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13514 discussions

Re: Number of qtrees on a volume?
by Chris Thompson 10 Aug '01

10 Aug '01

I wrote: [...] > It does indeed, but I don't think I believe it: the limit should be > 254 per *volume*. I've confirmed this by creating 254 qtrees in a /vol/test when there are plenty in other volumes as well. On attempting to "qtree create" the 255th, you get the error qtree: cannot create more than 254 qtrees. 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: Number of qtrees on a volume?
by Bond, Andrew 10 Aug '01

10 Aug '01

This is correct. I just tested it to be sure. 254 per volume. Regards, Andrew PS. Chris, I think we both need to get a life - I'm off to do that now! :) > -----Original Message----- > From: Chris Thompson [mailto:cet1@cus.cam.ac.uk] > Sent: 10 August 2001 21:58 > To: nlehrer(a)ibb.gov > Cc: drechsau(a)tiny.net; toasters(a)mathworks.com > Subject: Re: Number of qtrees on a volume? > > > nlehrer(a)ibb.gov (neil lehrer) writes [top'n'tail'd]: > > > > Mike Horwath wrote: > > > > > > Anyone give me an ideas as to the maximum? > > > > > > > man page for 6.x says 254 per filer. > > It does indeed, but I don't think I believe it: the limit should be > 254 per *volume*. The TID values for qtrees in different volumes are > not disjoint. > > 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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Number of qtrees on a volume?
by Mike Horwath 10 Aug '01

10 Aug '01

Anyone give me an ideas as to the maximum? -- Mike Horwath Admin & Manager @ VISI.com WORK: drechsau(a)visi.com IRC: Drechsau http://www.visi.com/ HOME: drechsau(a)geeks.org The only Minnesota ISP with public statistics: http://noc.visi.com/ Garbage In -- Gospel Out. - berkeley fortune(6)

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RE: Number of qtrees on a volume?
by McCarthy, Tim 10 Aug '01

10 Aug '01

256 per volume -----Original Message----- From: Mike Horwath [mailto:drechsau@tiny.net] Sent: Friday, August 10, 2001 3:35 PM To: toasters(a)mathworks.com Subject: Number of qtrees on a volume? Anyone give me an ideas as to the maximum? -- Mike Horwath Admin & Manager @ VISI.com WORK: drechsau(a)visi.com IRC: Drechsau http://www.visi.com/ HOME: drechsau(a)geeks.org The only Minnesota ISP with public statistics: http://noc.visi.com/ Garbage In -- Gospel Out. - berkeley fortune(6)

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qtrees
by Deena Matarazzo 10 Aug '01

10 Aug '01

I have a qtree on a directory and would also like to set some limits on subdirectories within that directory. Is there anyway to do this?

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RE: Direct attaching SCSI tape drives to 760's
by Parsons, Steve 10 Aug '01

10 Aug '01

Andrew, Network Appliance recommends against hot-plugging of SCSI tape and library devices. The 68-pin connector is not defined as a hot-plug connector and does not provide electrical safety for either the adapter or the device. Most of the time, a hot-plug won't hurt anything, but on occasion you'll blow a transceiver. The SCA connector used on disk drives is designed to assure a square connection with ground mating occurring first. The 68-pin connector on tape drives is not so designed. Steve -----Original Message----- From: Andrew Toon [mailto:andrew.toon@tracegroup.com] Sent: Thursday, August 09, 2001 3:58 AM To: 'Paul Letta' Cc: 'toasters(a)mathworks.com' Subject: RE: Direct attaching SCSI tape drives to 760's I have had to remove a d6irectly attached tape drive a few time on my F740. It hasn't caused any problems. However when I attach a new drive it will only recognise it if I do a reboot. I don't know if there's something similar to the Solaris "drvconfig" command but if not it would be a great feature to have. Andrew Toon Technical Services Manager Trace Computers Plc -----Original Message----- From: Paul Letta [ mailto:letta@jlab.org <mailto:letta@jlab.org> ] Sent: 07 August 2001 17:18 To: toasters(a)mathworks.com Subject: Direct attaching SCSI tape drives to 760's Does anybody have any comments in regard to direct attaching SCSI drives 760's ? My concern is what happens when the drives fail ? I seem to have a drive failure rate of 3 or 4 a year. Currently I do not direct attach, so replacing them is no problem. But what happens to the filers when you remove a SCSI tape device hot ? Can you reattach a new one without rebooting the filer ? I do not think my environment would stand for a filer reboot each time a tape drive fails, but I really do not want to live with the 4MB/Sec I get for backups over the network now. Any thoughts? Thanks, Paul Disclaimer This email is confidential and intended solely for the use of the individual to whom it is addressed. Any views or opinions presented are solely those of the author and do not necessarily represent those of Trace Computers PLC. If you are not the intended recipient, be advised that you have received this email in error and that any use, dissemination, forwarding, printing, or copying of this mail is strictly prohibited

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jumbo frames
by Zekeriya Eskiocak 10 Aug '01

10 Aug '01

Hi All, Anybody has experience with using Jumbo Frames in Netapp F740-Oracle8.0&IBM AIX environment? Any recommendation is appreciated. Thanks Zekeriya Eskiocak System Engineer Prolink Services Kayisdagi Cad. No 105 Kucukbakkalkoy 81120 Istanbul-TURKIYE- Work:+90 216 573 73 00 (Ext.107) Mobile:+90 532 761 80 69

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Re: vif's and failover
by mds＠gbnet.net 09 Aug '01

09 Aug '01

Sun's Cluster and the non-clustered IPMP use simple ICMP echo between the active and back-up interfaces to evaluate their health and decide when it's appropriate to fail over. In fact I believe they send an ICMP echo to the appropriate network broadcast address, so that, as long as the switch, a router or a client machine responds failover doesn't take place, and as soon as the network goes suspiciously quiet a failover is undertaken whether the ethernet link is still detected or not. As has been said, it's a fairly basic precaution in a clustered environment to trust as little as possible and to examine the actual service you care about as closely as possible. I also don't believe this is patented, or rocket science. On Thu 9 Aug, 2001, Sam Cramer <cramer(a)netapp.com> wrote: > > Does anyone have any experience with this? Can someone confirm or deny > > the failover in the event of loss of dataflow, but not loss of link? > > The vif code detects the loss of link status, not the loss of dataflow. > Only the loss of link status will cause a failover. > > Sam > >-- End of excerpt from Sam Cramer -- -Mark ... an Englishman in London ...

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Re: vif's and failover
by Sam Cramer 09 Aug '01

09 Aug '01

> Does anyone have any experience with this? Can someone confirm or deny > the failover in the event of loss of dataflow, but not loss of link? The vif code detects the loss of link status, not the loss of dataflow. Only the loss of link status will cause a failover. Sam

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vif's and failover
by Jordan Share 09 Aug '01

09 Aug '01

So, we had a switch fail today. It failed in such a way that link was maintained on the ports, it just didn't pass any packets. When this happened, the vif that I had created on our filer did not switch over to the backup link (on another switch). I initially thought it was because I hadn't set it to check to make sure that traffic was actually flowing out the interfaces. However, then I couldn't find anywhere to actually do that. What's the deal here? Did I totally miss something? How exactly does failover work, anyway? Thanks, Jordan

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