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13518 discussions

Re: Single vs. dual shelf performance on F230
by sirbruce＠ix.netcom.com 24 Sep '97

24 Sep '97

On 09/24/97 19:00:24 you wrote: > > If I had an F230 with, say, 6 drives, would I see any significant >performance gain by placing 3 drives per shelf, rather than having all >6 drives on one shelf (and thus one controller)? This will be for >heavily randomized file accesses (e.g., mail or news spool). You might see a minor performance improvement. I think the last time this sort of thing was measured it was reported to be negligible, and didn't really appear until you had 4 or 5 drives on one controller. But this was with different controllers, different drives, etc. so it may no longer apply. It probably can't hurt, and would certainly be worth trying. (Especially with random access... I suppose with a nice layout with good striping, it might be preferable to read it all from one controller at once... not sure how these things are handled at the low level.) Bruce

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CIFS and NIS experiences?
by Daniel Quinlan 24 Sep '97

24 Sep '97

We're going to be using CIFS on our filers and I would like to hear about anyone's experiences with CIFS especially using it under NIS. I tried briefly enabling CIFS about a month ago on one of our filers, using NIS, and it worked, but the filer started having problems only a few minutes later, so I disabled CIFS and NIS. The problems were pretty severe ... of the "did someone shut nfs off?" variety, but I didn't have much of a chance to investigate. We are running 4.1d. We're using Solaris boxes as NIS servers. For my next try at CIFS, I'm thinking about not using NIS and just using a text copy of the passwd and group files. Has anyone else tried and/or had problems with CIFS under NIS? -- Daniel Quinlan (at work) Linux, our last best hope for Unix quinlan(a)transmeta.com http://www.pathname.com/~quinlan/

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request
by David Drum 23 Sep '97

23 Sep '97

Hello, Since I know NetApp people are listening... I'd like to be able to use backslash line-continuation in the /etc files, e.g. /patches/Solaris_2.5.1_x86_Patches -ro,access=allinger.apg.more.net:\ b5fan.apg.more.net This ought not be too difficult to support in a future release. Regards, David K. Drum david(a)more.net -- It's hard to be bored when you're as stupid as a line. [1] Reality has a tendency to be so uncomfortably real. [2] You can only measure the size of your head from the inside. [3] When you proceed deliberately, mistakes don't cascade, they instruct. [4] [1] Vernor Vinge [2] Neil Peart [3] Larry Wall [4] Stewart Brand

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seeing constant not responding messages
by Chris Caputo 21 Sep '97

