A nice and informative note about how to obtain OracleASM attributes, including “hidden attributes” can be found here. Including the special attribute “_rebalance_compact” which affects the post-rebalance ‘compact’ ASM operation, when altering DiskGroups (per-DiskGroup, of course). Just a reminder about this specific attribute – when ASM performs rebalance operation (adding or dropping disks) it attempts…
As part as my efforts of reducing the management overhead of multiple systems – much like the rest of the world – I am in a long process of migrating all my workload from virtual machines, each dedicated to a single or a small number of related services, to a container-based solutions. While containers are…
History file is a great source of information, either if you do not remember your past actions, or if you are not a single administrator of a system, and you need to figure out what has been performed on it in the past. Unfortunately, history is not a very reliable source of information – the…
RedHat introduced using modules in DNF on RHEL version 8 (and above). This opens very interesting new options, however, sometimes – a quick-n-dirty repo is needed. An example – for offline systems, a repo of already installed packages (on exactly similar system) is created for later use. This used to work well on RHEL version…
After one of the recent updates, a few KVM-based systems could not boot anymore. I am using ZFS for my emulated block devices, and I was happy with that until recently. Now – VMs won’t start, showing the error message in this post’s header. The source of the problem is rather nasty – qemu update…
This is a bit on the less legit side, but a need rose where I was required to update the BIOS on an old SuperMicro SBB server. The thing is – the IPMI, which is fully capable otherwise, did not allow me to update the BIOS using this interface, and the other options were using…
