system-x86_64 -S -m 512 -smp 1 -nodefaults --nographic -monitor > > stdio -drive > >

Re: [Qemu-devel] migration issue with qemu 2.10-rc2: QEMU command 'nbd-server-add': Block node is read-only

2017-08-11 Thread Fam Zheng
On Fri, 08/11 13:07, Christian Ehrhardt wrote: > Hi, > testing on 2.10-rc2 I ran into an issue around: > unable to execute QEMU command 'nbd-server-add': Block node is read-only > > ### TL;DR ### > - triggered by livbirt driven live migration with --copy-storage-all > - buils down to

[Qemu-devel] migration issue with qemu 2.10-rc2: QEMU command 'nbd-server-add': Block node is read-only

2017-08-11 Thread Christian Ehrhardt
Hi, testing on 2.10-rc2 I ran into an issue around: unable to execute QEMU command 'nbd-server-add': Block node is read-only ### TL;DR ### - triggered by livbirt driven live migration with --copy-storage-all - buils down to nbd_server_add failing - can be reproduced on a single system without