* Export necessary system variables:# export XEND_DEBUG=1# export XEND_DAEMONIZE=0* Start xend tracing:# /usr/sbin/xend trace_startThe trace file will be available at /var/log/xen/xend.trace.* Debug xend using the Python Debugger:# python -m pdb
If you ever want to get to the grub menu while using pygrub - there is a really simple way of doing that. Just add : bootargs="-i"into the /etc/xen/{domU config file}. And the next time you start the VM, it will bring up the grub menu. Quite handy
ifb The Intermediate Functional Block device is the successor to the IMQ iptables module that was never integrated. Advantage over current IMQ; cleaner in particular in SMP; with a _lot_ less code. Old Dummy device functionality is preserved while
The Xen StoreThe Xen Store Daemon provides a simple tree-like database to which we canread and write values. The Xen Store code is mainly undertools\xenstore.It replaces the XCS, which was a daemon handling control messages.The physical xenstore
Xen PV Bootloader為什麼選擇bootloader = '/usr/bin/pygrub' Why? PyGrub enables you to start Linux DomUs with the kernels that lie in the filesystem of the DomU instead of with a Kernel that lies in the filesystem of the Dom0. This enables easier kernel
I'm looking for some definite info about when it's allowed to restartthe various Xen daemons (xend, xenstored and xenconsoled).Up to now I worked with the assumption that I can restart them whileguest domains are running on the host and there's no
Xen虛擬機器的建立和啟動半虛擬化擷取Sample Image到Jailtime.org下載,並解壓(注預設root密碼為password)# tar jxvf centos.5-0.20070424.img.tar.bz2centos.5-0.imgcentos.5-0.xen2.cfgcentos.5-0.xen3.cfgcentos.swap當然,也可以到http://www.rpath.com/rbuilder下載建立設定檔參考centos.5-0.xen2.cfg和centos.5-0
在tc添加class的時候有時會提示:HTB: quantum of class 10001 is big. Consider r2q change.根據HTB的官方文檔顯示,quantum是在可以“借”的情況下,一次可以“借”多少,並且說這個值最好盡量的小,但要大於MTU;而且這個值是不用手動設定,它會根據r2q的值計算出來。Changing burst will not remove the warning. r2q is "rate to quantum" is usedto
Quantum & r2qLet's assume we have 2 classes with the same parent :Parent : ceil = rate = 100class 1 : rate = 40 and ceil = 100class 2 : rate = 20 and ceil = 100(the used numbers are just theoretical to explain how it works)Both classes are