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Re: Removing disks from a volume
by mds＠gbnet.net 21 Aug '00

21 Aug '00

You can do it with a combination of VxVM and VxFS - and it's relatively simple too. The day the WAFL gets that feature, well, the VRTS solution won't look so simple anymore, of that I'm confident. (IF WAFL gets it, of course..) -- -Mark ... an Englishman in London ...

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Removing disks from a volume
by Aaron Sherman 21 Aug '00

21 Aug '00

We've accidentally added our spare disk to a volume. Our OEM says that this is irrevokable, and that we'll have to copy the volume to another disk tray, rebuild the volume and copy back in order to fix this. Is that true? Is there no way to shrink a filesystem and remove a disk once it's been added? It seem contrary to the ultra-flexible spirit of the Filers.... -- Aaron Sherman Systems Architect HighWired.com -- The global high school community http://www.highwired.com 300 North Beacon Street Watertown, MA 02472 (617) 926-1850 x238 (617) 926-1861 fax asherman(a)highwired-inc.com / ICQ#43677395 / Y!ajstrader "We had some good machines, but they don't work no more." -"Faded Flowers" / Shriekback

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RE: RCS issues with ONTAP 5.4.3R2
by Clawson, Simon 21 Aug '00

21 Aug '00

In answer to Todd's question: We use RCS as a backend to Sniff, on both UNIX & PC. The issue was correctl spotted by Mark. We have found that the bug mentioned did in fact cause our problems (prehaps Mark implemented the fix?) So if you are using source control, watch out! Cheers Mark et al for your advice and help with tis, it was kind of a major problem for us. Simon -----Original Message----- From: Todd C. Merrill [mailto:tmerrill@mathworks.com] Sent: 18 August 2000 21:50 To: Clawson, Simon Cc: toasters(a)mathworks.com Subject: RE: RCS issues with ONTAP 5.4.3R2 On Thu, 17 Aug 2000, Clawson, Simon wrote: > We went up from 5.2.3 to 5.3.4R2. The user working on UNIX boxes are able to > be checkout file with RCS exclusive locks. Users on PC's get "permission > denied" What RCS package are you using on the pc's? To what security mode is the filer set? > from RCS access. User can open and lock files on UNIX boxes OK. However on > PC, users cannot open and lock files that have been created by another user. Though a long-shot, does the output of `cifs sessions *` show any locks on files? Until next time... 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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Removal from mailing list
by Jouni Pohjola 21 Aug '00

21 Aug '00

Please remove me from the list. I am getting too much mails, I rather read these through Internet. Jouni Pohjola ProAct Datasystem Oy Sinimäentie 14 (Po.Box 45) 02630 Espoo Finland jouni.pohjola(a)proact.fi GSM +358-40-5641122

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Re: NDMP Backups and restore with NetBackup
by Oye Akintan 19 Aug '00

19 Aug '00

Does Veritas offer a class on Netbackup for NDMP ? if not can you please tell me how to restore an NDMP backup/ browse backup . -Oye Steve Kappel wrote: > >What will be the file path to set in order the backup a filer from / ? I'm > getting a > >manual backup failure error code (99) and I think it's because the file path is > not > >right. I set it to be vol/vol0/*. But I want it to backup the file system > without > >snapshots. How can I set up rules for backup i.e exclude files with .txt > extension > >e.t.c. ? > > NetApp backups never use the .snapshot directories unless you specifically > name them as the backup path. But the act of doing a NDMP backup on > NetApp will ALWAYS generate a new snapshot that is used to do the backup. > > You cannot use wildcards to do NDMP backups. You can use /vol/vol0 or > / which is an alias for /vol/vol0 on NetApp. > > NDMP protocol does not specify any mechanism for doing excludes. NetApp > has a proprietary mechanism by setting the NDMP environment variable > EXCLUDE. See NetApp documentation for exact syntax. I believe the > syntax of your class file list should be something like this: > > SET EXCLUDE=*.txt > /vol/vol0 > > __________________________________________________________________________ > Steve Kappel steve.kappel(a)veritas.com > VERITAS Software steve.kappel(a)iname.com (Personal)

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RE: RCS issues with ONTAP 5.4.3R2
by Clawson, Simon 18 Aug '00

18 Aug '00

Sorry, more clarification suggested.... We have a call open with the support team, who are at a bit of a loss too. I was hoping that there would be a user out there who has seen this too... We went up from 5.2.3 to 5.3.4R2. The user working on UNIX boxes are able to be checkout file with RCS exclusive locks. Users on PC's get "permission denied" The user "eegbuild" owns most of the files in the share where the problem is being experinced , however this has never caused an issue. We have fond that once the users check out files on unix (which changes ownership to them) then they can check out when working on the PC. Likewise, user can check out files owned by users other than eegbuild. The problem appears to be on the CIFS side of things. -----Original Message----- From: Clawson, Simon [mailto:simon_clawson] Sent: 17 August 2000 16:38 To: toasters(a)mathworks.com Subject: RCS issues with ONTAP 5.4.3R2 Hi! We have upgraded (downgraded??) to 5.4.3R2. Everything seems to work apart from RCS access. User can open and lock files on UNIX boxes OK. However on PC, users cannot open and lock files that have been created by another user. This operation work fine up until this upgrade (Previously we were on 5.2.3) ANY ONE? cheers Simon Simon Clawson Renoir Group Systems Administrator Mentor Graphics Uk Rivergate London Road Newbury Berkshire RG14 2QB <<Clawson, Simon.vcf>>

