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A comment on Btrfs Allocator Hints. Parent comment

Re:Btrfs Allocator Hints by ahofmann on Friday July 11, 2025 @04:23PM (#44536458)
What the hell are you talking about? Any filesystem on any OS I've seen the last 3 decades had some kind of recovery path after any crash. Some of them lose more data, some of them less. But being unable to mount, is a bug that makes a filesystem untrustworthy and useless.

And how would RAID help in that situation?

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Re:Btrfs Allocator Hints by riku_iki on Friday July 11, 2025 @04:31PM (#44536515)
> But being unable to mount, is a bug that makes a filesystem untrustworthy and useless.

we are in disagreement on this. If partition table entry corrupted, you can't mount without some low level surgery.

> And how would RAID help in that situation?

depending on raid, your data will be duplicated on another disk, and will survive in case of one/few disks corruption.

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Re:Btrfs Allocator Hints by ahofmann on Saturday July 12, 2025 @07:54AM (#44541428)
The partition table gets mostly written only once in the lifetime of a filesystem/disk. So it almost never corrupts during an os crash.

There are a lot of RAIDs and configurations. Some of them may do what you describe, but most don't.

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Re:Btrfs Allocator Hints by riku_iki on Saturday July 12, 2025 @10:51AM (#44542465)
Ok, I know this, not sure what is your point.
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