Understanding the booting process is important in the sense that you can get a clear idea when a system faces a booting problem if you are familiar with the booting sequence and steps involved. You can thereby isolate a booting phase and quickly resolve the issues. Continue reading “Booting Process in Solaris”
Category: Basics
DNS Troubleshooting
DNS troubleshooting , this article describes some of the common dns problems and their solutions.
First phase of article describes dns errors relating to configuration , server setup and its basic functionality . Second phase talks about the nslookup related errors when the dns servers seems to be working correctly but names resolution fail . Continue reading “DNS Troubleshooting”
fsck Command – Check & Repair Linux & Unix File Systems
fsck, similar to chkdsk in windows, checks and repairs the file system in Unix & Linux operating systems. Learn about fsck modes, phases & fsck errors messages
fsck, File System Consistency checK, is a system utility in Unix, Linux and other Unix like systems for checking and repairing file system inconsistencies.
File system can become inconsistent due to several reasons and the most common is abnormal shutdown due to hardware failure, power failure or switching off the system without proper shutdown. Due to these reasons the superblock in a file system is not updated and has mismatched information relating to system data blocks, free blocks and inodes.
fsck in Linux
fsck in this document is refered with reference to ufs file system but it can be used in Linux systems as
fsck -t ext2 /dev/sda3
or
fsck.ext2 /dev/sda3
fsck.ext4 /dev/sda3
fsck.ext3 /dev/sda3
it returns with any of the followig code
0 – No errors
1 – File system errors corrected
2 – System should be rebooted
4 – File system errors left uncorrected
8 – Operational error
16 – Usage or syntax error
32 – Fsck canceled by user request
128 – Shared library error
fsck checks the file systems defined in /etc/fstab in Linux and /etc/vfstab in Unix systems
Continue reading “fsck Command – Check & Repair Linux & Unix File Systems”
Solaris Error Messages A-D
Solaris / Unix error messages are very short and often we need some more information about the origin of an error and a possible steps to fix the issues.
Here is a list of Solaris / Unix error messages for your reference, most of the error messages are generic Unix error messages but many are specific Solaris Error Messages. Please comment if you can provide some more details about these errors.
This is a multi part document , this part covers error messages starting from A to D Continue reading “Solaris Error Messages A-D”
Managing Sun OpenBoot Parameters and commands
Learn to access, display and set sun openboot parameters on a Sun servers and workstation for input output port , boot , security , diagnostics & more. Continue reading “Managing Sun OpenBoot Parameters and commands”
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