Hi!
These empty files with sticky bit are so called link-files. Their
extended attributes contains location of the server, where the real
file resides. These link-files are used by distribute translator, when
the actual location of a file differs from the location computed using
name hash ( see lookup-unhashed option ). This could happen if
GlusterFS installed over existing data or when number of servers
changed.
WBR,
Andrey
2009/8/31 Simon Liang <simonl at bigair.net.au>:> Hi,
>
>
>
> I have 4 server nodes set up, distributed over 2-replicated-nodes.
>
>
>
> volume client1a
>
> type protocol/client
>
> option transport-type tcp/client
>
> option remote-host gs1
>
> option remote-port 7001
>
> option remote-subvolume brick
>
> end-volume
>
>
>
> volume client2a
>
> type protocol/client
>
> option transport-type tcp/client
>
> option remote-host gs2
>
> option remote-port 7001
>
> option remote-subvolume brick
>
> end-volume
>
>
>
> volume client1b
>
> type protocol/client
>
> option transport-type tcp/client
>
> option remote-host gs1
>
> option remote-port 7002
>
> option remote-subvolume brick
>
> end-volume
>
>
>
> volume client2b
>
> type protocol/client
>
> option transport-type tcp/client
>
> option remote-host gs2
>
> option remote-port 7002
>
> option remote-subvolume brick
>
> end-volume
>
>
>
> volume afr1
>
> type cluster/replicate
>
> subvolumes client1a client2a
>
> end-volume
>
>
>
> volume afr2
>
> type cluster/replicate
>
> subvolumes client1b client2b
>
> end-volume
>
>
>
> volume distribute
>
> type cluster/distribute
>
> subvolumes afr1 afr2
>
> end-volume
>
>
>
> I recently just noticed that there are some files missing, and when I
> check the nodes client1a and client1b, or client2a and client2b.
>
>
>
> I notice that on one node, the file appears as:
>
> ---------T 1 root root 0 2009-08-25 16:25 DSC01927.JPG
>
> ---------T 1 root root 0 2009-08-25 16:26 DSC01929.JPG
>
> ---------T 1 root root 0 2009-08-25 16:26 DSC01931.JPG
>
> ---------T 1 root root 0 2009-08-25 16:25 DSC01942.JPG
>
> ---------T 1 root root 0 2009-08-25 16:25 DSC01944.JPG
>
> ---------T 1 root root 0 2009-08-25 16:25 DSC01946.JPG
>
> ---------T 1 root root 0 2009-08-25 16:26 DSC01915.JPG
>
> ---------T 1 root root 0 2009-08-25 16:26 DSC01905.JPG
>
> ---------T 1 root root 0 2009-08-25 16:26 DSC01907.JPG
>
>
>
> But on the other node is fine.
>
>
>
> That is one problem, the other is that since files are distributed
> between client(1,2)a and client(1,2)b, why are the files appearing on
> both servers? Distribute should only copy files to one node or the
> other, not both.
>
>
>
> Regards,
>
> Simon