Linked by Thom Holwerda on Fri 6th Nov 2009 23:42 UTC, submitted by poundsmack
"There is a discussion at osnews.com about a simple question: "Should ZFS Have a fsck Tool?". The answer is simple: No. I could stop now, as this answer is pretty obvious when you work a while with ZFS, but i want to explain my position. And i want to ask a different question at the end."
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RE[3]: Contradictory post...
by c0t0d0s0 on Sat 7th Nov 2009 18:07
in reply to "RE[2]: Contradictory post..."
Member since:2008-10-16
Exactly. The filesystem knowns about it's own structure, but a block of random noise is as valid data than a word document when it fits into the structures of the filesystem. As there is no additional metadata to check the contents of a block, you can't say if the data is valid or not. ZFS has its checksums for this task to check if a block in a filesystem or an emulated volume is correct.
A filesystem check just checks the filesystem ... not the data in the entities (files) managed by the filesystem.
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Member since:
2007-07-27
fsck only checks the metadata, but it doesnt check the actual data, right?