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Crossroads Problems
by Paul Caron 01 Nov '02

01 Nov '02

We are currently trying to implement a SAN backup solution involving several F840 (ONTAP 6.2R2, latest FW) and R100 (ONTAP 6.2.1, latest FW) filers, a Brocade Silkwork 3800 switch (kernel 5.3.1, fabric OS 3.0), a Crossroads 10000, an ATL P7000 tape drive library with 8 SDLT drives, and Commvault Galaxy software (4.1.0, Build 26). We have tried firmware versions 4.03.16, 4.03.17, and 4.19 on the Crossroads 10000. The problem we are experiencing is that the devices on our filers which represent the SAN attached tape drives (shown by sysconfig -t) get randomly recreated every time the Crossroads reboots. Since we can't guarantee which devices will get assigned to which tape drive LUN, they often do not match those configured in the Commvault Galaxy backup software. The resulting mismatch causes many backup problems. It appears as though the Crossroads is not presenting the tape drives available on the ATL P7000 in the same order every time it reboots. We have read through the information available at http://www.netapp.com/osn/info/config.html#fcsan. This site shows support for the Brocade 3800. Although they do not call out support for the Crossroads 10000 specifically, they do show a wide range of options using various SCSI-FIBER bridges with a variety of libraries. The StorageTek library they show uses a Crossroads 42xx series switch. Has anyone else run into this situation? Is there any way of compensating for this on the Netapp filers? I realize that it would be better if the Crossroads would present the tape drive LUNs in the same order every time, but that doesn't appear to be configurable. It would help if we could permanently assign the devices to the tape drive LUNs on the filers. BTW, we have received suggestions regarding using the Netapp "storage alias" and "storage unalias" commands. However, since the Galaxy backup software relies on the actual device names (i.e. rst0l, nrst0l, urst0l, etc.) this hasn't helped us so far.

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Anyone seen a cp -r -p from Solaris (6) go dead slow
by Peter Bryant 01 Nov '02

01 Nov '02

*** Before acting on this e-mail or opening any attachment you are advised to read the disclaimer at the end of this e-mail *** when copying from local disk to filer mounts, or filer to filer. never happened before, but 3 times today (upgraded 6.1.2R1 to 6.2.1R2 earlier this week) Peter ******************************* Disclaimer ***************************** Confidentiality: This e-mail and any attachments are intended for the addressee(s) only and may be confidential. If they have come to you in error you must take no action based on them, nor must you copy or show them to anyone; please reply to this e-mail and highlight the error. Viruses: Although we have taken steps to ensure that this e-mail and attachments are free from any virus, we advise that in keeping with good practice the recipient should ensure they are actually virus free. ********************** http://www.burallplastec.com ********************

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RE: My F820 is slow ....
by Neil Stichbury 31 Oct '02

31 Oct '02

You said you had more than one volume ?. Were the disks all added at the same time ?. That is, you have not added a disk to an existing volume?. Is the activity read or write activity or a mix ?. Can you post up a sysstat output ?. Try using 'statit' which will indicate if a specific disk is being hammered. If this is the case then it would mean that a disk was added to the volume group after vol creation and normal stripping is not in effect. -----Original Message----- From: Mike Horwath [mailto:drechsau@visi.com] Sent: Friday, 1 November 2002 10:11 To: Mike Ball Cc: 'Pawel Rogocz'; toasters(a)mathworks.com Subject: Re: My F820 is slow .... On Thu, Oct 31, 2002 at 02:22:25PM -0600, Mike Ball wrote: > Pawel, > Are your file systems becoming full (type "df" from netapp")? > Mike Mine are at 50% in terms of disk space used. 1 volume, 12 disks, 18GB, F760, gige to client systems. I show 91-94% cache hit rate, but disk utilization is 98-100% during the business day. -- Mike Horwath Admin & Manager @ VISI.com WORK: drechsau(a)visi.com IRC: Drechsau http://www.visi.com/ HOME: drechsau(a)geeks.org The only Minnesota ISP with public statistics: http://noc.visi.com/ Garbage In -- Gospel Out. - berkeley fortune(6) ================================================================ This e-mail message has been scanned and cleared by MailMarshal at gen-i limited - http://www.gen-i.co.nz ================================================================

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RE: My F820 is slow ....
by Hill, Aaron 31 Oct '02

