IPv6 with PPPoE on Ubuntu

/etc/sysctl.conf

net.ipv6.conf.all.forwarding=1
net.ipv6.conf.ppp0.accept_ra=2

/etc/ppp/peers/dsl-provider (or anything like this)

ipv6 ,

/etc/ppp/ipv6-up.d/radvd (or anything you like)

/etc/init.d/wide-dhcpv6-client restart
/etc/init.d/radvd restart

/etc/wide-dhcpv6/dhcp6c.conf

interface ppp0 {
    send ia-pd 0;
};

id-assoc pd 0 {
    prefix-interface eth0 {
        sla-len 0;
        sla-id 1;
    };
};

/etc/radvd.conf

interface eth0
{
    AdvSendAdvert on;
    prefix ::/64
    {
        AdvOnLink on;
        AdvAutonomous on;
        AdvRouterAddr on;
    };
};

install MFC-J625DW driver on Ubuntu 14.04

#get Driver Install Tool on  brother support site, and unzip it
gunzip linux-brprinter-installer-2.0.0-1.gz

# run the installer
sudo sh linux-brprinter-installer-2.0.0-1
 
# when prompt "Will you specify the Device URI?", enter "Y "
# record the nodename like "lpd://BRW9CD21EACxxxx/BINARY_P1"
# but choose "(A): Auto. (dnssd://Brother%20MFC-J625DW._ipp._tcp.local/)"
# just press enter when it says "enter IP address ->"
# config sane using nodename
brsaneconfig4 -a name=MFC-J625DW model=MFC-J625DW nodename=BRW9CD21EACxxxx

sample tinc-up script to send only forwarded packets to VPN

#!/bin/bash

#match /etc/iproute2/rt_tables
TABLE=$INTERFACE
MARK=0x1

ifconfig $INTERFACE 192.168.11.254 netmask 255.255.0.0

echo 1 >/proc/sys/net/ipv4/conf/eth0/proxy_arp
echo 1 >/proc/sys/net/ipv4/conf/$INTERFACE/proxy_arp
echo 1 >/proc/sys/net/ipv4/ip_forward

#To accept asymmetrically routed (outgoing routes and incoming routes are different) packets
echo 2 > /proc/sys/net/ipv4/conf/$INTERFACE/rp_filter

ip route add default dev $INTERFACE table $TABLE
ip rule add fwmark $MARK table $TABLE

iptables -A PREROUTING -t mangle -d 172.16.11.0/24 -j ACCEPT
iptables -A PREROUTING -t mangle -d 192.168.11.0/24 -j ACCEPT
iptables -A PREROUTING -t mangle -j MARK --set-mark $MARK

qvdpautest 0.5.1

• Intel(R) Celeron(R) CPU G1610 @ 2.60GHz
  NVIDIA GPU GeForce GT 630 (GK208) at PCI:1:0:0 (GPU-0)
• VDPAU API version : 1
  VDPAU implementation : NVIDIA VDPAU Driver Shared Library  331.67  Fri Apr  4 11:46:48 PDT 2014
  
  SURFACE GET BITS: 992.328 M/s
  SURFACE PUT BITS: 1367.12 M/s
  
  MPEG DECODING (1920x1080): 187 frames/s
  MPEG DECODING (1280x720): 413 frames/s
  H264 DECODING (1920x1080): 128 frames/s
  H264 DECODING (1280x720): 267 frames/s
  VC1 DECODING (1440x1080): 83 frames/s
  MPEG4 DECODING (1920x1080): 131 frames/s
  
  MIXER WEAVE (1920x1080): 648 frames/s
  MIXER BOB (1920x1080): 1141 fields/s
  MIXER TEMPORAL (1920x1080): 353 fields/s
  MIXER TEMPORAL + IVTC (1920x1080): 279 fields/s
  MIXER TEMPORAL + SKIP_CHROMA (1920x1080): 452 fields/s
  MIXER TEMPORAL_SPATIAL (1920x1080): 223 fields/s
  MIXER TEMPORAL_SPATIAL + IVTC (1920x1080): 189 fields/s
  MIXER TEMPORAL_SPATIAL + SKIP_CHROMA (1920x1080): 258 fields/s
  MIXER TEMPORAL_SPATIAL (720x576 video to 1920x1080 display): 672 fields/s
  MIXER TEMPORAL_SPATIAL + HQSCALING (720x576 video to 1920x1080 display): 531 fields/s
  
