Solaris Troubleshooting : disk boot problems from ok> prompt
Errors: ERROR: Can’t open boot-device Boot device is unknown Error: improper device path Fast Data Access MMU Mis
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VCS : Configuring Veritas Cluster and Configuration files
About the VCS configuration files VCS configuration files include the following: main.cf The installer creates the VCS configuration file in the /etc/VRTSvcs/conf/config folder by default during the VCS configuration. The main.cf file contains the minimum information that defines the cluster and its nodes. types.cf The file...
Solaris Troubleshooting – finding process that is using specific network address and port
Sometimes it is required to find out the process that is running on a specific network port, and one common example is if an application configured to use a specific port which is already bind by some of other process, we should figure out first which...
Bash Scripting – Understanding Script input and output
So far, you’ve seen two methods for displaying the output from your scripts: Displaying output on the monitor screen Redirecting output to a file Both methods produced an all-or-nothing approach to data output. There are times, however, when it would be nice to display some data...
Bash Scripting – Compound Testing
The if-then statement allows you to use Boolean logic to combine tests. You can use these two Boolean operators: [ condition1 ] && [ condition2 ] [ condition1 ] || [ condition2 ] The first Boolean operation uses the AND Boolean operator to combine two conditions....
Solaris SVM : Repartitioning Drives for Operating System Upgrade
Below instructions useful to deal with a common issue in upgrading an operating system (OS) where the existing partitions, which were fine for the operating system (OS) prior to upgrading, are not large enough to hold the same file systems of the new OS. As a example, one of...
Performance Monitoring – Identifying Memory Bottlenecks
Memory bottlenecks are evidenced by two different things happening on the system — paging and swapping. Paging refers to pages of memory being reclaimed by the page daemon when the system starts to get low on free memory. Swapping is more extreme, and refers to...
Solaris Troubleshooting : How to match an sd number to a lun
When using commands such as ‘sar -d‘ or ‘iostat’, the naming of the devices is based on sd numbers which must be translated into cxtxdx numbers to be useful. When LUNs are involved, the translation process differs.
VXVM 6.1 – How to remove a disk from vxvm using vxdiskunsetup?
Below commands will show to remove a VxVM Control. Force deconfiguration of a VxVM-initialized disk, enc3_5: # /etc/vx/bin/vxdiskunsetup -C enc3_5 Shred a VxVM-initialized disk, hds9970v0_14, with 3 passes.
NFS Configuration in Linux
The Network File Systems (NFS) protocol works great when it comes to Linux systems because it allows for client flexibility, centralized management of files, and some other great features. To get NFS working properly, you need to set up the NFS server first and then set...
