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13520 discussions

Backup Technology
by Derek Kelly 21 Jun '00

21 Jun '00

Has anyone on the list had experience (good or bad) using Overland Data SANPiper (a SCSI-to-Fibre Channel bridge technology) or Vixel switches in thier backup strategy? If so, please let me know. We are looking at implementing one of these solutions and are interested in any opinions or possible caveats we might hit. Thanks, Derek Kelly Genomecorp [dkelly(a)genomecorp.com - CSSG] If you can't beat your computer at chess, try kickboxing.

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Re: Filer (F740) with CIFS and NT Terminal Server Edition (Metaframe)
by bhaskar.g＠philips.com 21 Jun '00

21 Jun '00

Hi, We are using such a setup from long time. You create a qtree or directory /vol/volname/home where all the home directories resides. Then you access the home directories throught the automounter maps as userid filer:/vol/volname/home/& Then set an option on the filer cifs.home_dir /vol/volname/home/ This works fine if the userid of the unix and NT matches or else you may have to edit the /etc/usermap.cfg. 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 David.Lockwood@benettonformula.com@SMTP@mathworks.com on 06/21/2000 04:45:27 PM Sent by: owner-toasters(a)mathworks.com To: toasters@mathworks.com@SMTP cc: Subject: Filer (F740) with CIFS and NT Terminal Server Edition (Metaframe) Classification: Restricted Has anybody had any experience using a filer with NT Terminal Server Edition and Metaframe. I want to be able to have users UNIX (HP-UX 10.20) home directories on the filer and for the user to also be able to access that data from their Terminal Server (Metaframe 1.8) session. ---------------------------------------------------------------------- For further information on Benetton Formula 1 visit our web site at www.benettonf1.com. This email and any files transmitted with it are confidential and intended solely for the use of the individual or entity to whom they are addressed. If you have received this email in error please destroy and notify Benetton Formula on +44 1608678000. ----------------------------------------------------------------------

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Re: Filer (F740) with CIFS and NT Terminal Server Edition (Metaframe)
by Rune Bakken 21 Jun '00

21 Jun '00

"David Lockwood" <David.Lockwood(a)benettonformula.com> writes: > Has anybody had any experience using a filer with NT Terminal Server > Edition and Metaframe. I want to be able to have users UNIX (HP-UX > 10.20) home directories on the filer and for the user to also be > able to access that data from their Terminal Server (Metaframe 1.8) > session. There is two ways (at least) to do this: 1* Map "local" drives in the ICA Client, that enables the ICA Client to read files on the mounted filesystem on the HP-UX boxen 2* Use CIFS on the filer, and make shares for each user that are accessed by the Terminal Server >>>>>>>>>>>>.rune PS! is 12000 NFS ops on an F740 a lot? -- Rune Bakken System Administrator Nextra, a Telenor Company

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Filer (F740) with CIFS and NT Terminal Server Edition (Metaframe)
by David Lockwood 21 Jun '00

21 Jun '00

Has anybody had any experience using a filer with NT Terminal Server Edition and Metaframe. I want to be able to have users UNIX (HP-UX 10.20) home directories on the filer and for the user to also be able to access that data from their Terminal Server (Metaframe 1.8) session. ---------------------------------------------------------------------- For further information on Benetton Formula 1 visit our web site at www.benettonf1.com. This email and any files transmitted with it are confidential and intended solely for the use of the individual or entity to whom they are addressed. If you have received this email in error please destroy and notify Benetton Formula on +44 1608678000. ----------------------------------------------------------------------

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Tape libraries
by Gordon Keegan 21 Jun '00

21 Jun '00

The only supported tape drive, stacker and library chart that I can find on NOW is dated 11/98 and doesn't seem to list much beyond DLT4000, DLT4700, and DLT7000. Is there a newer list of supported tape equipment somewhere? Thanks! -- Gordon Keegan, M10-10 Phone: (508) 261-4696 Motorola ING Fax: (508) 261-5757 20 Cabot Boulevard Mansfield, MA 02048 email: lgk011(a)dma.isg.mot.com

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RE: CIFS file locking problem
by mark.muhlestein＠netapp.com 21 Jun '00

