Re: [CentOS-virt] Moving vmware guests to a CentOS KVM server
2010/2/20 S.Tindall tindall.sat...@brandxmail.com: On Sat, 2010-02-20 at 02:41 +0100, Kenni Lund wrote: 2010/2/18 compdoc comp...@hotrodpc.com: I would also just use the e1000 emulation. Theres nothing better about the virtio devices... ...other than lower CPU utilization and higher throughout? Since these are CentOS/RHEL guests, I wouldn't even consider using e1000, I would just go for virtio_net. I don't have any links, but some time ago there were some benchmarks (on the KVM development list?), showing the e1000 maxing out at around 300-400mbit/s while the virtio got around 900mbit/s. Even with the much higher throughput, the virtio_net driver still had the same or lower CPU utilization. Do your own testing if in doubt. Best Regards Kenni Lund Are you using test-signed drivers or do you have a redistributable source for release-signed drivers (that chain to a microsoft root)? I don't think that anyone are talking about Windows in this thread? You don't need Microsoft signing of drivers for Linux guests ;) Never got the chance to test relative performance of e1000 vs the netkvm drivers on a M$ guest, but on a centos5 guest, virtio absolutely blows the doors off e1000 performance. Using ttcp in both directions, typical C5-host-to-C5-guests for e1000 was in the 30-60MB/s range and virtio was in the 300-400MB/s range. Exactly... :) Best Regards Kenni Lund ___ CentOS-virt mailing list CentOS-virt@centos.org http://lists.centos.org/mailman/listinfo/centos-virt
Re: [CentOS-virt] Moving vmware guests to a CentOS KVM server
On Sat, 2010-02-20 at 14:10 +0100, Kenni Lund wrote: 2010/2/20 S.Tindall tindall.sat...@brandxmail.com: Are you using test-signed drivers or do you have a redistributable source for release-signed drivers (that chain to a microsoft root)? I don't think that anyone are talking about Windows in this thread? You are correct. Thought this was a continuation of the windows guest thread (same people) and it is not: http://lists.centos.org/pipermail/centos-virt/2010-February/001654.html I missed the change in subject/title. Sorry for the noise. Steve ___ CentOS-virt mailing list CentOS-virt@centos.org http://lists.centos.org/mailman/listinfo/centos-virt
Re: [CentOS-virt] Mounting LVM contained ntfs systems.
- Ben M. cen...@rivint.com wrote: If I try to mount the LV: ~ [r...@vm1 ~]# mount -t ntfs /dev/thisvg00/thisw2kwe-b4change /mnt/ntfs NTFS signature is missing. Failed to mount '/dev/mapper/serv1vg00-w2kwe--b4cert': Invalid argument The device '/dev/mapper/serv1vg00-w2kwe--b4cert' doesn't seem to have a valid NTFS. Maybe the wrong device is used? Or the whole disk instead of a partition (e.g. /dev/sda, not /dev/sda1)? Or the other way around? Did you dd the disk or the partition? If you did the whole disk (verify with fdisk or something), you can use kpartx to add the LV as a disk and then mount the partitions that are created. -- Christopher G. Stach II http://ldsys.net/~cgs/ ___ CentOS-virt mailing list CentOS-virt@centos.org http://lists.centos.org/mailman/listinfo/centos-virt
