Discovering OS Bugs and Using SnapshotsDiscovering OS Bugs and Using Snapshots
I’m running Debian/Unstable on an EeePC 701, I’ve got an SD card for /home etc but the root filesystem is on the internal 4G flash storage which doesn’t have much[...]
Category: Linux
Ext4 and Debian/LennyExt4 and Debian/Lenny
I want to use the Ext4 filesystem on Xen DomUs. The reason for this is that the problem of fsck times on ext4 (as described in my previous post about[...]
Ext4 and RHEL5/CentOS5Ext4 and RHEL5/CentOS5
I have just noticed that Red Hat added Ext4 support to RHEL-5 in kernel 2.6.18-110.el5. They also added a new package named e4fsprogs (a break from the e2fsprogs name that[...]
The Transition to Ext4The Transition to Ext4
I’ve been investigating the Ext4 filesystem [1]. The main factor that is driving me to Ext4 at the moment is fsck times. I have some systems running Ext3 on large[...]
Finding Thread-unsafe CodeFinding Thread-unsafe Code
One problem that I have had on a number of occasions when developing Unix software is libraries that use non-reentrant code which are called from threaded programs. For example if[...]
Per-process Namespaces – pam-namespacePer-process Namespaces – pam-namespace
Mike writes about his work in using namespaces on Linux [1]. In 2006 I presented a paper titled “Polyinstantiation of directories in an SE Linux system” about this at the[...]
Things you can do for your LUGThings you can do for your LUG
A Linux Users Group like most volunteer organisations will often have a small portion of the membership making most of the contributions. I believe that every LUG has many people[...]
Debugging as a Demonstration SportDebugging as a Demonstration Sport
I was watching So You Think You Can Dance [1] and thinking about the benefits that it provides to the dancing industry. The increase in public appreciation for the sport[...]
Swapping to a Floppy DiskSwapping to a Floppy Disk
In the mid 90’s I was part-owner of a small ISP. We had given out Trumpet Winsock [1] to a large number of customers and couldn’t convert them to anything[...]
A Basic IPVS ConfigurationA Basic IPVS Configuration
I have just configured IPVS on a Xen server for load balancing between multiple virtual hosts. The benefit is not load balancing but management. With two virtual machines providing a[...]