21 Jun '00

The underlying problem may be due to a timing bug in the Microsoft client (MS has acknowledged the bug; their answer is "upgrade to Windows 2000") This is seen more on filers than NT server because we are so much faster doing opens. We have a workaround, which is to enforce a small delay before breaking the oplock on oplocked files that are re-opened. This is controlled by an option, "cifs.oplocks.opendelta". It defaults to 8 ms which works well for most clients, but it sounds like you might want to try increasing it. The "cifs stat" console command has a value "OpLkBkNoBreakAck" which gets incremented if this problem is seen. If you have non-zero values for this, try increasing the opendelta to 16 and see if things get better. As to the protocol issues, as Bruce said, we're more or less stuck with them because of Microsoft compatibility. If a session goes away when there is no request pending (i.e. we don't owe the client a response), the filer delays 10 minutes before terminating the session. This is to keep the session alive in the face of temporary network partitions, which we can't distinguish from just losing a client. Currently that 10 minute interval is not configurable on the filer, but it sounds like we might want to make it so. Mark Muhlestein -- mmm(a)netapp.com > -----Original Message----- > From: Dave Atkin [mailto:dla1@york.ac.uk] > Sent: Friday, June 16, 2000 3:39 AM > To: toasters(a)mathworks.com > Cc: AB Smith > Subject: CIFS file locking problem > > > We have a problem with file locking which occurs every few > months. We have > finally worked out at least part of what is happening. > > We have a Windows 95 system filestore exported as a read-only > CIFS share. > There are 1200 or so PCs which access this. > > Just occasionally when a user launches the Telnet client (Hummingbird) > it complains that it can't access its keyboard mapping file. Once this > starts to happen, it is the same for every PC. A unix user > running as root > can't read or do anything to this file either - it gets "permission > denied". > > Yesterday when this happened we used (rc_toggle_basic) lock_dump -f > to look at the locks, and we found that a PC appeared to have > taken out an > exclusive read lock on the file: > > ========00003a31:0006b48e > \95APPLIB\york.hts > state=GRANTED mode=Excl-denyA host=OFFICE1 > > When we found the PC called "office1", it was turned off. The > user said it > had hung up and she had switched it off. > > We managed to restore normal service by doing a > "cifs terminate -t 0 office1". > > This raises several issues: > > 1) If a CIFS client is switched off, is there any sort of > keepalive timer > on the Filer that closes down open files and locks? > > 2) Should a PC with read-only access to a filestore be allowed to lock > files for exclusive read? Should this perhaps be an option on > a qtree or > share? > > 3) This particular application obviously doesn't expect this > file to be > shared. But could any malicious user take out locks on random > important > files and freeze the whole network? > > Dave Atkin > -- > Dave Atkin, Head of Technical Services > Computing Service, University of York, YORK YO10 5DD > Phone: +44-1904-433804 (ddi) Fax: +44-1904-433740 > Email: D.Atkin(a)york.ac.uk >

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Budtool "Migration"
by Jay Orr 20 Jun '00

20 Jun '00

Humm... Even though PDC has been claiming for the past 14+ months : http://www.pdc.com/BTMigration.html That they'll migrate current customers, I just heard from our rep that they aren't <really> offering a migration. Rather, a tradein to go to Legato Networker. For the record, the price of Legato minus the tradein offered is about the same (slight bit more) as orkstation would charge for a new installation. Haven't compared other backup solutions because when I originally contacted our rep back in February he thought it'd only be a few thousand. Granted, he had no clue either and no one there knew anything since Legato bought PDC, then decided to leave them to deal with budtool. So, for those of you who have to deal with budgets, be aware that you have 18 months before you're stuck with a backup system that no one will answer questions about. They say it's EOL'd Jan 2001, and they'll offer support for 12 months after that (they also said they'd migrate people too). Don't know about any of you, but I'm not happy.... ----------- Jay Orr Systems Administrator Fujitsu Nexion Inc. St. Louis, MO

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Make /etc into a qtree?
by Jeff Krueger 20 Jun '00

20 Jun '00

Has anyone tried making /etc into a qtree? We'd like to do that and give it an infinite quota. That way the sum of our qtree usages will equal our df usage and we can track the size of /etc. I wonder if this could be done on a production filer assuming nobody is accesing /etc: adminhost% sudo rsh filer qtree create etc.new adminhost% sudo tarcp /etc /etc.new adminhost% sudo mv /etc /etc.old adminhost% sudo mv /etc.new /etc Seems like this could hose up syslog and possibly CIFS since it tinkers with its files there. Any ideas? Anyone tried this before? -- Jeff -- ---------------------------------------------------------------------------- Jeff Krueger E-Mail: jeff(a)qualcomm.com NetApp File Server Lead Phone: 858-651-6709 IT Engineering and Support Fax: 858-651-6627 QUALCOMM, Incorporated Web: www.qualcomm.com

