toasters August 2001

toasters@lists.teaparty.net

122 participants
161 discussions

virus protection on Filer
by Edward Lee 21 Aug '01

21 Aug '01

Can anyone recommend a good antivirus program that can do real-time scans of the Filer. I have a 760 and running version 6.1 Thanks, -Eddie _________________________________________________________________ Get your FREE download of MSN Explorer at http://explorer.msn.com/intl.asp

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Solaris/Oracle/filer tuning question
by Chris Lamb 21 Aug '01

21 Aug '01

Howdy, all. This is more a Solaris question, but since there's a filer involved and y'all are so helpful, I'll start with you guys. :-) The setup: Sun E4500, Solaris 7 HW11/99+patches, GigE NetApp F760, 5.3.6R2, GigE Oracle 8.1.6.x Two volumes for Oracle, NFSv3/UDP, 32K rsize/wsize The problem(s): I/O from any single Oracle process tops out around 3-4MB/sec; Even with 'disk_asynch_io = false' in init.ora set to false, we are getting sporadic and seemingly nonsensical "resource temporarily unavailable" errors (had a case open for this one). The question: Are any of the Solaris kernel NFS tunables useful in increasing that apparent limit? Specifically: nfs:nfs3_max_threads nfs:nfs3_async_clusters nfs:nfs3_nra The DBA and our NetApp reps/support team have gone over our config, and things are generally stable. After turning off asynch_io we noticed a slight performance hit, but thought that the annoying "resource temporarily unavailable" errors had been solved. We had another one yesterday, first time in almost two months. :-/ In diagnosing the performance sluggishness, we noticed that for a non-partitioned full table scan a single Oracle "reader" process was limited to about 2.5-4MB/sec, while a full scan of a partitioned table (using 6 readers) was getting 18-22MB/sec. (Obvious workaround: increase the number of readers and writers, and partition the table with the bottleneck...) In each case, Solaris iostat was claiming that the NFS mount was "100% busy", although response times were generally in the sub-6ms range and the filer's sysstat showed less than 20% cpu usage (this is a production box, so I can't completely isolate the load for our testing). For _reads_ I just can't figure out why Solaris - or Oracle itself - are throttling performance like this... I've clocked > 50MB/sec reads in plain old NFS tests (bonnie, cpio, etc), and I think it's generally clear when we've saturated the PCI bus on the filer. This Oracle bottleneck is a mystery, but now I'm wondering if the two problems are related. The Solaris Tunable Parameters Reference Manual says of the "nfs:nfs3_max_threads" knob: "Controls the number of kernel threads that perform asynchronous I/O for the NFS version 3 _client_. [emphasis mine] Since NFS is based on RPC and RPC is inherently synchronous, separate execution contexts are required to perform NFS operations that are asynchronous from the calling thread." The default pool of threads is set to 8. There's some indication that this may be a _per filesystem_ setting, and is not global to all NFS client activity on the machine. Even if that's the case, then 8 threads per mount point might still be fairly restrictive on an 8-cpu machine, given the fat pipe and headroom still available on the filer. I generally shy away from mucking about with Solaris internals ("this isn't your father's SunOS" :-) but if that's what it takes to boost performance I'm all for it. Has anyone running in a similar environment had to tweak any Solaris kernel tunables? Are there other Oracle/NetApp tuning hints not discussed in the whitepapers on the NOW site? My DBA and I would be most grateful for any warnings/suggestions/hints. :-) I'll be happy to provide more detail off-list, then summarize results if anyone else is interested. Thanks, -- Chris -- Chris Lamb, Unix Guy MeasureCast, Inc. 503-241-1469 x247 <skeezics(a)measurecast.com>

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RE: DOT 6.1.1 + NBU 4.6 == /vol/vol0 path may not exist
by Smith, A Michael (CS) 20 Aug '01

