toasters

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13531 discussions

Re: NIS problem with netgroup file
by Jagan Bearelly 26 May '00

26 May '00

Hi Steve, We also use the similar algorithm. Thanks. Jagan >From scl(a)sasha.acc.virginia.edu Fri May 26 14:10:59 2000 To: Cheryl Cruddace <cruddace(a)feather.llnl.gov> cc: jagan(a)netapp.com, toasters(a)mathworks.com Subject: Re: NIS problem with netgroup file Date: Fri, 26 May 2000 17:10:54 -0400 From: Steve Losen <scl(a)sasha.acc.virginia.edu> The NIS netgroup map can be problematic. From what I have been able to figure out, the NIS server builds a map called netgroup.byhost that is keyed by hostname and lists all the netgroups that that host is a member of. NIS map lookups must match the search key exactly, i.e., are case sensitive. In netgroup.byhost the lookup key is the hostname with ".*" appended to it, eg, "feather.llnl.gov.*". You can test your netgroup map with ypmatch "feather.llnl.gov.*" netgroup.byhost When a mount request comes in, the NFS server does a reverse DNS lookup on the IP address of the NFS client to get the client's hostname. The NFS server does a case sensitive lookup of the client's hostname in the NIS netgroup.byhost map to get a list of all the netgroups that the client belongs to. Then the exports list is consulted to see if the filesystem is exported to any of those netgroups. Because the NIS lookup in the netgroup.byhost map must mach exactly, you have to be very careful that the hostnames in your netgroup file match exactly what DNS returns in response to the reverse lookup of the client's IP address. This usually means that your NIS netgroup file must contain FQDNs. (I suppose it is possible that the NIS Makefile converts partial hostnames to FQDNs when creating the netgroup.byhost map, but I don't think it does.) We ran into some trouble with some SGI NFS servers because the SGIs were changing the result of the DNS lookup to all lower case. Our DNS servers return ".Virginia.EDU" and the SGIs were converting this to ".virginia.edu" for some unknown reason. Our NIS maps use ".Virginia.EDU" because that's what DNS returns, so when the SGIs converted to lower case, the NIS lookup failed and mounts were denied. We fixed the problem by modifying the NIS Makefile for our netgroup map. Our new Makefile creates two entries in netgroup.byhost for each host -- one keyed with the hostname returned by DNS and one keyed with the hostname in all lower case. That solved our SGI mount problems. I don't know if netapp filers use this same algorithm for checking mounts. It doesn't sound like it if there was a bug where FQDNs failed to work. You would think that only FQDNs could possibly work. > Jagan Bearelly wrote: > > >I am assuming you are using DNS. There should be case sensitive > >FQDN entry that matches the "nslookup" output for a given client > >and please see that dns.domainname is set with the same case > >sensitive value because "ypmatch" on NIS server is case sensitive. > > I am using DNS, I am not sure what you mean by case sensitive FQDN > or do you mean case insensitive? All combos of case seem to work > when I do an nslookup, i.e. feather, Feather, FEATHER...and none > of this mattered for the first 1-1/2 years so why now? The dns.domain > is set also. > > >Also, ONTAP version 5.3.4R3 doesn't have a fix for netgroup related > >issue (19922 netgroup lookups can fail with fully qualified domain > >name). This fix is available in 5.3.5, 5.3.5R1 and 5.3.5R2 which are > >the latest releases. > > > Thanks for the info. However, I went to the NOW site and the Data ONTAP > Release Advisor (a really neat tool I just found) said to go to 5.3.5r2. > So, is this not only the latest but also stable since stable is mucho > importante. I am running off to conquer new worlds in another week > and I can't get an unlisted number and hide since I will only be four > trailers away from where I am now. And, I don't want to leave a bunch > of limping filers as my legacy now do I??? > > Cheryl > Steve Losen scl(a)virginia.edu phone: 804-924-0640 University of Virginia ITC Unix Support

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Re: NIS problem with netgroup file
by Cheryl Cruddace 26 May '00