21 Sep '97

I just the sent the following to support@netapp, but was also curious if anyone here had any insight. Is everyone on 4.1d happy? Chris ---------- Forwarded message ---------- Date: Thu, 18 Sep 1997 11:47:53 -0700 (PDT) From: Chris Caputo <ccaputo(a)alt.net> To: support(a)netapp.com Hi. We constantly (several times a minute) get the following and I have a feeling (because the drive lights go dark) it is affecting the performance of our NetApp box. At some point discussion on the toasters mailing list made me think that this was something that was going to be fixed after 4.0.1c, which is what we are running. Can you let us know if this is fixed in 4.1d? Should we upgrade regardless? Thanks, Chris Caputo President, Altopia Corporation PS: Here are the messages - they happen all of the time... Sep 18 11:43:51 tofu kernel: nfs server netapp1.alt.net:/home: not responding Sep 18 11:43:52 tofu kernel: nfs server netapp1.alt.net:/home: is alive again Sep 18 11:43:55 tofu kernel: nfs server netapp1.alt.net:/home: not responding Sep 18 11:43:56 tofu kernel: nfs server netapp1.alt.net:/home: is alive again Sep 18 11:43:57 tofu kernel: nfs server netapp1.alt.net:/home: not responding Sep 18 11:43:57 tofu kernel: nfs server netapp1.alt.net:/home: is alive again Sep 18 11:43:59 tofu kernel: nfs server netapp1.alt.net:/home: not responding Sep 18 11:43:59 tofu kernel: nfs server netapp1.alt.net:/home: is alive again Sep 18 11:44:03 tofu kernel: nfs server netapp1.alt.net:/home: not responding Sep 18 11:44:04 tofu kernel: nfs server netapp1.alt.net:/home: is alive again Sep 18 11:44:07 tofu kernel: nfs server netapp1.alt.net:/home: not responding Sep 18 11:44:07 tofu kernel: nfs server netapp1.alt.net:/home: is alive again Sep 18 11:44:08 tofu kernel: nfs server netapp1.alt.net:/home: not responding Sep 18 11:44:08 tofu kernel: nfs server netapp1.alt.net:/home: is alive again Sep 18 11:44:09 tofu kernel: nfs server netapp1.alt.net:/home: not responding Sep 18 11:44:09 tofu kernel: nfs server netapp1.alt.net:/home: is alive again Sep 18 11:44:11 tofu kernel: nfs server netapp1.alt.net:/home: not responding Sep 18 11:44:12 tofu kernel: nfs server netapp1.alt.net:/home: is alive again Sep 18 11:44:14 tofu kernel: nfs server netapp1.alt.net:/home: not responding Sep 18 11:44:14 tofu kernel: nfs server netapp1.alt.net:/home: is alive again Sep 18 11:44:21 tofu kernel: nfs server netapp1.alt.net:/home: not responding Sep 18 11:44:21 tofu kernel: nfs server netapp1.alt.net:/home: is alive again Sep 18 11:44:25 tofu kernel: nfs server netapp1.alt.net:/home: not responding Sep 18 11:44:25 tofu kernel: nfs server netapp1.alt.net:/home: is alive again Sep 18 11:44:26 tofu kernel: nfs server netapp1.alt.net:/home: not responding Sep 18 11:44:26 tofu kernel: nfs server netapp1.alt.net:/home: is alive again Sep 18 11:44:30 tofu kernel: nfs server netapp1.alt.net:/home: not responding Sep 18 11:44:30 tofu kernel: nfs server netapp1.alt.net:/home: is alive again Sep 18 11:44:32 tofu kernel: nfs server netapp1.alt.net:/home: not responding Sep 18 11:44:33 tofu kernel: nfs server netapp1.alt.net:/home: is alive again Sep 18 11:44:36 tofu kernel: nfs server netapp1.alt.net:/home: not responding Sep 18 11:44:36 tofu kernel: nfs server netapp1.alt.net:/home: is alive again Sep 18 11:44:36 tofu kernel: nfs server netapp1.alt.net:/home: not responding Sep 18 11:44:37 tofu kernel: nfs server netapp1.alt.net:/home: is alive again Sep 18 11:44:39 tofu kernel: nfs server netapp1.alt.net:/home: not responding Sep 18 11:44:39 tofu kernel: nfs server netapp1.alt.net:/home: is alive again Sep 18 11:44:40 tofu kernel: nfs server netapp1.alt.net:/home: not responding Sep 18 11:44:40 tofu kernel: nfs server netapp1.alt.net:/home: is alive again Sep 18 11:44:42 tofu kernel: nfs server netapp1.alt.net:/home: not responding Sep 18 11:44:42 tofu kernel: nfs server netapp1.alt.net:/home: is alive again Sep 18 11:44:43 tofu kernel: nfs server netapp1.alt.net:/home: not responding Sep 18 11:44:44 tofu kernel: nfs server netapp1.alt.net:/home: is alive again Sep 18 11:44:44 tofu kernel: nfs server netapp1.alt.net:/home: not responding Sep 18 11:44:45 tofu kernel: nfs server netapp1.alt.net:/home: is alive again Sep 18 11:44:49 tofu kernel: nfs server netapp1.alt.net:/home: