J. Bruce Fields 写道:
On Mon, Feb 27, 2012 at 02:27:24PM +0800, Fu Liankun wrote:
J. Bruce Fields 写道:
On Wed, Feb 22, 2012 at 06:16:17PM +0800, Fu Liankun wrote:
When copy a big file(about 500MB) to nfs server using pnfs, it cost
obvious longer time as compared with NFSv3 or NFSv4 protocol.
PNFS cost about 300-550s
NFSv3 cost about 49s
NFSv4 cost about 49s
My test environment as following:
MDS: 3.1.0-rc8-pnfs ipaddr1: 192.168.0.100, ipaddr2:192.168.1.100
DS1: 3.1.0-rc8-pnfs ipaddr1: 192.168.0.101, ipaddr2:192.168.1.101
DS2: 3.1.0-rc8-pnfs ipaddr1: 192.168.0.102, ipaddr2:192.168.1.102
client: RHEL6.2GA(2.6.32-220.el6.i686) ipaddr1: 192.168.0.19,
What kind of server are you using?
Sorry for late response.
Fedora14 + 3.1.0-rc8-pnfs
And you're exporting gfs2?
No. I'm exporting ext4.
Does the file system type would influence the result?
--b
--b.
--b
--b.
ipaddr2:192.168.1.19
192.168.1.100 <-------- NFS4.1 connection --------->192.168.1.101
192.168.0.100 <-------- NFS4.1 connection --------->192.168.0.102
192.168.0.19 <-------- NFS4.1 connection --------->192.168.0.100
Dunring the write process, the client output the message:
FS-Cache: Loaded
FS-Cache: Netfs 'nfs' registered for caching
nfs4filelayout_init: NFSv4 File Layout Driver Registering...
nfs: server 192.168.1.101 not responding, timed out
The message "nfs: server 192.168.1.101 not responding, timed out" was
output during the COMMIT request.
Who can tell me the reason why pnfs cost so long time.
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Best wishes
Fu Liankun
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