toasters

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13529 discussions

SnapMirror delays.
by Ngoh, Clarence 06 Mar '03

06 Mar '03

Hi folks I am having some difficulties tracking down a particular user or qtree that is causing delays on our SnapMirror process. The most relevant information of our setup are this: Filer head : FAS940 OS: DOT 6.3.1 Filername : Let's call it "FilerA" OS to troubleshoot from : Windows, but open sourced solutions welcomed. Filer A contains several different qtrees with different business units. Every so often, the snapshots are SnapMirrored to our DR site. Of late, we noticed that FilerA is lagging behind the DR site by a fair amount of time -- 16 hours. The amount of data transferred for this period is around 15 GB. Please do not offer solutions regarding network latency, as the amount of data change is the cause of the lag. I would like to trace the particular user or qtree that is making this changes. We are using DFM 2.1 for W2K server. DFM did not register data deletions or additions for any business unit -- I suspect then that data changes are the culprits, but where is this coming from? Cheers Clarence. ************** IMPORTANT MESSAGE ************** This e-mail message is intended only for the addressee(s) and contains information which may be confidential. If you are not the intended recipient please advise the sender by return email, do not use or disclose the contents, and delete the message and any attachments from your system. Unless specifically indicated, this email does not constitute formal advice or commitment by the sender or the Commonwealth Bank of Australia (ABN 48 123 123 124) or its subsidiaries. **************************************************

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wafl scan
by Ambrose_Earle＠shamrockfoods.com 06 Mar '03

06 Mar '03

Does anyone have any (good) experience with the wafl scan commands? I am testing Snapmirror and used it to mirror 7x34's to 10x34's. Of course, the data was only written to the first seven drives, so I used 'wafl scan reallocate <volume>' and it seemed to improve the layout quite dramatically. Is this a good use of the command? Other than affecting performance, I'm assuming everything is accessible during the run of this command? Thanks in advance,

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RE: Disk writes occuring when no network activity?
by Art Hebert 06 Mar '03

06 Mar '03

What I did was completely wipe out the netapp and reinstall 6.1.2R3. We are reracking our qa lab so I figured it would be a good time to let our Microsoft admin get to learn how to install a netapp, etc. So its a fresh install and before we put our databases back on it I did a sysstat and noticed the activity. I've let it run overnight so maybe the memory scrubs are finished and that was the activity. I am hoping at some point we can upgrade the netapps we have to the 960's and I can maybe get to attend Netapp training to get some inside knowledge of the boxes. We are running on a nonexistant budget and its tough supporting all this gear without maintenance contracts. art -----Original Message----- From: Borders, Rich [mailto:Rich.Borders@netapp.com] Sent: Thursday, March 06, 2003 2:52 AM To: Art Hebert; toasters(a)mathworks.com Subject: RE: Disk writes occuring when no network activity? Disk Scrubs? Did you just upgrade? > > -----Original Message----- > From: Art Hebert [mailto:art@arzoon.com] > Sent: Wednesday, March 05, 2003 11:02 PM > To: toasters(a)mathworks.com > > > Would anybody know why I have disk writes occurring on my > netapp when it is completely disconnected from the network. > It is doing memory scrubs, but would this cause writes to the disk? > > Here is what sysstat looks like. As you can see there isn't > any nfs, cifs or http activity. On my other filers that are > hooked up to a network the Disk writes go to zero when there > isn't any activity. > > smf760-01*> sysstat 1 > CPU NFS CIFS HTTP Net kB/s Disk kB/s Tape > kB/s Cache > in out read write read > write age > 2% 0 0 0 0 0 0 762 0 > 0 59 > 1% 0 0 0 0 0 0 740 0 > 0 59 > 2% 0 0 0 0 0 0 752 0 > 0 59 > 1% 0 0 0 0 0 0 764 0 > 0 59 > 2% 0 0 0 0 0 0 788 0 > 0 59 > 1% 0 0 0 0 0 0 788 0 > 0 59 > 2% 0 0 0 0 0 0 784 0 > 0 59 > 1% 0 0 0 0 0 0 808 0 > 0 59 > 2% 0 0 0 0 0 0 804 0 > 0 59 > 3% 0 0 0 0 0 156 1108 0 > 0 59 > 2% 0 0 0 0 0 0 824 0 > 0 60 > 1% 0 0 0 0 0 0 868 0 > 0 60 > 2% 0 0 0 0 0 0 888 0 > 0 60 > 4% 0 0 0 0 0 0 880 0 > 0 60 > 2% 0 0 0 0 0 0 844 0 > 0 60 > 2% 0 0 0 0 0 0 892 0 > 0 60 > 2% 0 0 0 0 0 0 872 0 > 0 60 > 1% 0 0 0 0 0 0 880 0 > 0 60 > 2% 0 0 0 0 0 0 884 0 > 0 60 > CPU NFS CIFS HTTP Net kB/s Disk kB/s Tape > kB/s Cache > in out read write read > write age > 1% 0 0 0 0 0 0 852 0 > 0 60 > 4% 0 0 0 0 0 164 1148 0 > 0 60 > > Thanks > > art >

