Re: [Qemu-discuss]  qcow2 performanceimprove 

2018-08-22 Thread yang.bin18
> > > > > If there is no backing file or snapshot you still need to fill > > > > > the cluster with zeroes, and that's going to be slower with > > > > > larger clusters. > > > > If not fill zeroes and only write guest data ,what`s wrong could > > > > happen ? > > > The following could happen

Re: [Qemu-discuss] Latest Qemu-COLO Segfaults

2018-08-22 Thread shuang-shuan,guo
Hi, Lukas, Yeah, this version does works fine together with the old instructions!!! Thanks very much for your help. Thanks shuang-shuan, guo -- Original -- From: "Lukas Straub"; Date: Thu, Aug 23, 2018 03:16 AM To: "shuang-shuan,guo"; Cc: "qemu-discuss"; S

[Qemu-discuss] Initialization order of nodes in device tree

2018-08-22 Thread Alexei Colin
Hi, what is the recommended way to control the initialization order of nodes in the device tree (that is, encode dependencies)? I am working with Xilinx fork of Qemu (circa v2.11), I didn't check yet if the device tree parsing logic changed in master. In the following text, visited != initialized

Re: [Qemu-discuss] Latest Qemu-COLO Segfaults

2018-08-22 Thread Lukas Straub
Hello, Well the "best" version of COLO (that I know of) is https://github.com/coloft/qemu/tree/colo-v5.1-developing-COLO-frame-v21-with-shared-disk together with the old Instructions (see https://wiki.qemu.org/index.php?title=Features/COLO&oldid=7150#Test_environment_prepare for an older Version o

[Qemu-discuss] How to change WM_CLASS(STRING) ?

2018-08-22 Thread Pierre Couderc
Currently WM_CLASS(STRING) is "qemu-system-x86_64". I would like to change it to "qemu-XP", "qemu-W10",etc... I success to chane -name qemu-XP but it doe not change the WM_CLASS... Thanks for any help.. PC

Re: [Qemu-discuss] One question about "drive-backup"

2018-08-22 Thread David Lee
Thank you, Fam. I did the following, and this time QEMU doesn't complain anything. But what's the semantics of omitting the "bitmap" parameters? And, how to continue with incremental backups after that? If I repeat the snippet below, there will be error message: {"id":"libvirt-381290","error":{"c

Re: [Qemu-discuss] One question about "drive-backup"

2018-08-22 Thread David Lee
On Wed, Aug 22, 2018 at 11:41 PM David Lee wrote: > If I repeat the snippet below, there will be error message: > {"id":"libvirt-381290","error":{"class":"GenericError","desc":"Need a > root block node"}} > > What's happening? I guess it is because the previous backup jobs were still in progress.

Re: [Qemu-discuss] One question about "drive-backup"

2018-08-22 Thread Fam Zheng
On Wed, 08/22 22:20, David Lee wrote: > Hi, list > > I was trying "drive-backup" for incremental backups, and so far so > good for individual drives. > The question is that, when I grouped the drive-backup into a > transaction, I got errors like: > > {"id":"libvirt-377183","error":{"class":"Gener

[Qemu-discuss] One question about "drive-backup"

2018-08-22 Thread David Lee
Hi, list I was trying "drive-backup" for incremental backups, and so far so good for individual drives. The question is that, when I grouped the drive-backup into a transaction, I got errors like: {"id":"libvirt-377183","error":{"class":"GenericError","desc":"a sync_bitmap was provided to backup_

Re: [Qemu-discuss] Key mapping on Windows host

2018-08-22 Thread Peter Hull
On Wed, Aug 22, 2018 at 8:05 AM Peter Hull wrote: > Further information: with odin1440 (which is just text mode), if I use '-display curses' or '-display sdl' the mapping is also incorrect but if I use '-display curses -k en_us' it is correct, or very nearly so.

Re: [Qemu-discuss] Slow boot in QEMU with virtio-scsi disks

2018-08-22 Thread Greg Kurz
On Sat, 11 Aug 2018 19:39:56 +0200 Oleksandr Natalenko wrote: > Hi. > > On 11.08.2018 14:23, Ming Lei wrote: > > Please test for-4.19/block: > > > > https://git.kernel.org/pub/scm/linux/kernel/git/axboe/linux-block.git/log/?h=for-4.19/block > > > > This slow boot issue should have been fixed b

Re: [Qemu-discuss] Monitor mode with -display curses

2018-08-22 Thread Vincenzo Romano
I am talking about a text-based guest console with (possibly) a muxed monitor console (aka qemu console). If I understood correctly, the former can only be got with -display curses and only when qemu is running on the foreground to attach the current pseudo-tty and nothing else: no pipes and no so

[Qemu-discuss] Key mapping on Windows host

2018-08-22 Thread Peter Hull
Hi All, I have a Dell laptop with a UK keyboard running Windows 10 64-bit and QEMU 3.0.0. Some of the keys do not seem to be mapped correctly in the guest. Specifically, on my keyboard, between L and the return key I have keys labelled ; (semicolon) ' (single quote) and # (hash). When I press them,