I always forget, and this blog is meant to help me remember.
Found in Tar’s manual, are these simple directives:
Have a file called file.tar, do:
tar -xf file.tar full/path/without/trailing/slashes
It can be a file or directory. You can have a list of files, such:
tar -xf file.tar home/me home/you home/us/important-file
Should do the trick.
I have a nice SCSI tape connected to a single server. This allows for on-demand backups, with the hope (and seldom, with the established knowledge) that I can recover the data I have there. Old computers, decommissioned computers and systems I wish to erase and reuse are seldom backed-up, just because of the effort in…
Unlike VMware Server, Xen’s HyperVisor does not allow an easy collection of performance information. The management machine, called “Domain-0” is actually a privileged virtual machine, and thus – get its own small share of CPUs and RAM. Collecting performance information on it will lead to, well, collecting performance information for a single VM, and not…
When one wants to achieve fast provisioning of virtual machines, some solutions might come into account. The one I prefer uses Linux LVM snapshot capabilities to duplicate one working machine into few.
This can happen, of course, only if the host running VMware-Server is Linux.
LVM snapshots have one vast disadvantage
Linux LVM is a wonderful thing. It is scalable, flexible, and truly, almost enterprise-class in every details. It lacks, of course, at IO performance for LVM snapshots, but this can be worked-around in several creative ways (if I haven’t shown here before, I will sometime). What it can’t do is dealing with a mixture of…
In particular – Oracle UEK, which “claims” to be 2.6.39-xxx, but is actually 3.0.x with a lower version number. Several misbehaviors (or differences) of version 3 can be found. One of them is related to BackupExec. The service would not start on OEL6 with UEK kernels. The cause of it is an incorrect use of…
This is an interesting bug I have encountered: The output of an sssu command should look like this: EVA> DELETE STORAGE “Virtual DisksLinuxoracleSNAP_ORACLE” EVA> It still leaves the snapshot (SNAP_ORACLE in this case) visible, until the web interface is used to press on “Ok”. This happened to me on HP EVA with HP StorageWorks Command…
