From: Jim Rees <rees@umich.edu>
To: 白松林 <09120171@bjtu.edu.cn>
Cc: bhalevy@panasas.com, linux-nfs@vger.kernel.org
Subject: Re: questions about blocklayoutdriver.ko
Date: Fri, 11 Mar 2011 12:02:27 -0500 [thread overview]
Message-ID: <20110311170227.GA3096@merit.edu> (raw)
In-Reply-To: <ZILUKLNGDVEJQIKOSYKLJUGEIUTK.09120171@bjtu.edu.cn>
白松林 wrote:
We tested the pNFS informance in the environment,and found that when
client write data to /mnt,all of the data be sent to MDS firstly, and then
MDS forwarded the data to DS,when we got the package by wireshark,and
found most of the protocol between MDS and DS are NFS and TCP.
I suspect you don't actually have a pnfs mount. Check/proc/self/mountstats
for pnfs=LAYOUT_BLOCK_VOLUME. I recently added a troubleshooting section to
the pnfs block client how-to, maybe that will help.
http://wiki.linux-nfs.org/wiki/index.php/Fedora_pNFS_Client_Setup
prev parent reply other threads:[~2011-03-11 17:02 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-03-11 16:18 questions about blocklayoutdriver.ko 白松林
2011-03-11 17:02 ` Jim Rees [this message]
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