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13514 discussions

'Loop break detected' followed by failover
by Jay Soffian 10 Nov '99

10 Nov '99

I've opened a case with NOW on this. One of my filers (F740/512MB/28x9GB disks/DOT 5.2.3) tonight just did this: Tue Nov 9 19:00:01 EST [subzero: statd]: 7:00pm up 44 days, 13:45 2570782327 NFS ops, 0 CIFS ops, 0 HTTP ops Tue Nov 9 19:16:46 EST [subzero: isp2100_main]: Loop break detected on ISP2100 in slot 1. Tue Nov 9 19:16:50 EST [subzero: isp2100_timeout]: Resetting ISP2100 in slot 1 Tue Nov 9 19:19:14 EST [subzero/viking: cf_takeover]: relog syslog Tue Nov 9 19:17:15 EST [subzero: isp2100_timeout]: Resetting ISP2100 in slot 1 Tue Nov 9 19:19:14 EST [subzero/viking: cf_takeover]: relog syslog Tue Nov 9 19:17:27 EST [subzero: isp2100_timeout]: Resetting ISP2100 in slot 1 Tue Nov 9 19:19:15 EST [subzero/viking: asup_main]: Cluster Notification mail sent No core dump, I found the filer at an 'ok' prompt. I rebooted the filer, did a cf giveback a few minutes later and all appears fine now. Anything recommended besides checking that all cables are tight and all drives are fully seated? I couldn't find any bugs relating to this on NOW (except a bug in the Diagnostics not resetting the FC-AL loop properly when a loop break occurs). I've heard rumors that some F740's were shipped with bad on-board FC-AL controllers, but this F740 has been in operation for over a year w/o any problems (it's only been clustered since June though). Suggestions? j.

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Failure of rm -rf
by Dave Atkin 09 Nov '99

09 Nov '99

Since we moved to 5.3 (actually 5.3.2R1P1) we see occasional failures in various Unix automated management procedures. I've finally traced this to the "rm -rf" command failing. On Solaris systems it fails with: rm -rf /<filer>/x rm: Unable to remove directory /<filer>/x/y/z: File exists On SGI systems the slightly more meaningful error message is /<filer>/x/y/z: Directory not empty However, just repeating the rm -rf command once more works perfectly and the directory tree has gone. I don't think it's anything to to with CIFS file locking since some of the directories are old and have not been used for a long time. Has anyone else seen this? 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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RE: the latest on NDMP and NetBackup?
by Melvin, Grant 09 Nov '99

09 Nov '99

Hi Tony, We have just updated our external web site with information regarding NetBackup & Data Ontap compatibility at: http://now.netapp.com/knowledge/contents/TIP/TIP_605.shtml Other certification matrices available on NOW are: Legato BudTool: http://now.netapp.com/knowledge/contents/TIP/TIP_601.shtml Workstation Solutions Quick Restore: http://now.netapp.com/knowledge/contents/TIP/TIP_698.shtml Since I think this document will be useful to NetApp users, I hope you don't mind, but this seems like a good opportunity to also introduce our new white paper on "Data Protection Strategies for Network Appliance Filers" at: http://www.netapp.com/tech_library/3066.html Cheers, Grant -----Original Message----- From: Rudie, Tony [mailto:Tony.Rudie@fmr.com] Sent: Tuesday, November 09, 1999 10:28 AM To: 'toasters(a)mathworks.com' Subject: the latest on NDMP and NetBackup? I see postings of some months back in the archives about this, but I wonder what the latest is? We have a cluster of 740s running DOT 5.3D11 Each filer has an Overland Data DLT7000 with 15-tape mini library. Our Solaris 2.6 NetBackup server (running NetBackup 3.12) seems to be directing NDMP backups to the local tape drives without any substantial problems. Have I got a "lucky guess" of an OS rev here? Is anyone doing NetBackup NDMP on any other release level successfully?

