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XFS Filesystem Support in Veritas Cluster Server

Finally a blog post after more than 2 years! ;-)

I can't say I was too busy to update this but I was lazy :-P

There is nothing much to say but I've been working for Huawei Technologies since last summer.

Ok, lets talk about the topic.

I was setting up several clusters recently and I formatted the storage using my favorite filesystem, XFS :) But the strange thing was that Veritas Cluster Server (We are using 4.1)was unable to mount the storage automatically! After reading the engine log file I found this error: “Unsupported filesystem!” wtf?

If you are an experienced linux user, you most probably know that the applications which run on linux are not dependent on the filesystem format, in other words you are free to use whatever filesystem you like. So my guess was that the guys at Symantec/Veritas Software don't like XFS.

As always I googled to find a solution but I failed to :-/ So my last change was to make VCS support my lovely filesystem. After greping for other supported filesystem names in /opt I found these configurations:

/opt/VRTSvcs/bin/Mount/functions.pl

my (@supported_fs) = ($default_fs, "ext2", "ext3", "nfs", "reiserfs");

/opt/VRTSvcs/bin/Mount/Mount.xml

            <attr_description>Type of file system.</attr_description>
            <possiblevalues>
                <value>vxfs</value>
                <value>ext2</value>
                <value>ext3</value>
                <value>nfs</value>
                <value>reiserfs</value>
            </possiblevalues>

So I edited both files to add “xfs”:

/opt/VRTSvcs/bin/Mount/functions.pl

my (@supported_fs) = ($default_fs, "ext2", "ext3", "nfs", "reiserfs", "xfs");

/opt/VRTSvcs/bin/Mount/Mount.xml

            <attr_description>Type of file system.</attr_description>
            <possiblevalues>
                <value>vxfs</value>
                <value>ext2</value>
                <value>ext3</value>
                <value>nfs</value>
                <value>reiserfs</value>
                <value>xfs</value>
            </possiblevalues>

Ta-da! Now everything works fine. :-)

Don't forget to update these files on all cluster nodes in the group!

2011/06/10 18:18 · Siavash Safi · 24 Comments · 1 Linkback

I'm not dead!, VCS, Veritas, Server, Cluster, XFS, Filesystem

Wive(-NG) Configuration

I wrote about Wive in the previous post. I'm going to write about the configuration in this one. But first I should tell you about Wive-NG which is the next generation firmware. I highly recommend upgrading to wive-ng. The upgrade can be done as I described it in the previous post (make sure to reset the device after that). The only difference is the default ip address which is set to: 10.200.200.249.

First you should connect to the router using ssh or any ssh client you like:

$ ssh root@10.200.200.249
root@10.200.200.249's password: 
::Wive-NG-0.2.21::RTL8186-REALTIME::
Base station firmware version
Enter 'menu' for config router
Sun, 26 Apr 2009 18:41:28 +0700
[Wive-NG@/]#

Note!

The default password is rtl8186, don't forget to change it.

Running menu will show you the configuration menu:

-=General menu=-
	
1) Boot 2)Interfaces 3)General 4)WPA 5)Stat 6)Scan 7)RSSI 8)ExtendedMenu
9) Change password 10) WiFi reset 11)Save 12)Reboot 13)Quit
	
Enter choice number:

Enter a number and the related configuration file will be opened using vi. The configuration files are all documented using comments.

Important!

Don't forget to save the configuration by entering 11 or all the settings will be lost after reboot!

It's not possible to describe the configuration in detail here since there are many ways to configure the router which depends on how you're going to use it.

