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SubjectRe: [PATCH] Add "-e" option to rpc.gssd to allow error on ticket expiry. Try 2 with added man pages.
On 11/18/2011 10:03 PM, Trond Myklebust wrote:
> On Fri, 2011-11-18 at 15:57 -0500, Jim Rees wrote:
>
>>
>> The write() syscall doesn't indicate whether the data is safe or not. That
>> would be the close() syscall.
>>
> fsync(). Which may succeed if the user renews their ticket first.
> However you may still have data loss if dirty data has been lost because
> of EKEYEXPIRED returns on the WRITE RPC call...
>
Only if the write(2) returned EKEYEXPIRED, surely,
> Also, for the fsync() to return EKEYEXPIRED _after_ the user has renewed
> their ticket would seem counter-intuitive to most people.
>

I would want to know if data was lost.

Intuition means nothing if I get an error.

If it were possible I'd like:

1. write works
1a. WRITE RPC fails, data stays in cache
2. ticket renewed
3. fsync works, data written

But:

1. write...
1a. WRITE RPC fails
1b. ... fails

seems ok.

Even

1. write works
1a WRITE RPC fails
2. ticket renewed
3. fsync fails

would be ok for me. (light cone problems?)



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