- Original Message -
> From: "Alberto Garcia"
> To: "qemu-discuss"
> Sent: Wednesday, September 25, 2019 8:05:50 AM
> Subject: Re: Large qcow2 performance
> On Tue, Sep 24, 2019 at 02:45:10PM -0500, Andrew Martin wrote:
>> Hi Berto,
>
- Original Message -
> From: "Alberto Garcia"
> To: "qemu-discuss"
> Sent: Tuesday, September 24, 2019 10:15:56 AM
> Subject: Re: Large qcow2 performance
> On Mon, Sep 23, 2019 at 03:17:39PM -0500, Andrew Martin wrote:
>
>> I am considering
Hello,
I am considering creating a VM with a large qcow2, around 6TB in size. This
Linux VM will be reading and writing a lot of small files to this very large
qcow2 using the VirtIO driver. Are there any concerns or guidance about creating
such a large qcow2, or performance issues with small
- Original Message -
> From: "Jakob Bohm" <jb-gnumli...@wisemo.com>
> To: qemu-discuss@nongnu.org
> Sent: Wednesday, August 17, 2016 9:34:32 AM
> Subject: Re: [Qemu-discuss] Understanding QEMU Cache Modes and Emulated Disk
> Write Cache
>
> On
- Original Message -
> From: "Fam Zheng" <f...@redhat.com>
> To: "Andrew Martin" <amar...@xes-inc.com>
> Cc: qemu-discuss@nongnu.org
> Sent: Wednesday, August 17, 2016 2:50:36 AM
> Subject: Re: [Qemu-discuss] Understanding QEMU Cache Modes a
Hello,
I am running QEMU 2.5 on Ubuntu 16.04. My guests are a mixture of Linux (Ubuntu
12.04 and newer with ext4) and Windows. The guest qcow2 images are stored in a
ZFS filesystem with sync=standard (on top of a mirrored vdev of SSDs) on the
host
Ubuntu 16.04 OS. After having read through
Hello,
I am running QEMU 2.0.0 and libvirt 1.2.2 on Ubuntu 14.04 LTS. My KVM VMs use
QCOW2 files stored in a local ext4 filesystem. This normally works great,
however today I experienced corruption of one of my VMs disks, causing a kernel
panic in the VM:
qcow2: Preventing invalid write on
barriers states that Write barriers
enforce proper on-disk ordering of journal commits, making volatile disk write
caches safe to use, at some performance penalty. Does this apply to qcow2 VM
images?
Thanks,
Andrew Martin
Technology Ltd. 4-Port PCIe
Serial Adapter
How can I give the VM access to these serial ports, either by
PCI pass-through or by virtualizing them in the host somehow?
Thanks,
Andrew
- Original Message -
From: Tony Su ton...@su-networking.com
To: Andrew Martin amar...@xes-inc.com
Cc