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SnapMirror reporting woes
by kevin graham 19 Jun '00

19 Jun '00

Perhaps I missed something, but does anyone know of any useful commands for determining snapmirror performance? I'm currently running 5.3.5R2. toaster1.iad> vol snapmirror status Source Dest Status toaster2.snv.xxxx:vol1 toaster1.iad.xxxx:vol2 Transferring (1% complete) toaster1.snv.xxxx:vol1 toaster1.iad:xxxx:vol1 Transferring (0% complete) This isn't exactly useful data, as they seem to almost always be at 0%, though I rarely ever see 'mirror postponed' messages, which inclines me to think that progress is being made in a timely manner. Updates are every 2 hours, and for two small-delta 60gv volumes, I figure it should be idle a fair deal of the time. I can watch recent snapshots show up on the snapmirror dest, but this is the only indication I have that its working at all. The main point of concern, is that Snapmirror dest filer has about 3300 miles between it and the source -- so we are much more susceptible to quirks in the public network than one would encounter in a lab environment or even corporate WAN. The best data I could find was from the snapmirror ops guide, which suggest looking at the snap list on the source filer -- SnapMirror generated Snapshots should have the name of the destination SnapMirror volume appended with a counter. By coordinating the snapmirror.conf file with the time stamps shown in the snapshot listing, you should be able to determine whether or not SnapMirror is generating Snapshots as scheduled ..this seems pitifully inadequate -- something akin to calculating your nfs ops/s by dividing nfsstat -s by uptime whenever you wanted to know. I've got syslog tweaked up to *.info, which hasn't given me much more than statd reports. Is there something better? Something that atleast shows some simple counters like: toasterN> vol snapmirror status -v Volume Source vol1 toaster1:vol1 Current status: idle Updates since reconfig: 94127 Failed updates: 5 Postponed updates: 17 Last successful update: Jun 16 15:12 (45m ago) 1251k, 15 minutes (1.39 KB/s) Average: 4912k, 22 minutes (3.70 KB/s) This would actually give something that snapmirror.conf's could be tuned with. Informative data to syslog would be good as well, use a local facility for it, and for those of us with >1hr replications could actually check progress via logs. Given the price tag on this option, I made the obviously foolish presumption that there would be sufficient tools to monitor progress and performance, especially in the light of its branding as a 'Disaster Recovery' solution.. Wishing I'd stuck to it and put the database on EMC w/ Oracle replication, ..kg..

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restore problems
by Artur Shnayder 18 Jun '00

18 Jun '00

Hello all, I use dump utility for backup my filer on the tape device, that is attached to the filer. Here is the dump command: rsh netapp dump 0dsbfu 54000 52000 64 nrst0a /vol/vol0/home Now I need to restore single file: /vol/vol0/home/software/user/file. I understood from netapp guy, that it's inpossible. My question is how I can restore at least parent directory for this file /vol/vol0/home/software/user. Is it possible? If I run this command (it's the fifth record): netapp> restore xvfbs rst0a 64 5 /vol/vol0/home/software/user/file it ignores the last argument and tries to restore whole the record /vol/vol0/home. And if I add "D" options, like : netapp> restore xvfbsD rst0a 64 5 rst0a /vol/vol0/home/software/user/file /vol/vol0/home/software/user/tmp I get error message "/vol/vol0/home/software/user/tmp is not on tape". It should be very simple, but netapp support guy said me, that -s 5 and -b 64 options are eligible and advised to use the following format ( I guess it's from now.netapp.com): restore xvfD rst0a /vol/vol0/home/software/user/tmp /vol/vol0/home/software/user/file , that of course didn't work. Any help will be very appreciate. Thanks. ~*-,._.,-*~`^`~*-,._.,-*~`^`~*-,._.,-*~`^`~*-,._.,-*~`^`~*-,._. Artur Shnayder Voice: (609)655-5105 x12 System Manager Fax: (609)655-5114 Email: artur(a)cgen.com Compugen Inc URL: http://www.cgen.com ~*-,._.,-*~`^`~*-,._.,-*~`^`~*-,._.,-*~`^`~*-,._.,-*~`^`~*-,._.

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