Re: [POT] Which journalised filesystem ? (fwd)

From: Hans Reiser (reiser@namesys.com)
Date: Fri Oct 05 2001 - 05:41:37 EST


"Stephen C. Tweedie" wrote:
>
> Hi,
>
> On Wed, Oct 03, 2001 at 08:01:03PM +0200, Bernd Eckenfels wrote:
> >
> > Do you had NFS Problems or do you had filesystem problems?
> >
> > Because NFS interaction with Journaled Filesystems is/was an issue with
> > those recent kernels, as far as i understand.
>
> Should be fine with ext3 and XFS. It's not a journaling problem as
> much as NFS assuming a particular property of the filesystem.
>
> Resierfs had a particular difficulty with NFS, mainly because the NFS
> spec assumes that every file can be looked up by a 64-bit cookie which
> doesn't change over reboots, and that's a hard invariant to deal with
> when you've only got 32-bit inode numbers in the kernel and when your
> filesystem is tree-structured so that the file metadata on disk can
> move about. The VFS has been extended a bit in more recent kernels to
> allow Reiserfs to give NFS the hints it needs to get the file handles
> right.
>
> Cheers,
> Stephen
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NFS and Reiserfs interaction is stable from all reports.

Hans
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