Re: panic on 4.20 server exporting xfs filesystem

Tom Haynes
2015-03-08T13:09:09Z

> On Mar 5, 2015, at 5:19 AM, Christoph Hellwig <hch@lst.de> wrote:
>
>> On Wed, Mar 04, 2015 at 03:41:41PM +1100, Dave Chinner wrote:
>> As I understand it, nothing will prevent this - if you don't change
>> the UUID on the filesystem when you clone it, then the UUID will
>> still match and writes can be directed to any block deice with a
>> matching offset/UUID pair.
>
> Unfortunately that's the case indeed. The whole discovery part of
> the block layout protocol is fundamentally flawed, as is the recall
> part. This is my attempt to fix it, but I have no idea how to proceed
> from posting my draft to the IETF to actually making it a standard:
>
> http://tools.ietf.org/html/draft-hellwig-nfsv4-scsi-layout-00

Let's be sure to talk about this at LSF...