  MULTITHREADED MPEG DECODING (1920x1080): 153 frames/s
  MULTITHREADED MIXER TEMPORAL (1920x1080): 249 fields/s
   
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IOzone 3.405

Phoronix Test Suite v4.8.3
System Information

Hardware:
Processor: AMD FX-8120 Eight-Core @ 3.10GHz (8 Cores), Motherboard: ASUS M5A99FX PRO R2.0, Chipset: AMD RD890 bridge, Memory: 16384MB, Disk: 250GB Western Digital WD2500AAJS-7 + 200GB Seagate ST3200827AS + 200GB Western Digital WD2000JD-00H + 4001GB Western Digital WD40PURX-64G + 4001GB Western Digital WD40EFRX-68W + 2 x 3001GB Seagate ST3000DM001-1CH1 + 3001GB Seagate ST3000DM001-9YN1 + 160GB Seagate ST9160821AS + 2 x 500GB Seagate ST3500418AS + 750GB Western Digital WD7500AALX-0 + 3001GB Western Digital WD30EURS-63S + 250GB Seagate ST3250310AS + 160GB Hitachi HDS72161 + 320GB Seagate ST3320620NS, Graphics: AMD Radeon HD 5000/6000/7350/8350 512MB, Audio: Realtek ALC892, Monitor: TV-2003, Network: Intel 82546EB Gigabit

Software:
OS: Ubuntu 14.04, Kernel: 3.13.0-24-generic (x86_64), Display Server: X Server 1.15.1, Display Driver: radeon 7.3.0, Compiler: GCC 4.8, File-System: btrfs, Screen Resolution: 1280x1024

• 3外 - Silicon Image, Inc. SiI 3531 [SATALink/SATARaid] Serial ATA Controller (rev 01)
• IOzone 3.405:
      pts/iozone-1.8.0 [Record Size: 4Kb - File Size: 8GB - Disk Test: Read Performance]
      Test 1 of 2
      Estimated Trial Run Count:    3
      Estimated Test Run-Time:      3 Minutes
      Estimated Time To Completion: 5 Minutes
          Started Run 1 @ 17:45:29
          Started Run 2 @ 17:46:29
          Started Run 3 @ 17:47:34  [Std. Dev: 1.36%]
  
      Test Results:
          2336.94921875
          2377.630859375
          2400.916015625
  
      Average: 2371.83 MB/s
  
  
  IOzone 3.405:
      pts/iozone-1.8.0 [Record Size: 4Kb - File Size: 8GB - Disk Test: Write Performance]
      Test 2 of 2
      Estimated Trial Run Count:    3
      Estimated Time To Completion: 3 Minutes
          Started Run 1 @ 17:48:39
          Started Run 2 @ 17:49:32
          Started Run 3 @ 17:50:24  [Std. Dev: 1.78%]
  
      Test Results:
          343.2763671875
          345.51953125
          334.0791015625
  
      Average: 340.96 MB/s
        

AIO-Stress 4+10(CyberSLIM S810-U3S)

AIO-Stress 0.21:
    pts/aio-stress-1.1.1
    Disk Test Configuration

Phoronix Test Suite v4.8.3
System Information

Hardware:
Processor: AMD FX-8120 Eight-Core @ 3.10GHz (8 Cores), Motherboard: ASUS M5A99FX PRO R2.0, Chipset: AMD RD890 bridge, Memory: 16384MB, Disk: 2 x 500GB Seagate ST3500418AS + 3001GB Western Digital WD30EURS-63S + 750GB Western Digital WD7500AALX-0 + 320GB Seagate ST3320620NS + 250GB Western Digital WD2500AAJS-7 + 200GB Seagate ST3200827AS + 250GB Seagate ST3250310AS + 200GB Western Digital WD2000JD-00H + 160GB Hitachi HDS72161 + 4001GB Western Digital WD40PURX-64G + 4001GB Western Digital WD40EFRX-68W + 3001GB Seagate ST3000DM001-1CH1 + 3001GB Seagate ST3000DM001-9YN1 + 60GB OCZ AGILITY3, Graphics: ASUS NVIDIA GeForce GT 520 2048MB, Audio: Realtek ALC892, Monitor: TV-2003, Network: Intel 82546EB Gigabit

