server Archive

Debian Wheezy, Dell PowerEdge and Broadcom NetXtreme II / bnx2 driver

Problem Many tried to install Debian Wheezy or an earlier edition of Debian on Dell server and came to the point, where installation required additional drivers for your network card. It’s pretty annoying thing and we aren’t used to such issues these days, since most distributions include almost all drivers you can imagine.  As you may know Debian dropped bnx2

Leap second, Java and NTP leads to disaster – how to setup ntpd to avoid that

Like many other companies around the globe we also had some issues with last leap second. We couldn’t figure out why is our hadoop cluster acting strangely and using almost all CPU. After a while of browsing we found out, that the real cause of this was Java and leap second. As you may know

Moving logical volume (LVM) over network

Sometimes you come to an issue of moving raw volume from one server to another. Now this can be pretty complicated thing. You could make a snapshot of LV or make an image file, which you would copy then to another server, but that takes ages. When creating image you also need almost double the