26 May '00

Jagan Bearelly wrote: >I am assuming you are using DNS. There should be case sensitive >FQDN entry that matches the "nslookup" output for a given client >and please see that dns.domainname is set with the same case >sensitive value because "ypmatch" on NIS server is case sensitive. I am using DNS, I am not sure what you mean by case sensitive FQDN or do you mean case insensitive? All combos of case seem to work when I do an nslookup, i.e. feather, Feather, FEATHER...and none of this mattered for the first 1-1/2 years so why now? The dns.domain is set also. >Also, ONTAP version 5.3.4R3 doesn't have a fix for netgroup related >issue (19922 netgroup lookups can fail with fully qualified domain >name). This fix is available in 5.3.5, 5.3.5R1 and 5.3.5R2 which are >the latest releases. Thanks for the info. However, I went to the NOW site and the Data ONTAP Release Advisor (a really neat tool I just found) said to go to 5.3.5r2. So, is this not only the latest but also stable since stable is mucho importante. I am running off to conquer new worlds in another week and I can't get an unlisted number and hide since I will only be four trailers away from where I am now. And, I don't want to leave a bunch of limping filers as my legacy now do I??? Cheryl

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RE: [foo@eek.org: Oracle and NTAP.]
by jeff.browning＠netapp.com 26 May '00

26 May '00

All: Re: "Specifically they mentioned a situation they had experienced while testing a netapp/oracle environment which would cause total corruption and require restoration from backup. The specific situation is a case where the filer loses power but the DB server doesn't. Their claim is that if this occurs there is no method to recover the DB other than from backup." I was responsible for testing Network Appliance filers to obtain certification for our storage products by Oracle corporation, as part of the Oracle Storage Compatibility Program (OSCP). See: http://www.oracle.com/database/storage/vendors.html. A major portion of the OSCP test suite had to do with abruptly powering off the filer while the database server stayed up (as well as powering off the database server while the filer stayed up, etc.). NetApp filers passed all of these tests to the satisfaction of Oracle Corporation. The position of Oracle Corporation today is that NetApp filers are an appropriate storage technology for storing Oracle database files, as evidenced by the URL I show above. If you have any further questions on this issue, please contact me directly. Jeff Browning O.C.P. M.C.S.E. Manager of Database Performance Network Appliance, Inc. ----- Forwarded message from foo <foo(a)eek.org> ----- From: foo <foo(a)eek.org> To: toasters(a)mathworks.com Subject: Oracle and NTAP. Ok, so we've been contemplating using one of our 760's for Oracle storage. Discussions with Netapp people made me feel relatively warm and fuzzy about doing this but discussions with our DBA consultants didn't. Specifically they mentioned a situation they had experienced while testing a netapp/oracle environment which would cause total corruption and require restoration from backup. The specific situation is a case where the filer loses power but the DB server doesn't. Their claim is that if this occurs there is no method to recover the DB other than from backup. Anyone had any experience with Oracle/Netapp or this specific situation? We plan to test this in the next few days, but I wanted to get any insights you all might have. Thanks, -Brian ----- End forwarded message -----

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snap command
by Todd C. Merrill 26 May '00

26 May '00

I have a need to get lists of snapsnots on my filers. However, since the filers are heavily used, the snap command takes minutes to return. I suspect they take that long in order to calculate the usage statistics. Is there another way, a faster way, to just get a list of the snapshot names and timestamps? A listing of the directories under a .snapshot directory give the names, but not accurate timestamps. Until next time... Todd C. Merrill The Mathworks, Inc. 508-647-7000 x7792 3 Apple Hill Drive, Natick, MA 01760-2098 508-647-7001 FAX tmerrill(a)mathworks.com http://www.mathworks.com ---

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RE: snap command
by Graham.Knight＠netapp.com 26 May '00

26 May '00

In the .snapshot directory an "ls -alu" will give you the correct times. Graham -----Original Message----- From: Todd C. Merrill [mailto:tmerrill@mathworks.com] Sent: Friday, May 26, 2000 7:04 AM To: toasters(a)mathworks.com Subject: snap command I have a need to get lists of snapsnots on my filers. However, since the filers are heavily used, the snap command takes minutes to return. I suspect they take that long in order to calculate the usage statistics. Is there another way, a faster way, to just get a list of the snapshot names and timestamps? A listing of the directories under a .snapshot directory give the names, but not accurate timestamps. Until next time... Todd C. Merrill The Mathworks, Inc. 508-647-7000 x7792 3 Apple Hill Drive, Natick, MA 01760-2098 508-647-7001 FAX tmerrill(a)mathworks.com http://www.mathworks.com ---

