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13520 discussions

FC/AL connection to tape library.
by Bruce Arden 01 Jul '02

01 Jul '02

Is anyone using FC/AL to connect filers to tape libraries? I am using Fibre Channel Arbitrated Loop (ie no switch) to connect my filer running 6.2R2 to an ATL P3000 tape library. When I first did this the filer could not see the tape drives until it was rebooted (although it could see the FC bridge in the library a soon as it was plugged in). I just had to power cycle the library. Now the filer can't see the tape drives ("sysconfig -t" or "storage show tape" say "No tapes found.") but it can see the FC bridge. Is anyone else seeing this? Is there any workaround, apart from buying a switch or rebooting the filer every time the library is power cycled? - Bruce -- Bruce Arden arden(a)nortelnetworks.com barden2(a)csc.com CSC, Nortel, London Rd, Harlow, England +44 1279 40 2877

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Re: FC/AL connection to tape library.
by Bruce Arden 01 Jul '02

01 Jul '02

Thanks Pramod, The online/offline worked fine. I hadn't tried this before because it didn't appear to work when I first installed the library. - Bruce -- Bruce Arden arden(a)nortelnetworks.com barden2(a)csc.com CSC, Nortel, London Rd, Harlow, England +44 1279 40 2877 Pramod wrote: > Hi, > Have you tried offline and online if the Tape HBA. > > go the advanced mode - priv set advanced > > *> fcadmin offline <Tape adapter> ex: fcadmin offline 1a > *> fcadmin online <Tape Adapter> > > Do this everytime you restart your library or ur bridge. This should work. > > Thanks > Pramod > > ----- Original Message ----- > From: "Bruce Arden" <arden(a)nortelnetworks.com> > To: "toasters" <toasters(a)mathworks.com> > Sent: Monday, July 01, 2002 3:48 PM > Subject: FC/AL connection to tape library. > > > Is anyone using FC/AL to connect filers to tape libraries? > > > > I am using Fibre Channel Arbitrated Loop (ie no switch) to connect my > > filer running 6.2R2 to an ATL P3000 tape library. > > > > When I first did this the filer could not see the tape drives until it > > was rebooted (although it could see the FC bridge in the library a soon > > as it was plugged in). > > > > I just had to power cycle the library. Now the filer can't see the tape > > drives ("sysconfig -t" or "storage show tape" say "No tapes found.") but > > it can see the FC bridge. > > > > Is anyone else seeing this? Is there any workaround, apart from buying > > a switch or rebooting the filer every time the library is power cycled? > > > > - Bruce > > > > -- > > Bruce Arden arden(a)nortelnetworks.com barden2(a)csc.com > > CSC, Nortel, London Rd, Harlow, England +44 1279 40 2877 > > > > > >

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Put filer's nic in promisc mode?
by Matt Miller 27 Jun '02

27 Jun '02

Does anyone know if you can put an F720 (Data ONTAP 6.2) filer's nic in promiscuous mode? matt -- Matt Miller IT Infrastructure Team Duke University - Fuqua School of Business

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Replaced Drive still shows red LED
by Jordan Share 26 Jun '02

26 Jun '02

I replaced a failed drive yesterday. However, the drive light still shows red, even though the filer thinks that the disk is there and is a spare. Is this a common problem? I am running OS 6.1R1, and the LCD is displaying the ops/sec as usual. Jordan

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budtool tape recovery without budtool
by Jeff Kennedy 26 Jun '02

26 Jun '02

I have an old design tape that was made with Budtool's ndmp option that I need to recover. We no longer have budtool but one of the selling points of BT was that you could recover your data without it. The tape was made by an ndmp dump direct to tape. Anyone know how to recover? I have attempted the following: mt -f rst0a rewind mt -f nrst0a fsf 1 mt -f nrst0a fsr 2 recover TfD nrst0a /vol/recovery Doing the above gets me a block issue: "block size should be 60 not 63". So I tried this (after positioning...): recover TfDb nrst0a /vol/recovery 60 It vascillates between returning "Bad Header" and something about a 4k block. I could really use some help on this one.....no BT manuals anymore either. Thanks. -- ===================== Jeff Kennedy Unix Administrator AMCC jlkennedy(a)amcc.com

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RE: cifs access on Windows GROUPS
by Ulrich Neumann 26 Jun '02

