Backuping a cluster takes too much time !

Germain Maurice germain.maurice at linkfluence.net
Wed May 12 17:57:28 EDT 2010


Hi,

I'm testing the backup process of a node and all nodes.
I'm very surprised by the time it took.

The beginning using 'date' :
# date ; ls -lh
mardi 11 mai 2010, 14:31:54 (UTC+0200)
total 8,0K
-rw-r--r-- 1 riak riak    8 2010-05-11 14:31 backup-20100511
drwxr-xr-x 2 riak riak 4,1K 2010-05-05 16:22 dets
drwxr-xr-x 3 riak riak  168 2010-05-05 16:25 innodb
drwxr-xr-x 2 riak riak  272 2010-05-11 14:26 ring
# date ; ls -lh
mercredi 12 mai 2010, 23:35:44 (UTC+0200)
total 300G
-rw-r--r-- 1 riak riak 300G 2010-05-12 21:42 backup-20100511
drwxr-xr-x 3 riak riak  168 2010-05-05 16:25 innodb
drwxr-xr-x 2 riak riak  272 2010-05-11 14:26 ring

On each of my two nodes i have :
194G    /reiser/riak/innodb/innokeystore/

The backup process of all nodes took more than 33 hours !!
I hope it's not a normal behavior because we expect that the cluster 
will store up 4TB or more.

Regards,
Germain





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