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Re: kern/54647: panic: ffs_newvnode: dup alloc ino=2782620

On Fri, Oct 25, 2019 at 03:55:01PM +0000, Kamil Rytarowski wrote:
>  Personally, I would like to see rejection of mount. What should happen
>  during operation is another affair and there is enough prior work on the
>  mounting stage.

It if can happen at mount time then sure, it's the best option

>  I'm fine with panic on error as a tunable option.
>  Cprri[ted FS should trigger a meaningful message that FS is corrupted,
>  not something trapped on division by 0 (or other anomaly).
>  I'm also against "oops" Linux kernel behavior, but probably remounting
>  to read/only with a warning to run fsck is reasonable. But if we compare

no, it's not. I've got enough trouble with this linux behavior to
know that it makes things worse. A corrupted FS during operation is
a sign that something very bad happened, and we should stop anything now.

Letting a server run with a filesystem remounted R/O just lead
to more data loss.

Manuel Bouyer <>
     NetBSD: 26 ans d'experience feront toujours la difference

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