Monthly Archives: October 2008

How to convert and mount daa format files with wine

Downloaded a bunch of c++ books but the files were in DAA format. Found a neat utility called daa2iso developed by some dude, but it didn’t work. The only alternative at the moment was PowerISO, a windows tool. I thought it’s time to give wine a shot. And it worked brilliantly too.

  • Installed wine (didn’t have it yet)
  • Ran: wine PowerISO38.exe. A window popped up, looking like a regular windows installation, went along with it, installed it in “Program Files”, not even knowing what that means in wine. The installer complained at the end, but decided to ignore for now.
  • Ran: wine ~/.wine/drive_c/Program Files/PowerISO/PowerISO.exe and behold, it just worked. Located the daa file and extracted it into my usual books folder.
  • Felt like it’s time for a different kind of wine, to celebrate 😉

My terabyte raid1

My raid1 array with two 120G disks was getting filled up lately, so when usage reached 90% I decided it’s time to upgrade. To my great surprise prices have gone much lower than I expected: I got two 1T disks for the same price as the old 120G disks — $100 apiece.

It’s been a long time since I setup my raid1 array so I had to read up on man mdadm and mdadm --help.

  • Created a full backup of the old disks:
    cd /storage; tar cvpf disk200/raid1.tar raid1
  • Powered down the machine, replaced the disks, checked in BIOS they are recognized correctly.
  • Started up the machine, created a single primary partition on the two new disks with cfdisk, set the filesystem size to 1000G. This left a few hundred MB free space at the end of the disk, a safe thing to do in my experience.
  • Created the raid1 md device:
    mdadm --create /dev/md0 -l1 -n2 /dev/sdc1 /dev/sde1
  • The resyncing of two 1T disks takes time. An easy way to monitor the progress is with watch cat /proc/mdstat. It was more convenient for me to have a notification email sent to my mobile phone with while cat /proc/mdstat | grep resync; do sleep 60; done; cat /proc/mdstat | mail -s mdstat titan2x@mysupersecretmobile.com
  • Once the resync is done I created filesystem on it:
    mkfs.ext3 /dev/md0
  • In /etc/fstab filesystems are identified by UUID, not by traditional names like /dev/md0. To follow this new practice I updated the UUID in /etc/fstab for the partition according to the output of blkid.
  • mount -a complained about /dev/disk/by-uuid/... missing. This is fixed by restarting udev:
    /etc/init.d/udev restart
  • Mounted the partition with mount -a, and restored the files:
    cd /storage; tar xvpf disk200/raid1.tar

Installing Plone in hardy

I’ve installed Plone in Ubuntu dozens of times. Ever since hoary (possibly even from warty), this was a matter of apt-get install plone-site. Something is broken in hardy because this step doesn’t create a Zope instance (the container instance for Plone) but it should. That is, the directories /var/lib/zope2.9/instance/ and /var/lib/zope2.10/instance/ were both empty, so when starting zope, it would complain about no instances, and obviously Zope cannot work without files. I could fix this and get going with the following steps.

dzhandle -z2.9 make-instance plone-site -m manual
dzhandle -z2.9 add-product plone-site CMFPlone
/etc/init.d/zope2.9 restart

The above steps will generate a brand new Zope instance in /var/lib/zope2.9/instance/plone-site. The configuration file for the instance will be in /etc/zope2.9/plone-site/zope.conf, you might want to change HTTPPORT from 9673 to 8081 (the Ubuntu default).

How to archive and restore with cpio

Create archive:
1. cd to the directory that you want to archive
2. find . -xdev -print0 | cpio -oa0V | gzip > path_to_save.cpio.gz

Restore from archive:
1. cd to the directory into which you want to restore the files
2. gzip -cd path_to_save.cpio.gz | cpio -imV

See? Easy as abc 😉

How to get the mouse wheel working in vmware

Sometimes the mouse wheel just doesn’t work for me in vmware. Then I remembered I used to have to add some options for that in the X11 configuration file about 5-10 years ago. In modern native installations no such tricks should be needed, but I guess things are different when you run in vmware. So in case you ever need, the magic lines to put in /etc/X11/xorg.conf :

Option “Protocol” “IMPS/2”
Option “ZAxisMapping” “4 5”