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Re: NDMP Backups and restore with NetBackup
by Eyal Traitel 18 Aug '00

18 Aug '00

If you won't upgrade to 3.4, you can still "trick" NetBackup by entering the IP address for the alternate host in NetBackup machine's /etc/hosts. This is simple, and working too. Eyal. --- Steve Kappel <steve.kappel(a)raistlin.min.ov.com> wrote: > David Lockwood wrote: > >Consider the following scenario: > > > >Data is written to a volume on one NetApp filer, on the hour this > data is > mirrored using snapmirror to a remote filer. NetBackup is used, using > NDMP, to > backup the data from the remote filer (snapmirror copy). Backups work > fine and > are reliable until ..... > > > >.... you want to restore data. The Netbackup restore option for NDMP > types does > not appear to give any option for restoring data to any alternate > location. The > original location is of course an offline volume that is read only. > > > If by 'location' you mean a different NetApp, NetBackup calls this > "alternate client restore". NetBackup NDMP supports this beginning > in version 3.4 which was released recently. > > If you mean a different directory, NetBackup calls this "alternate > path restore" and NetBackup NDMP has supported that at least as far > back as 3.2. > > > If you need help on how to do this, email me privately and I'll > have someone here give you the details (depends on which user > interface you are using). > > > __________________________________________________________________________ > Steve Kappel steve.kappel(a)veritas.com > VERITAS Software steve.kappel(a)iname.com (Personal) > ===== Yours, Eyal Traitel eTraitel(a)yahoo.com, Home: 972-3-5290415 (Tel Aviv) *** eTraitel - it's the new eBuzzword ! *** __________________________________________________ Do You Yahoo!? Send instant messages & get email alerts with Yahoo! Messenger. http://im.yahoo.com/

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Re: NDMP Backups and restore with NetBackup
by Steve Kappel 18 Aug '00

18 Aug '00

Oye Akintan wrote: >Does Veritas offer a class on Netbackup for NDMP ? Not yet. >if not can you please tell me how >to restore an NDMP backup/ browse backup . There is nothing special about NDMP. Standard NetBackup operations are all you need. Don't you have NetBackup manuals? The NetBackup NDMP System Administrator's Guide covers the questions you asked earlier - wildcards and exclude lists. __________________________________________________________________________ Steve Kappel steve.kappel(a)veritas.com VERITAS Software steve.kappel(a)iname.com (Personal)

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Re: restore going nuts!
by Eyal Traitel 18 Aug '00