31 Oct '02

Hey Clarence, Filer MRTG is great, we run it now even with Datafabric Manager running as well. It isn't very good for performance analysis but great for monitoring filesystem usage and particularly snapshots if you are doing any snapmirroring. Thanks, Aaron -----Original Message----- From: Clarence Ngoh [mailto:cngoh@bigpond.net.au] Sent: Friday, November 01, 2002 9:09 AM To: Pawel Rogocz; toasters(a)mathworks.com Subject: Re: My F820 is slow .... Pawel > 3. Can disk util be monitored via SNMP ? I was not able to find anything > in the MIB provided on NOW. I do not use this tool on our filers, but you can install MRTG on a box. The instructions can be found at http://now.netapp.com/NOW/download/tools/filer-mrtg/. It "provides a current and historical view (the last day, week, month, and year) of statistics for network traffic, CPU load, disk usage, and NFS and CIFS operations." -- Clarence. > thanks, > > > Pawel

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RE: My F820 is slow ....
by Hill, Aaron 31 Oct '02

31 Oct '02

How many disk shelves have you got? How many FCAL's you got? Running any database devices on the filer? What size raid groups have you got? Especially for databases. Running any gigabit interfaces on Sun boxes? Was the system running fast for a long period then suddenly performance dropped or has it been gradual degradation? Does a netdiag -v report any unusual NFS or application errors? I have many more questions as I am going through something similar right now. Hopefully we can help each other. Thanks, Aaron -----Original Message----- From: Neil Stichbury [mailto:Neil.Stichbury@gen-i.co.nz] Sent: Friday, November 01, 2002 8:57 AM Cc: 'Pawel Rogocz'; toasters(a)mathworks.com Subject: RE: My F820 is slow .... You said you had more than one volume ?. Were the disks all added at the same time ?. That is, you have not added a disk to an existing volume?. Is the activity read or write activity or a mix ?. Can you post up a sysstat output ?. Try using 'statit' which will indicate if a specific disk is being hammered. If this is the case then it would mean that a disk was added to the volume group after vol creation and normal stripping is not in effect. -----Original Message----- From: Mike Horwath [mailto:drechsau@visi.com] Sent: Friday, 1 November 2002 10:11 To: Mike Ball Cc: 'Pawel Rogocz'; toasters(a)mathworks.com Subject: Re: My F820 is slow .... On Thu, Oct 31, 2002 at 02:22:25PM -0600, Mike Ball wrote: > Pawel, > Are your file systems becoming full (type "df" from netapp")? > Mike Mine are at 50% in terms of disk space used. 1 volume, 12 disks, 18GB, F760, gige to client systems. I show 91-94% cache hit rate, but disk utilization is 98-100% during the business day. -- Mike Horwath Admin & Manager @ VISI.com WORK: drechsau(a)visi.com IRC: Drechsau http://www.visi.com/ HOME: drechsau(a)geeks.org The only Minnesota ISP with public statistics: http://noc.visi.com/ Garbage In -- Gospel Out. - berkeley fortune(6) ================================================================ This e-mail message has been scanned and cleared by MailMarshal at gen-i limited - http://www.gen-i.co.nz ================================================================

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RE: My F820 is slow ....
by Hill, Aaron 31 Oct '02

31 Oct '02

Hi Pawel, We have an F880 (6.2.1) with about 10-20 Sun boxes connected to ours. We are experiencing the same type of slowdown and sysstat readouts. Our database volumes are running particularly slow. I am working with NetApp now to resolve this. Try the following set of commands; Go into advanced mode on the filer (telnet in) Priv set advanced *you will see a star showing advanced mode filer*> statit -b leave for a few minutes filer*>statit -enc an nfsstat -l shows a detailed usage of nfs on a per client basis This will give a detailed summary Hope it helps, Aaron -----Original Message----- From: Pawel Rogocz [mailto:pawel@rogocz.com] Sent: Friday, November 01, 2002 5:24 AM To: toasters(a)mathworks.com Subject: My F820 is slow .... I run 6.2.1 on F820 and I have bunch of Sun boxes ( around 60 ) who do NFS mounts. The filer has more than one volume and sometimes during the day the output of systat -x shows 100% disk util for a couple of minutes. 1. Is there a way to find out which volume/disk is causing bottleneck ? 2. Is there a way to find which client is causing the load to spike ? 3. Can disk util be monitored via SNMP ? I was not able to find anything in the MIB provided on NOW. thanks, Pawel --

