[Gluster-users] Facing issue with a specific scenario - Distribute over replicate translator

Nambiar, Vikas vnambiar at akamai.com
Mon Nov 22 07:41:35 UTC 2010


Hi ,

Im using Glusterfs . Please find my gluster client configuration in the
bottom of this mail. 

I am using Distribute translator over the replicate . My setup is as
follows.

Servers - S1,S2,S3,S4
Replicate R1 over S1 and S2.
Replicate R2 over S3 and S4.
Distribute D1 over R1 and R2

Clients are put on 2 machine C1 and C2 with the above setup.

During tests im facing a specific issue. Putting down the scenario
below.

-	Create a Directory /Dir1 in the root filesystem on client.
-	Create a file[I used touch] /Dir1/a.txt.
-	Shutdown server S1.
-	Move the Directory /Dir1 to /Dir2.
-	Create a new Directory /Dir1.
-	Create a new File /Dir1/b.txt.
-	Now Start Server S1.
-	Do an "ls -la" on the client to initiate the afr - autohealing.

Below are the results I am observing:
-	The new Directory Dir1 sometimes shows both a.txt and b.txt .
Expected is just b.txt.
-	The new Directory Dir1 shows only a.txt . The b.txt file is
entirely missing.

These are random results.

My expected result is :
	/Dir1/b.txt
	/Dir2/a.txt
 
Please have look . Seems like autoheal is not able to figureout the
actual events. Also do let me know if my configs are wrong.

Tx
Vikas

Client Config file:
--------------------

volume 172.26.98.24-1
    type protocol/client
    option transport-type tcp
    option remote-host 172.26.98.24
    option transport.socket.nodelay on
    option transport.remote-port 6996
    option remote-subvolume brickex
end-volume

volume 172.26.98.25-1
    type protocol/client
    option transport-type tcp
    option remote-host 172.26.98.25
    option transport.socket.nodelay on
    option transport.remote-port 6996
    option remote-subvolume brickex
end-volume

volume 172.26.98.26-1
    type protocol/client
    option transport-type tcp
    option remote-host 172.26.98.26
    option transport.socket.nodelay on
    option transport.remote-port 6996
    option remote-subvolume brickex
end-volume

volume 172.26.98.27-1
    type protocol/client
    option transport-type tcp
    option remote-host 172.26.98.27
    option transport.socket.nodelay on
    option transport.remote-port 6996
    option remote-subvolume brickex
end-volume

volume replicate-1
    type cluster/replicate
    subvolumes 172.26.98.24-1 172.26.98.25-1
end-volume

volume replicate-2
    type cluster/replicate
    subvolumes 172.26.98.26-1 172.26.98.27-1
end-volume

volume distribute-1
    type cluster/distribute
    lookup-unhashed yes
    subvolumes replicate-1 replicate-2
end-volume

#volume stripe
#    type cluster/stripe
#    option block-size 1MB
#    subvolumes replicate-1 replicate-2 replicate-3
#end-volume

volume writebehind
    type performance/write-behind
    option cache-size 4MB
    subvolumes distribute-1
end-volume










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