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RE: Disk writes occuring when no network activity?
by Borders, Rich 06 Mar '03

06 Mar '03

Disk Scrubs? Did you just upgrade? > > -----Original Message----- > From: Art Hebert [mailto:art@arzoon.com] > Sent: Wednesday, March 05, 2003 11:02 PM > To: toasters(a)mathworks.com > > > Would anybody know why I have disk writes occurring on my > netapp when it is completely disconnected from the network. > It is doing memory scrubs, but would this cause writes to the disk? > > Here is what sysstat looks like. As you can see there isn't > any nfs, cifs or http activity. On my other filers that are > hooked up to a network the Disk writes go to zero when there > isn't any activity. > > smf760-01*> sysstat 1 > CPU NFS CIFS HTTP Net kB/s Disk kB/s Tape > kB/s Cache > in out read write read > write age > 2% 0 0 0 0 0 0 762 0 > 0 59 > 1% 0 0 0 0 0 0 740 0 > 0 59 > 2% 0 0 0 0 0 0 752 0 > 0 59 > 1% 0 0 0 0 0 0 764 0 > 0 59 > 2% 0 0 0 0 0 0 788 0 > 0 59 > 1% 0 0 0 0 0 0 788 0 > 0 59 > 2% 0 0 0 0 0 0 784 0 > 0 59 > 1% 0 0 0 0 0 0 808 0 > 0 59 > 2% 0 0 0 0 0 0 804 0 > 0 59 > 3% 0 0 0 0 0 156 1108 0 > 0 59 > 2% 0 0 0 0 0 0 824 0 > 0 60 > 1% 0 0 0 0 0 0 868 0 > 0 60 > 2% 0 0 0 0 0 0 888 0 > 0 60 > 4% 0 0 0 0 0 0 880 0 > 0 60 > 2% 0 0 0 0 0 0 844 0 > 0 60 > 2% 0 0 0 0 0 0 892 0 > 0 60 > 2% 0 0 0 0 0 0 872 0 > 0 60 > 1% 0 0 0 0 0 0 880 0 > 0 60 > 2% 0 0 0 0 0 0 884 0 > 0 60 > CPU NFS CIFS HTTP Net kB/s Disk kB/s Tape > kB/s Cache > in out read write read > write age > 1% 0 0 0 0 0 0 852 0 > 0 60 > 4% 0 0 0 0 0 164 1148 0 > 0 60 > > Thanks > > art >

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Disk writes occuring when no network activity?
by Art Hebert 06 Mar '03

06 Mar '03

Would anybody know why I have disk writes occurring on my netapp when it is completely disconnected from the network. It is doing memory scrubs, but would this cause writes to the disk? Here is what sysstat looks like. As you can see there isn't any nfs, cifs or http activity. On my other filers that are hooked up to a network the Disk writes go to zero when there isn't any activity. smf760-01*> sysstat 1 CPU NFS CIFS HTTP Net kB/s Disk kB/s Tape kB/s Cache in out read write read write age 2% 0 0 0 0 0 0 762 0 0 59 1% 0 0 0 0 0 0 740 0 0 59 2% 0 0 0 0 0 0 752 0 0 59 1% 0 0 0 0 0 0 764 0 0 59 2% 0 0 0 0 0 0 788 0 0 59 1% 0 0 0 0 0 0 788 0 0 59 2% 0 0 0 0 0 0 784 0 0 59 1% 0 0 0 0 0 0 808 0 0 59 2% 0 0 0 0 0 0 804 0 0 59 3% 0 0 0 0 0 156 1108 0 0 59 2% 0 0 0 0 0 0 824 0 0 60 1% 0 0 0 0 0 0 868 0 0 60 2% 0 0 0 0 0 0 888 0 0 60 4% 0 0 0 0 0 0 880 0 0 60 2% 0 0 0 0 0 0 844 0 0 60 2% 0 0 0 0 0 0 892 0 0 60 2% 0 0 0 0 0 0 872 0 0 60 1% 0 0 0 0 0 0 880 0 0 60 2% 0 0 0 0 0 0 884 0 0 60 CPU NFS CIFS HTTP Net kB/s Disk kB/s Tape kB/s Cache in out read write read write age 1% 0 0 0 0 0 0 852 0 0 60 4% 0 0 0 0 0 164 1148 0 0 60 Thanks art

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etc/log/snapmirror.log parsing
by Todd C. Merrill 05 Mar '03

