This board is a tricky board. 4GB RAM and above behave in a weird manner in Linux. It appears that PCI 32bit mapping doesn’t work correctly under Linux. To allow Linux to work on this hardware without failure (such as kernel crush during startup), you must follow these three simple guidelines: 1. Spread the memory…
When adding a certain shell to an HP-UX system, for example, /usr/bin/tcsh, each user set to use this shell will not be able to FTP to the machine, until there is entry in /etc/shells. The trick is that even if the file doesn’t exist, you have to create it. By default, HP-UX allows only /sbin/sh…
Problem as follows: A Linux server is connected to a 1Gb/s LAN using 1Gb/s interface. I was told that SSH to the machine fails with “socket error” when done from Windows/Putty. One of the tests was done using Linux/ssh client, and it went fine. A switch was replaced, and other methods of detection showed weird…
I have installed today an HP-UX 11i V2 on PA-Risc server, and it went quite fine. I have used the “Technical Environment” DVDs for installation, and it went fine. I was unable to find, however, the Raid1 (Mirror) tools for the LVM. Symptoms: There is no parameter “-m” to “lvextend“. According to documentaion (or even…
Problem: Two Linux servers (RHEL4) running NFS Server in High-Availability (failover) mode. When failovering the resources, an NFS client can continue to work. When failing back, the NFS client times-out for 5+ minutes. Further problem information: While using RHEL3, that same (exact) configuration worked flawlessly. Solution: set NFS options to UDP instead of TCP. Explanation:…
I’ve “fixed” such a computer a with tendency to freeze today. It happened that about every two hours, the computer froze. I let it roam for a while, and noted that the Chipset’s North-Bridge was getting terribly hot. The computer chassis was left open because of driver incompatibility regarding the on-board network interface, so a…