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My F820 is slow ....
by Pawel Rogocz 31 Oct '02

31 Oct '02

I run 6.2.1 on F820 and I have bunch of Sun boxes ( around 60 ) who do NFS mounts. The filer has more than one volume and sometimes during the day the output of systat -x shows 100% disk util for a couple of minutes. 1. Is there a way to find out which volume/disk is causing bottleneck ? 2. Is there a way to find which client is causing the load to spike ? 3. Can disk util be monitored via SNMP ? I was not able to find anything in the MIB provided on NOW. thanks, Pawel --

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RE: My F820 is slow ....
by Mike Ball 31 Oct '02

31 Oct '02

Pawel, Have you grown your volumes lately? If so, how many disks did you add to the volumes when you grew them? I have seen customers who have volumes that are at 90%-95% and they add one or two disks to increase the disk space for the volume. What this does is creates a hot spot where any new writes going to those volumes only gets written to the 1 or two disks which were added = bad performance because WAFL is not able to stripe across all the disks in the volume. Mike -----Original Message----- From: Pawel Rogocz [mailto:pawel@rogocz.com] Sent: Thursday, October 31, 2002 4:16 PM To: Mike Ball; toasters(a)mathworks.com Subject: RE: My F820 is slow .... Here it is: /vol/vol1/ 338309500 292869428 45440072 87% /vol/vol1/ /vol/vol1/.snapshot 37589944 16548736 21041208 44% /vol/vol1/.snapshot /vol/vol2/ 338309500 303317696 34991804 90% /vol/vol2/ /vol/vol2/.snapshot 37589944 13034816 24555128 35% /vol/vol2/.snapshot /vol/vol0/ 50119928 1674084 48445844 3% /vol/vol0/ /vol/vol0/.snapshot 12529980 142548 12387432 1% /vol/vol0/.snapshot /vol/vol3/ 112769836 63064324 49705512 56% /vol/vol3/ /vol/vol3/.snapshot 12529980 20120056 0 161% /vol/vol3/.snapshot /vol/vol4/ 338309500 269767512 68541988 80% /vol/vol4/ /vol/vol4/.snapshot 37589944 13586164 24003780 36% /vol/vol4/.snapshot -----Original Message----- From: Mike Ball [mailto:MBall@DATALINK.com] Sent: Thursday, October 31, 2002 12:22 PM To: 'Pawel Rogocz'; toasters(a)mathworks.com Subject: RE: My F820 is slow .... Pawel, Are your file systems becoming full (type "df" from netapp")? Mike -----Original Message----- From: Pawel Rogocz [mailto:pawel@rogocz.com] Sent: Thursday, October 31, 2002 1:24 PM To: toasters(a)mathworks.com Subject: My F820 is slow .... I run 6.2.1 on F820 and I have bunch of Sun boxes ( around 60 ) who do NFS mounts. The filer has more than one volume and sometimes during the day the output of systat -x shows 100% disk util for a couple of minutes. 1. Is there a way to find out which volume/disk is causing bottleneck ? 2. Is there a way to find which client is causing the load to spike ? 3. Can disk util be monitored via SNMP ? I was not able to find anything in the MIB provided on NOW. thanks, Pawel --

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RE: My F820 is slow ....
by Mike Ball 31 Oct '02

31 Oct '02

Pawel, Are your file systems becoming full (type "df" from netapp")? Mike -----Original Message----- From: Pawel Rogocz [mailto:pawel@rogocz.com] Sent: Thursday, October 31, 2002 1:24 PM To: toasters(a)mathworks.com Subject: My F820 is slow .... I run 6.2.1 on F820 and I have bunch of Sun boxes ( around 60 ) who do NFS mounts. The filer has more than one volume and sometimes during the day the output of systat -x shows 100% disk util for a couple of minutes. 1. Is there a way to find out which volume/disk is causing bottleneck ? 2. Is there a way to find which client is causing the load to spike ? 3. Can disk util be monitored via SNMP ? I was not able to find anything in the MIB provided on NOW. thanks, Pawel --

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optimum setting for Solaris8 and nfs/netapps
by Daniel Finn 30 Oct '02

30 Oct '02

What are the best options to use when trying to get the best performance and good stability out of a Solaris8 server mounting volumes via nfs from a F740/F760? Thanks Dan I've already made sure that the network connection for the Solaris server is 100MB fdx.

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