RAR als gzip/bzip2 Ersatz über STDIN/STDOUT nutzen

Mich hat es schon länger gestört, dass ich unter Linux nur single threaded Packprogramme habe und heute bin ich auf eine Funktion von rar gestoßen, die ich noch nicht kannte: -si[name] Read data from stdin (standard input), when creating an archive. Optional ‘name’ parameter allows to specify a file name of compressed stdin data in…

VT-d / IOMMU with intel haswell and Z87 chipset

A sub project of Homeserver 2.0 was the virtualization of my home router. I wanted to use pass-through of the additional nic for the external interface, so my host system can’t see any external traffic. The steps should be easy, started virt-manager and followed these simple steps: After a reboot of the vm i got…

Linux CPU Hotplug in VMware

Prerequisites: CPU Hotplug is activated: VMware: Edit Settings -> Options -> Memory/CPU Hotplug -> CPU Hotplug Note: You can only add CPU sockets. If you have configured more e.g. 4 cores per socket you can only add cores in steps of 4 Adding CPUs: Raise the assigned sockets in the settings Activate the added cores…

Linux Memory Hotplug in VMware

Prerequisites: Memory Hotplugging is activated for the VM: VMware: Edit Settings -> Options -> Memory/CPU Hotplug -> Memory Hot Add Kernel module acpi_memhotplug is loaded Memory expansion: Raise assigned memory in the VM settings RAM has to be taken online in the VM. For this execute the script below cd /sys/devices/system/memory for i in memory*…

vCenter SSO Upgrade Error 1603

Two days after release of vSphere 5.5 i have tried the upgrade of our vCenter and it was not a “Next-Next-Finish” thing. During the upgrade of the SSO service a rollback happens and the only thing i found in the logfiles was a cryptic error 1603. After a longer search i found a thread in…