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inode
This term is a technical portmanteau of index node, used almost exclusively within the context of computer science and operating system administration. It refers to the internal bookkeeping mechanism of a filesystem rather than the user-facing file itself. Because an inode stores metadata, a filesystem can run out of inodes even if there is still physical disk space available, leading to a specific type of system error where no new files can be created.
In professional technical documentation, the term is treated as a standard countable noun. It is rarely used outside of discussions regarding Unix, Linux, or similar filesystem architectures, and would be considered jargon in a general business or casual conversation.
Meanings
Examples
The system is out of inodes even though there is plenty of disk space left.
Each file in a Unix filesystem is uniquely identified by its inode number.
I need to check the inode usage on this partition.
An inode stores metadata like permissions and timestamps but not the filename.
Wait, did you run out of inodes because of too many small files?
The kernel uses the inode to locate the data blocks on the physical disk.
Hard links simply point to the same inode as the original file.
I wonder if increasing the inode density will solve this storage issue.