http://www.pvfs.org/doc/pvfs2-faq/index.php#SECTION00075000000000000000
6.5.2 Distribution parameters
Some distributions allow you to set parameters that impact how the
distribution behaves. These parameters can be set as follows:
prompt# setfattr -n "user.pvfs2.dist_params" -v "strip_size:4096" /mnt/
pvfs2/directory
You can specify more than one "parameter:value" pair by seperating
them with commas.
6.5.3 Number of datafiles
You can also specify the number of datafiles to stripe across:
prompt# setfattr -n "user.pvfs2.num_dfiles" -v "1" /mnt/pvfs2/directory
PVFS defaults to striping files across each server in the file system.
However, you may find that for small files it is advantages to limit
each file to only a subset of servers (or even just one).
On Jan 15, 2008, at 8:01 PM, Wang Yu wrote:
Hi, all
Now I have three IO servers and one metadata server and multiple
clients. When I write a file in one client, how can I control this
file is stored into one IO server or all IO servers. Namely, how do
single and stripe storage pattern in pvfs2 work? and how to tune the
stripe size?
Would you please tell me about the storage pattern of pvfs2? or some
documents will be appreciated!
Thanks!
--
National Research Center for Intelligent Computing Systems
Institute of Computing Technology, Chinese Academy of Sciences
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