[CentOS-virt] KVM virtio block layer - is TRIM/DISCARD supported?

2013-02-02 Thread Dmitry E. Mikhailov
Hi, One question please: If I use SSD as a storage on a host machine, does KVM's virtio I/O layer pass the TRIM/DISCARD commands to the SSD? I guess the question would be twofold: 1) is TRIM supported/forwarded if only one LVM'ed partition of SSD is forwarded? 2) is TRIM supported/forwarded if

Re: [CentOS-virt] KVM virtio block layer - is TRIM/DISCARD supported?

2013-02-02 Thread Nico Kadel-Garcia
On Sat, Feb 2, 2013 at 5:12 AM, Dmitry E. Mikhailov d.mikhai...@infocommunications.ru wrote: Hi, One question please: If I use SSD as a storage on a host machine, does KVM's virtio I/O layer pass the TRIM/DISCARD commands to the SSD? Doesn't look like it, *yet*. That looks like it came out

Re: [CentOS] intel_iommu=on = No root device found

2013-02-02 Thread Nils Caspar
I did some experimenting with and without the RAID card installed. There are no DMAR errors, when the RAID card isn't present... Too bad! Anyone a suggestion for a RAID card that works with IOMMU? Nils -- nilscaspar.ch On 30.01.2013, at 23:21, Nils Caspar ncas...@me.com wrote: Try booting

Re: [CentOS] weird issue with qemu-kvm network...

2013-02-02 Thread skull
Am 02.02.2013 02:12, schrieb James Hogarth: What i did in terms of network changes was the following script. It's an old one i used when i didn't work with virsh, because i followed an old tutorial for kvm-qemu on CentOS 5. It basically creates a new bridge called bg0, creates a tap0

Re: [CentOS] weird issue with qemu-kvm network...

2013-02-02 Thread skull
Am 01.02.2013 23:39, schrieb James Hogarth: You don't need a DE for that just yum install xauth virt-manager and ssh -X to forward it to your local X server. By the way I would be very interested in that bit, because I never managed to actually get X forwarding to work from a server running

Re: [CentOS] weird issue with qemu-kvm network...

2013-02-02 Thread skull
Am 02.02.2013 14:58, schrieb skull: Am 01.02.2013 23:39, schrieb James Hogarth: You don't need a DE for that just yum install xauth virt-manager and ssh -X to forward it to your local X server. By the way I would be very interested in that bit, because I never managed to actually get X

[CentOS] X forwarding

2013-02-02 Thread skull
How does one use X forwarding properly? I got a server running CentOS 6.3 at runlevel 3 (no DE installed) I try to access virt-manager via x-forwarding from another CentOS 6.3 client in my network (runlevel 5 with default gnome) on The server i changed my sshd_config: X11Forwarding yes i

Re: [CentOS] X forwarding

2013-02-02 Thread Brett Serkez
On Sat, Feb 2, 2013 at 9:49 AM, skull skul...@gmx.ch wrote: How does one use X forwarding properly? ... Anything else there is to do? When i try to: ssh -X root@server virt-manager Just to be sure, you are in an xterm with DISPLAY set to the local X-Server before issuing the ssh? Try

Re: [CentOS] X forwarding

2013-02-02 Thread skull
Am 02.02.2013 16:45, schrieb Brett Serkez: On Sat, Feb 2, 2013 at 9:49 AM, skull skul...@gmx.ch wrote: How does one use X forwarding properly? ... Anything else there is to do? When i try to: ssh -X root@server virt-manager Just to be sure, you are in an xterm with DISPLAY set to the

Re: [CentOS] weird issue with qemu-kvm network...

2013-02-02 Thread James Hogarth
Isn't the rhel way to install NetworkManager anyway? Because then you can forget all your ifcfg scripts anyway because they will be overwritten by NM. At least that was the cause when i had NetworkManager installed... (That was why i removed it if i remember correctly) Does anyone have a good

Re: [CentOS] weird issue with qemu-kvm network...

2013-02-02 Thread skull
Am 02.02.2013 16:58, schrieb James Hogarth: Isn't the rhel way to install NetworkManager anyway? Because then you can forget all your ifcfg scripts anyway because they will be overwritten by NM. At least that was the cause when i had NetworkManager installed... (That was why i removed it if i