Aneesh Kumar K.V

Migrating from livejournal to blogger.

2007-02-01T14:45:44Z

I migrated all my journal entries from livejournal to blogger. The main reason for migrating was the ability to add multiple widgets to the blog page. So this would be my last livejournal entry. The new blog address is http://aneesh-kumar.blogspot.com/

Last day at HP

2007-01-22T06:50:19Z

Last Friday (19th Jan 2007) was my last day at HP. After 6 years 11 months and 19 days stay at HP, I felt a little bit awkward to say good bye. During this period I learnt quiet a lot. I was lucky to have a lot of nice friends. I also met my life partner there. A big thanks to HP for giving me such a wonderful time.

I am moving to IBM. I will be joining the Linux technology center.

patches updated to 2.6.20-rc1

2006-12-31T07:30:30Z

I have updated LKCF patches to 2.6.20-rc1 kernel. gitweb link

Redhat Developer Day

2006-10-19T03:34:11Z

I was at Redhat Developer Day yesterday. Quiet a good event. Learnt about 108 and OLPC. I was there as the HP speaker. Being a developer day we decided to present developer oriented topics and this resulted in me presenting about Linux kernel Cluster Framework. I guess the presentation went fine.

LKCF selected for FOSS.IN 2006

2006-10-16T04:14:57Z

I haven't got any mail notification yet. But i can see it on the website here.

FOSS.IN/2006

2006-10-05T11:39:50Z

Submitted a talk on Linux kernel cluster framework (LKCF. Hopefully it will get selected. This is the first time i am submitting a talk for FOSS.IN.

Linux kernel Cluster Framework 0.2

2006-09-16T05:19:34Z

This is the 0.2 release of Linux kernel Cluster Framework.

What is LKCF:
-----------
LKCF's aim is to provide a transport independent cluster communication
framework within the kernel. This enables the developers to write
kernel based cluster services without being worried about
communication transport. It also support RPC style programming. That
means to write kernel service one need to write the service definition
file (.svc>) and the implementation API. LKCF framework will
generate all the registration routines and the marshaling code. Also
it takes care of forwarding the SIGNALs across different nodes.The
particular service can be called from any node specifying the node at
which this particular service need to be executed. All the underlying
management interface is taken care by the LKCF.

What transport are supported as of today:
---------------------------------------
IPV4
Infiniband verbs/RDMA.

Project Documentation:
---------------------
http://ci-linux.sourceforge.net/

Project git repository:
---------------------------
http://git.openssi.org/~kvaneesh/gitweb.cgi?p=ci-to-linus.git;a=summary

The patches can be found at
http://git.openssi.org/~kvaneesh/ics_patches/lkcf-0.2/

and include

0001-Internode-communication-subsystem-for-Linux.txt
0002-ICS-over-Infiniband-verbs-work-in-progress.txt
0003-Token-facility-needed-for-cluster-based-synchronization.txt
0004-A-simple-test-case-for-ICS.txt

The patches are on top of git SHA1
ef7d1b244fa6c94fb76d5f787b8629df64ea4046 of the linus tree.

LKCF Infiniband support

2006-09-08T03:59:59Z

I have merged the work stan smith was doing with Infiniband and OpenSSI. I have pushed the changes here with changes to make it work with LKCF. I also tested the changes with a two node cluster with infiniband interconnect and it seems to work fine.

Linux Kernel Cluster Framework

2006-09-08T03:56:36Z

This is nothing but the CI rework i have been doing. The code has changed in such a way that it is not possible to build CI service module on the code base that i have without modification. So i decided to rename the work to LKCF.

Ubuntu's Upstart

2006-08-27T06:51:06Z

I really liked this.

"upstart is a replacement for the init daemon, the process spawned by the kernel that is responsible for starting, supervising and stopping all other processes on the system."

"upstart is an event-based init daemon; events generated by the system cause jobs to be started and running jobs to be stopped. Events can include things such as:

* the system has started,

* the root filesystem is now writable,

* a block device has been added to the system,

* a filesystem has been mounted,

* at a certain time or repeated time period,

* another job has begun running or has finished,

* a file on the disk has been modified,

* there are files in a queue directory,

* a network device has been detected,

* the default route has been added or removed."

http://www.netsplit.com/blog/work/canonical/upstart.html

CI 0.1 released!!

