Posts tagged ext3

Getting Ext3/4 journal size

Ext3 is a successor of Ext2 with support for journaling which means it can have a log of all it’s recent changes it made or is going to make to the file system. This allows fsck to get the file system back in a good state when a power failure happens for example. But what is the size of the journal? Reading the manpage for tune2fs it says it needs to be between 1024 and 102400 blocks which means it can start with 1MB on a file system with a 1KB block size and 4M on a file system with 4KB block size.

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