DRBD is a low-cost shared-SAN-like solution, which has several great benefits, among which are no single point of failure, and very low cost (local storage and network cable). Its main disadvantages are in the need to constantly monitor it, and make sure it does what’s expected. Also – in some cases – performance might be affected greatly….
It wasn’t junk once… This stuff used to be useful, but it has been laying around for a long while now, doing nothing but collect some dust. I have ‘donated’ some stuff to someone who actually wanted it, but neither him nor me can find a use, nowadays, to a monochrome display card with an…
As my work takes me to various places (where technology is concerned), I collect lots of browser tab of things I want to keep for later reference. I have to admit, sadly, that I lack the time to sort them out, to make a real good and nice post about them. I do not want…
This post is for the users of the great dm-multipath system in Linux, who encounter a major availability problem when attempting a resize of mpath devices (and their partitions), and find themselves scheduling a reboot. This documented is based on a document created by IBM called “Hot Resize Multipath Storage Volume on Linux with SVC”,…
I have encountered several methods of doing stateless RedHat Linux systems. Some of them are over-sophisticated, and it doesn’t work. Some of them are too old, and you either have to fix half the scripts, or give up (which I did, BTW), and after long period of attempts, I have found my simple-yet-working-well-enough solution. It…
Recently, bonding module requires IPv6 module. There are two possible solutions. The first is to define zeroconf to off, by adding the following line to /etc/sysconfig/network : NOZEROCONF=yes The other method, which actually disables IPv6 is to insert into /etc/modprobe.conf the following line: options ipv6 disable=1 That should do the trick. You will need to…
