Unix, Linux, DevOps , Cloud computing and BigData Knowledge-Base


Storage : "Failed to create nodes for pwwn" error during solaris boot

If Fibre Channel devices are not present or turned off, boot errors will occur. Without corrective action, these errors will persist for every re-boot. The boot errors which are linked to this problem, can be found in the /var/adm/messages file, and are formatted as follows:


Linux Boot loader – GRUB

The function of a boot loader is to locate the Linux kernel, and load it into memory before starting it. Boot loading usually occurs in at least two    stages – the BIOS loads the primary boot loader, which loads a secondary boot loader in order...


VXVM on Solaris ( Sparc ) – Understanding boot Failures

Possible reasons for a boot failure: The boot device cannot be opened. The system cannot be be booted from unusable or stale plexes. A UNIX partition is invalid. There are incorrect entries in /etc/vfstab. Configuration files are missing or damaged


Beginner’s Lesson – VERITAS Volume Manager for Solaris

  Veritas Volume Manager is a storage management application by Symantec ,  which allows you to manage physical disks as logical devices called volumes. VxVM uses two types of objects to perform the storage management 1. Physical objects – are direct mappings to physical disks 2 . Virtual...

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