You should know about basic linux networking in order to be able to do the configuration. If you don't you can ask in any linux forums and/or irc channel related to networking. Wive-NG has a wiki but unfortunately it's in russian, you can use google translate ;-)

If you have any problems/questions related to configuration, feel free to ask here :-)

2009/05/07 13:41 · Siavash Safi · 25 Comments

wive, linux, wireless, access point, config

Wive: a Free/OpenSource Firmware for rtl8186 Based Devices

If you've read my previous post about D-Link DWL-G700AP you should know about the problems. I finally bricked it by installing a wrong firmware. After searching for a flash/jtag solution I found the rtl8186 project which develops the Wive Firmware. A Free/OpenSource Firmware for rtl8186 based devices including DWL-G700AP. Unfortunately there's not enough documentation available, so I had to read the forum. After reading some posts and checking the device, I found out that it was not really bricked since the bootloader was still working (no jtag was needed) and it was possible to upload the firmware using the LAN interface. Here's how it's done:

Warning!

Uploading this firmware will cancel the warranty!

turn off the device (disconnect the power)
hold the reset button
turn on the device while you're holding the reset button
release the reset button after 3 seconds

The device is booted with 192.168.1.6 ip address assigned to it's LAN interface. Now we can upload the firmware (there are 2 revisions available, A and B, you can find out the hardware revision by looking at the bottom of the device):

# ifconfig eth0 192.168.1.1
# tftp 192.168.1.6
tftp> binary
tftp> put wive_rev_b.bin

Wait 1 minute…

you can access the device using ssh (yeah, it has ssh server now):

# ifconfig eth0 192.168.0.1
# ssh root@192.168.0.50

password is: rtl8186

You have full control now. Wive has many features and you can even use the device as a router (which is not possible with the original firmware)

I'll write about configuring and managing in the next post.

2009/03/12 19:06 · Siavash Safi · 13 Comments

wive, linux, wireless, access point

autotools based build system for xsd

One of the libraries used by audiosource is xsd. It's included in audiosource under xsd/ directory. After facing problems to build against xercesc 3.0.0 we decided to remove xsd from our source code and use it as an external lib. The original build system (used by xsd) is not standard and doesn't provide installation. (package maintainers don't like it and xsd is not included in distributions). So I ported xsd and it's dependencies to autotools based build system. You can find them on my Mercurial repositories.

Use this command to clone the repositories:

$ hg clone http://hg.siavashs.org/<repo>

replace <repo> with the repository name you want.

2009/03/09 19:07 · Siavash Safi · 8 Comments

xsd, autotools, audiosource, c++

Dvorak and Colemak Keyboard Layouts on Gentoo

I've recently tried both Dvorak and Colemak Keyboard layouts. They're both good but Colemak is better and easier to learn.

Dvorak is included in Gentoo by default but you should install the Colemak layout yourself.

download and extract the layout:

# wget http://colemak.com/pub/unix/colemak-1.0.tar.gz
# tar xzf colemak-1.0.tar.gz

install console keymap:

# cd colemak-1.0/linux_console
# cp colemak.iso15.kmap colemak.map && gzip colemak.map
# mkdir /usr/share/keymaps/colemak && mv colemak.map.gz /usr/share/keymaps/colemak/

install xorg symbol:

# cp colemak-1.0/xorg/colemak /usr/share/X11/xkb/symbols/

You can switch between console layouts using loadkeys:

# loadkeys colemak
Loading /usr/share/keymaps/i386/colemak/colemak.map.gz

or:

# loadkeys dvorak
Loading /usr/share/keymaps/i386/dvorak/dvorak.map.gz

to switch back to qwerty:

# loadkeys us
Loading /usr/share/keymaps/i386/qwerty/us.map.gz

for xorg you can use setxkbmap:

# setxkbmap colemak

or:

# setxkbmap dvorak

to switch back to qwerty:

# setxkbmap us

if you want the layouts to be set automatically:

for console edit /etc/conf.d/keymaps:

KEYMAP="colemak"

or:

KEYMAP="dvorak"

for xorg edit /etc/X11/xorg.conf:

Section "InputDevice"
    Identifier    "Keyboard"
    Driver        "evdev"
    Option        "Device"           "/dev/input/event2"
    Option        "CoreKeyboard"
    Option        "XkbLayout"        "us"
    Option        "XkbVariant"       "colemak"
EndSection

or:

    Option        "XkbVariant"       "dvorak"

You should add the proper layout in your desktop enviroment's(e.g. gnome/kde) settings too.