not responding Sep 18 11:44:49 tofu kernel: nfs server netapp1.alt.net:/home: is alive again Sep 18 11:44:51 tofu kernel: nfs server netapp1.alt.net:/home: not responding Sep 18 11:44:51 tofu kernel: nfs server netapp1.alt.net:/home: is alive again Sep 18 11:44:56 tofu kernel: nfs server netapp1.alt.net:/home: not responding Sep 18 11:44:56 tofu kernel: nfs server netapp1.alt.net:/home: is alive again Sep 18 11:45:01 tofu kernel: nfs server netapp1.alt.net:/home: not responding Sep 18 11:45:01 tofu kernel: nfs server netapp1.alt.net:/home: is alive again Sep 18 11:45:01 tofu kernel: nfs server netapp1.alt.net:/home: not responding Sep 18 11:45:02 tofu kernel: nfs server netapp1.alt.net:/home: is alive again Sep 18 11:45:03 tofu kernel: nfs server netapp1.alt.net:/home: not responding Sep 18 11:45:03 tofu kernel: nfs server netapp1.alt.net:/home: is alive again Sep 18 11:45:04 tofu kernel: nfs server netapp1.alt.net:/home: not responding Sep 18 11:45:05 tofu kernel: nfs server netapp1.alt.net:/home: is alive again Sep 18 11:45:06 tofu kernel: nfs server netapp1.alt.net:/home: not responding Sep 18 11:45:06 tofu kernel: nfs server netapp1.alt.net:/home: is alive again Sep 18 11:45:11 tofu kernel: nfs server netapp1.alt.net:/home: not responding Sep 18 11:45:11 tofu kernel: nfs server netapp1.alt.net:/home: is alive again Sep 18 11:45:15 tofu kernel: nfs server netapp1.alt.net:/home: not responding Sep 18 11:45:16 tofu kernel: nfs server netapp1.alt.net:/home: is alive again Sep 18 11:45:19 tofu kernel: nfs server netapp1.alt.net:/home: not responding Sep 18 11:45:19 tofu kernel: nfs server netapp1.alt.net:/home: is alive again Sep 18 11:45:24 tofu kernel: nfs server netapp1.alt.net:/home: not responding Sep 18 11:45:24 tofu kernel: nfs server netapp1.alt.net:/home: is alive again Sep 18 11:45:30 tofu kernel: nfs server netapp1.alt.net:/home: not responding Sep 18 11:45:30 tofu kernel: nfs server netapp1.alt.net:/home: is alive again Sep 18 11:45:30 tofu kernel: nfs server netapp1.alt.net:/home: not responding Sep 18 11:45:30 tofu kernel: nfs server netapp1.alt.net:/home: is alive again Sep 18 11:45:35 tofu kernel: nfs server netapp1.alt.net:/home: not responding Sep 18 11:45:35 tofu kernel: nfs server netapp1.alt.net:/home: is alive again Sep 18 11:45:41 tofu kernel: nfs server netapp1.alt.net:/home: not responding Sep 18 11:45:42 tofu kernel: nfs server netapp1.alt.net:/home: is alive again Sep 18 11:45:47 tofu kernel: nfs server netapp1.alt.net:/home: not responding Sep 18 11:45:48 tofu kernel: nfs server netapp1.alt.net:/home: is alive again Sep 18 11:45:48 tofu kernel: nfs server netapp1.alt.net:/home: is alive again Sep 18 11:45:49 tofu kernel: nfs server netapp1.alt.net:/home: not responding Sep 18 11:45:49 tofu kernel: nfs server netapp1.alt.net:/home: is alive again Sep 18 11:45:50 tofu kernel: nfs server netapp1.alt.net:/home: not responding Sep 18 11:45:50 tofu kernel: nfs server netapp1.alt.net:/home: not responding Sep 18 11:45:50 tofu kernel: nfs server netapp1.alt.net:/home: is alive again Sep 18 11:46:04 tofu kernel: nfs server netapp1.alt.net:/home: not responding Sep 18 11:46:05 tofu kernel: nfs server netapp1.alt.net:/home: is alive again Sep 18 11:46:13 tofu kernel: nfs server netapp1.alt.net:/home: not responding Sep 18 11:46:13 tofu kernel: nfs server netapp1.alt.net:/home: is alive again Sep 18 11:46:15 tofu kernel: nfs server netapp1.alt.net:/home: not responding Sep 18 11:46:15 tofu kernel: nfs server netapp1.alt.net:/home: is alive again Sep 18 11:46:33 tofu kernel: nfs server netapp1.alt.net:/home: not responding Sep 18 11:46:33 tofu kernel: nfs server netapp1.alt.net:/home: is alive again Sep 18 11:46:39 tofu kernel: nfs server netapp1.alt.net:/home: not responding Sep 18 11:46:40 tofu kernel: nfs server netapp1.alt.net:/home: is alive again Sep 18 11:46:42 tofu kernel: nfs server netapp1.alt.net:/home: not responding Sep 18 11:46:42 tofu kernel: nfs server netapp1.alt.net:/home: is alive again Sep 18 11:46:43 tofu kernel: nfs server netapp1.alt.net:/home: not responding Sep 18 11:46:43 tofu kernel: nfs server netapp1.alt.net:/home: is alive again Sep 18 11:46:44 tofu kernel: nfs server netapp1.alt.net:/home: not responding Sep 18 11:46:44 tofu kernel: nfs server netapp1.alt.net:/home: is alive again