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RE: Accessing the filer from an Windows NT workstations
by abond＠netapp.com 26 May '00

26 May '00

Please open a call with NetApp support - there are a number of possible explanations for this, all fairly simple to resolve. Regards, Andrew > -----Original Message----- > From: owner-dl-toasters(a)netapp.com > [mailto:owner-dl-toasters@netapp.com]On Behalf Of > bhaskar.g(a)philips.com > Sent: 26 May 2000 08:50 > To: toasters(a)mathworks.com > Subject: Accessing the filer from an Windows NT workstations > > > Hi, > > we are unable to access the filer from the NT workstations > or NT Servers through the > NT Server Manager. We have done the configuration as per the > Sys Admin manual. > Please let us know what could be the problem. It gives the > error permission denied. > > > kind regards > > Bhaskar G > Philips Semiconductors, > #3, Sterling Square,Madras Bank Road, > Off St Mark's Road,BANGALORE-560 001. > Voice : +91 80 222 9200 Ext 5060 > Fax: +91 80 2229700 > >

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Accessing the filer from an Windows NT workstations
by bhaskar.g＠philips.com 26 May '00

26 May '00

Hi, we are unable to access the filer from the NT workstations or NT Servers through the NT Server Manager. We have done the configuration as per the Sys Admin manual. Please let us know what could be the problem. It gives the error permission denied. kind regards Bhaskar G Philips Semiconductors, #3, Sterling Square,Madras Bank Road, Off St Mark's Road,BANGALORE-560 001. Voice : +91 80 222 9200 Ext 5060 Fax: +91 80 2229700

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Re: NIS problem with netgroup file
by Jagan Bearelly 26 May '00

26 May '00

Hi Cheryl, I would also advise to go to 5.3.5R2. If you still have an issue after upgrade, I would like to look at netgroups entry for one of the clients in question along with autosupports, /etc/resolv.conf, /etc/nsswitch.conf, etc. Please email the info directly to me at that point. Thank you. Regards, Jagan > From cruddace(a)feather.llnl.gov Thu May 25 17:32:29 2000 > Date: Thu, 25 May 2000 17:23:02 -0700 (PDT) > From: Cheryl Cruddace <cruddace(a)feather.llnl.gov> > Subject: Re: NIS problem with netgroup file > To: jagan(a)netapp.com > Cc: toasters(a)mathworks.com > MIME-Version: 1.0 > Content-MD5: +YTS6ZN6Oo0B/5xulEuLqA== > > Jagan Bearelly wrote: > > >I am assuming you are using DNS. There should be case sensitive > >FQDN entry that matches the "nslookup" output for a given client > >and please see that dns.domainname is set with the same case > >sensitive value because "ypmatch" on NIS server is case sensitive. > > I am using DNS, I am not sure what you mean by case sensitive FQDN > or do you mean case insensitive? All combos of case seem to work > when I do an nslookup, i.e. feather, Feather, FEATHER...and none > of this mattered for the first 1-1/2 years so why now? The dns.domain > is set also. > > >Also, ONTAP version 5.3.4R3 doesn't have a fix for netgroup related > >issue (19922 netgroup lookups can fail with fully qualified domain > >name). This fix is available in 5.3.5, 5.3.5R1 and 5.3.5R2 which are > >the latest releases. > > > Thanks for the info. However, I went to the NOW site and the Data ONTAP > Release Advisor (a really neat tool I just found) said to go to 5.3.5r2. > So, is this not only the latest but also stable since stable is mucho > importante. I am running off to conquer new worlds in another week > and I can't get an unlisted number and hide since I will only be four > trailers away from where I am now. And, I don't want to leave a bunch > of limping filers as my legacy now do I??? > > Cheryl > >

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RE: Oracle and NTAP.
by Bruce.Clarke＠netapp.com 25 May '00

