Data Storage - How do I know what blocks are taken and what blocks are free in UFS ?

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How do I know what blocks are taken and what blocks are free in UFS ?

mishka

2006-06-14, 7:13 am

There is something called "bitmap" in UFS, it maps logical blocks to 0
and 1 depending on type of block - free or taken. How do I retrieve
this bitmap ? Is there some ioctl around ? Also - can you provide me
with links to UFS structure description ?