Software:
OS: Ubuntu 14.04, Kernel: 3.13.0-24-generic (x86_64), Desktop: Unity 7.2.0, Display Server: X Server 1.15.1, Display Driver: nouveau 1.0.10, Compiler: GCC 4.8, File-System: btrfs, Screen Resolution: 1280x1024

• Silicon Image, Inc. SiI 3124 PCI-X Serial ATA Controller (rev 01)
•     Estimated Time To Completion: 4 Minutes
          Started Run 1 @ 19:45:59
          Started Run 2 @ 19:46:44
          Started Run 3 @ 19:47:22  [Std. Dev: 13.65%]
          Started Run 4 @ 19:48:06  [Std. Dev: 25.82%]
          Started Run 5 @ 19:48:38  [Std. Dev: 23.33%]
          Started Run 6 @ 19:49:22  [Std. Dev: 24.80%]
  
      Test Results:
          67.26
          88.51
          77.78
          120.07
          79.18
          121.01
  
      Average: 92.30 MB/s
   
• Silicon Image, Inc. SiI 3132 Serial ATA Raid II Controller (rev 01)
•     Estimated Time To Completion: 4 Minutes
          Started Run 1 @ 00:30:10
          Started Run 2 @ 00:30:51
          Started Run 3 @ 00:31:16  [Std. Dev: 37.72%]
          Started Run 4 @ 00:31:40  [Std. Dev: 48.19%]
          Started Run 5 @ 00:32:24  [Std. Dev: 41.40%]
          Started Run 6 @ 00:32:49  [Std. Dev: 40.43%]
  
      Test Results:
          75.66
          129.92
          169.65
          55.53
          140.96
          83.64
  
      Average: 109.23 MB/s
   
• Silicon Image, Inc. SiI 3531 [SATALink/SATARaid] Serial ATA Controller (rev 01)
•     Estimated Time To Completion: 4 Minutes
          Started Run 1 @ 06:53:18
          Started Run 2 @ 06:54:01
          Started Run 3 @ 06:54:25  [Std. Dev: 38.74%]
          Started Run 4 @ 06:54:51  [Std. Dev: 49.75%]
          Started Run 5 @ 06:55:33  [Std. Dev: 42.55%]
          Started Run 6 @ 06:55:57  [Std. Dev: 39.78%]
  
      Test Results:
          71.95
          142.43
          166.68
          54.39
          141
          95.99
  
      Average: 112.07 MB/s
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多層硬碟外接盒之使用心得

外接盒：

大衛肯尼CyberSLIM S810-U3S 10層3.5吋硬碟外接盒
 

聯立EX-50

一起接上電腦，裡面放12顆大小不一之HDD。跑btrfs的RAID-5。

AIO-Stress 0.21:
    pts/aio-stress-1.1.1
    Disk Test Configuration

Phoronix Test Suite v4.8.3
System Information

Hardware:
Processor: Intel Core 2 Quad Q8400 @ 2.67GHz (4 Cores), Motherboard: ASUS P5QL-EM, Chipset: Intel 4 DRAM + ICH10, Memory: 6144MB, Disk: 3001GB Seagate ST3000DM001-1CH1 + 4001GB Western Digital WD40EFRX-68W + 4001GB Western Digital WD40PURX-64G + 3001GB Seagate ST3000DM001-9YN1 + 3001GB Western Digital WD30EURS-63S + 200GB Western Digital WD2000JD-00H + 250GB Western Digital WD2500AAJS-7 + 160GB Hitachi HDS72161 + 250GB Seagate ST3250310AS + 500GB Seagate ST3500418AS + 320GB Seagate ST3320620NS + 250GB Hitachi HDT722525DLA380 + 60GB OCZ AGILITY3, Graphics: Intel 4 IGP, Audio: Realtek ALC1200, Network: Realtek RTL8111/8168/8411

Software:
OS: Ubuntu 14.04, Kernel: 3.13.0-24-generic (x86_64), Display Server: X Server 1.15.1, Display Driver: intel 2.99.910, Compiler: GCC 4.8, File-System: btrfs, Screen Resolution: 1280x1024

btrfs:

