Re: [PATCH 04/22][RFC] Unionfs: Common file operations

Shaya Potter
2006-09-03T01:04:10Z

On Fri, 2006-09-01 at 18:57 -0400, Trond Myklebust wrote:
> On Fri, 2006-09-01 at 18:36 -0400, Shaya Potter wrote:
> > On Fri, 2006-09-01 at 18:20 -0400, Trond Myklebust wrote:
> >
> > > Race! You cannot open an underlying NFS file by name after it has been
> > > looked up: you have no guarantee that it hasn't been renamed.
> >
> > In a unionfs case that's not an issue. Nothing else is allowed to use
> > the backing store (i.e. the nfs fs) while unionfs is using it, so there
> > shouldn't be a renaming issue.
>
> How are you enforcing that on the server?

If I formatted a partition on a san w/ ext3, who would enforce that only
one machine has access to it at a time?

the administrator of the file system.

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