[Gluster-devel] Client side AFR race conditions?
Martin Fick
mogulguy at yahoo.com
Tue May 6 19:09:09 UTC 2008
--- gordan at bobich.net wrote:
> Hmm... So you are saying the problem is writing
> without locking?
No, others are saying that. :) I am saying that
writing without locking should be supported (after all
how do I lock from a script, certainly writing to
glusterfs from a script should be supported?) and
it can cause split brain if using AFR.
> Should writing to a file not involve
> an implicit lock, regardles of flock?
While that might solve it, it certainly would be a
performance hit. At this point I would welcome even
the slow locking solution. Since it seems pretty easy
to cause this problem, I would not trust AFR to say a
mail spool without some way of preventing this.
-Martin
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