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Re: Wafliron/WAFL_check in read only mode/tell me if something is wrong, but don't fix mode
by Thorsten.Lemke＠computacenter.com 03 Sep '03

03 Sep '03

I fully agree that a 'check but don't fix' feature would be very helpful but we made the experience that wafliron do not touch any productive files. We recently had the problem that snapvault refused to run because of an inconsistent file system. It was a volume of about 270 GB and 10m files. As this volume hosted the internet presence of a big customer, we had little chance to take it offline and were understandably doubtful to use wafliron without knowing what we have to expect. So we made a test run on a less critical volume and it turned out to be a quite useful tool. It runs in the background with low priority but nervertheless I would recommend to run it over night. In our case it took about 4 hours to finish and it moved about 1500 files into the lost+found directory. Obviously all of them were already "invisible" as the internet presence was not affected. Afterwards our problem was solved. Of course I can only speak about our case and can not give you any guarantee... Perhaps you are able to do a volume snapmirror to backup your data before running wafliron (that is what we did), because volume snapmirror is working on block level whereas qtree snapmirror and snapvault are working on file level. Regards Thorsten Lemke "Garrett Burke" <garrett.burke(a)eircom.net>@mathworks.com on 02.09.2003 16:24:40 Please respond to <garrett.burke(a)eircom.net> Sent by: owner-toasters(a)mathworks.com To: "Toasters \(E-mail\)" <toasters(a)mathworks.com> cc: "Philip Boyle \(E-mail\)" <philip.boyle(a)eircom.net>, "Sam McKenna \(E-mail\)" <sam.mckenna(a)eircom.net> Subject: Wafliron/WAFL_check in read only mode/tell me if something is wrong, but don't fix mode -------------------------------------------------------------------------- Hi, Due to a snapmirror failing issue, NetApp support have advised us to run wafliron (online) or WAFL_check (offline) on the source volume. They have advised us that there's no way to check a volume while online for errors - a 'tell me if I need to run WAFL_check in fix mode, but don't do anything now' (I realise that WAFL_check prompts before fixing) The issue is that we do not want to schedule offline maintenance with an unkown end time when we don't know if there's anything wrong with the filesystem. We expect that the check to take several hrs as we have 13.5m files & 340G in the volume. Have other run into this before? I see the lack of 'check while online, but don't fix' as a serious flaw with OnTap. Thanks, GB ---- Garrett Burke, Service Implementation & Support Manager, Eircomnet. http://www.eircom.net COMPUTACENTER (UK) LTD The contents of this e-mail are intended for the named addressee only. It contains information which may be confidential and which may also be privileged. Unless you are the named addressee (or authorised to receive for the addressee) you may not copy or use it, or disclose it to anyone else. If you received it in error please notify us immediately and then destroy it. Computacenter information is available from http://www.computacenter.com This footnote also confirms that this email message has been swept for the presence of computer viruses. ***************************************************************************************************************************

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RE: Veritas Netbackup Question
by Kumar, Rahul 03 Sep '03

03 Sep '03

Veritas 4.5 supports remote NDMP I think it requires a dedicated drive. Rahul -----Original Message----- From: Ziller, Frank [mailto:FZiller@IKON.com] Sent: Wednesday, September 03, 2003 9:06 AM To: 'Barry Lustig'; toasters(a)mathworks.com Subject: RE: Veritas Netbackup Question There is a way to use NDMP over ethernet versus the SCSI\FCAL with Veritas NBU. Not sure if it requires a dedicated drive however. Possibly worth a look. I think it is called Remote NDMP. -----Original Message----- From: Barry Lustig [mailto:barry-keyword-toasters.2c06cb@lustig.com] Sent: Tuesday, September 02, 2003 7:46 PM To: toasters(a)mathworks.com Subject: Re: Veritas Netbackup Question As a number of people have pointed out, one option is to mount the filer onto the veritas media/master server via NFS or CIFS and then backup the volume. I figured on this as a fall-back option. I was hoping to find another mechanism, via NDMP on the server, to get past this. barry

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RE: Veritas Netbackup Question
by Ziller, Frank 03 Sep '03

03 Sep '03

There is a way to use NDMP over ethernet versus the SCSI\FCAL with Veritas NBU. Not sure if it requires a dedicated drive however. Possibly worth a look. I think it is called Remote NDMP. -----Original Message----- From: Barry Lustig [mailto:barry-keyword-toasters.2c06cb@lustig.com] Sent: Tuesday, September 02, 2003 7:46 PM To: toasters(a)mathworks.com Subject: Re: Veritas Netbackup Question As a number of people have pointed out, one option is to mount the filer onto the veritas media/master server via NFS or CIFS and then backup the volume. I figured on this as a fall-back option. I was hoping to find another mechanism, via NDMP on the server, to get past this. barry

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RE: Veritas Netbackup Question
by Charles Bartels 02 Sep '03

02 Sep '03

An easy, if not optimal solution, would be to NFS mount the filer onto your Netbackup master server and back that up w/o NDMP. -C. >-----Original Message----- >From: Barry Lustig [mailto:barry-dated-1062974911.42137a@lustig.com] >Sent: Tuesday, September 02, 2003 3:48 PM >To: toasters(a)mathworks.com >Subject: Veritas Netbackup Question > > >I think that I'm in a bit of a quandary. I'm trying to implement >backups using Netbackup 4.5 for a single filer and a handful of unix >and windows clients. I have a single Overland library with a single >tape drive. As far as I can tell, I have to dedicate the single tape >drive to NDMP. This would preclude backing up other systems to that >tape drive. Is there anyone on the list that has run into >this type of >a problem with Netbackup? > >Thanks, > >barry >