Data, RAID5: total=20.28GiB, used=9.01GiB
System, RAID1: total=32.00MiB, used=16.00KiB
Metadata, RAID1: total=1.00GiB, used=19.86MiB

        Total devices 12 FS bytes used 9.03GiB
        devid    1 size 232.89GiB used 1.84GiB path /dev/sdi
        devid    2 size 232.89GiB used 1.84GiB path /dev/sdl
        devid    4 size 3.64TiB used 2.88GiB path /dev/sdb
        devid    5 size 2.73TiB used 1.84GiB path /dev/sde
        devid    6 size 298.09GiB used 1.84GiB path /dev/sdk
        devid    7 size 2.73TiB used 1.84GiB path /dev/sda
        devid    8 size 465.76GiB used 1.84GiB path /dev/sdj
        devid    9 size 3.64TiB used 2.88GiB path /dev/sdc
        devid    10 size 2.73TiB used 1.84GiB path /dev/sdd
        devid    11 size 186.31GiB used 1.84GiB path /dev/sdf
        devid    12 size 232.83GiB used 1.84GiB path /dev/sdg
        devid    13 size 149.05GiB used 1.84GiB path /dev/sdh

使用心得：

eSATA的port multiplier (PMP)分兩種：

CBS	Supports Command Based Switching port multiplier
FBS	Supports FIS Based Switching port multiplier

因為 RAID5 需要同時存取所有硬碟，所以有FBS才行。

• Renesas Technology Corp. uPD720201 USB 3.0 Host Controller
• EX-50沒有USB功能。
• 只能使用S810-U3S(10層)中最多8顆硬碟，可能因為SATA->USB關係，最多就70-80MB/s左右。
• NCQ不確定能不能用，另一個缺點是無法使用SMART。
• Silicon Image, Inc. SiI 3132 Serial ATA Raid II Controller

•    Test Results:
          100.37
          125.01
          122.78
          102.51
          129.05
          130.42
      Average: 118.36 MB/s

• 一片卡接兩個eSATA，就可以FIS控制十幾個硬碟（我用12~14個），很好用。
• 聽說這個晶片的上限就是150MB/s左右，果不其然。
• Silicon Image, Inc. SiI 3132 + SiI 3531

• Test Results:
          144.09
          154.43
          161.83
          143.47
          163.34
          152.7
      Average: 153.31 MB/s

• 兩個晶片分工合作，似乎有進步一點，但沒有達到我的期望(200MB/s)。
• ASMedia Technology Inc. ASM1061 Serial ATA Controller
• 似乎只能跑CBS，在我的測試環境下非常不穩，會當機。
• 使用eSATA+PMP的話，非常不推薦。
• HighPoint RocketRAID 622 (Marvell 9128)
• 只能辨識5個硬碟，而且BIOS RAID的功能會使得OS看不到硬碟。
• 使用eSATA+PMP的話，非常不推薦。
• HighPoint Rocket 622A (Marvell 9128)
• 一直出現PMP revalidation failed，根本無法使用。
• 使用eSATA+PMP的話，非常不推薦。
• Marvell Technology Group Ltd. Device 9215
• 似乎只能辨識6個硬碟
• 很久都開不了機
• 下次再試試
• ASUS M5A99FX PRO R2.0 (SB950) + Sil 3531
•      Test Results:
          114.84
          131.7
          132.73
          137.52
          138.44
          128.12
  
      Average: 130.56 MB/s
  
      Test Results:
          138.72
          141.56
          97.98
          151.33
          85.06
          126.26
  
      Average: 123.49 MB/s
• SB950可以用辨識超過5個（實測7個），沒遇到當機。
• SB950的PMP雖然號稱FBS，但是效果看來比Sil 3132/3531還糟。

結論：

• 感覺 SATA port multiplier 似乎是被放棄的技術，低階的機器用不到，高階的都跑去用 SAS 的技術了。不過若是不要太計較速度，SATA PMP 還是比較便宜。
• 目前感覺只有 Silicon Image 的 SATA 3.0 Gbps 晶片可以比較好的支援 PMP，其他ASMedia和Marvell較新的 SATA 6.0 Gbps 晶片反而支援度都不好。
• SiI 3132和SiI 3531雖然號稱 3.0 Gbps實際上可能只有 1.5 Gbps (150 MB/s)，但已是目前最佳的選擇。下次試試 SiI 3124。