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Block cloning happened to expose this bug easier, but it seems like this bug might actually date back to the very beginning of ZFS with Sun, with the opportunit

by chungy 3y ago

Block cloning happened to expose this bug easier, but it seems like this bug might actually date back to the very beginning of ZFS with Sun, with the opportunities to trigger it being so rare, that nobody had noticed until now. I suppose it's still a bad bug, but it goes to show that file systems are complicated beasts, practically impossible to test all the ways they can be put through the wringer, and bugs like this can hide for 17 years before being unearthed.

evanjrowley 3y ago
> it seems like this bug might actually date back to the very beginning of ZFS with Sun Looks like you might be right about that. The oldest commit referenced in the fix [0] was from 2006[1], which was ~5 months after Sun released ZFS. Glad this is fixed! [0] https://github.com/openzfs/zfs/pull/15571 https://github.com/openzfs/zfs/pull/15571 [1] https://github.com/illumos/illumos-gate/commit/c543ec060d https://github.com/illumos/illumos-gate/commit/c543ec060d