Posts Tagged xen
The importance of having ntpd configured
Posted by Kyle Lexmond in Sysadmin, Xen on Fedora on March 25, 2013
Ok, not really importance of having it configured, but at least a post to try and get myself to remember to do it. I discovered that the Dreamhost server I’m hosting this blog on has bad clock drift. I’m not sure why it’s happening (I’d imagine that it should be one of the first things […]
Specifying dom0 RAM in Xen – update
Posted by Kyle Lexmond in Xen on June 5, 2012
Another thing from the xen-users mailing list: Apparently the way to specify the dom0 RAM at boot in Xen has changed. You should now specify the maximum memory – dom0_mem=2G,max:2G instead of dom0_mem=2G. Also, a new addition to the Xen Best Practices suggests preventing Xen from auto-ballooning the dom0 memory down by changing autoballoon in […]
Defining the dom0 memory limit in GRUB2
Posted by Kyle Lexmond in Xen on April 30, 2012
Before I upgraded my dom0 to Fedora 16 (and by association Grub2), I had the dom0 memory limit fixed as an argument in grub.conf. When I upgraded to Grub2, I initially added it manually to the Xen boot command line, but eventually stopped doing that. Today while looking through the xen-users list, I found an […]
Fedora 16 domUs – Update
Posted by Kyle Lexmond in Xen on November 23, 2011
So, I’ve wiped my test system with the intention of doing a tutorial on installing F16 + Xen. As part of this, I looked into installing a F16 domU with virt-install. When I tried it previously, I ran into this bug, and I ended up having to vnc into the dom0 and use virt-viewer to […]
Revised Fedora virt-install command
Posted by Kyle Lexmond in Xen on October 22, 2011
I got tired of having to muck around with kpartx and such whenever a domU went down. So I decided to just go with 4 LVs per domU – root, home, swap and boot. The command to create the LVs is just one really long one, the original command replicated 4 times: lvcreate -L10G -n […]
Win2K8R2 as HVM VM on Xen 4.1
Posted by Kyle Lexmond in Xen on October 21, 2011
Config file: pastebin.com/ULE1Y49R Also, it’s working fine without the Xen extensions, though there’s (at least) one unknown device in the device manager)
Sudo broken on F16?
Posted by Kyle Lexmond in Linux on October 21, 2011
I haven’t been able to use sudo on F16Beta on both machines that I upgraded – even though I know sudo worked fine before I upgraded. Not sure why/how it broke… Turns out SELinux broke it somehow.
SELinux, Xen & LVMs
Posted by Kyle Lexmond in Xen on October 21, 2011
I discovered something new today: SELinux can and does prevent access to logical volumes. This is entirely unexpected for me, because I always thought SELinux only worked on files. I was wondering why my test VM suddenly refused to start with the error “Disk is not accessible” after I upgraded it to F16Beta. I checked […]
Creating a new RAID 6 drive & attaching it to a Xen VM
Posted by Kyle Lexmond in Linux, Xen on August 20, 2011
I have 4 2TB drives in my NAS. They are split into 2 partitions, 500GB and the remaining ~1.5TB. The 1.5TB partitions were used in a RAID5 for media – music, backups of DVDs, etc. The remaining 500GB partitions were supposed to be for crucial documents, stuff that warranted double protection against disk failure. Except […]