ReadyNAS 1000s and 1100
Redhat Enterprise ver 3
The issue is extreme latency in copying data from an NFS netapp share to a NAS via a Redhat machine.
Background: two weeks ago we replaced a Netapp F740 with the 3020. Config was mirrored over to the 3020 and the only issue we had that weekend was a Linux web server needed "ver2" added to fstab in the mount lines for Netapp NFS shares.
Currently the fstab files for all three Redhat machines is identical. An example of such would be:
LABEL=/ / ext3 defaults 1 1
LABEL=/boot /boot ext3 defaults 1 2
none /dev/pts devpts gid=5,mode=620 0 0
none /proc proc defaults 0 0
none /dev/shm tmpfs defaults 0 0
/dev/sda3 swap swap defaults 0 0
/dev/cdrom /mnt/cdrom udf,iso9660 noauto,owner,kudzu,$
netapp:/vol/vol0/custom /custom nfs vers=2,rw,hard,intr,bg 0 0
netapp:/vol/vol0/cnc /cnc nfs vers=2,hard,intr,rw,bg 0 0
netapp:/vol/vol0/pd /pd nfs vers=2,hard,intr,rw,bg 0 0
netapp:/vol/vol0/eweb /eweb nfs vers=2,rw,hard,intr,bg 0 0
netapp:/vol/vol0/web /custom/net/web nfs vers=2,rw,hard,intr,bg 0 0
netapp:/vol/vol0/pd /pd nfs vers=2,rw,hard,intr,bg 0 0
netapp:/vol/vol0/home /usr/people nfs vers=2,rw,hard,intr,bg 0 0
netapp:/vol/vol0/nov1 /novell nfs vers=2,hard,intr,rw,bg 0 0
netapp:/vol/vol0/eng /eng nfs rw,bg,intr
10.2.1.12:/Archive4 /data/archive/archive4 nfs
10.2.2.10:/archive /data/archive/archive6 nfs rw 0 0
10.2.1.12:/RecentData /custom/archive nfs rw,bg,intr
The 10.2.112 and 10.2.1.10 are two different readyNAS units. All shares mount successfully, however a 'cp' from custom/archive to RecentData takes literally 5 times longer than it did with the old netapp. Which spec-wise alone makes zero sense.
I have tried finding out what version of NFS the ReadyNAS units support but have been unsuccessful so far. I've also no found out what versions RH Ent 3 supports. I've thought about looking for an upgrade to the nic driver in use on RH. But not being completely adept at Redhat I am very unsure of how to proceed.
CIFS shares work beautifully, copying from Netapp to NAS and vice/versa. It's NFS that's giving trouble. Browsing, 'ls'ing, mkdir's, and cp'ing single files or small folders is fine. But the normal procedure that the latency is an issue is dealing with multiple gig's of data, anywhere from 2-20gb at a time.
I have probably not provided enough information here but can anyone help steer me in the right direction?