2006-08-26T17:41:28Z

Today I released the 0.1 version of ICS. You can find the details here. Now from here there is quiet a lot of things that we can do such as:

a) Add another transport. sctp, tipc, infiniband verbs etc.
c) Get other cluster projects to start using it.

From OpenSSI code i am trying to pull CFS code and other cluster wide SYSV IPC code. Once we get this done we will have clusterwide shared memory.

gitweb enhancements

2006-08-22T11:58:36Z

I have added support for urls and snapshots to gitweb. Both these changes are right now in next branch of git repository. The url support helps in finding out the the url that need to be used when you do a git-clone. The snapshot support helps you in getting a tar.gz image of the repository files at any commit point. This should help if you want to download the code without looking at the history. Along with that did some nice cleanups making blame and snapshot a feature which can be enabled/disabled via GITWEB_CONFIG and also project specific config.

This should give you the details.

http://git.openssi.org/~kvaneesh/gitweb.cgi?p=ci-to-linus.git;a=summary

Another milestone with CI

2006-08-21T15:47:44Z

Now that i have CI done i am looking at progressing with different components of OpenSSI cluster as below

a) Get the token based synchronization working
b) Get CFS working
c) Get Clusterwide name server working
d) Get message queue and semaphore working
e) Get clusterwide shared memory working.

I have done the first cut of cleanup with respect to token code and did a git push. You can find them here http://git.openssi.org/~kvaneesh/gitweb.cgi?p=ci-to-linus.git;a=summary. Follow the 2.6.18-rc1-ci-to-linus branch.

BTW it is quiet a lot of work to get this done in free time. So in case you would like to help me let me know.

Cluster configuration via configfs

2006-06-28T04:18:28Z

I submitted all the changes required to build a CI cluster via configfs. This is really important in the sense it gets us on fast track in having a proper cluster manager in user space. I am right now looking at CMAN. With the current code base, one can configure the cluster with the below steps

ifconfig eth0 192.168.2.15 netmask 255.255.255.0
mount -t configfs none /config
mkdir /config/ics/node2
echo -n "192.168.2.15" > /config/ics/node2/icsinfo
echo -n "2" > /config/ics/node2/nodenum
ln -s /config/ics/node2 /config/ics/this_node
./cluster_config --preroot
./cluster_config --postroot
echo -n "NODE_UP" > /config/ics/node2/status
echo -n "NODE_READY" > /config/ics/node2/status

To inform regarding other nodes status
mkdir /config/ics/node3
echo -n "192.168.2.16" > /config/ics/node3/icsinfo
echo -n "3" > /config/ics/node3/nodenum
echo -n "NODE_CONFIG" > /config/ics/node3/status
echo -n "NODE_UP" > /config/ics/node3/status
echo -n "NODE_READY" > /config/ics/node3/status

Reworked Cluster Infrastructure code

2006-06-11T10:29:09Z

I have been working on CI code preparing it for submitting upstream. You can check the work here. Today i was able to run a simple test case of invoking a service on the second node. Right now the membership is
configured from the user space via system call. I need to convert it to use configfs and CMAN.

git.openssi.org

2006-05-16T10:05:35Z

We now have git.openssi.org

here

CI - A generic framework for internode cluster communication in Linux

2006-05-01T05:58:50Z

It is quiet a long time I updated my blog. That is mainly because I was busy cleaning up CI. Cluster infrastructure is an opensource project from HP. It implements a transport independent method of communicating across different nodes in a cluster. It also makes writing a cluster service extremly easy. Take a look at the documentation here.

The reason for working on CI code is to get it merged with the vanilla Linux kernel (Linus kernel tree). Linux currently lacks a framework for writing cluster kernel services. Take a look at Oracle's OCFS or Redhat GFS. Both use their own mechanism for communicating to other nodes in a cluster. OCFs use TCP and GFS use sctp. I wanted to continue the process management work ( cluster proc ) done as a part of OpenSSI project and was looking at different ways of writing cluster services. That made me to look at CI code. The idea right now is to remove the kernel based cluster membership code and use Redhat CMAN.