18 Aug '00

You can try to use "rsync" - basically circumventing the problem. It will also be easier for you to find out on these bad files errors since rsync mentions things like "stat()" errors - easier to diag. Eyal. --- Steve Losen <scl(a)sasha.acc.virginia.edu> wrote: > > Has anyone seen this one? > > I have been having problems copying a volume to another volume > on the same filer. > > I did a level 0 copy with ndmpcopy and that appeared to work OK. > At the end the restore had these errors right before it exited: > > home1.Virginia.EDU: DUMP: HALT: The operation was successful! > Waiting for home1.Virginia.EDU RESTORE to halt too. > home1.Virginia.EDU: LOG: RESTORE: home1.Virginia.EDU: LOG: bad entry: > incomplete operations > home1.Virginia.EDU: LOG: RESTORE: home1.Virginia.EDU: LOG: name: > ./h1/e/en/enh7f/RSTTMP05989666 > home1.Virginia.EDU: LOG: RESTORE: home1.Virginia.EDU: LOG: parent > name ./h1/e/en/enh7f > home1.Virginia.EDU: LOG: RESTORE: home1.Virginia.EDU: LOG: sibling > name: ./h1/e/en/enh7f/Grigory Pechorin as Superflous Psychopath.doc > home1.Virginia.EDU: LOG: RESTORE: home1.Virginia.EDU: LOG: entry > type: LEAF > home1.Virginia.EDU: LOG: RESTORE: home1.Virginia.EDU: LOG: inode > number: 5989666 > home1.Virginia.EDU: LOG: RESTORE: home1.Virginia.EDU: LOG: flags: > TMPNAME > home1.Virginia.EDU: RESTORE: HALT: The operation was successful! > The transfer is complete. > Elapsed time: 12 hours, 13 minutes, 24 seconds. > > I'm not conviced that the restore was indeed 100% successful. > > This filer is production, so I can't do the whole copy during a > downtime. > A few days after the level0 I tried to do a level1 ndmpcopy to pick > up > any changes, and the restore failed with these errors: > > home1.Virginia.EDU: LOG: DUMP: home1.Virginia.EDU: LOG: dumping (Pass > IV) [regular files] > home1.Virginia.EDU: LOG: RESTORE: home1.Virginia.EDU: LOG: Warning: > cannot remove file banner.htm: No such file or directory > home1.Virginia.EDU: LOG: RESTORE: home1.Virginia.EDU: LOG: bad entry: > not marked REMOVED > home1.Virginia.EDU: LOG: RESTORE: home1.Virginia.EDU: LOG: name: > ./lowinum/banner.htm > home1.Virginia.EDU: LOG: RESTORE: home1.Virginia.EDU: LOG: parent > name ./lowinum > home1.Virginia.EDU: LOG: RESTORE: home1.Virginia.EDU: LOG: entry > type: LEAF > home1.Virginia.EDU: LOG: RESTORE: home1.Virginia.EDU: LOG: inode > number: 9024 > home1.Virginia.EDU: LOG: RESTORE: home1.Virginia.EDU: LOG: flags: > REMOVED|KEEP > home1.Virginia.EDU: RESTORE: HALT: The operation was successful! > Waiting for home1.Virginia.EDU DUMP to halt too. > (If it sits here forever, the transfer was successful, > but the source filer has hung. Press ^C.) > home1.Virginia.EDU: LOG: DUMP: home1.Virginia.EDU: LOG: Error writing > to standard output: Broken pipe > home1.Virginia.EDU: LOG: DUMP: home1.Virginia.EDU: LOG: DUMP IS > ABORTED > home1.Virginia.EDU: Connection halted: HALT: Internal error! > Elapsed time: 0 hours, 21 minutes, 14 seconds. > > > Maybe it didn't like the restore_symboltable file or perhaps it > didn't > like the dump. After a few tries, with different snapshots, I gave > up. > So I decided I would have to use rsh dump | rsh restore and use the > "x" > option on restore rather than "r", which ndmpcopy uses. This would > simply > restore the level 1 dump without trying to remove files deleted on > the > live filesystem between the level0 and level1. I didn't trust the > restore_symboltable file, so I moved it aside, even though "x" isn't > supposed to use it. > > Then I ran this command: > > rsh filer -l root -n 'dump 1uf - /vol/vol0/.snapshot/level1' | \ > rsh filer -l root 'restore xfD - /vol/vol1' > > This seemed to be working fine and the dump finished according > to the output from rsh, but the restore is still running > over an hour later and it's gobbling up 100% of the filer > CPU. Furthermore, it seems to be ZEROING OUT ALL THE FILES > THAT IT RESTORED! > > While the dump was running, I checked my own home directory > on the new volume because I had changed some files after the > level0. Sure enough, some of the new files were there and intact, > so restore had restored them. Now that the dump is done, I > check those same files and they are all 0 length! What's > going on? > > This volume, has 120G used, but the level1 dump was only 3480944 K > according to dump (a bit over 3G). The new volume is twice as big > as the old one. > > The "rsh dump" process has exited, but the "rsh restore" > process is still there and the filer CPU is at 100%. > > I just killed the "rsh restore" and got this error: > > RESTORE: Interrupted > > Now the filer CPU is down to 10% or so. > > We are running DOT 5.3.5R2P2. > > > Steve Losen scl(a)virginia.edu phone: 804-924-0640 > > University of Virginia ITC Unix Support > ===== Yours, Eyal Traitel eTraitel(a)yahoo.com, Home: 972-3-5290415 (Tel Aviv) *** eTraitel - it's the new eBuzzword ! *** __________________________________________________ Do You Yahoo!? Send instant messages & get email alerts with Yahoo! Messenger. http://im.yahoo.com/

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Scheduling
by Edward Hibbert 18 Aug '00

18 Aug '00

I have a question on scheduling which you folks might have had some experience of. It's more of an appeal for help, really. We have a distributed POP/IMAP server which stores its data on a central NFS server. The app uses many (upto 100) pthreads, each of which might be issuing a disk op. Typically the pthreads are bound to an OS thread/LWP. We have acquired a non-exclusive file lock on the files to disable client-side caching. Under heavy load, what we see is that some individual write/read calls take an age to complete (upto several minutes). During this time period many other read/write calls are happening happily enough and fast from other threads. When the load lets up, the long ops complete. This behaviour becomes increasingly common as we increase the number of threads in the application - with 1 thread it doesn't happen, with 10 it's quite common, with 50 it's unbearable. We see this behaviour: - With both NetApp and Solaris as the NFS server. It takes more stress to kick in with NetApp, probably because it's faster. - With various OSs as the NFS client (Solaris, HP, Linux). It's almost as though there is last in first out thread scheduling going on somewhere, but although it feels like a client-side issue we can't tie it down to any one OS. We have some evidence that the behaviour may be better with NFS v2 rather than v3. When this is ocurring, it's not that the total throughput in disk read/write ops is poor - it's a little less than the peak we see - but that the scheduling is unfair. This is a problem for us because some of the disk ops are associated with a locked global resource, so if that disk op is delayed a lot, we get heavy contention on the resource, response times to individual user requests suffer, and so on. Have any of you seen anything like this? Edward Hibbert DCL.

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