3 5

NetApp for mail spool?
by Gregory Gulik 18 Sep '97

18 Sep '97

I have a feeling this topic has been discussed to death, but here goes anyway: Has anyone had luck with using a NetApp for a mail spool? We did some tests, and although the locking worked fine most of the time, we did find that it dropped some messages for no reason whatsoever. In our case, the client machines are SPARCs running Solaris 2.5.1 Is there a problem with the locking on the NetApp, or are the Solaris libraries lying about the locks being in place and the writes taking place properly?

5 4

Re: NetApp for mail spool?
by Gregory Gulik 17 Sep '97

17 Sep '97

Do you have recommendations on where to find examples of code that incorporates this stonger locking you mention? -----Original Message----- From: David Schairer <njal(a)concentric.net> To: matthew zeier <mrz(a)3com.com> Cc: madhatta(a)mathworks.com <madhatta(a)mathworks.com>; greg(a)wwa.com <greg(a)wwa.com>; toasters(a)mathworks.com <toasters(a)mathworks.com> Date: Wednesday, September 17, 1997 5:57 PM Subject: Re: NetApp for mail spool?

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"Interrupted system call" to F230 news spool
by Brian Tao 17 Sep '97

17 Sep '97

One of my inn 1.4unoff4 news reader servers started throttling itself just today with "Interrupted system call writing article file" (happened twice in the past 24 hours). The spool is on an F230 running 4.0.3, 256MB of read cache and 4MB of write cache. The news server is an Ultra 170, 512MB of RAM, ~250 to 300 readers around peak times. The two are on a FDDI ring. The F230 hovers around 65% CPU usage, so I don't think that's the problem, but the Ultra is reporting 900 to 1200 packets per second both in and out of its FDDI interface. Half of its time is spent in the kernel, according to top(1). The mounts are NFSv3 over UDP. Would dropping back down to NFSv2 help any? I'm trying to determine if this is a network congestion problem, or an OS limitation (on either the Netapp or the Sun). -- Brian Tao (BT300, taob(a)netcom.ca) "Though this be madness, yet there is method in't"

3 3

Filer response time
by Dave Heiland 15 Sep '97

15 Sep '97

I'm looking for a way to monitor the performance of my F630 filer, in addition to checking cpu levels, network traffic or other information provided by sysstat. Specifically, since the LADDIS benchmarks plot nfs ops versus response time, I was wondering how I can check the response time of my filer from the client's perspective. Is it just a matter of running nfsstat -m on clients and checking the round-trip times, or is there another command or program that can be used? Dave -- David J. Heiland Lucent Technologies dheiland(a)lucent.com CIO Department Malmesbury, England

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Pardon my ignorance
by Kevin L. Gross 11 Sep '97

11 Sep '97

Sorry to send to the entire list, but I can't find the original message from this list telling me how to get off of it, if there was one. Could some kind soul overlook my ignorance and tell me the address to send to in order to remove myself from this list? Thanks, -Kevin

2 1

Re: snapshot scheduling
by mds46523＠ggr.co.uk 11 Sep '97

11 Sep '97

This sounds like another task that would be easier if we could load servlets onto the filers. On Sep 11, 6:05, Daniel Quinlan wrote: > Subject: snapshot scheduling > One of our filers has high data turn-around so I have limited the > snapshot lifetime to 2 days (the default) to keep usage at about 10%. > We use 4 days on our other filer because it experiences a lower rate of > data turn-around. > > > snap list > working........................ > %/used %/total date name > ---------- ---------- ------------ -------- > 1% ( 1%) 0% ( 0%) Sep 10 20:01 hourly.0 > 3% ( 3%) 2% ( 2%) Sep 10 16:01 hourly.1 > 5% ( 3%) 4% ( 2%) Sep 10 12:01 hourly.2 > 6% ( 3%) 5% ( 2%) Sep 10 08:01 hourly.3 > 8% ( 4%) 6% ( 3%) Sep 10 00:01 nightly.0 > 8% ( 4%) 6% ( 3%) Sep 09 20:01 hourly.4 > 10% ( 4%) 7% ( 3%) Sep 09 16:02 hourly.5 > 12% ( 5%) 10% ( 3%) Sep 09 00:01 nightly.1 > > Unfortunately, 2 days means that if someone deletes a file on Friday, it > will be gone by the next work day, Monday. There is also a lower rate > of data turn-around on the weekend. 3 days would be ideal, except on > weekdays where it can sometimes push the snapshot usage higher than I > want. > > Is there some way (other than a remote cron job twice a week) to acheive > what I want -- variable snapshot lifetimes according to the day of the > week? > > If not, it would be a nice feature. Either that, or options to force > deletion of n number of nightly snapshots (over m days old) when > snapshot usage goes over some percentage. > > Dan > > -- > Daniel Quinlan (at work) Linux, our last best hope for Unix > quinlan(a)transmeta.com http://www.pathname.com/~quinlan/ > ... > (Got BOFH? Looking for good ones.) >-- End of excerpt from Daniel Quinlan -- -Mark, TSG Unix admin and support, int 782 4412, ext +44 1438 76 4412. PTP: What sheeplike qualities should you be developing?

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