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Stale File Handles -Reply
by Timothy Cook 24 May '00

24 May '00

is this perchance a problem with entries in the sm file? >>> Jay Orr <orrjl(a)stl.nexen.com> 05/24/00 12:03pm >>> 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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Time Navigator for NDMP backup
by Jeff Bryer 24 May '00

24 May '00

Does anyone have any experience with Time Navigator for backing up NetApps? I only just heard about the software yesterday, but they appear to support NDMP (clients for Solaris, AIX, Linux and NetApps). The company, Quadratec (www.quadratec-software.com), is only just entering into the North American market but they've been in the European market for awhile now. I will be getting an 30-day eval package to play with over June, but curious to hear from anyone who has already tried the software. -- Jeff Bryer bryer(a)sfu.ca Systems Administrator (604) 291-4935 Academic Computing, Simon Fraser University

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RE: Stale File Handles
by Jenkinson, John P (SAIC) 24 May '00

24 May '00

OnTAP version?? this is what we got from netapp that helped us Take the 4th hex number and convert it to decimal. Then do ls -lid on the all the directories on which directory was mounted from the server in question, looking for one with an imunber equal to the mount point file ID from the file handle. you can of course do a find -inum instead -------------------- John Jenkinson BP Exploration (Alaska) > ---------- > From: Jay Orr[SMTP:orrjl@stl.nexen.com] > Sent: Wednesday, May 24, 2000 8:03 AM > To: toasters(a)mathworks.com > Cc: guy(a)netapp.com > Subject: Stale File Handles > > 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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F720 & AIT-2 tape drive
by Amy B. Caldwell 24 May '00

24 May '00

For all of you who graciously helped me with suggestions, I thought I'd write back with the results of our problem with our new F720 and the AIT-2 (Sony SDX-510C) tape drive so that everyone could benefit from our experience. The final justification from a NetApp engineer for why the AIT-2 drive would not work with our filer was due to insufficient cache on the F720's processor. Although we actually got a few complete backups using that tape drive, subsequent dumps would always fail until we got to the point (months later) that the filer itself would time out while talking to the tape drive at the beginning of a dump. We bought the filer February 2 and we got a DLT7000 tape drive on Monday, May 22, and now our problem is (supposedly) solved. We have had no problems with the DLT7000 so far (although it has less capacity -- and it's only been two days :-) ). We never tried the AIT-2 tape drive with any third party backup software. Thanks for your help! Amy Caldwell Texas A&M Nuclear Engineering

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Re: File-specific NDMP backups?
by Dave Toal 23 May '00

23 May '00

> Bill, Thanks for the assistance. > The netapp returns this: > > smith> dump 0uf rst0a /vol/brs1/argus/brs-data1/prod/alr2 > DUMP: creating "/vol/brs1/../snapshot_for_backup.98" snapshot. > DUMP: Using Partial Volume Dump > DUMP: Date of this level 0 dump: Tue May 23 22:24:22 2000. > DUMP: Date of last level 0 dump: the epoch. > DUMP: Dumping /vol/brs1/argus/brs-data1/prod/alr2 to rst0a > DUMP: mapping (Pass I)[regular files] > DUMP: mapping (Pass II)[directories] > DUMP: estimated 95116 tape blocks. > DUMP: dumping (Pass III) [directories] > DUMP: dumping (Pass IV) [regular files] > DUMP: dumping (Pass V) [ACLs] > DUMP: 97906 tape blocks > DUMP: DUMP IS DONE > DUMP: Deleting "/vol/brs1/../snapshot_for_backup.98" snapshot. > Tue May 23 22:25:04 GMT [smith: ndmp_session_0]: ../common/ndmpd/tape.c:788 ndmpdTapeRead: read error. > smith> > > NetBackup returned "media write error". > > <sigh> I've just discovered that the tape won't unload from the > netapp's DLT: it's rewound but the mechanism (storagetek 9714) is jammed. > Which means I get to drive through Boston to go play with it. > > I don't want to attribute this to the read error. Generally I > don't have problems with this sort of thing, though. Also, the netapp apparently wasn't happy with being poked at: > Subject: > Cluster Alert from smith > Date: > Tue, 23 May 2000 22:44:41 +0000 > From: > unixgroup(a)t-t.com > To: > unixgroup(a)t-t.com > > > > > REBOOT on smith at Tue May 23 22:44:41 GMT 2000 > Most annoying. No downtime, though. Dave > >

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File-specific NDMP backups?
by Dave Toal 23 May '00

