4 articles tagged "superblock"
- Why isn’t it possible to create hard links across file system boundaries?
A single inode number use to represent file in each file system. All hard links based upon inode number.
So linking across file system will lead into confusing references for UNIX or Linux. For example, consider following scenario
* File system: /home
* Directory: /home/vivek
* Hard link: /home/vivek/file2
* Original file: /home/vivek/file1
Now you create a hard link as [...] - Understanding UNIX / Linux filesystem directories
You use DNS (domain name system) to translate between domain names and IP addresses.
Similarly files are referred by file name, not by inode number. So what is the purpose of a directory? You can groups the files according to your usage. For example all configuration files are stored under /etc directory. So the purpose [...] - Surviving a Linux Filesystem Failures
When you use term filesystem failure, you mean corrupted filesystem data structures (or objects such as inode, directories, superblock etc. This can be caused by any one of the following reason:
* Mistakes by Linux/UNIX Sys admin
* Buggy device driver or utilities (especially third party utilities)
* Power outage (very rarer on production system) due to UPS [...] - Understanding UNIX / Linux filesystem Superblock
This is second part of “Understanding UNIX/Linux file system”, part I is here. Let us take an example of 20 GB hard disk. The entire disk space subdivided into multiple file system blocks. And blocks used for what?
Unix / Linux filesystem blocks
The blocks used for two different purpose:Most blocks stores user data aka files [...]
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