25 May '00

We have extensively tested many scenarios of filer/server failures in an Oracle environment. It is actually pretty hard to lose any data and we have yet to find a way to corrupt data if the steps outlined in the Technical Whitepapers are followed. In particular, you MUST use hard NFS mounts with Oracle. The situation described below will only be a problem if soft NFS mounts are used. Bruce Clarke Network Appliance, Inc. -----Original Message----- From: Brian Tao [mailto:taob@risc.org] Sent: Wednesday, May 24, 2000 9:43 PM To: foo Cc: toasters(a)mathworks.com Subject: Re: Oracle and NTAP. On Wed, 24 May 2000, foo wrote: > > Specifically they mentioned a situation they had experienced while > testing a netapp/oracle environment which would cause total > corruption and require restoration from backup. The specific > situation is a case where the filer loses power but the DB server > doesn't. Their claim is that if this occurs there is no method to > recover the DB other than from backup. Can they publish the exact steps they used to produce this behaviour? We have various flavours of Oracle 7 and 8 (not 8i) with tables stored over NFS on a clustered pair of F740's. We ran a simple test that repeatedly inserted 100 rows, deleted 99 rows, inserted 100 rows, deleted 99 rows, ad infinitum. In the middle of that, we yanked the power from one of the F740's. This triggered a failover to the other F740. During that time, NFS service is suspended, and you can see transactions from sqlplus hang for about 90 seconds. The NVRAM logs are replayed during the takeover, NFS service is restored, and the test script continues running. All records that we expect to see in the database are accounted for. Granted, this is a very simple test, so I'd like to know how your DBA's were able to produce the behaviour they claimed to have seen. -- Brian Tao (BT300, taob(a)risc.org) "Though this be madness, yet there is method in't"

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RE: Interaction of /etc/hosts.equiv and telnet.hosts option
by tim.thompson＠netapp.com 25 May '00

25 May '00

> We agree that rsh hosts shouldn't need to be in "options telnet.hosts" - > this is ridiculous. NetApp needs to revert this behaviour so that > hosts.equiv is all that is necessary for rsh access. We agree as well. This ill-advised change to the behaviour of rsh will be backed-out at the earliest opportunity, including if possible the maintenance releases of 5.3. This change was made some time ago (introduced in 5.3) before there was a more formal review process. We tried to address the issue with documentation but customers continue to run into problems. We now have (and have had for the past year) an official and active "UI Review" process. Our developers are instructed: "If you're developing a new feature, or modifying or removing an existing feature, and the feature has an interface that's visible to customers, you need to get the change reviewed by the UI Review Team." The UI Review Team includes representatives from each engineering group (including TechPubs) and Customer Satisfaction. UI changes are discussed at length before being approved by this team. Naturally, the goal is to produce better user interfaces and prevent ill-advised changes from affecting our customers. ...Tim Thompson...Network Appliance, Inc...

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RE: vol copy speed?
by jeff.mohler＠netapp.com 25 May '00

25 May '00

You should see a max of about 17.5Mb/sec using vol copy between two Gig interfaces...two 100Bt interfaces..well, then you'll only do 100Mbit. Vol copy is free. Its a block for block copy, so the usual NFS performance numbers do not apply as far as how fast you can move data, the bottleneck will be on the destination end. I will preserve snapshots as well. -----Original Message----- From: Steve Losen [mailto:scl@sasha.acc.virginia.edu] Sent: Thursday, May 25, 2000 8:11 AM To: toasters(a)mathworks.com Subject: vol copy speed? We have two F630s in a CF pair, with a total of 7 shelves of 9G drives. We are upgrading to 5.3.5R2P2 and adding 12 36G drives in 2 shelves. We have enough spare slots and spare disks in our existing 7 shelves to depopulate one shelf and leave us with 42 9G disks in 6 shelves 12 36G disks in 2 shelves We want to do some reshuffling of our shelves between the two filers. We plan to copy the following volume to a new volume consisting of 10 36G disks (leaving 2 hot spares). Filesystem kbytes used avail capacity Mounted on /vol/vol0/ 139160864 115462812 23698052 83% /vol/vol0/ /vol/vol0/.snapshot 34790216 12362380 22427836 36% /vol/vol0/.snapshot We are thinking about using vol copy and we would like to preserve all the snapshots. I think it would be faster to copy locally. However, we have 100Mb ethernet between the two filers, so would it be faster to hook up the shelves on different filers and vol copy across the net? If this copy can be done in under, say, 5 hours, we have the luxury of turning off NFS and CIFS and giving vol copy 100% of the CPU. We have to shut down both filers for OS upgrade, recabling shelves, etc., so downtime is inevitable. But if this copy is going to take over 5 hours, that's probably too long. Is there any information about how fast vol copy runs? Am I correct that vol copy does not require a special license? We figure that we have two options here 1) one lengthy downtime where we use vol copy during the downtime. 2) two shorter downtimes. In the first downtime we upgrade the OS and add the 36G shelves. Then we bring the filers back up and run a relatively slow dump/restore that loses snapshots. In the second downtime we run an incremental dump/restore and move the disk shelves to their final locations. If vol copy is "fast enough," option 1 would be easier and less disruptive than option 2. Steve Losen scl(a)virginia.edu phone: 804-924-0640 University of Virginia ITC Unix Support