23 May '00

Folks, Another clueless-newbie question, as is my wont: I've got NetBackup 3.1.1GA running against a 740 filer with 5.2.1.P2. When I attempt an ndmp backup of a directory a few layers down in a /vol, it fails. Backups of the /vol itself work fine. /vol/brs1/prod/brs-data1/ger1 -- fails /vol/brs1 -- succeeds Is this an inherent limitation of ndmp at this rev level? I'd rather not set up nfs backups of these specific directories, but I'm not sure how else to do it. Dave -- Dave Toal Unix Dude Thomson & Thomson N. Quincy, MA

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NFS problems between Tru64 UNIX and F760's (5.3.5)
by Cliff Nadler 22 May '00

22 May '00

We've been seeing alot of 'NFS3 server servername not responding still trying' followed by 'NFS3 server servername ok' messages. Alot of them. It's relaly only on our DEC hardware running Digital UNIX 4.0d. Has anyone seen this before and found a fix? It's starting to affect our performance, especially trying to put some database files on them. It's happening on multiple DEC boxes, against multiple filers (3 F760). -- -------------------------------------------------------------------------- Cliff Nadler Collective Technologies, Inc. (a Pencom Company) cnadler(a)colltech.com (617)-443-1144 -------------------------------------------------------------------------- To win, you must treat a pressure situation as an opportunity to succeed, not an opportunity to fail Gardner Dickinson

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Interaction of /etc/hosts.equiv and telnet.hosts option
by Chris Thompson 22 May '00

22 May '00

I've just spent some time trying to work out why I couldn't rsh to our F740 from some newly installed machines even though I had added them to /etc/hosts.equiv. It turns out, apparently, that the option telnet.hosts list gets into the act: if the rsh'ing host isn't in the telnet.hosts list, then it gets a prompt rejection, and nothing is logged in /etc/messages; if it gets past that, then /etc/hosts.equiv is checked for host and (possibly implied) userid, and if *this* check fails then a "[rshd_0]: Permission denied to rsh request from ... at ..." is logged to /etc/messages. This is with 5.3.5. Has it always been like this? I could have sworn not, but the two lists have been in step here for a long time, so I could be wrong. There's nothing in the hosts.equiv(5), rshd(8), or options(1) man pages to suggest that telnet.hosts affects anything except telnet, or that rsh'ing is affected by anything except /etc/hosts.equiv. It also seems to me very counter-intuitive, and quite inconvenient because the telnet.hosts list is restricted to so few elements. Chris Thompson University of Cambridge Computing Service, Email: cet1(a)ucs.cam.ac.uk New Museums Site, Cambridge CB2 3QG, Phone: +44 1223 334715 United Kingdom.

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Re: Omniback -Reply
by Timothy Cook 22 May '00

22 May '00

We also use OmniBack II to back up our F630 and F760, and I agree that it is inefficient across NFS and does not preserve ACL's. Netapp discusses several alternatives that use NDMP (Workstation Solutions "Quick Restore", Veritas and Legato). Though just as inefficient, an NT backup software would preserve the ACL's, though I don't know whether the restored data would have any unix permissions from a mixed qtree or not. ADSM has also been mentioned by some on this board. We are currently investigating alternative backup software, any recommendations or advice? >>> Philip Thomas <thomas(a)act.sps.mot.com> 05/22/00 11:30am >>> Yes, we use Omniback to backup our 540's & 330's across NFS for the last 5+ years. Of course, it's inefficient across NFS compared to having a "client" on filer like that for Legato and one would loose CIFS acls. -- Begin original message -- > From: "Uros Lampret" <uros.lampret(a)ourspace.si> > Date: Mon, 22 May 2000 09:03:22 +0200 > Subject: Omniback > To: <toasters(a)mathworks.com> > -- End original message -- ---philip thomas

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RE: Interaction of /etc/hosts.equiv and telnet.hosts option
by tim.thompson＠netapp.com 22 May '00

22 May '00

> There's nothing in the hosts.equiv(5), rshd(8), or options(1) man pages to > suggest that telnet.hosts affects anything except telnet, or that rsh'ing If you search for "telnet.hosts" on the NOW site, you'll find several online bugs related to this change in behaviour. The documentation can be found likewise, in an online "Changes to the System Administrator's Guide" for things that didn't make it into the Systems Administrator's Guide. The justification for the change was to provide more consistent access control (and "trusted.hosts" is an alias for "telnet.hosts", to help transition to the new meaning of the option). As Bruce points out, per-protocol access control is desired, and we have someone actively working on that. ...Tim Thompson...Network Appliance, Inc...

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