Re: CephFS and 32-bit Inode Numbers

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OK I found that the kernel has an "ino32" mount option which hashes 64
bit inos to 32-bit space.
Has anyone tried this?
What happens if two files collide?

-- Dan

On Mon, Oct 14, 2019 at 1:18 PM Dan van der Ster <dan@xxxxxxxxxxxxxx> wrote:
>
> Hi all,
>
> One of our users has some 32-bit commercial software that they want to
> use with CephFS, but it's not working because our inode numbers are
> too large. E.g. his application gets a "file too big" error trying to
> stat inode 0x40008445FB3.
>
> I'm aware that CephFS is offsets the inode numbers by (mds_rank + 1) *
> 2^40; in the case above the file is managed by mds.3.
>
> Did anyone see this same issue and find a workaround? (I read that
> GlusterFS has an enable-in32 client option -- does CephFS have
> something like that planned?)
>
> Thanks!
>
> Dan
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