Category Archives: Operating Systems

Linux : R1Soft hcp module error : Could not init mrf hash!

R1Soft backup may fail in some circumstances, even though no change occurred, the agent and kernel hcp module properly installed with message that the replication driver was not detected as shown below :

Looking at the protected machine system logs, we can observe a “call trace”, memory related entries and the following regarding the… Read More »

Linux : sar command return “Cannot open /var/log/sysstat/sa27: No such file or directory”

Attempting to use the SAR (sadc) command to lookup the historical system resources consumption metrics and got the following message? Cannot open /var/log/sysstat/sa27: No such file or directory Please check if data collecting is enabled Most likely data collecting is disabled (it is the default on several systems). You need to enable data collecting and… Read More »

Linux : Issue with mail aliases “database /etc/aliases.db is older than source file /etc/aliases”

If you are experiencing issues with your local mail aliases, make sure there is no syntax error in /etc/aliases file and have a look at the mail log file :

You most likely will encounter a message like this one :

In that case, simply run the command to rebuild the aliases database… Read More »

Windows : How to configure VLans on Intel network adapter with PowerShell

If you have an Intel card and the necessary “Advanced Network Services (ANS)”, that is bundled with the Intel driver, you have the capability to manage VLans for your network interface with PowerShell. 1. Use the “ipconfig” command to find out the name of your adapter. Example :

In that case, our adapter name… Read More »