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RE: supported Tape Drives
by Grant.Melvin＠netapp.com 25 May '00

25 May '00

Hi Jason, We are working in engineering with other tape technologies and have plans to support some of them later this year, when we do we'll update TIP 99. Until then if you need information on what's coming you should talk to your sales rep. Cheers, Grant -----Original Message----- From: jmiddlebrooks(a)datalink.com [mailto:jmiddlebrooks@datalink.com] Sent: Thursday, May 25, 2000 12:32 PM To: Melvin, Grant Cc: toasters(a)mathworks.com Subject: RE: supported Tape Drives The date on TIP_99 is November 23, 1998. You mean that Netapp has not qualified any more tape drives since then? Tape Technology has changed quite a bit since then..... Jason Middlebrooks Systems Engineer Datalink Corp. 888-933-9327 x2970

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RE: Migrating from NetApp to new NetApp
by Francett, Robert D (SAIC) 25 May '00

25 May '00

Definately check out ndmpcopy. We've had very good luck with it. 0-9 dump levels supported so bulk of transfers can happen without affecting production, then downtime/no access time for final level dump of data thus keeping downtime to a minumum. Also supports additional comms card (real handy if both filers have Gig enet). Example: ndmpcopy oldfiler:/vol/datapath newfiler:/vol/datapath -sa root:password -da root:password -dhost gige_address -level 4 Administered from the adminhost; only real shortcoming is that password is advertised, so take precautions there. (If your password has special characters in it they'll have to be preceded with "\" in command line.) Bob Francett BP Exploration (Alaska) > ---------- > From: Kelsey Cummings[SMTP:kgc@sonic.net] > Reply To: kgc(a)sonic.net > Sent: Wednesday, May 24, 2000 1:50 PM > To: toasters(a)mathworks.com > Subject: Migrating from NetApp to new NetApp > > I've got a f230 with 4 shelves of 4GB disks and its replacement, an > f740. I talked to netapp support and they recommended that the best > method to move the data from the f230 to the f740 would be to tapes with > dump and restore. I can't believe that there isn't a more efficient way > to do this. We are an ISP and all mail/ftp/http is served off of the > netapp, any downtime will be painfull so we'd like to minimize it as > best we can. > > What choices to migrate the data do we have? We've considered tar/cpio > over nfs but that's going to take some time even if we migrate one > service at a time. dump/restore seems clumsy. and plain ole 'cp' would > take forever. Apparently there are issues with volcopy going from SCSI > to FCAL, is that true? > > -- > Kelsey Cummings - kgc(a)sonic.net sonic.net > System Administrator 300 B Street, Ste 101 > 707.522.1000 (Voice) Santa Rosa, CA 95404 > 707.547.2199 (Fax) http://www.sonic.net/ > Fingerprint = 7F 59 43 1B 44 8A 0D 57 91 08 73 73 7A 48 90 C5 >

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RE: supported Tape Drives
by jmiddlebrooks＠datalink.com 25 May '00

25 May '00

The date on TIP_99 is November 23, 1998. You mean that Netapp has not qualified any more tape drives since then? Tape Technology has changed quite a bit since then..... Jason Middlebrooks Systems Engineer Datalink Corp. 888-933-9327 x2970

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RE: supported Tape Drives
by Grant.Melvin＠netapp.com 25 May '00

