toasters May 2000

toasters@lists.teaparty.net

122 participants
148 discussions

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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toasters May 2000