Aug

Dinner at Pizzaiolo’s

Jonathan on August 24th, 2008

Last month, I had the opportunity to have dinner at Pizzaiolo’s Wood Fired Pizza in Oakland with my friend Jeff Varasano. For those of you who don’t know Jeff, he has become somewhat infamous for reverse-engineering Patsy’s pizza and has a single-page website with all kinds of details about how to make great pizza. He was recently featured in the NYTimes Dining and Wine section. His hometown paper, the Atlanta Journal-Constitution also published an article about him.

In addition to my brother and me, Jeff had invited another dozen or so pizza afficionados from the Bay Area. Many of the people at the table had been making pizza using Jeff’s recipe for several years. They had interesting stories to tell of how they went about making pizza at home, such as by using a modified bbq grill.

We enjoyed the pizza at Pizzaiolo very much. Jeff ordered many of the pizzas on the menu and we tried pizzas with an assortment of different toppings. As usual with neopolitan pizza, my favorite turned out to be the margherita pizza. As we were eating our way through our fifth or six piece, owner Charlie Hallowell came over, introduced himself to the table, and chatted with Jeff. Apparently Charlie is aware of Jeff’s pizza page and wanted to make sure that Jeff knew him too.

Later in the evening, the discussion turned to other great pizza places in the bay area. The person next to me mentioned that he thought the best pizza in San Francisco is a place named Pizzeria Delfina, located on 18th street in the Mission. I’m planning on checking it out the next time that I go to the city.

Update: Jeff just sent me an email after seeing this blog and told me to skip Delfina.

Tags: margherita, Pizza, pizzaiolo, varasano

Pizza No comments yet, be the first »

Aug

24

Building an rdiff-backup RPM for CentOS-5.2

Jonathan on August 24th, 2008

RHEL/CentOS does not ship with rdiff-backup, and the existing well-known RPM sites only have really old versions. Even the version of rdiff-backup on the Red Hat extras (EPEL) site was last updated over a year ago (July 2007). These instructions work for rdiff-backup-1.2.0 and librsync-0.9.7.

Here are the steps to get it built:

1. Set up your rpmbuild directories:

  $ mkdir -p ~/rpmbuild/BUILD ~/rpmbuild/RPMS  ~/rpmbuild/RPMS/i386
  $ mkdir -p ~/rpmbuild/SOURCES ~/rpmbuild/SPECS ~/rpmbuild/SRPMS
  $ echo "%_topdir $HOME/rpmbuild" > ~/.rpmmacros

2. Build librsync

2.1 Download latest librsync source code
http://librsync.sourceforge.net/

2.2 Build an rpm from librsync source code. The current version (0.9.7, released 2004-10-10) has a few problems which cause the standard rpmbuild command to fail. We’ll need to fix the librsync.spec file before building an rpm.

2.3 Fix the librsync.spec file.

  $ tar zxf /tmp/librsync-0.9.7.tar.gz
  $ vi librsync-0.9.7/librsync.spec

a) Change the “Version:” tag value to 0.9.7 (it’s accidentally set at 0.9.6)
b) Change the “Copyright:” tag name to “License:”
c) Change the “Source:” tag from it’s existing value:

http://prdownloads.sourceforge.net/librsync/librsync-0.9.6.tar.gz?download”

to the following:

http://prdownloads.sourceforge.net/librsync/librsync-0.9.7.tar.gz

2.3.1 I found some information that claimed if you are running selinux, then you must add the “–enable-shared” line to the configure script:

  ./configure --prefix=/usr --mandir=/usr/share/man/ --enable-shared

For details, see this post:
http://www.mail-archive.com/rdiff-backup-users@nongnu.org/msg03171.html

However, when adding that line, I wasn’t able to get the rpmbuild to complete. The error that I received was:

  Checking for unpackaged file(s): /usr/lib/rpm/check-files /var/tmp/librsync-0.9.7-root
  error: Installed (but unpackaged) file(s) found:
      /usr/lib/librsync.so
      /usr/lib/librsync.so.1
      /usr/lib/librsync.so.1.0.2

I had to give us on this approach and elected to try a different workaround to make rdiff-backup run on selinux. See Instruction 5 for more info.

2.4 Move the old librsync tarball out of the way and tar up the modified one.

  $ mv /tmp/librsync-0.9.7.tar.gz /tmp/librsync-0.9.7.tar.gz.0
  $ tar zcf /tmp/librsync-0.9.7.tar.gz librsync-0.9.7/

2.5 Build the rpm file from the modified tarball.

  $ rpmbuild -ta /tmp/librsync-0.9.7.tar.gz

2.6 Install the librsync and librsync-devel rpms

  $ sudo rpm -ivh ~/rpmbuild/RPMS/i386/librsync-0.9.7-1.i386.rpm
  $ sudo rpm -ivh ~/rpmbuild/RPMS/i386/librsync-devel-0.9.7-1.i386.rpm

3. Build rdiff-backup

3.1 Download latest rdiff-backup source code (1.2.0 released 2008-07-27)
http://www.nongnu.org/rdiff-backup/

3.2 Build an rpm from rdiff-backup source code.

  $ rpmbuild -ta /tmp/rdiff-backup-1.2.0.tar.gz

3.3 Install the rdiff-backup rpm

  $ sudo rpm -ivh ~/rpmbuild/RPMS/i386/rdiff-backup-1.2.0-1.i386.rpm

4. Clean up work. Optionally, you can remove your rpmbuild directory since you don’t need it anymore.

  $ rm -fr ~/rpmbuild/ ~/.rpmmacros

5. If you are running selinux, you need to fix the selinux perms before running rdiff-backup. This is the workaround I mentioned earlier since I couldn’t get librsync to compile as described in step 2.3.1.

