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DU lying on sunos5 machines (update)
by Jim Fondren 20 Mar '97

20 Mar '97

Thankyou to all that responded. Your hints let met get closer to a solution. http://puma.join.ad.jp/tech/faq-e/sun/solaris2/Q5.51.html ...contains a related reference and mentions a patch to 2.5, 103226 (SPARC). Apparently solaris 2.5.1 doesn't have this bug (and I verified that on one of my 2.5.1 boxes). Thanks again, ----------------------- Jim.Fondren(a)PoBox.Com --------------------------- Jim Fondren Unix Systems and GIS Programming jim(a)cartotech.com CARTOTECH 210-657-1500 11900 Crownpoint Suite 100 San Antonio, TX 78233 USA

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Re: "DU" lying on sunos5 machines
by Ketil Kirkerud 20 Mar '97

20 Mar '97

Jim Fondren <jim(a)cartotech.com> writes: > > Hello, > > I sent the following report to support but also wanted to ask the > user community about this... > > The unix "du" command is lying to me on Sunos5 machines... Theis is a known bug in SunOS 5.? Their nfs client/server code has a bug in it that makes du report wrongly. There are patches available. (I can't remember offhand what their IDs are, though) regards, ---Ketil Kirkerud, Scandinavia Online

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Write operations using NFS v2?
by Ragnar Lonn 18 Mar '97

18 Mar '97

Hello, Thought I'd try out this list in the hope of sharing some info with others as opposed to bugging NetApp support only for my own sake ;) (but I'll CC them at least) I'm setting up an F540 as a newsspool NFS server. That is, I will store Usenet news articles on it. A handful of machines will mount the filesystem read-only and these machines will accept user newsreader connections. Then I will have one single machine that mount the filesystem read/write - it will be the machine that stores incoming articles and removes old ones from the filer. Now, for news I've got the advice to use NFS v2 because clients using v3 issue the readdir+ operation unique to v3 and this operation does some extra stuff (as opposed to v2's readdir) that most applications take advantage of but news software (INN nnrpd) has no use of the extra data returned by readdir+ and this makes it a performance loss to use v3 in this particular case. But... I've read that NFS writes are much faster in NFS v3 than v2. This, of course, leads me to my question (ta-daa) : Actually, I'll make it two questions. If the anser to the first one is no, the second one is not so interesting anymore ;) 1. Are write operations slower on a NetApp server if you use NFS v2 compared to when you're using NFS v3? (and if so, about how much does it differ?) 2. (if the answer to the above question was 'yes') Could I leave the option "nfs.v3.enable" ON, on the NetApp and mount the filesystem from the reader clients using e.g "mount -o vers=2,proto=udp" (can't remember the exact syntax) while at the same time, from the client that is supposed to be doing a lot of *writing* to the NetApp, mount using version 3 to speed up the writes? This machine won't be running nnrpd so it won't be doing any readdir+ in vain. Regards, /Ragnar, Algonet

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Re: Write operations using NFS v2?
by sthaug＠nethelp.no 18 Mar '97

18 Mar '97

> Maybe this doesn't matter much if there's no performance advantage > in general to using v3 instead of v2 of course... Then there's > no reason for me to bother about v3 at all as I'm only going to > use the NetApp as a newsspool host and nothing else. I'm going to turn off v3 on our NetApp box tonight, just to see how much of a difference it makes. Another thing I've been wondering about is options.minra. I find the documentation a bit thin, shall we say. If the 'aggressive read ahead' mentioned in the documentation is *per file*, it's probably a good thing for a NetApp used as a News spool - since you normally retrieve a whole article at a time. If the read ahead is based on something other than file, I'm not so sure. Anybody played with minra on a NetApp news spool? Steinar Haug, Nethelp consulting, sthaug(a)nethelp.no

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Re: NFS v2 works okay, but statvfs won't tell me about inodes
by sthaug＠nethelp.no 17 Mar '97

17 Mar '97

> > I can of course telnet to the NetApp and check the number of inodes > > directly, but I'd like to do it from the Solaris box which feeds the > > NetApp with news articles. Any good suggestions? > > I ran into the situation running inn on our Solaris machine, because it > tries to do a df -i on the spool directory. They changed df so that it > won't allow -i at all on an NFS mounted filesystem! I never tried a > statvfs call directly to see if that would work... I had assumed it > wouldn't work for v3 either. Well, it does - as long as you call statvfs directly with your own program, of course. > I just commented out the df -i check in inn and made sure I had enough > inodes on the filer. I didn't pick a *huge* value, but about double what > I needed. Yes, this is what I'm currently doing. Steinar Haug, Nethelp consulting, sthaug(a)nethelp.no

