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тАО03-08-2005 02:26 AM
тАО03-08-2005 02:26 AM
This system is on NIS, and the NFS mounts are all automounted.
Does anyone have any thoughts on this?
Please Help!
Solved! Go to Solution.
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тАО03-08-2005 04:03 AM
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тАО03-08-2005 04:06 AM
тАО03-08-2005 04:06 AM
Re: cp on nfs mount sleeps
1) Ping with variouse packetsize. From this DS20E to NFS server and back - from NFS server towards this DS20E.
2) FTP same file from same dir.
3) Maybe, rcp - again, same file from same dir.
4) Try cp, ftp, rcp this file in both directions.
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тАО03-08-2005 07:02 AM
тАО03-08-2005 07:02 AM
Re: cp on nfs mount sleeps
ftp is fast. mv responds the same as cp.
Here is a twist. I have 6 other 5.1B servers, and they all are doing this now. I have 15 5.1A servers, and they do not have this issue.
I have 12 4.0D - 4.0G systems and they don't do this either. It seems that this is limited to 5.1B.
If it makes any difference, the NFS servers are Sun V480's running Solaris 2.9 (12/03), and the disk is mounted from an EMC Clarion SAN array.
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тАО03-08-2005 07:06 AM
тАО03-08-2005 07:06 AM
Re: cp on nfs mount sleeps
# nfsstat
Server rpc:
tcp: calls badcalls nullrecv badlen xdrcall creates
0 0 0 0 0 0
udp: calls badcalls nullrecv badlen xdrcall
0 0 0 0 0
Server nfs:
calls badcalls badprog badproc badvers badargs
0 0 0 0 0 0
unprivport weakauth
0 0
Server nfs V2: (0 out of 0 calls)
null getattr setattr root lookup readlink read
0 0% 0 0% 0 0% 0 0% 0 0% 0 0% 0 0%
wrcache write create remove rename link symlink
0 0% 0 0% 0 0% 0 0% 0 0% 0 0% 0 0%
mkdir rmdir readdir statfs
0 0% 0 0% 0 0% 0 0%
Server nfs V3: (0 out of 0 calls)
null getattr setattr lookup access readlink read
0 0% 0 0% 0 0% 0 0% 0 0% 0 0% 0 0%
write create mkdir symlink mknod remove rmdir
0 0% 0 0% 0 0% 0 0% 0 0% 0 0% 0 0%
rename link readdir readdir+ fsstat fsinfo pathconf
0 0% 0 0% 0 0% 0 0% 0 0% 0 0% 0 0%
commit
0 0%
Client rpc:
tcp: calls badxids badverfs timeouts newcreds
0 0 0 0 0
creates connects badconns inputs avails interrupts
0 0 0 0 0 0
udp: calls badxids badverfs timeouts newcreds retrans
57983 1 0 2417 0 2417
badcalls timers waits
1 5340 0
Client nfs:
calls retrans badcalls nclget nclsleep ndestroys ncleans
57983 0 1 57983 0 20 57963
Client nfs V2: (341 out of 57983 calls)
null getattr setattr root lookup readlink read
0 0% 150 43% 0 0% 0 0% 75 21% 9 2% 0 0%
wrcache write create remove rename link symlink
0 0% 0 0% 0 0% 0 0% 0 0% 0 0% 0 0%
mkdir rmdir readdir statfs
0 0% 0 0% 2 0% 105 30%
Client nfs V3: (57642 out of 57983 calls)
null getattr setattr lookup access readlink read
0 0% 69 0% 6 0% 123 0% 41 0% 4 0% 16742 29%
write create mkdir symlink mknod remove rmdir
40483 70% 4 0% 0 0% 0 0% 0 0% 2 0% 0 0%
rename link readdir readdir+ fsstat fsinfo pathconf
0 0% 0 0% 14 0% 10 0% 57 0% 9 0% 48 0%
commit
30 0%
I don't see any issues, but maybe I am blind.....
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тАО03-09-2005 01:16 AM
тАО03-09-2005 01:16 AM
Re: cp on nfs mount sleeps
57983 1 0 2417 0 2417
Looks like you got timeouts and retransmissions. Did you zero out the counts with '# nfsstat -z' before trying the copy?
How about the '# netstat -i'? What are the counts for Ierrs & Oerrs?
Vic
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тАО03-09-2005 01:54 AM
тАО03-09-2005 01:54 AM
Re: cp on nfs mount sleeps
You are correct I did not clear the tables prior to the copy. But I will say that the numbers were the same after the cp test as they were before it.
Thanks for all of these suggestions.
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тАО03-09-2005 02:21 AM
тАО03-09-2005 02:21 AM
Re: cp on nfs mount sleeps
NFS v2 or v3, TCP or UDP.
1) Is it the same on 5.1B and 5.1A systems?
2) Maybe, try to fiddle with NFS v2 or v3, TCP or UDP?
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тАО03-09-2005 06:04 AM
тАО03-09-2005 06:04 AM
Re: cp on nfs mount sleeps
How about taking automount out of the equation for now and manually mount the NFS disk to see what happens.
Alexey's suggestion of trying the different protocols is a good idea. In the mount command it's the '-o proto=tcp' or '-o proto=udp' option. The mount command should look something like this:
# mount -t nfs -o proto=udp|tcp
Vic
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тАО03-09-2005 06:14 AM
тАО03-09-2005 06:14 AM
Re: cp on nfs mount sleeps
I will try your suggestions. I may not get to try them until after 5pm EST.....