26 Jun '02

we use the "normal" w2k progs and never use the filerview to administer filers. then you can use local groups and gibe shares the permissions on groups ... we also give no special permissions on the shares administrators full, users change and setting the permissions on the filesystem ... also hyena ist able to deal with the filers in a w2k-domain ... Best Regards Ulrich Neumann -----Original Message----- From: stephane.bentebba(a)fps.fr [mailto:stephane.bentebba@fps.fr] Sent: Monday, June 24, 2002 16:47 To: toasters(a)mathworks.com Subject: cifs access on Windows GROUPS Hi all, in the Ontapp Doc and in the Filerview Doc, I can read that Windows Group are not supported in cifs access command. I.e. You can't restrict or grant access right for Group SID but only to User SID : cifs access <share> [-g] <user|group> <rights> cifs access MYSHARE MYDOM\MYGROUP "Full control" should be impossible if the MYDOM\MYGROUP is a Windows Group. Althought of all I read and was said, an Administer of mine was able to add ACL for Winbdows Groups with Filerview on several shares. He was able to verify that the restrictions were working fine (i.e.: anyone in this group is able to access files in this shares, anyonewhic his not part of this group have no access to those files). He was able to do so with Global Groups. So first question : is it normal ? Did Netapp forget to advertise about this new functionality ? Does Netapp support this function ? Is there a trick the costumer find without knowing it ? He was able to do so for global groups but not for local groups. In order to be able to deal with local groups, I advise him to use the "useradmin" command. Also to check the lclgroups.cfg file which is responsible for local groups (he would know where local groups can be recorded in order to save this SAM-like file). But : - useradmin can add users but not groups, can't it ? - normally User manager Windows tool should permit to create local users and groups but where the resultant file is located ? (in order to save it in case of disaster and not redo all the config) ? The Filer is in 6.1.2R1 in a WinNT/2K domain. Here is all, thank you much in advance.

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Question on CIFS and disk scrubbing?
by Art Hebert 25 Jun '02

25 Jun '02

Having never been able to to attend Netapp classes, bear with me if these are fairly simple. 1) CIFS was purchased but never actually used. It currently shows up when you type license. Will this in anyway affect the Netapp nfs performance? 2) Does disk scrubbing run automatically daily and if so is this changeable, by day, by time? 3) Can somebody give me the rundown on running wack? This is what I have off the net (somehow the this is how you do it part never got published). When to use WACK on a NetApp Filer From an email by Dave Hitz (12/1999) on the Toasters mailing list. The main difference between "wack" and fsck or scandisk is that you shouldn't need to run wack during normal operation. In particular, unlike UNIX and NT, you don't need to run "wack" after a system panic, or when you pull the plug without shutting the system down, or after a power failure. The WAFL filesystem uses a database technique called "shadow paging with NV-RAM log replay" to maintain a fully consistent state on disk even in the face of unexpected shutdowns. So when do you need to run wack? Suppose that you have a disk fail in RAID, and then when you try to reconstruct the data from the lost disk you discover that there is a bad sector on one of the other drives. Most of your file system data is just fine, but you've got a couple of blocks that can't be recovered. The RAID subsystem zeros both blocks, since that's the best that you can do, but now you need to run wack in order to fix things up, in case the zeroed blocks contained file system data like inodes, indirect blocks, or the free block map. And yes, I must confess that like any computer, NetApp systems do contain the occasional bug, so WAFL has a number of checks to make sure that the on-disk data looks reasonable, and if it finds a problem it will ask you to perform a wack. Our goal is for customers never to need to run wack, but the reality is that people sometimes do need to use it. this is how you do it. Thanks art hebert

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cifs access on Windows GROUPS
by stephane.bentebba＠fps.fr 24 Jun '02

24 Jun '02

Hi all, in the Ontapp Doc and in the Filerview Doc, I can read that Windows Group are not supported in cifs access command. I.e. You can't restrict or grant access right for Group SID but only to User SID : cifs access <share> [-g] <user|group> <rights> cifs access MYSHARE MYDOM\MYGROUP "Full control" should be impossible if the MYDOM\MYGROUP is a Windows Group. Althought of all I read and was said, an Administer of mine was able to add ACL for Winbdows Groups with Filerview on several shares. He was able to verify that the restrictions were working fine (i.e.: anyone in this group is able to access files in this shares, anyonewhic his not part of this group have no access to those files). He was able to do so with Global Groups. So first question : is it normal ? Did Netapp forget to advertise about this new functionality ? Does Netapp support this function ? Is there a trick the costumer find without knowing it ? He was able to do so for global groups but not for local groups. In order to be able to deal with local groups, I advise him to use the "useradmin" command. Also to check the lclgroups.cfg file which is responsible for local groups (he would know where local groups can be recorded in order to save this SAM-like file). But : - useradmin can add users but not groups, can't it ? - normally User manager Windows tool should permit to create local users and groups but where the resultant file is located ? (in order to save it in case of disaster and not redo all the config) ? The Filer is in 6.1.2R1 in a WinNT/2K domain. Here is all, thank you much in advance.

