2010-08-27

• 14:00~15:00 雲端技術展示 - 抓抓龍(Crawlzilla)簡報、展示
• 15:00~17:00 Crawlzilla 後續發展方向討論 - ​開 issue

• [備忘] ​Linux 遇到 kernel panic 後可自動重新開機(Auto Reboot)

  $ sudo sysctl -w kernel.panic = 20
  

  或者編輯 /etc/sysctl.conf 加入

  kernel.panic = 20
  

Storage Virtualization

• ​Storage Virtualization Deep Dive
  • 

Netboot.me

• [緣起] 想要用 USB 拇指碟來安裝 Debian 5.0 (lenny)
• [作法] 環保一點，所以下載 netboot.me USB Image

  $ wget http://static.netboot.me/gpxe/netbootme.usb
  

• 接上 USB 拇指碟，透過 /proc/partitions 確認磁碟位置

  $ cat /proc/partitions
  major minor  #blocks  name
  
     8        0  488386584 sda
     8        1  486327296 sda1
     8        2    2057216 sda2
     8       16    1957888 sdb
  

• 確認在 /dev/sdb 之後就使用 dd 把 USB Image 寫入拇指碟

  $ sudo dd if=netbootme.usb of=/dev/sdb
  

• [狀況] 找不到網路卡驅動程式 :(

Debian

• [緣起] 想要用 USB 拇指碟來安裝 Debian 5.0 (lenny)
• [參考] Debian GNU/Linux 安裝手冊 - ​4.4. 準備從 USB 隨身碟開機的檔案，首先嘗試『4.4.1. 複製檔案 — 簡單的方法』

  ~$ sudo su -
  ~# wget http://free.nchc.org.tw/debian/dists/Debian5.0.5/main/installer-amd64/current/images/hd-media/boot.img.gz
  ~# zcat boot.img.gz > /dev/sdb
  ~# mount /dev/sdb /mnt
  ~# cd /mnt
  /mnt# wget http://free.nchc.org.tw/debian-cd/current/amd64/iso-cd/debian-505-amd64-businesscard.iso
  ~# cd
  ~# umount /mnt
  

• [狀況] 找不到網路卡驅動程式 :(
• [解法] 安裝 Ubuntu 10.04 LTS 可以正常驅動

  jazz@cloud:~$ lsb_release -a
  No LSB modules are available.
  Distributor ID:	Ubuntu
  Description:	Ubuntu 10.04.1 LTS
  Release:	10.04
  Codename:	lucid
  jazz@cloud:~$ uname -a
  Linux cloud 2.6.32-24-server #41-Ubuntu SMP Thu Aug 19 02:47:08 UTC 2010 x86_64 GNU/Linux
  jazz@cloud:~$ lspci 
  00:00.0 Host bridge: Intel Corporation 4 Series Chipset DRAM Controller (rev 03)
  00:01.0 PCI bridge: Intel Corporation 4 Series Chipset PCI Express Root Port (rev 03)
  00:02.0 VGA compatible controller: Intel Corporation 4 Series Chipset Integrated Graphics Controller (rev 03)
  00:02.1 Display controller: Intel Corporation 4 Series Chipset Integrated Graphics Controller (rev 03)
  00:03.0 Communication controller: Intel Corporation 4 Series Chipset HECI Controller (rev 03)
  00:03.2 IDE interface: Intel Corporation 4 Series Chipset PT IDER Controller (rev 03)
  00:03.3 Serial controller: Intel Corporation 4 Series Chipset Serial KT Controller (rev 03)
  00:19.0 Ethernet controller: Intel Corporation 82567LM-3 Gigabit Network Connection (rev 02)
  00:1a.0 USB Controller: Intel Corporation 82801JD/DO (ICH10 Family) USB UHCI Controller #4 (rev 02)
  00:1a.1 USB Controller: Intel Corporation 82801JD/DO (ICH10 Family) USB UHCI Controller #5 (rev 02)
  00:1a.2 USB Controller: Intel Corporation 82801JD/DO (ICH10 Family) USB UHCI Controller #6 (rev 02)
  00:1a.7 USB Controller: Intel Corporation 82801JD/DO (ICH10 Family) USB2 EHCI Controller #2 (rev 02)
  00:1b.0 Audio device: Intel Corporation 82801JD/DO (ICH10 Family) HD Audio Controller (rev 02)
  00:1c.0 PCI bridge: Intel Corporation 82801JD/DO (ICH10 Family) PCI Express Port 1 (rev 02)
  00:1c.1 PCI bridge: Intel Corporation 82801JD/DO (ICH10 Family) PCI Express Port 2 (rev 02)
  00:1d.0 USB Controller: Intel Corporation 82801JD/DO (ICH10 Family) USB UHCI Controller #1 (rev 02)
  00:1d.1 USB Controller: Intel Corporation 82801JD/DO (ICH10 Family) USB UHCI Controller #2 (rev 02)
  00:1d.2 USB Controller: Intel Corporation 82801JD/DO (ICH10 Family) USB UHCI Controller #3 (rev 02)
  00:1d.7 USB Controller: Intel Corporation 82801JD/DO (ICH10 Family) USB2 EHCI Controller #1 (rev 02)
  00:1e.0 PCI bridge: Intel Corporation 82801 PCI Bridge (rev a2)
  00:1f.0 ISA bridge: Intel Corporation 82801JDO (ICH10DO) LPC Interface Controller (rev 02)
  00:1f.2 IDE interface: Intel Corporation 82801JD/DO (ICH10 Family) 4-port SATA IDE Controller (rev 02)
  00:1f.3 SMBus: Intel Corporation 82801JD/DO (ICH10 Family) SMBus Controller (rev 02)
  00:1f.5 IDE interface: Intel Corporation 82801JD/DO (ICH10 Family) 2-port SATA IDE Controller (rev 02)
  