You should be able to find the status at here. I haven't pushed the code base yet. I have removed the CLMS code base and did quiet a lot of cleanups. Once i get the code compiled I will push it to radian. The second stage will be CMAN integration. Once i get CMAN integrated i would like to add one more lowlevel transport for CI. As a part of OpenSSI project Stan Smith had CI over Infiniband code base. I guess we didn't got it submitted to CVS. I will also try to get that integrated as well. I am also looking at having CI over TIPC . I know it is quiet a lot of work. So if anybody is interested let me know.

True!!

2006-03-09T08:19:52Z

After reading this

"Concentration
It's maybe a little fashionable to use terms like "information overload" and that all our technology is making us less productive. I'm starting to buy into this theory a little more though. I'm having a lot of trouble keeping myself focused on any one task for an extended period of time. I constantly jump between task A to task B to check email C, making a little progress here and there, but I think I'm hurting myself with all these context switches. I can't seem to stop myself anytime I have to wait for something (even very briefly), my focus switches to something else.

The most problems are at work. Now I'm fairly sure the environment has a lot to do with it. It's an open concept type, with a few cubicle walls here and there. People are constantly interrupting me with questions and random conversations can break out frequently. For the most part I really like these aspects, but it can be very hard to concentrate on a task. Home isn't much better though. I have trouble just concentrating on one task, I almost always have a movie or TV going at the same time, and I can't seem to turn it off."

more..

I found myself saying "same here" ( :( )

Git repository for OpenSSI

2006-03-06T11:57:50Z

Last few weeks i was trying to move the OpenSSI code from CVS to git. With OpenSSI we have a complicated tagging which even made viewcvs stop working. So my attempt to convert OpenSSI CVS to git using different git import export tools didn't work. So i ended up dropping all the code history and starting fresh with the 1.9.1 release. That means in the repository i have the base version of different packages and their respective openssi version as of 1.9.1 release. You can see the result of the work here

This may not be the final repository so if you are seriously working on OpenSSI code you should not base your development against these repositories. But I would very much like to get feedback regarding what others think of the current layout.

switching to bogofilter from spamassasin

2006-03-02T08:36:13Z

Using network manager for managing network with my laptop also means a mostly empty /etc/network/interfaces for me. This also resulted in spamd not starting properly. This made me look for other alternatives. I also had a feeling that spamassasin is too heavy for my usage. I decided to try bogofilter. Till now it is all working fine.

gitview 0.7 released

2006-02-25T07:22:29Z

Download from here

Attaching below the change log
--------------------------------------

commit 1509bd9e69b916ca7f04a89fc03662e03e2ba312
Author: Aneesh Kumar K.V <aneesh.kumar@gmail.com>
Date: Fri Feb 24 21:57:51 2006 +0530

gitview: Fix the graph display .

This fix all the known issue with the graph display
The bug need to be explained graphically

|
a
This line need not be there ---->| \
b |
| /
c

c is parent of a and all a,b and c are placed on the same line and b is child of c
With my last checkin I added a seperate line to indicate that a is
connected to c. But then we had the line connecting a and b which should
not be ther. This changes fixes the same bug

Signed-off-by: Aneesh Kumar K.V <aneesh.kumar@gmail.com>
Signed-off-by: Junio C Hamano <junkio@cox.net>

commit 9e4f522da7da8bf5f9018927c82b12e6b02b9058
Author: Aneesh Kumar K.V <aneesh.kumar@gmail.com>
Date: Fri Feb 24 21:49:54 2006 +0530

gitview: Code cleanup

Rearrange the code little bit so that it is easier to read

Signed-off-by: Aneesh Kumar K.V <aneesh.kumar@gmail.com>
Signed-off-by: Junio C Hamano <junkio@cox.net>

commit 20d23f554d6cd40ffa0d41ccc9416bca867667e0
Author: Aneesh Kumar <aneesh.kumar@gmail.com>
Date: Fri Feb 24 14:08:35 2006 +0530

gitview: Bump the rev

Make the 0.7 release

Signed-off-by: Aneesh Kumar K.V <aneesh.kumar@gmail.com>
Signed-off-by: Junio C Hamano <junkio@cox.net>

commit 8b42f5ae545d494463e72430fd81a0c0c558c881
Author: Aneesh Kumar <aneesh.kumar@gmail.com>
Date: Fri Feb 24 14:02:32 2006 +0530

gitview: Fix DeprecationWarning

DeprecationWarning: integer argument expected, got float

Signed-off-by: Aneesh Kumar K.V <aneesh.kumar@gmail.com>
Signed-off-by: Junio C Hamano <junkio@cox.net>

commit 3fe5489a2550118e0eb3f90e348cb78afeeb61e0
Author: Aneesh Kumar K.V <aneesh.kumar@gmail.com>
Date: Fri Feb 24 00:59:42 2006 +0530

gitview: Display the lines joining commit nodes clearly.