25 May '00

Hi Jason, TIP 99 at: http://now.netapp.com/NOW/knowledge/contents/TIP/TIP_99.shtml Cheers, Grant -----Original Message----- From: jmiddlebrooks(a)datalink.com [mailto:jmiddlebrooks@datalink.com] Sent: Thursday, May 25, 2000 9:19 AM To: toasters(a)mathworks.com Subject: supported Tape Drives Where could I find a list of qualified tape drives that can be attached to the F700 series filer? Thanks in Advance Jason Middlebrooks Systems Engineer Datalink Corp. 888-933-9327 x2970

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RE: Migrating from NetApp to new NetApp
by jeff.mohler＠netapp.com 25 May '00

25 May '00

Or even 'vol vopy' as well..its free, and will work at max possible performance between your two. Mind you..that any changes in the data as you copy..may not migrate across as well unless you do schedule a downtime. If you were my customer and I had to do this..I would use vol copy. -----Original Message----- From: Harechmak, John Sent: Wednesday, May 24, 2000 3:31 PM To: kgc(a)sonic.net; toasters(a)mathworks.com Subject: RE: Migrating from NetApp to new NetApp Hi, There is a whitepaper that might be interest on the netapp website: "Migrating Data Between NetApp Filers" http://www.netapp.com/tech_library/3018.html. Have you considered NDMPcopy? -- johnrh -----Original Message----- From: Kelsey Cummings [mailto:kgc@sonic.net] Sent: Wednesday, May 24, 2000 2:50 PM To: toasters(a)mathworks.com Subject: Migrating from NetApp to new NetApp I've got a f230 with 4 shelves of 4GB disks and its replacement, an f740. I talked to netapp support and they recommended that the best method to move the data from the f230 to the f740 would be to tapes with dump and restore. I can't believe that there isn't a more efficient way to do this. We are an ISP and all mail/ftp/http is served off of the netapp, any downtime will be painfull so we'd like to minimize it as best we can. What choices to migrate the data do we have? We've considered tar/cpio over nfs but that's going to take some time even if we migrate one service at a time. dump/restore seems clumsy. and plain ole 'cp' would take forever. Apparently there are issues with volcopy going from SCSI to FCAL, is that true? -- Kelsey Cummings - kgc(a)sonic.net sonic.net System Administrator 300 B Street, Ste 101 707.522.1000 (Voice) Santa Rosa, CA 95404 707.547.2199 (Fax) http://www.sonic.net/ Fingerprint = 7F 59 43 1B 44 8A 0D 57 91 08 73 73 7A 48 90 C5

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Migrating from NetApp to new NetApp
by Kelsey Cummings 25 May '00

25 May '00

I've got a f230 with 4 shelves of 4GB disks and its replacement, an f740. I talked to netapp support and they recommended that the best method to move the data from the f230 to the f740 would be to tapes with dump and restore. I can't believe that there isn't a more efficient way to do this. We are an ISP and all mail/ftp/http is served off of the netapp, any downtime will be painfull so we'd like to minimize it as best we can. What choices to migrate the data do we have? We've considered tar/cpio over nfs but that's going to take some time even if we migrate one service at a time. dump/restore seems clumsy. and plain ole 'cp' would take forever. Apparently there are issues with volcopy going from SCSI to FCAL, is that true? -- Kelsey Cummings - kgc(a)sonic.net sonic.net System Administrator 300 B Street, Ste 101 707.522.1000 (Voice) Santa Rosa, CA 95404 707.547.2199 (Fax) http://www.sonic.net/ Fingerprint = 7F 59 43 1B 44 8A 0D 57 91 08 73 73 7A 48 90 C5

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Re: NIS problem with netgroup file
by Jagan Bearelly 25 May '00