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Veritas Netbackup Question
by Barry Lustig 02 Sep '03

02 Sep '03

I think that I'm in a bit of a quandary. I'm trying to implement backups using Netbackup 4.5 for a single filer and a handful of unix and windows clients. I have a single Overland library with a single tape drive. As far as I can tell, I have to dedicate the single tape drive to NDMP. This would preclude backing up other systems to that tape drive. Is there anyone on the list that has run into this type of a problem with Netbackup? Thanks, barry

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RE: qtree copy ?
by ilya.birman＠abnamro.com 02 Sep '03

02 Sep '03

Or Qtree snap mirror "Michel Geldenhuys" To: <devnull(a)adc.idt.com>, "'NetApp Toasters List'" <michel@geldenhuy <toasters(a)mathworks.com> s.com> cc: Sent by: Subject: RE: qtree copy ? owner-toasters@ma thworks.com 09/02/2003 04:14 PM Have you thinked about NDMPcopy ? > -----Original Message----- > From: owner-toasters(a)mathworks.com [mailto:owner-toasters@mathworks.com] > On Behalf Of devnull(a)adc.idt.com > Sent: mardi 2 septembre 2003 21:36 > To: NetApp Toasters List > Subject: qtree copy ? > > I just upgraded to 6.4.1 this weekend and added a disk shelf to my f810. > I had to move some of my projects from one volume to another and couldnt > find like a qtree copy to move a part of the volume. > > I had to use tar from a unix host. > > Would it not be a nice feature to have something that doesnt involve the > network and just goes with the disk shelves. > > Just a thought... > > /dev/null > > devnull(a)adc.idt.com --------------------------------------------------------------------------- This message (including any attachments) is confidential and may be privileged. If you have received it by mistake please notify the sender by return e-mail and delete this message from your system. Any unauthorised use or dissemination of this message in whole or in part is strictly prohibited. Please note that e-mails are susceptible to change. ABN AMRO Bank N.V. (including its group companies) shall not be liable for the improper or incomplete transmission of the information contained in this communication nor for any delay in its receipt or damage to your system. ABN AMRO Bank N.V. (or its group companies) does not guarantee that the integrity of this communication has been maintained nor that this communication is free of viruses, interceptions or interference. ---------------------------------------------------------------------------

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qtree copy ?
by devnull＠adc.idt.com 02 Sep '03

02 Sep '03

I just upgraded to 6.4.1 this weekend and added a disk shelf to my f810. I had to move some of my projects from one volume to another and couldnt find like a qtree copy to move a part of the volume. I had to use tar from a unix host. Would it not be a nice feature to have something that doesnt involve the network and just goes with the disk shelves. Just a thought... /dev/null devnull(a)adc.idt.com

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Netgroups other than with access
by Jose Celestino 02 Sep '03

02 Sep '03

How come you can't use netgroups except with the access directive? -- Jose Celestino | http://xpto.org/~japc/files/japc-pgpkey.asc ---------------------------------------------------------------- "Lately, the only thing keeping me from becoming a serial killer is my distaste for manual labor." -- Dilbert

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Wafliron/WAFL_check in read only mode/tell me if something is wrong, but don't fix mode
by Garrett Burke 02 Sep '03

02 Sep '03

Hi, Due to a snapmirror failing issue, NetApp support have advised us to run wafliron (online) or WAFL_check (offline) on the source volume. They have advised us that there's no way to check a volume while online for errors - a 'tell me if I need to run WAFL_check in fix mode, but don't do anything now' (I realise that WAFL_check prompts before fixing) The issue is that we do not want to schedule offline maintenance with an unkown end time when we don't know if there's anything wrong with the filesystem. We expect that the check to take several hrs as we have 13.5m files & 340G in the volume. Have other run into this before? I see the lack of 'check while online, but don't fix' as a serious flaw with OnTap. Thanks, GB ---- Garrett Burke, Service Implementation & Support Manager, Eircomnet. http://www.eircom.net

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RE: What is the "Type bit scan" that happens after wafliron?
by Charles Roufay 02 Sep '03

02 Sep '03

hi, Type bit scan done on vol The message is part of the inode file upgrade scan that generally occurs after the filer is upgraded to a new major Data ONTAP release, or after WAFL_check is run. "Type bit scan" messages are informative only and can be ignored. charles -----Original Message----- From: Chris Thompson [mailto:cet1@cus.cam.ac.uk] Sent: maandag 1 september 2003 21:43 To: toasters(a)mathworks.com Subject: What is the "Type bit scan" that happens after wafliron? (Running ONTAP 6.3.3) After running wafliron on a volume, the filer generates messages like: Wed Aug 27 19:39:31 BST [wafl_lopri:info]: Volume CUS, wafliron completed. Wed Aug 27 19:39:31 BST [wafl_filesystem_sca:info]: Starting block type initialization on volume CUS ... Thu Aug 28 14:58:41 BST [wafl_lopri:info]: Type bit scan done on vol CUS. This process seems to take a lot longer than the wafliron proper, and uses a significant amount of disk I/O while it is going on. Can anyone give a technical explanation of what this "Type bit scan" is doing? Chris Thompson Email: cet1(a)cam.ac.uk

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toasters