Since i wanted to limit the graph box size i was resetting
the window after an index of 5. This result in line joining
commit nodes to pass over nodes which are not related. The
changes fixes the same

Signed-off-by: Aneesh Kumar K.V <aneesh.kumar@gmail.com>
Signed-off-by: Junio C Hamano <junkio@cox.net>

commit d27d5b3c5b97ca30dfc5c448dc8cdae914131051
Author: Junio C Hamano <junkio@cox.net>
Date: Wed Feb 22 03:47:20 2006 -0800

gitview: ls-remote invocation shellquote safety.

This will allow you to point GIT_DIR at directories with funny names.

Signed-off-by: Junio C Hamano <junkio@cox.net>

commit d800795613a710fb18353af53730e75185861f41
Author: aneesh.kumar@gmail.com <aneesh.kumar@gmail.com>
Date: Tue Feb 21 16:00:10 2006 +0530

gitview: Use monospace font to draw the branch and tag name

This patch address the below:
Use monospace font to draw branch and tag name
set the font size to 13.
Make the graph column resizable. This helps to accommodate large tag names

Signed-off-by: Aneesh Kumar K.V <aneesh.kumar@gmail.com>
Signed-off-by: Junio C Hamano <junkio@cox.net>

commit 5301eee92ceb1c349ea8090a4d8aa3aa70c4abed
Author: aneesh.kumar@gmail.com <aneesh.kumar@gmail.com>
Date: Tue Feb 21 16:00:04 2006 +0530

gitview: Read tag and branch information using git ls-remote

This fix the below bug

Junio C Hamano <junkio@cox.net> writes:

>
> It does not work in my repository, since you do not seem to
> handle branch and tag names with slashes in them. All of my
> topic branches live in directories with two-letter names
> (e.g. ak/gitview).

Signed-off-by: Aneesh Kumar K.V <aneesh.kumar@gmail.com>
Signed-off-by: Junio C Hamano <junkio@cox.net>

commit c4d133a2b8501f0aded93fea147f0950db076ae1
Author: Aneesh Kumar K.V <aneesh.kumar@gmail.com>
Date: Sat Feb 18 13:54:50 2006 +0530

gitview: typofix

Signed-off-by: Aneesh Kumar K.V <aneesh.kumar@gmail.com>

commit 020e3c1ee6924edbcf61b6e401058fa06ddbd406
Author: Aneesh Kumar K.V <aneesh.kumar@gmail.com>
Date: Fri Feb 17 18:18:36 2006 +0530

Add a README for gitview

Signed-off-by: Junio C Hamano <junkio@cox.net>

commit 8cb711c8a5f98c1556b320114d7cc65e498ee2ae
Author: Aneesh Kumar <aneesh.kumar@gmail.com>
Date: Fri Feb 17 02:10:31 2006 -0800

Add contrib/gitview from Aneesh.

Signed-off-by: Junio C Hamano <junkio@cox.net>

gitview now part of git project

2006-02-17T12:09:28Z

You can find it here here

Add support for saving patches

2006-02-14T04:41:32Z

With this you can save the changes by following the parent or child link in the middle panel.

gitview 0.5

2006-02-11T06:16:42Z

Released a new version of gitview. The change log is attached below. gitview can be downloaded from sf.net/projects/gitview

commit 1dffd51311b6495adddcc1ff8682a61ba9209ff1
Author: Aneesh Kumar K.V <aneesh.kumar@gmail.com>
Date: Tue Feb 7 10:22:03 2006 +0530

Support for displaying branch names and tag names

commit 769c32fb71e5c3a2540ac9acab556d563d3984ee
Author: Aneesh Kumar K.V <aneesh.kumar@gmail.com>
Date: Mon Feb 6 10:18:41 2006 +0530

use the new --always flag with git diff-tree

Add branch and tag name display support

2006-02-07T08:00:44Z