Re: virtual disks perfermonca <=2MB/s

2017-02-22 Thread Mimiko
On 22.02.2017 16:04, Darac Marjal wrote: StackExchange (http://serverfault.com/questions/407842/incredibly-slow-kvm-disk-performance-qcow2-disk-files-virtio) suggests that QCOW2 may be a factor, and to use: $ qemu-img create -f qcow2 -o preallocation=metadata,compat=1.1,lazy_refcounts=on

Re: virtual disks perfermonca <=2MB/s

2017-02-22 Thread Darac Marjal
On Wed, Feb 22, 2017 at 10:17:01AM +0200, Mimiko wrote: Hello. I already wrote to qemu mail list and didn't find an answer. I've setup qemu / kvm on Debian Wheezy to host some Debian Jessie guests. I create disk like this: virsh vol-create-as --pool default --name root.vhd --capacity 50G

Re: virtual disks perfermonca <=2MB/s

2017-02-22 Thread Mimiko
On 22.02.2017 10:40, Joel Wirāmu Pauling wrote: Why are you using vhd instead of qcow2? I would wager it's a combination of the vhd format having some bug. Try with qcow2 first. I tried and the write speed is the same.

Re: virtual disks perfermonca <=2MB/s

2017-02-22 Thread Joel Wirāmu Pauling
Why are you using vhd instead of qcow2? I would wager it's a combination of the vhd format having some bug. Try with qcow2 first. On 22 February 2017 at 21:17, Mimiko wrote: > Hello. > > I already wrote to qemu mail list and didn't find an answer. > > I've setup qemu / kvm on

virtual disks perfermonca <=2MB/s

2017-02-22 Thread Mimiko
Hello. I already wrote to qemu mail list and didn't find an answer. I've setup qemu / kvm on Debian Wheezy to host some Debian Jessie guests. I create disk like this: virsh vol-create-as --pool default --name root.vhd --capacity 50G --format vpc Then create a virtual with this: virt-install