You can use dvorakng to learn Dvorak faster, for Colmake checkout this list.

I've also repositioned my laptop's keys too. You can print the layout on paper to use it as a reference(it's not possible with all keyboards since the keys vary in size/shape).

2009/02/13 23:08 · Siavash Safi · 94 Comments

keyboard, layout, colemak, dvorak

Older entries >>

Linkbacks

Discussion

Sergio, 2012/08/03 20:39

he had a guitar in the stiudo for when the painting wasn't quite coming together. Maybe he had some dry times, but he said he became a pretty darn good guitar player after awhile.I have a bass I like to fool around on (electric) and when I have good enough calluses on my fingering hand it's fun to attempt to play along with favorite CDs, but I find that often, when I finally got a good set of calluses going and can play for an hour or so, some important job will come along. For me painting and playing come from the same place, and painting pays the bills, may it continue, and before long my fingertips are once again soft, but hopefully I've made it up with whatever painting came along.I'm still trying to find a balance between the two. And there's music coming out of the stiudo 8-10 hours a day.

Kelly, 2012/08/04 01:46

@PG: Go for it. New sim versions are resealed from time to time. I picked up two 3G sims in March; I recently had to replace one of them and a yet-newer version was out.

Jerome, 2012/08/05 08:51

Yes, for illustrators, the 'act' is not part of our plibuc work. (In my case: thank god for that)Cello (or Gamba) is my favourite musical instrument.And Dvorak, a cellist himself I believe, wrote the most violent cello music I've ever heard.His sonata (opus 8) is my favourite music for the instrument.May buy a cello myself someday. When I'm retired.

Patel, 2012/08/05 08:54

laceration, your arguments are so wrong on so many lelves that I find it hard to respond. But I'll try. Firstly, most creative thinkers are creative because they see a problem in a completely different light. This doesn't give them unsound judgement, in fact its probably the reverse often their judgement is correct because they see what so many others do not. To say that Dvorak is a creative thinker because he rubbishes things like the mouse is strange to say the least. As for your belief that most of the readers of Jeff's blog are linux command line geeks , I'd say that you are completely wrong. Jeff's blog is also aggregated on Planet Gnome. I'm not sure you are aware of but Gnome has a high focus on GUI applications and usability, with very little command line involved. I've also found that a high majority of Ubuntu Linux folks chose Ubuntu because it is easy to use and probably use the GUI more than the CLI. I'd say that if anything they would find the question that Dvorak posed ( why would ANYONE need a mouse?!? ) to be as ridiculous as Jeff highlighted.

Aweera, 2012/08/05 09:24

官网这样介绍: Clonezilla saves and restores only used bkcols in the harddisk. This increases the clone efficiency.如果只是备份有数据的block, 那应该会比较高效. 但是也有个疑问, 看似空闲的空间也许是有数据的, 或者说有些文件被删除了, 可能数据还保存着没被清除掉, 只是改变了索引. Clonezilla如果能正常判断这一点, 就不会克隆多余的数据吧@_@

Osc, 2012/10/16 04:58

I don't remember extlcay how much modern typewriters were different from keyboards, but it wasn't that much.However, my Dad had a really, really old typewriter that was completely mechanical not electric at all and it would put holes in anything but card-stock. I'm not 100% certain how different the spacing was between keys, but there was definitely vertical spacing between the rows.Could that have had some kind of impact on Dvorak's estimates? Even still, 20 miles does seem a bit of a stretch.

Shalaka, 2012/10/19 13:57

Am I alone in thinking that any keainyrdbog class or typing practice is generally a waste of time? Nobody has taught anyone how to keyboard on a phone but kids text much quicker than a lot of adults type. Give them a computer and a keyboard, they'll figure the typing part out. Just seems to be so many more things they could be doing than practicing a skill they'll have mastered without these games.

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