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RE: quota and running CIFS
by Nail, Larry 21 Jun '02

21 Jun '02

6.2 does have sid caching enabled by default... Settings are: cifs.sidcache.enable on cifs.sidcache.lifetime 1440 -----Original Message----- From: Seth Moskowitz [mailto:sethmoskowitz@hotmail.com] Sent: Friday, June 21, 2002 10:57 AM To: guerilla(a)concentric.net; toasters(a)mathworks.com Subject: Re: quota and running CIFS Scott, You are seeing a performance hit because the Filer needs to do SID lookups to run the quota reports for CIFS. Unfortunately there is no way around this except to not run the quota reports as often (as you discovered) or schedule them to run off hours (if you have any). My understanding is that OnTap 6.2R2 does SID caching so once you get to that version of OnTap (assuming it does the cache the SID) you shouldn't see this as a problem any longer. >From: Scott Mikusko <guerilla(a)concentric.net> >Reply-To: Scott Mikusko <guerilla(a)concentric.net> >To: toasters(a)mathworks.com >Subject: quota and running CIFS >Date: Thu, 20 Jun 2002 19:29:59 -0400 (EDT) > > >Comrades, > >I have a filer running NFS & CIFS with about 200Gb of data. We run >quota reports fairly often (used to be every 15 minutes but now every 4 >hours) to keep track of user account space. We've noticed that when >quota runs, the performance of the box takes a big hit. The CPU gets >pegged at 100% for up to 2 minutes, the NFS performance degrades such >that moving a large file (say 10MB) can take nearly a minute! > >We don't see this sort of thing on straight-NFS filers, only on our >F840 filer (running 6.1.R1) running both protocols. The mode running >is NFS (not mixed). Normally a quota run on an NFS filer with the same >amount of files/users is less than 30 seconds, if that. But this >NFS/CIFS box is taking AGES. > >The hit on the box is so strong that it's really affecting our serving >files to web users that have webpages hosted on the box. It's reached >a point where I think Netapp's CIFS and/or quota implementation is >seriously screwed. I might have to look at BlueArc or some other vendor >for running our CIFS-based apps, as this is just not cutting it. > >Anyone else notice this sort of thing on other boxes, be it F840s or >F760s? > > >-Scott _________________________________________________________________ Chat with friends online, try MSN Messenger: http://messenger.msn.com

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Re: quota and running CIFS
by Seth Moskowitz 21 Jun '02

21 Jun '02

Scott, You are seeing a performance hit because the Filer needs to do SID lookups to run the quota reports for CIFS. Unfortunately there is no way around this except to not run the quota reports as often (as you discovered) or schedule them to run off hours (if you have any). My understanding is that OnTap 6.2R2 does SID caching so once you get to that version of OnTap (assuming it does the cache the SID) you shouldn't see this as a problem any longer. >From: Scott Mikusko <guerilla(a)concentric.net> >Reply-To: Scott Mikusko <guerilla(a)concentric.net> >To: toasters(a)mathworks.com >Subject: quota and running CIFS >Date: Thu, 20 Jun 2002 19:29:59 -0400 (EDT) > > >Comrades, > >I have a filer running NFS & CIFS with about 200Gb of data. We run quota >reports fairly often (used to be every 15 minutes but now every 4 hours) >to keep track of user account space. We've noticed that when quota runs, >the performance of the box takes a big hit. The CPU gets pegged at 100% >for up to 2 minutes, the NFS performance degrades such that moving a large >file (say 10MB) can take nearly a minute! > >We don't see this sort of thing on straight-NFS filers, only on our F840 >filer (running 6.1.R1) running both protocols. The mode running is NFS >(not mixed). Normally a quota run on an NFS filer with the same amount of >files/users is less than 30 seconds, if that. But this NFS/CIFS box is >taking AGES. > >The hit on the box is so strong that it's really affecting our serving >files to web users that have webpages hosted on the box. It's reached a >point where I think Netapp's CIFS and/or quota implementation is >seriously screwed. I might have to look at BlueArc or some other vendor >for running our CIFS-based apps, as this is just not cutting it. > >Anyone else notice this sort of thing on other boxes, be it F840s or >F760s? > > >-Scott _________________________________________________________________ Chat with friends online, try MSN Messenger: http://messenger.msn.com

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