25 May '00

Hi Cheryl, I am assuming you are using DNS. There should be case sensitive FQDN entry that matches the "nslookup" output for a given client and please see that dns.domainname is set with the same case sensitive value because "ypmatch" on NIS server is case sensitive. Also, ONTAP version 5.3.4R3 doesn't have a fix for netgroup related issue (19922 netgroup lookups can fail with fully qualified domain name). This fix is available in 5.3.5, 5.3.5R1 and 5.3.5R2 which are the latest releases. I hope that helps. Thank you. Regards, Jagan Bearelly http://now.netapp.com Escalations Engineer >From cruddace(a)feather.llnl.gov Thu May 25 09:40:29 2000 Date: Thu, 25 May 2000 09:25:26 -0700 (PDT) From: Cheryl Cruddace <cruddace(a)feather.llnl.gov> Subject: NIS problem with netgroup file To: toasters(a)mathworks.com MIME-Version: 1.0 Content-MD5: 9hsyoedGCI60E8f24Pk+rw== I have developed a problem using the netgroup map on our NIS server that resulted in having to copy the netgroup file to the filer and changing the nsswitch.conf file to point to the local file. This first occurred our F740 running OnTap 5.2.3 and continued after I upgraded to 5.3.4R3. The netgroup file used to have a mixture of systems with and without FQDN. Right before this occurred all were set to FQDN. I know there was a bug with using fully qualified names but that was supposedly fixed in later OnTap OS's. Example: Netgroup with FQDN feather.llnl.gov Without FQDN feather The interesting thing is that I can use a file with FQDN on the filer but not on the NIS server. As an experiment, I modified the netgroup file on the NIS server and took out FQDN, pushed out the maps, set the filer to use the maps and I could again mount the home directories on clients. If I changed back to FQDN, it will not let me mount from clients unless I use the netgroup file local to the filer. Any ideas? P.S. I want my mail to go to my alias instead of to a specific machine. How do I change that, unsubscribe and subscribe won't work, will it? Need to be cruddace1(a)llnl.gov instead of cruddace(a)feather.llnl.gov.

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NIS problem with netgroup file
by Cheryl Cruddace 25 May '00

25 May '00

I have developed a problem using the netgroup map on our NIS server that resulted in having to copy the netgroup file to the filer and changing the nsswitch.conf file to point to the local file. This first occurred our F740 running OnTap 5.2.3 and continued after I upgraded to 5.3.4R3. The netgroup file used to have a mixture of systems with and without FQDN. Right before this occurred all were set to FQDN. I know there was a bug with using fully qualified names but that was supposedly fixed in later OnTap OS's. Example: Netgroup with FQDN feather.llnl.gov Without FQDN feather The interesting thing is that I can use a file with FQDN on the filer but not on the NIS server. As an experiment, I modified the netgroup file on the NIS server and took out FQDN, pushed out the maps, set the filer to use the maps and I could again mount the home directories on clients. If I changed back to FQDN, it will not let me mount from clients unless I use the netgroup file local to the filer. Any ideas? P.S. I want my mail to go to my alias instead of to a specific machine. How do I change that, unsubscribe and subscribe won't work, will it? Need to be cruddace1(a)llnl.gov instead of cruddace(a)feather.llnl.gov.

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supported Tape Drives
by jmiddlebrooks＠datalink.com 25 May '00

25 May '00

Where could I find a list of qualified tape drives that can be attached to the F700 series filer? Thanks in Advance Jason Middlebrooks Systems Engineer Datalink Corp. 888-933-9327 x2970

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Re: Migrating from NetApp to new NetApp
by Jay Sekora 25 May '00

25 May '00

I second other people's recommendations of rsync. rsync is great. There's another possibility, though, that has some of the same advantages. With rsync, you can do a preliminary copy that does everything while the system is live, and then schedule a hopefully short downtime to update just those things that have changed. Dump/restore should be able to do the same thing. While your filer is up and serving, dump/restore everything at level 0. (You can do this by rsh'ing the dump to the old filer and the restore to the new server, of course.) Then, when you have downtime scheduled, dump/restore at level 1 (making sure there were no intervening level 0 dumps). That way, you're only copying the changes, and the dump/restore will be much quicker. (Obviously, because you're going over the net, this is going to be slower than something like "vol copy". However, you can do the level 0 dump without interrupting service, so probably you only care about the time taken by the level 1 dump.) Basically, that amounts to doing by hand what rsync does automatically. Probably a bit more efficient than rsync (because less general). -j. Jay Sekora <jay(a)ccs.neu.edu> Unix Systems Administrator Northeastern University College of Computer Science

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vol copy speed?
by Steve Losen 25 May '00

