On Wed, 11 Jun 1997, Jennifer Dawn Myers wrote:
e.g., no snapshots, increase the number of inodes, no atime update, disable NFS over TCP, ...?
We are currently using NFS over TCP for news purposes. Is that a bad thing?
Not necessarly. Do you have a reason for needed tcp such as your are doing long haul networking?
However there are a lot of things that can go wrong with tcp that can't with udp (there are lots of very broken tcp implementations in this world: not ours of course:-) I would sugest disabling tcp and see what happens. If things stay the same or get better just leave it that way. If not you had tcp turned on for a reason.
Sean
We are currently just using the NetApp box for some binaries groups. Our settings are:
===== OPTIONS ===== autosupport.doit WEEKLY_LOG autosupport.enable on autosupport.mailhost mailhost autosupport.noteto ccaputo@alt.net autosupport.to ccaputo@alt.net autosupport.from autosupport df_2gb_lim off httpd.admin.enable on httpd.enable off httpd.log.max_file_size 2147483647 httpd.rootdir XXX httpd.timeout 900 httpd.timewait.enable off ip.path_mtu_discovery.enable on minra off mount_rootonly on nfs.big_endianize_fileid off nfs.per_client_stats.enable off nfs.tcp.enable on nfs.v3.enable on no_atime_update on nosnap off nosnapdir off pcnfsd.enable off raidtimeout 4294967295 raid.reconstruct_speed 4 raid.scrub.enable on root_only_chown on telnet.hosts * wafl.maxdirsize 10240
===== SNAP-SCHED ===== 0 0 0 0
For security reasons our NetApp is assigned to private address space (10.x.x.x, RFC1918) so it can't been seen from the rest of the net. If you are exposed to the net, you might to do that. Any client machines would also need to be using 10.x.x.x addresses in addition to their normal reachable addresses.
Our raidtimeout is set to max since we don't ever want the machine to stop running, after it loses a disk. We'll just get it a new disk quickly. Having it stop is not an option.
To NetApp - Make these things cheaper so we can buy more. Their really good, but a dollar a meg is too high when the non-raid market is at $0.1 per meg. Also, make it so those extra PCI slots can be used for more SCSI cards, even on the low end machines. When you can't do things like this it really makes the company seem like it is driven by marketing droids obsessed only with competing with Auspex.
Chris