For my Windows workloads on Linux, I've been paying VMWare for years for their Workstation product so I can run Windows programs like Visual Studio and Quicken. Recently, having some issues with my Windows VM (VMWare using massive amounts of memory and CPU beyond the VM allocation, and causing random latency on my desktop), I thought the time was finally right to try out virsh and KVM again. Converting the VMWare image to KVM worked flawlessly via `qemu-image convert`, and then after a whole bunch of hassles getting the right virtio drivers and guest agent installed and working, the VM is running great. It's running flawlessly, just as fast or faster than my VMWare image, and way more efficient on memory and CPU. And I don't need to taint my kernel to run it.
I do have some follow-up questions though:
1) It seems the networking is not quite as straightforward as VMWare for a single-VM use case. VMWare can run the VM in bridge mode, so that it appears to the rest of my LAN as just another PC. Host-guest, and guest-other networking works perfectly. In contrast, in virsh, it looks like none of the 3 options are as transparent: https://wiki.libvirt.org/page/VirtualNetworking. Running in the default NAT mode, I have two issues:
a) My guest DNS does not transparently work to access my LAN -- only the Internet. The docs @ https://libvirt.org/formatnetwork.html do not provide any guidance for configuring DNS settings. I want to forward requests to the dnsmasq running on the host system.
b) What is the best way to configure my host system to be able to see the NATed IP addresses in the virtual network?
(Fedora 27, fully updated)
I'm struggling to relabel a root filesystem correctly for SELinux.
I've got a system where I've had to copy (rsync) / to a new harddrive.
I then changed the UUIDs in /etc/fstab, and the system is booting from
the new harddrive. So the labels went missing.
The system does not allow logins if SELinux is enabled, because some
files (including systemd-user-session) are labelled incorrectly.
I've tried various ways to get it back, but fixfiles relabel,
restorecon -vR / require SELinux enabled, and if I enable it I can't
log in to run restorecon.
I've tried /.autorelabel but it appears to be ignored. I've checked
some files with 'ls -laZ'.
When I log-in, sound is deactivated and I have to manually start it, doing:
killall -9 pulseaudio
3- open mixer go to "configation" tab and choose analogic stero duplex.
What is wrong in my sound config and how to correct this.
UFR de mathématiques et informatique
Laboratoire CNRS MAP5, UMR 8145
Université Paris Descartes
45, rue des Saints Pères
F-75270 Paris Cedex 06
Tél. +33 (0)6 7892 5822
I've just attempted to do a sudo dnf upgrade to install the 343
updates that are available, and after downloading all the packages it
got a GPG error and terminated. Has anyone else seen this and is able to
provide some guidance on what I need to look at to identify why?
[SKIPPED] vulkan-filesystem-126.96.36.199-1.fc27.noarch.rpm: Already downloaded
[SKIPPED] xdg-utils-1.1.2-4.fc27.noarch.rpm: Already downloaded
[SKIPPED] xfsprogs-4.15.1-1.fc27.x86_64.rpm: Already downloaded
Package flash-plugin-188.8.131.52-1.fc27.x86_64.rpm is not signed
The downloaded packages were saved in cache until the next successful
You can remove cached packages by executing 'dnf clean packages'.
Error: GPG check FAILED
I've got a Fedora 27 desktop that has a slight network problem.
I'm using VPN and I used nm-connection-editor to configure it so that
the VPN activates when eno1 activates. That worked fine in Fedora 26.
But after upgrade to Fedora 27 the network doesn't start properly at
startup, instead after I log in to gnome desktop I use the tools in top
right corner to Turn On Wired Connection and that brings up both eno1
and VPN just fine.
Any suggestion how to make it work at startup?
When I try to sign in to a (verizon) yahoo e-mail account via Thunderbird, it takes several seconds to get a response, then I often get this error message:
The current operation on 'Inbox' did not succeed. The mail server for account
[my e-mail account] responded: [CLIENTBUG] SELECT Command is not valid in this
I then have to exit Thunderbird, and sign in again to all the accounts I want to connect to. I usually have to do this 2-4 times before it finally downloads the folder structure and message headers successfully (though v-e-r-y slowly). I experience this problem randomly but frequently (almost daily) with all 6 of my (verizon) yahoo accounts. My incoming server is set to "imap.mail.yahoo.com:993"; my outgoing server is set to "smtp.mail.yahoo.com:465"; connection security is set to "SSL/TLS".
Yahoo e-mail does not work properly in my browser, so that's not a good work-around. I've checked both yahoo and Thunderbird on-line help; I get nothing really helpful, though I notice the problem is not unique to me.
What's the real cause of this problem, and what do I fix it?
Thank-you for your help.
Since March 08, I've received 11 messages from this list that appear empty, including 2 so far today. I have received a few (less) not empty, none today and 3 yesterday. What's causing this problem, and how do I fix it? My e-mail client is Thunderbird 52.5.2.
I will occasionally check the Fedora Hyperkitty for replies.
Yesterday one of the HDD's in a F19 (yes I know) server died. I found this
out when the server would not reboot (45miles away from where I was too :( )
The only way the server would boot was if I disconnected the drive, connected
to ATA0 /dev/sdb.
I have now replaced the drive with another of the same model and am about to
set about rebuilding the RAID1 setup. However every page that Google gives me
regarding this shows using FDisk to sort out the partition table prior to
The niggle I've got is that because these are all 3TB drives I can't use
fdisk. If I use fdisk on one of the existing drives I get:
Device Boot Start End Blocks Id System
/dev/sda1 1 4294967295 2147483647+ ee GPT
Partition 1 does not start on physical sector boundary.
My question is, what do I need to do to set up the new drive, without using
fdisk, so that I can then start rebuilding the 3 RAID1 devices on it?
If anyone has a link to a full set of instructions for restoring a large HDD
I'd appreciate it
I have been having random hangs on my new Ryzen workstation (Ryzen 5
2400G + B350 mobo). My hardware is supposedly properly supported on
4.15+ kernels. But I have been unable to boot with any of the ones in
That said, I can boot with older kernels, but the desktop hangs
randomly. When I say hang, I mean it freezes, and my only recourse is
to reset my computer. I have tried to login remotely, but then I get
"No route to host" from ssh. Looking at the journal, I can't figure
out what is causing these hangs. If someone could have a look, that
would be wonderful.
Logs from the last two hangs:
Open source is the future. It sets us free.