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Running Systems

(and me chasing them)

Running Systems
Running Systems
(and me chasing them)

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Reduce traverse time of large directory trees on Linux
Disk Storage | Linux

Reduce traverse time of large directory trees on Linux

Byetzion 14/12/202127/01/2023

Every Linux admin is familiar with the long time running through a large directory tree (with hundred of thousands of files and more) can take. Most are aware that if you re-run the same run-through, it will be shorter. This is caused by a short-valid filesystem cache, where the memory is allocated to other tasks,…

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Disk Storage | Linux

dm-multipath and loss of all paths

Byetzion 13/05/2008

dm-multipath is a great tool. Its abilities were proven to me on many occasions, and I’m sure I’m not the only one. NetApp, for example, use it. HP use it as well (a slightly modified version, and still), and it works. A problem I have encountered is as follow – if a single path fails,…

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Clusters | Disk Storage | Linux

Single-Node Linux Heartbeat Cluster with DRBD on Centos

Byetzion 23/10/2006

The trick is simple, and many of those who deal with HA cluster get at least once to such a setup – have HA cluster without HA. Yep. Single node, just to make sure you know how to get this system to play. I have just completed it with Linux Heartbeat, and wish to share…

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Disk Storage

Ontap Simulator, and some insights about NetApp

Byetzion 09/05/2006

First and foremost – the Ontap simulator, a great tool which surely can assist in learning NetApp interface and utilization, lacks in performance. It has some built-in limitations – No FCP, no disks (virtual disks) larger than 1GB (per my trial-and-error. I might find out I was wrong somehow, and put in on this website),…

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