  $ sudo chcon -t textrel_shlib_t /usr/lib/python2.4/site-packages/rdiff_backup/_librsync.so

Tags: centos, rdiff-backup, rpm

Linux No comments yet, be the first »

Nov

25

Changes, changes

Jonathan on November 25th, 2007

Time moves quickly when changes occur. I’ve had plenty of changes recently to keep me busy.

The most exciting news is that my wife and I have added a new member to our family! I know it’s cliche to say that having a kid will change your life, but it is definitely true in ways I didn’t anticipate. Luckily for us, he’s made it very easy on us. Ever since the moment he was born, he’s been a joy to be around. I know it is anathema to speak of it, but we’re even getting plenty of sleep.

Daniel Smiling

The other news is that I’ve returned to the software engineering world. I just started a job at Yahoo! in Santa Clara and will be back in the world of enterprise Java. After spending several years branching out and learning about the mobile space (Motorola) and open source community management (Solid), It will be fun to return to my roots.

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Aug

27

solidDB for MySQL 5.0.45-0077 is available

admin on August 27th, 2007

Solid has released 5.0.45-0077. New features include full support for prefix indexes and support for multiple NULLs on unique indexes. This release also has a number of bug fixes. For the full detailed list of bug fixes and enhancements, please see the ChangeLog. Check it out at http://dev.soliddb.com/download

Database, MySQL, solidDB for MySQL No comments yet, be the first »

Aug

9

The Importance of Being Earnest

Jonathan on August 9th, 2007

By now, word has gotten around that MySQL has made some more changes to their process around MySQL Community Server. The changes primarily focus on:

acceptance of community contributions (5.0 and 5.1 are now locked for contributions, so any contributions won’t be available until 5.2 or later)
release schedule of community server (”Mature GA”, meaning 5.0, will have approximately 4 source builds per year and 2 binary builds; new GA, meaning 5.1, will have a binary build once per month)

These refinements of the community server [process] are detailed in Kaj ArnÃ¶’s blog. Not everyone is happy about the new plan for acceptance of community contributions, because it means that community enhancements have to wait a long time to see the light of day. Jeremy Cole has talked about the frustrations that this causes and calls the Enterprise/Community split a failure. These refinements are interesting are definitely worthy of discussion, but I’ll leave that aside for another time.

What’s wrapped up inside of the announcement about “Refining Community Server” is something not related to Community Server at all: “The current Enterprise source tarballs will be removed from ftp.mysql.com.” Perhaps it’s just me, but it feels a lot like what often happens in political bills, where a politician tries to add 4 good things and squeeze in one bad thing in the same bill (download movies, movies online). They are either hoping that no one will notice, or that perhaps it’s an easier pill to take when a little sugar is applied. Kaj responded to Jeremy with the expected response of “not much changed” and “it’s for the better anyway” message. But it’s worth taking a closer look.

Placing the source tarballs behind a closed door doesn’t keep it closed with the GPL. Everyone knows (and Kaj acknowledges) that the GPL guarantees the right of any person who receives a binary to obtain and re-distribute the source tarballs to the world. So what’s the big deal about hiding Enterprise source tarballs behind a password-protected site that only customers can access?

It’s about the importance of being earnest in what you do. Being an open source company is about a lot more than just slapping a GPL license on your software and handing it out. It’s about building a relationship with the community that is using, playing, testing, and improving your software. As anyone who is married knows well, this can only be done through ongoing, continual trust and transparency between the two parties. Trust is built by being dependable, and by telling the other person things that sound honest and real. Trust is improved by transparency, which is opening yourself to the other person. Adding an artificial means of inconvenience to the community in obtaining bits does nothing to help customers and only reduces transparency as seen by the community.

MySQL has a goal of of positioning their software as: â€œCommunity Server for community users, Enterprise Server for paying usersâ€. This makes sense from a marketing and sales perspective, and I have no argument with it at that level. After all, companies deserve to make money for their efforts, and customers need to understand what they are paying for when they buy Enterprise Server. They get a great deal for a cheap cost when they buy a license, because it includes all kinds of services: updates, technical alerts, technical support, troubleshooting, assistance with tuning, and many other services. They are also getting cool features and stability which came as a direct result of feedback from the community. Most of all, customers are paying for the comfort in knowing they have an experienced team to call and help when they have a problem. But customers aren’t paying for bits. The bits are Free Software and infinitely re-distributable, so there isn’t any money to be made by trying to make bits appear part of the sale.

From a technical standpoint, dividing source code based on “paying customers” and “community” simply doesn’t make any sense. Customers want source code typically for one reason: “just in case” (in case your company disappears). Community wants source code to learn from, experiment with, play with, improve, fix, argue about, comment on, and many other things. The division of code drives down the quality of the Enterprise Ed