  從 lspci -n 可以查出 Intel Corporation 82567LM-3 Gigabit 網卡的 Device ID 是 8086:10de 驅動模組為 e1000e

  jazz@cloud:~$ lspci -n
  00:19.0 0200: 8086:10de (rev 02)
  jazz@cloud:~$ modinfo e1000e | grep v00008086d000010DE
  alias:          pci:v00008086d000010DEsv*sd*bc*sc*i*
  

• 因為『4.4.1. 複製檔案 — 簡單的方法』只能用在 netinst.iso 或 businesscard.iso 兩種容量比較小的，若要使用完整版 ISO 就得改用 ​4.4.2. 複製檔案 — 靈活的方法

  ~$ sudo cfdisk /dev/sdb      #### 把至少 700MB 的 USB 空間切給 /dev/sdb1
  ~$ sudo mkdosfs /dev/sdb1
  ~$ sudo syslinux /dev/sdb1
  ~$ sudo mount /dev/sdb1 /mnt/
  ~$ cd /mnt/
  /mnt$ sudo wget http://free.nchc.org.tw/debian/dists/Debian5.0.5/main/installer-amd64/current/images/hd-media/vmlinuz
  /mnt$ sudo wget http://free.nchc.org.tw/debian/dists/Debian5.0.5/main/installer-amd64/current/images/hd-media/initrd.gz
  /mnt$ cat > /tmp/syslinux.cfg << EOF
  default vmlinuz
  append initrd=initrd.gz ramdisk_size=12000 root=/dev/rd/0 init=/linuxrc rw
  EOF
  /mnt$ sudo mv /tmp/syslinux.cfg .
  /mnt$ sudo wget http://free.nchc.org.tw/debian-cd/current/amd64/iso-cd/debian-505-amd64-CD-1.iso
  /mnt$ cd ~
  ~$ sudo umount /mnt
  

  • [結果] 無法正常開機 :(
• [再接再厲] 使用 Squeeze 的 netinst.iso 來試試看，因為確認過 lenney 的 e1000e 沒有支援 8086:10de，而 Squeeze 的核心是 2.6.32+28，注意！！要從網路上下載 testing 版本的 boot.img.gz 來用，而不是拿 stable 的版本喔~

  ~$ sudo su -
  ~# wget http://ftp.nl.debian.org/debian/dists/testing/main/installer-amd64/current/images/hd-media/boot.img.gz
  ~# zcat boot.img.gz > /dev/sdb
  ~# mount /dev/sdb /mnt
  ~# cd /mnt
  /mnt# wget http://cdimage.debian.org/cdimage/squeeze_di_alpha1/amd64/iso-cd/debian-testing-amd64-businesscard.iso
  ~# cd
  ~# umount /mnt
  

• [狀況] 還是找不到網路卡驅動程式 :(

• 使用 Backported d-i image 進行安裝

  ~$ sudo su -
  ~# wget http://kmuto.jp/debian/d-i/2.6.32/amd64/hd-media/boot.img.gz
  ~# zcat boot.img.gz > /dev/sdb
  ~# mount /dev/sdb /mnt
  ~# cd /mnt
  /mnt# wget http://cdimage.debian.org/cdimage/squeeze_di_alpha1/amd64/iso-cd/debian-testing-amd64-businesscard.iso
  ~# cd
  ~# umount /mnt