05 Mar '03

Has anyone written anything to parse the snapmirror logs to convert: dst Wed Mar 5 03:00:00 EST xxxxx:/vol/vol0/- yyyyy:/vol/vol1/xxxxx_vol0 Request (Scheduled) dst Wed Mar 5 03:00:04 EST xxxxx:/vol/vol0/- yyyyy:/vol/vol1/xxxxx_vol0 Start dst Wed Mar 5 03:51:58 EST xxxxx:/vol/vol0/- yyyyy:/vol/vol1/xxxxx_vol0 End (28215980 KB) into something a bit more useful, like: dst Wed Mar 5 03:51:58 EST bat07:/vol/vol0/- bat00bak:/vol/vol1/bat07_vol0 End (28215980 kB, 00:51:54, 530 MB/min)? which adds elapsed time and transfer rate? Or, something further that completely parses the log and reports: Source Size Elapsed Rate ------------------------------------------------------------------ xxxxx:/vol/vol0/- 28215980 kB 00:51:54 530 MB/min zzzzz:/vol/vol0/qtree 4345164 kB 00:16:13 262 MB/min [...] for all my snapmirror transfers for the night? Until next time... The MathWorks, Inc. 508-647-7000 x7792 3 Apple Hill Drive, Natick, MA 01760-2098 508-647-7001 FAX tmerrill(a)mathworks.com http://www.mathworks.com ---

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RE: etc/log/snapmirror.log parsing
by Yee, Steven 05 Mar '03

05 Mar '03

there is a snapmirror log parsing tool available on the tools section of NOW, if it doesn't do what you want it should be easily extendable (its in perl) from the NOW page blurb: SnapMirror Log Parser (parse_smlog) This Perl script is an example of how the SnapMirror log file can be parsed so that they can be more easily understood. This script runs under Perl5 and should run on most Unix based systems. steve. -----Original Message----- From: Todd C. Merrill [mailto:tmerrill@mathworks.com] Sent: Wednesday, March 05, 2003 8:08 AM To: toasters(a)mathworks.com Subject: etc/log/snapmirror.log parsing Has anyone written anything to parse the snapmirror logs to convert: dst Wed Mar 5 03:00:00 EST xxxxx:/vol/vol0/- yyyyy:/vol/vol1/xxxxx_vol0 Request (Scheduled) dst Wed Mar 5 03:00:04 EST xxxxx:/vol/vol0/- yyyyy:/vol/vol1/xxxxx_vol0 Start dst Wed Mar 5 03:51:58 EST xxxxx:/vol/vol0/- yyyyy:/vol/vol1/xxxxx_vol0 End (28215980 KB) into something a bit more useful, like: dst Wed Mar 5 03:51:58 EST bat07:/vol/vol0/- bat00bak:/vol/vol1/bat07_vol0 End (28215980 kB, 00:51:54, 530 MB/min)? which adds elapsed time and transfer rate? Or, something further that completely parses the log and reports: Source Size Elapsed Rate ------------------------------------------------------------------ xxxxx:/vol/vol0/- 28215980 kB 00:51:54 530 MB/min zzzzz:/vol/vol0/qtree 4345164 kB 00:16:13 262 MB/min [...] for all my snapmirror transfers for the night? Until next time... The MathWorks, Inc. 508-647-7000 x7792 3 Apple Hill Drive, Natick, MA 01760-2098 508-647-7001 FAX tmerrill(a)mathworks.com http://www.mathworks.com ---

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NetApp Logs
by Steve Evans 05 Mar '03

05 Mar '03

Are there any products out there that parse NetApp logs and will just show me/e-mail me/etc the interesting stuff. Steve Evans SDSU Foundation (619) 594-0653

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swapping heads
by Peter D. Gray 05 Mar '03

05 Mar '03

Does anybody know if it safe to simply swap heads between a F720 and a F740 filer? Since the OS and configuration is on the disks I assume this will work ok as long as the OS and/or configuration is not specific to either of these 2 models? Regards, pdg -- See mail headers for contact information.

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RE: swapping heads
by Alan McLachlan 05 Mar '03

05 Mar '03

Hi Peter, How's everything down Wollongong way? Thanswer to your question is yes, bearing in mind that the F720 won't [officially] support as much storage as an F740. They both run alphas so you don't even need to reload OnTap. You must halt the filer properly to make sure NVRAM is flushed. Then power down, swap the heads and boot it up. To go to in Intel based filer head (800 series) you would need to run through the regular OnTap upgrade procedure, including the "download" console instruction, with an Intel version of OnTap first. Then simply halt, power down and swap the heads just as you would normally. regards, Alan. -----Original Message----- From: Peter D. Gray [mailto:pdg@uow.edu.au] Sent: Wednesday, 5 March 2003 9:14 AM To: toasters(a)mathworks.com Subject: swapping heads Does anybody know if it safe to simply swap heads between a F720 and a F740 filer? Since the OS and configuration is on the disks I assume this will work ok as long as the OS and/or configuration is not specific to either of these 2 models? Regards, pdg -- See mail headers for contact information. **** ASI Solutions Disclaimer **** The material transmitted may contain confidential and/or privileged material and is intended only for the addressee. If you receive this in error, please notify the sender and destroy any copies of the material immediately. ASI will protect your Privacy according to the 10 Privacy Principles outlined under the new Privacy Act, Dec 2001. This email is also subject to copyright. Any use of or reliance upon this material by persons or entities other than the addressee is prohibited. E-mails may be interfered with, may contain computer viruses or other defects. Under no circumstances do we accept liability for any loss or damage which may result from your receipt of this message or any attachments. **** END OF MESSAGE ****

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toasters