25 May '00

We have two F630s in a CF pair, with a total of 7 shelves of 9G drives. We are upgrading to 5.3.5R2P2 and adding 12 36G drives in 2 shelves. We have enough spare slots and spare disks in our existing 7 shelves to depopulate one shelf and leave us with 42 9G disks in 6 shelves 12 36G disks in 2 shelves We want to do some reshuffling of our shelves between the two filers. We plan to copy the following volume to a new volume consisting of 10 36G disks (leaving 2 hot spares). Filesystem kbytes used avail capacity Mounted on /vol/vol0/ 139160864 115462812 23698052 83% /vol/vol0/ /vol/vol0/.snapshot 34790216 12362380 22427836 36% /vol/vol0/.snapshot We are thinking about using vol copy and we would like to preserve all the snapshots. I think it would be faster to copy locally. However, we have 100Mb ethernet between the two filers, so would it be faster to hook up the shelves on different filers and vol copy across the net? If this copy can be done in under, say, 5 hours, we have the luxury of turning off NFS and CIFS and giving vol copy 100% of the CPU. We have to shut down both filers for OS upgrade, recabling shelves, etc., so downtime is inevitable. But if this copy is going to take over 5 hours, that's probably too long. Is there any information about how fast vol copy runs? Am I correct that vol copy does not require a special license? We figure that we have two options here 1) one lengthy downtime where we use vol copy during the downtime. 2) two shorter downtimes. In the first downtime we upgrade the OS and add the 36G shelves. Then we bring the filers back up and run a relatively slow dump/restore that loses snapshots. In the second downtime we run an incremental dump/restore and move the disk shelves to their final locations. If vol copy is "fast enough," option 1 would be easier and less disruptive than option 2. Steve Losen scl(a)virginia.edu phone: 804-924-0640 University of Virginia ITC Unix Support

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Fibre Cards?
by jmiddlebrooks＠datalink.com 25 May '00

25 May '00

Do the Netapp F700 series only support Qlogic ISP2100 cards fibre cards? What fibre cards can be used in the Filer? Emulex? JNI? Thanks in Advance Jason Middlebrooks Systems Engineer Datalink Corp. 888-933-9327 x2970

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Re: Migrating from NetApp to new NetApp
by Richard L. Rhodes 25 May '00

25 May '00

I wonder if Netapp would give out a temporary snapmirror license to help migrating data between servers? That's kind of how I migrate data between unix systems via rdist. Rick On 25 May 2000, at 11:15, Cliff Nadler wrote: > > > > Recently i migrated data (over 110GB) from F520 to F760. With a gig > card > > insatlled in both the systems, we acheived 35GB per hour by using vol > copy > > command. I am not sure about F230 taking a gig card. > >

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Stale File Handles
by Jay Orr 25 May '00

25 May '00

AARRRGGHH!!! Ok, so I queried the list about this a year ago (early May '99) but am dealing with it again. Guy Harris was kind enough to help, and if you're out there I could use your help again. We had a power outage a week ago that shut down all our desktop systems - but not our filers and servers. Now, we have at random times during the day a large majority of systems griping : NFS write error on host hardrock: Stale NFS file handle. (file handle: 2ae0500 51356400 20000000 aa5c8 54417810 5c140000 2ae0500 51356400) They all have the same File handle, and the toaster has no error messages in its etc/messages files. I tried rebooting a few systems, but they still generate these error messages. I was trying to figure out what file it is by extracting an INODE number, but what Guy said before doesn't match : >In 5.0, we had to add a file system ID; file handles in 5.0 and later >consist of: > > 32-bit file ID for mount point > 32-bit generation count for mount point > 8-bit snapshot ID in which file resides > 8-bit unused byte > 32-bit file ID for file > 32-bit generation count for file > 32-bit volume ID for file > 32-bit file ID for export point > 32-bit combined snapshot ID and generation number for export > point; > the upper 8 bits of that 32-bit quantity are the snapshot ID > and the lower 24 bits are the generation number. > >The file's file ID (but not the mount point's or export point's file ID) >is *big-endian*; So, any ideas as to how to figure this out? Thanks! ----------- Jay Orr Systems Administrator Fujitsu Nexion Inc. St. Louis, MO

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