Well, I have another question. When we have several IO servers and want to mount pvfs2 in one client, in the command "mount -t pvfs2 tcp://testhost:3334/pvfs2-fs /mnt/pvfs2" what IO server's hostname should replace 'testhost'?
Thanks a lot! On Jan 16, 2008 11:19 AM, Rob Ross <[EMAIL PROTECTED]> wrote: > the default is simple stripe, which does the traditional round-robin > striping you're probably most familiar with. twod_stripe is a two- > dimensional striping pattern used to combat incast. > > rob > > On Jan 15, 2008, at 8:58 PM, Wang Yu wrote: > > > Okay. Thanks! > > Well, what is the difference among basic_dist, simple_stripe and > > twod_stripe? and what is the default of pvfs2, is it > > simple_stripe(stripe across all IO servers)? > > Thanks! > > > > > > On Jan 16, 2008 10:12 AM, Rob Ross <[EMAIL PROTECTED]> wrote: > > 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 > > > _______________________________________________ > > > Pvfs2-users mailing list > > > [email protected] > > > http://www.beowulf-underground.org/mailman/listinfo/pvfs2-users > > > > > > > > > > -- > > National Research Center for Intelligent Computing Systems > > Institute of Computing Technology, Chinese Academy of Sciences > > -- National Research Center for Intelligent Computing Systems Institute of Computing Technology, Chinese Academy of Sciences
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