20 Aug '01

Is /vol/vol0 on your machine a snapmirror destination? If so try backing up an existing snapshot as ndmpd will not be able to create a snapshot for dump on a snapmirrored volume. The path that I use in the Backup Policy Mgmt interface under the policy of my choice I simply change the entry from "/vol/vol2" to "/vol/vol2/.snapshot/hourly.0" and bada-bing it worked. If it is not snapmirrored then another test to try would be to run a manual dump of /vol/vol0 and send the output to null: dump 0f null /vol/vol0 The output of that command will be useful for NetApp support folks. Mike Smith -----Original Message----- From: Jeffrey Krueger [mailto:jkrueger@qualcomm.com] Sent: Monday, August 20, 2001 10:41 AM To: toasters(a)mathworks.com Subject: DOT 6.1.1 + NBU 4.6 == /vol/vol0 path may not exist Anyone else having difficulty backing up /vol/vol0 with Veritas after upgrading to DOT 6.1.1? We get the following error message: 0997254443 1 4 8 claxton 750651 750651 0 fuelcell bptm WRN - Cannot backup filepath /vol/vol0, NDMP_HALT_INTERNAL_ERROR occurred (path may not exist), skipping We also found this upon deeper investigation: Aug 10 21:02:15 GMT [ndmpd:52]: ReplySequence 0 Aug 10 21:02:15 GMT [ndmpd:52]: Error NDMP_NO_ERR Aug 10 21:02:15 GMT [ndmpd:52]: Log message: Cannot backup WAFL directory -- memory management problem. Here's the interesting rub: other volumes on that machine (/vol/root and /vol/vol1) backup just fine. /vol/vol0 won't backup to a local tape drive, or remote via NDMP 3-way. This has manifested itself on more than one machine, but not all 6.1.1 filers. Really strange. We're submitting a case to NetApp, but just wondering if we're the only ones seeing this problem. -- Jeff -- ---------------------------------------------------------------------------- Jeff Krueger, NetApp CA E-Mail: jeff(a)qualcomm.com Senior Engineer Phone: 858-651-6709 Storage Lead (NAS/SAN) Fax: 858-651-6627 QUALCOMM, Inc. IT Engineering Web: www.qualcomm.com

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DOT 6.1.1 + NBU 4.6 == /vol/vol0 path may not exist
by Jeffrey Krueger 20 Aug '01

20 Aug '01

Anyone else having difficulty backing up /vol/vol0 with Veritas after upgrading to DOT 6.1.1? We get the following error message: 0997254443 1 4 8 claxton 750651 750651 0 fuelcell bptm WRN - Cannot backup filepath /vol/vol0, NDMP_HALT_INTERNAL_ERROR occurred (path may not exist), skipping We also found this upon deeper investigation: Aug 10 21:02:15 GMT [ndmpd:52]: ReplySequence 0 Aug 10 21:02:15 GMT [ndmpd:52]: Error NDMP_NO_ERR Aug 10 21:02:15 GMT [ndmpd:52]: Log message: Cannot backup WAFL directory -- memory management problem. Here's the interesting rub: other volumes on that machine (/vol/root and /vol/vol1) backup just fine. /vol/vol0 won't backup to a local tape drive, or remote via NDMP 3-way. This has manifested itself on more than one machine, but not all 6.1.1 filers. Really strange. We're submitting a case to NetApp, but just wondering if we're the only ones seeing this problem. -- Jeff -- ---------------------------------------------------------------------------- Jeff Krueger, NetApp CA E-Mail: jeff(a)qualcomm.com Senior Engineer Phone: 858-651-6709 Storage Lead (NAS/SAN) Fax: 858-651-6627 QUALCOMM, Inc. IT Engineering Web: www.qualcomm.com

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Benchmarks
by Joe Luchtenberg 20 Aug '01

20 Aug '01

SPEC pulled the benchmark (SPECsfs97) that NetApp has used for so long as the yardstick for their screaming performance (see http://www.spec.org/osg/sfs97/sfs97_notice.html). As far as I can tell, there is no replacement from SPEC. Curiosity question: Do any of you out there in toasterland use published benchmark statistics in order to at least narrow the field when considering future storage options? If so, how does this development effect you? Joe Luchtenberg Dataline, Inc. 757-858-0600 757-285-1223 (mobile) 757-858-0606 (fax) joe.luchtenberg(a)data-line.com www.data-line.com

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VSCAN Timeouts
by Honeycutt, Michael 20 Aug '01

20 Aug '01

Does anyone know if you can change the time out for vscan requests? Come to think of it, does anyone know what the time out duration is? Michael Honeycutt MCSE/A+ Systems Engineer IBM Global Services

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RE: ndmpcopy problem
by Fox, Adam 17 Aug '01

