The Unsorted Block Image File System (UBIFS) is a successor to JFFS2, and competitor to LogFS, as a file system for use with raw flash memory media. Development began in earnest in 2007, with the first stable release made to Linux kernel 2.6.27 in October 2008. The file system is developed by Nokia engineers with help of the University of Szeged, Hungary.
Note that UBIFS works on top of an unsorted block images (UBI) device, which is itself on top of a memory technology device (MTD). MTDs are not to be used directly. Two major differences between UBIFS and JFFS2 are that UBIFS supports write caching, and UBIFS errs on the pessimistic side of free space calculation. UBIFS tends to perform better than JFFS2 for large NAND FLASH devices. This is a consequence of the UBIFS design goals: faster mounting, quicker access to large files, and improved write speeds. UBIFS also preserves or improves upon JFFS2's on-the-fly compression, recoverability and power fail tolerance. UBIFS's on-the-fly data compression allows zlib (deflate algorithm) or LZO.
Can you hear it in my voice
Was it something I let slip
Does the whole world know
Isn't it obvious?
I'm the one who's in control
Now i'm acting like a fool
Do my feelings show?
Is my face aglow?
Isn't it obvious?
That I don't know what
I'm doing anymore
I'm feeling like a little girl
Caught up in emotions
I'm out of control
Isn't it obvious?
Do you see my hands, they tremble
Wonder why I can't
Look you in the eyes
Don't know how long
I can keep this inside
Isn't it obvious?
Suddenly these emotions are
In control of my heart
Can you see it in my eyes
Every glance, every smile
Must give me away