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NFS v2 significantly faster for News expire
by sthaug＠nethelp.no 17 Mar '97

17 Mar '97

I switched our NetApp box to NFS v2 last night, and it *does* make a difference. It's a bit early to draw firm conclusions after only one expire run, but so far it looks like I cut my expire time with a whole hour. Nice! It's particularly noticeable during the 'fastrm' and 'renumber' phases. Steinar Haug, Nethelp consulting, sthaug(a)nethelp.no

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NFS v2 works okay, but statvfs won't tell me about inodes
by sthaug＠nethelp.no 17 Mar '97

17 Mar '97

Today I switched our F330 from NFS v3 to v2, since it's being used as a News spool and can't really do anything useful with the extra NFS v3 info. I got a nasty surprise when I found out that the Solaris 2.5.1 statvfs system call no longer returned number of inodes. In fact the fields u_long f_files; /* total # of file nodes (inodes) */ u_long f_ffree; /* total # of free file nodes */ u_long f_favail; /* # of free nodes avail to non-superuser */ are all set to 4294967295 (ie. -1) on return from statvfs. When I was using NFS v3, these fields had sensible values on return from the call. I can of course telnet to the NetApp and check the number of inodes directly, but I'd like to do it from the Solaris box which feeds the NetApp with news articles. Any good suggestions? Steinar Haug, Nethelp consulting, sthaug(a)nethelp.no

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Re: head count
by sthaug＠nethelp.no 13 Mar '97

13 Mar '97

> how does one test for a shortage of NVRAM? Run 'sysstat 1'. If the writes are spaced out (there are intervals with no writes), you probably have enough NVRAM. If you have continuous writes, you probably need more NVRAM. Steinar Haug, Nethelp consulting, sthaug(a)nethelp.no

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head count
by Tom Yates 13 Mar '97

13 Mar '97

anyone here using a toaster to serve /var/spool/mail, including to a mail gateway machine (ie, not just for reading)? any comments thereon? particularly, what flavour of toaster, how configured, and roughly how many mail users. Tom Yates - Unix Chap - The Mathworks, Inc. - +1 (508) 647 7561 MAG#65061 DoD#0135 AMA#461546 1024/CFDFDE39 0C E7 46 60 BB 96 87 05 04 BD FB F8 BB 20 C1 8C by the way, hello and welcome to all toaster owners out there. also to the many people from netapp who've subscribed to this list, for which, many thanks. hopefully this will be an information conduit without being a high-volume pain-in-the-bum.

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Re: head count (fwd)
by Tom Yates 13 Mar '97

13 Mar '97

forwarded with permission ---------- Forwarded message ---------- Date: Wed, 12 Mar 1997 12:38:36 -0600 From: christopher williams <cgw(a)yoyodyne.io.com> To: Tom Yates <madhatta(a)mathworks.com> Cc: christopher williams <cgw(a)io.com> Subject: Re: head count No, but I'd sure *like* to. I had plans to get an F220 to replace the Solstice ODS software-raid system we're using for mail now. We currently support 5700+ users (with a SS10 that has a 125mHz HyperSparc, and 3 pop/imap servers that mount the mail spool from the mailhub). Those plans got ixnayed (due to money concerns, feh!) and now we're looking at getting an ALR PPro 200mHz running Solaris x86 with one of ALR's recommended hardware raid cards. Definitely _definitely_ not my choice. *sigh* I didn't reply to the list 'cos this prolly wouldn't be very useful to them. I just thought I'd reply to give my support for the idea; I don't know how well it works, but I suspect that it will work *very* well!!! I'd go with an F220 at the minimum, unless you can afford the 330 already (they're trivial to upgrade, so buying an F220 is a cheaper alternative). Depending on how many users you're going to have, I'd also recommend getting 4mb NVRAM. -cgw- -- christopher williams 512.462.0999 fall seven times cgw(a)io.com sen sys eng fnord stand up eight In message <Pine.GSO.3.95.970226112407.19938G-100000@sproing>, you write: > anyone here using a toaster to serve /var/spool/mail, including to a mail > gateway machine (ie, not just for reading)? > > any comments thereon? particularly, what flavour of toaster, how > configured, and roughly how many mail users.

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