ZFS

1 What is this ? ZFS is a combined file system and logical volume manager designed by Sun Microsystems. The features of ZFS include protection against data corruption, support for high storage capacities, efficient data compression, integration of the concepts of filesystem and volume management, snapshots and copy-on-write clones, continuous integrity checking and automatic repair, RAID-Z […]

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mount: wrong fs type, bad option, bad superblock

On Centos 7.5 base install, there are no utility’s installed by default. So when I tried to mount an NFS share I got this error :   mount: wrong fs type, bad option, bad superblock on svennd.be:/data, missing codepage or helper program, or other error (for several filesystems (e.g. nfs, cifs) you might need a […]

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Zsh and Its Insecure directories

I hit a small problem when setting up my MacBook Pro with macOS Sierra. Zsh and Its Insecure directories zsh compinit: insecure directories, run compaudit for list. Ignore insecure directories and continue [y] or abort compinit [n]? Use compaudit to show you where the problems are. % compaudit There are insecure directories: /usr/local/share/zsh/site-functions /usr/local/share/zsh Remove […]

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Linux: How to delete a partition with fdisk command

Q. My system comes with pre installed Linux and XP. Now I would like to delete a partition. How do I delete a partition? A. Hard disks can be divided into one or more logical disks called partitions. This division is described in the partition table found in sector 0 of the disk. You need […]

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Vmware Linux Guest Add a New Hard Disk

Step # 1: Rescan the SCSI Bus to Add a SCSI Device A rescan can be issued by typing the following command: echo « – – – » > /sys/class/scsi_host/host#/scan fdisk -l tail -f /var/log/message Replace host# with actual value such as host0. You can find scsi_host value using the following command: # ls /sys/class/scsi_host Output: host0 […]

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INTRODUCTION AU RAID SOUS LINUX

Le RAID, Redundant Arrays of Inexpensive Disks est une technologie permettant l’usage de plusieurs disques simultanément. Il peut optimiser les performances, gérer la tolérance de panne ou les deux à la fois. Ce tutoriel introduit une chaine de tutoriaux sur la HA (Hight Availability), Haute disponibilité. Nous débutons par la mise en place de RAID, […]

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Moving /usr to another partition

I recently discovered that my Ubuntu root directory was getting uncomfortably tight from a space perspective (I’d allocated about 6 GB, /home of course lives on a separate partition). The culprit, du soon told me, was /usr, eating up as much as 4 gigs of space. I guess thats because I’ve installed tons of apps, […]

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