Archive for November, 2007

Is ZFS ready for primetime?

Over the course of the past four months, I have encountered a couple of ZFS bugs that led to corrupt pools. One of the bugs hit this weekend, and resulted in us having to recover the pool from a snapshot on our storage array (this experience has made me truly appreciate the 3par’s snapshot capability). […]

Getting patches to install on Solaris 10 systems

There have been a number of threads in zones-discuss relating to Solaris 10 patching. Most of the feedback came from folks who ran into issues related to delayed activation patching, or patching zones that run on ZFS file system. Running zones on ZFS file systems is not currently supported by Sun, but it appears installing […]

Monitoring system utilization on Linux hosts

I am always on the look out for tools to analyze system performance. One nifty tool I recently came across is atop, which is an advanced system performance monitor for Linux. When atop is run, it displays overall system utilization in the header, and per-process CPU, memory, network or disk utilization information in the body […]

Viewing SMBIOS data

The SMBIOS specification allows applications and operating systems to retrieve and store hardware configuration settings. Retrieving hardware settings from a shell prompt can be extremely useful, since rebooting to view a given BIOS menu requires the machine to be taken offline. If you happen to be running Solaris 10 or Nevada, you can run the […]

Getting to know the Solaris iSCSI stack article

I just posted my article getting to know the Solaris iSCSI stack from the August ‘07 issue of SysAdmin magazine to my website. If you are looking to deploy Solaris iSCSI solutions in your environment, you might find the article useful.

Simplifying Apache chroot creation with mod_chroot

Building and maintaining Apache chroot environments can be a royal pain. Creating a chroot environment for Apache requires you to first identify all the libraries and applications that are required to run the httpd processes. Once you identify the dependencies, you need to create a chroot environment that contains these files. After you successfully create […]

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