[Gluster-users] Strange behaviour in AFR - directory read only from first brick?

[baggio liu]

Thank you very much. :)


Baggio


2008/7/4 Anand Avati <avati at zresearch.com>:

>
>       As I test, AFR can migrate file (from Server2 to Server1 )which
>> create at Server1 down
>> time. But if a file is created when Server1 alive, then Server1 goes down
>> (and all
>> the data lose.) And restart Server1 (as well, glusterfs process), data can
>> *not *be
>> replicated by AFR automatically.
>
>
> It is a little more detailed than that. If server1 disk is gone and you put
> an empty disk in the backend, server1 is rebuilt properly. The issue is when
> you take server1 offline, delete a few files  (and keep the directory
> version intact) and plug it back in, the file can be rebuilt only when you
> open the file by name (and will not be listed by ls). Handling this case
> (only few files are deleted) is too expensive and makes normal operation
> very slow. It is hard to detect changes without happening through AFR in
> general (without compromising performance of 'normal' operations). We are
> still on the lookout for a solution.
>
> avati
>
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