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


VxVM : Resolving the Intermittent Disk errors by clearing the failing flag on a disk

If I/O errors are intermittent rather than persistent, VxVM sets the failing flag on a disk, rather than detaching the disk. Such errors can occur due to the temporary removal of a cable, controller faults, a partially faulty LUN in a disk array, or a disk...


Linux : Identifying Disk Errors in Linux

Below procedure can be used to identify the hard disk errors in linux operating system. Execute the following command to identify the available disk configuration   # /bin/more /proc/scsi/scsi Output will include all the currently available disks to the linux, and the output vary depending on...


Solaris Troubleshooting X86 : finding cause for system power off

Here we discuss about  some guidelines on how to proceed if you find a Sun X64 server has unexpectedly powered off. The examples offered may be specific to a particular command or firmware version, are provided to illustrate a troubleshooting concept, and may not apply to...


VCS : verify if the VERITAS Cluster Server configuration database is open(RW) or closed(RO))

Use the following command to display the current state of the Veritas Cluster Server(VCS) configuration database: # haclus -display | grep ReadOnly ReadOnly 1 A result code of 1 indicates the configuration database is in a closed(ReadOnly) state. A result code of 0 indicates the configuration...


Solaris 10: Patching Solaris 10 on servers with non-global zones

For servers with Solaris 10 OS at, or near, update 1 (1/06) or update 2 (6/06), if non-global zones are already configured and running, patching these servers at single user mode will encounter issues.  Patches may only be loaded on the global zone but not on...

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