17 Aug '01

Hmm..I haven't seen my one with an attachement come through, maybe the list doesn't allow it so I'll just post it in text here..it's not really that big. Enjoy! -- Adam Fox NetApp Professional Services, NC adamfox(a)netapp.com ## ## Copyright (c) 1999 Network Appliance, Inc. All Rights Reserved. ## ## Permission is hereby granted, free of charge, to any person obtaining ## a copy of this software and associated documentation files (the ## "Software"), to deal in the Software without restriction, including ## without limitation the rights to use, copy, modify, merge, publish, ## distribute, sublicense, and/or sell copies of the Software, and to ## permit persons to whom the Software is furnished to do so, subject to ## the following conditions: ## ## The above copyright notice and this permission notice shall be included ## in all copies or substantial portions of the Software. ## ## THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS ## OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, ## FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL ## THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER ## LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING ## FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER ## DEALINGS IN THE SOFTWARE. ## SUBDIRS= lib src TARGETS = all clean $(TARGETS):: for i in $(SUBDIRS); do cd $$i ; $(MAKE) $@ || exit 1; cd .. ;done > -----Original Message----- > From: Fox, Adam [mailto:Adam.Fox@netapp.com] > Sent: Friday, August 17, 2001 1:47 PM > To: 'Jim Davis'; neil lehrer > Cc: toasters > Subject: RE: ndmpcopy problem > > > That's basically what I did with the version I > attached on my last message. I hacked out that > version a month or two ago when a TSE had a call > with that issue so I wrote it up. It's a pretty > simple change. > > -- Adam Fox > NetApp Professional Services, NC > adamfox(a)netapp.com > > > > > -----Original Message----- > > From: Jim Davis [mailto:jdavis@cs.arizona.edu] > > Sent: Friday, August 17, 2001 1:07 PM > > To: neil lehrer > > Cc: toasters > > Subject: Re: ndmpcopy problem > > > > > > On Fri, 17 Aug 2001, neil lehrer wrote: > > > > > hi, > > > > > > i downloaded ndmpcopy 1.2 from ndmp.org > > > > > > when i first tried to make it on solaris 7 i got > > > > > > make: Fatal error: Unknown option `-C' > > > > Are you using Sun's make (/usr/ccs/bin/make)? I get a > > similar error on > > Solaris 7 with that, but it works with GNU make. > > > > The '-C' is basically just to cd to the lib and src > > subdirectories and run > > the Makefiles there, so you could modify the toplevel Makefile > > appropriately if you wanted to stick with Sun's make. > > >

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ndmpcopy problem solved
by neil lehrer 17 Aug '01

17 Aug '01

got solaris binary. also, got sun compatible makefile. thanks to everyone. -- regards +++++++++++++++++++++++++++++++++++++++++++++++++ + Neil Lehrer + + United States International Broadcasting Bureau + System Development Division + + voice 202 619-2524 + fax 202 619-3576 + nlehrer(a)ibb.gov + + " is this crisis an opportunity or just + another grab the fire extinguisher moment?" + +++++++++++++++++++++++++++++++++++++++++++++++++

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RE: ndmpcopy problem
by Fox, Adam 17 Aug '01

17 Aug '01

That's basically what I did with the version I attached on my last message. I hacked out that version a month or two ago when a TSE had a call with that issue so I wrote it up. It's a pretty simple change. -- Adam Fox NetApp Professional Services, NC adamfox(a)netapp.com > -----Original Message----- > From: Jim Davis [mailto:jdavis@cs.arizona.edu] > Sent: Friday, August 17, 2001 1:07 PM > To: neil lehrer > Cc: toasters > Subject: Re: ndmpcopy problem > > > On Fri, 17 Aug 2001, neil lehrer wrote: > > > hi, > > > > i downloaded ndmpcopy 1.2 from ndmp.org > > > > when i first tried to make it on solaris 7 i got > > > > make: Fatal error: Unknown option `-C' > > Are you using Sun's make (/usr/ccs/bin/make)? I get a > similar error on > Solaris 7 with that, but it works with GNU make. > > The '-C' is basically just to cd to the lib and src > subdirectories and run > the Makefiles there, so you could modify the toplevel Makefile > appropriately if you wanted to stick with Sun's make. >

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ndmpcopy problem
by neil lehrer 17 Aug '01

17 Aug '01

hi, i downloaded ndmpcopy 1.2 from ndmp.org when i first tried to make it on solaris 7 i got make: Fatal error: Unknown option `-C' *** Error code 1 make: Fatal error: Command failed for target `all' from the src: SUBDIRS= lib src TARGETS = all clean $(TARGETS):: for i in $(SUBDIRS); do $(MAKE) -C $$i $@ || exit 1; done removing the '-C' does not correct the problem. suggestions? -- regards

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toasters August 2001