Deep dive into Kernel

then CPUs are correctly added to system.All you need to do now is write to corresponding sysfs nodes to bring those CPUs online.To automate this process, simply create a `cpu-online.rules` under /etc/udev/rules.d in target domain and tell udev to reload its rules with udevadm control --reload-rules (or restart udevd).Content of `cpu-online.rules`:SUBSYSTEM=="cpu",ACTION=="add",RUN+="/bin/sh -c '..

TAP 인터페이스 생성/삭제 ip tuntap add tap10 mode tapip tuntap del tap10 mode tap 기존의 tunctl 이 아닌 ip 명령어를 통해서 tap 인터페이스를 만드는 방법

VM의 상태를 manual하게 변경하는 방법 root@controller-vm:/usr/lib/python2.7/dist-packages/nova/scheduler# nova list+--------------------------------------+------+--------+------------+-------------+-----------------------+| ID | Name | Status | Task State | Power State | Networks |+--------------------------------------+------+--------+------------+-------------+-----------------------+| a9e86572-67d2-49ba-8..

mklabel gptmkpart primary 0 100000 mkpart primary 2048s 100%단위는 M임

Logical Volume 생성 관련 명령어1) pvcreate2) pvscan3) vgcreate4) vgscan5) lvcreate6) lvscan root@cnode25-m:~# pvcreate /dev/sdb1 Physical volume "/dev/sdb1" successfully createdroot@cnode25-m:~# pvscan PV /dev/sdb1 lvm2 [465.25 GiB] Total: 1 [465.25 GiB] / in use: 0 [0 ] / in no VG: 1 [465.25 GiB]root@cnode25-m:~# vgcreate DataVG /dev/sdb1 Volume group "DataVG" successfully createdroot@cnode25-m:~# vgs..

root@cnode04-m:~# ./test.sh a bThe number of arguments is: 2failroot@cnode04-m:~# ./test.sh a b cThe number of arguments is: 3successgoing... root@cnode04-m:~# cat test.shecho "The number of arguments is: $#" if [ $# -eq 3 ]then echo "success"else echo "fail" exitfi echo "going..."

If your ssh client connects server slowly, edit /etc/ssh/sshd_config in ssh-server. #add UseDNS no

DMA Offloading 개요ㅇ Guest 의 DMA operation의 request만 처리하며, 실제적인 DMA operation은 Host에서 수행함ㅇ SR-IOV에 적용 (non IOMMU 환경에서)

ubuntu에서 mysql-server 설치시 root 비밀번호 자동 입력 echo "mysql-server-5.5 mysql-server/root_password password root" | debconf-set-selectionsecho "mysql-server-5.5 mysql-server/root_password_again password root" | debconf-set-selectionsapt-get -y install mysql-server-5.5