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How to subscribe
by Pierre Maubert 09 Nov '99

09 Nov '99

Can somebody remind me how to subscribe to that list. I forgot thge process. thanks -- Regards, Pierre . +------------------------------------------------------+ | Pierre Maubert, Sys_Admin Texas Instruments France | | email:p-maubert@ti.com Tel: +33 49322.2681 | | Fax: +33 49202.4669 Pager: 0606498982 | +------------------------------------------------------+

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the latest on NDMP and NetBackup?
by Rudie, Tony 09 Nov '99

09 Nov '99

I see postings of some months back in the archives about this, but I wonder what the latest is? We have a cluster of 740s running DOT 5.3D11 Each filer has an Overland Data DLT7000 with 15-tape mini library. Our Solaris 2.6 NetBackup server (running NetBackup 3.12) seems to be directing NDMP backups to the local tape drives without any substantial problems. Have I got a "lucky guess" of an OS rev here? Is anyone doing NetBackup NDMP on any other release level successfully?

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RE: Failure of rm -rf
by Gordon Goins 09 Nov '99

09 Nov '99

Remove ggoins(a)adic.com <mailto:ggoins@adic.com> Gordon M. Goins System Engineer ADIC http://www.adic.com -----Original Message----- From: Brian Rice [SMTP:brice@gnac.com] Sent: Monday, November 08, 1999 2:13 PM To: toasters(a)mathworks.com Subject: Re: Failure of rm -rf I've started seeing exactly this sort of failure in rm -rf's as of 5.3.2D3. rm: Unable to remove directory foo/bar/baz/gorp: File exists rm: Unable to remove directory foo/bar/baz: File exists rm: Unable to remove directory foo/bar: File exists rm: Unable to remove directory foo: File exists Someone asserted that these files were probably open. But they're not... or at least they're no more or less likely to be open than any of the other files I have rm -rf'ed with no problem in the past. The problem is non-deterministic. Re-running the rm -rf does help, but of course having to repeatedly re-issue rm commands as root does pose quite a new set of problems. :-\ Brian

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Re: Strange routing problem
by jrg＠acm.org 09 Nov '99

09 Nov '99

On Mon 8 Nov, 1999, Mike Mueller <Mike.Mueller(a)jpl.nasa.gov> wrote: >Cisco 2924 switch that the NetApps and other hosts are connected to also >shows this same behavior. This has led us to suspect a problem with the >Cisco switches or router, but we have pretty much eliminated any hardware I've seen really weird behaviour from some Cisco switches (no real detail, I don't run them) where hosts can't talk to each other but can both reach 'the outside'. Our networks group have mentioned a problem where some 10baseT devices out there attempt to negotiate full-duplex (possible, but not common) and screw up the entire switch - of course, this tends to happen on our office networks and not our production ones - so definitely worth talking with Cisco and looking through subsequent IOS release notes I think. James.

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Re: LISA Conference
by Cheryl Cruddace 08 Nov '99

08 Nov '99

I asked whether anyone was going to LISA a few months ago and a few beer drinkers answered affirmatively. Is anyone still interested in getting together for a bar-hopping-birds-of-a-feather. If so there is usually a bulletin board that we could post to at the conference center. Mind you this is all in the interest of sharing priceless tidbits of technical information so that I can go home and rip open those boxes and build our new F740's with gusto and a lot more knowhow than when I built the F630. (My boss doesn't know that the filers build and run themselves so he thinks I am on a fact finding mission!) Cheryl Cruddace LLNL

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Quad cards on Network Appliance
by Mittal, Ashish 05 Nov '99

05 Nov '99

I have a quad network card on a F720 connected to 2 sun and one hp unix box. every once in a while i loose the connectivity to these boxes and when i try to re-mount i have lots of problems. Bringing the ports up and down using ifconfig does not help. Sometimes one port will come up and the others will not...so it is very intermittent. Has anyone had this problem before...any possible solutions.... Ashish Mittal

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Macs and Filers.
by yann.golanski＠ThePLAnet.net 04 Nov '99

04 Nov '99

Does anyone know if it is possible for a cluster of Macs to see a filer? If that's not possible directly, do you know of any free-ware or not code that would allow it? Anyone here had experience in doing something like that? Cheers. -- Yann Golanski Internet Systems Developer yann.golanski(a)theplanet.net The Planet Online

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