toasters October 2011

toasters@lists.teaparty.net

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by Bryan West 01 Nov '11

01 Nov '11

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List administrivia
by Tom Yates 31 Oct '11

31 Oct '11

Regarding out-of-sequence messages: yes, I'm aware that messages are arriving out-of-sequence again. This is caused by people posting from addresses other than those by which they are subscribed. In what I think is fairly standard anti-spam behaviour for 21st Century mailing lists, this one holds (for moderation) posts from apparently-unsubscribed users. For fastest, and therefore sequential, throughput, *please post from the address at which you have subscribed*. Regarding unsubscriptions: the list engine doesn't deal well with "unsubscribe" requests sent (a) to the full list (b) from an address at which you're not subscribed; I'm not convinced this is the engine's fault. If you want to unsubscribe, there is automated assistance in the headers of every single list message, which most decent mailers will present to you. Every subscriber also gets a reminder on the first of every month that outlines several other methods for unsubscribing, and in the limiting case, you can ask me. Regarding the old archives: I'm still working on it. Regarding the choice of domain name: on Wed, 24 Aug 2011, I wrote: > So if anyone feels strongly enough about this to want to arrange some > kind of forum for this discussion, please contact me off-list so we can > put something together without boring all the people that would much > prefer to read about disc shelf FCAL issues. I'll repeat: please, let's > not continue this discussion here. Although some people have kindly registered alternative domain names, discussion has continued and *noone* has approached me as I requested. I remain open to an off-list approach, where I will be happy to explain _inter alia_ why I haven't favoured the alternative-domain-name solution. If some kind of proposal for change gets traction you can all expect to read a "please go here to vote"-type post. Otherwise, I am fed up reading this stuff on-list, and although I accept that there are still some subscribers who have reservations, I also know there's a body of subscribers that agrees with me. So since it's currently on my server, I will presume to lay down the law a little, for which I beg your collective forgiveness. I will unsubscribe anyone who restarts the domain name issue. If you're leaving the list as you do it, I'll ban you from re-subscribing. Please, *shut up* about the issue on-list. -- Tom Yates - http://www.teaparty.net

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Is there a graph somewhere of performance vs raid group size?
by Cotton, Randall 31 Oct '11

31 Oct '11

We're a relatively small shop just getting started with NetApp (1 2020 and 2 2040's all active/active, plus 3 4342's for the 2040's ). Since committing a disk to a raid group via an aggregate is essentially a permanent thing (you can't change your mind and later shrink an aggregate to pull out a disk from a raid group to use with another node), we'd prefer not to put all our (80) disks in aggregates just yet. We might want more in some nodes and less in other nodes as future needs come into clearer focus. In addition, it's clear that we can later easily add in any disks we've held back as needed and use the reallocate command with the -f option to re-optimize the layout to accommodate the added disks efficiently. So it seems a bit short-sighted to configure all 80 of our disks into aggregates among our 6 nodes right from the get-go (minus the requisite hot spares, of course), as our vendor would have us do. But in deciding how small to start out with, we don't want to cripple our performance too much. I've looked long and hard on the net to find some data, any data, on DOT 7.x performance vs raid group size, but have come up empty. I understand that performance should be awful and unacceptable if you have a raid group of size 3. I also understand from anecdotal evidence that performance improvements from higher raid group sizes are apparently are not significant once you get to a raid group size of 16 or so. But what about in between? How does a graph of performance vs raid size look from 3 to, say, 20? Just ballpark data on any type of remotely typical workload would help a lot to start with. Has anyone ever seen or tried to compile this kind of data? Using iometer, perhaps, or any other benchmarking tool? RAID-DP data is preferable, but I'd take RAID-4 data if that's all I can get. Don't really have the time to do testing myself. Thanks Randall Cotton University of Illinois Foundation

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Re: R: 8.1 64 bit upgrades.
by Fred Grieco 23 Oct '11

23 Oct '11

Is this true for any box or rev level? Sent from Yahoo! Mail on Android

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8.1 64 bit upgrades.
by Jeff Cleverley 22 Oct '11

22 Oct '11

Greetings, I've starting playing around with the 8.1 RC1 release. I want to upgrade some aggregates from 32 bit to 64 bit. From what I can tell, the only way to do this is to add additional disks to an existing aggregate. Is that correct? I've got one filer with limited disks and don't want to add 1 additional disk to a raid group. I don't want to do all the associated reallocates to smooth out the data allocation. Thanks, Jeff -- Jeff Cleverley Unix Systems Administrator 4380 Ziegler Road Fort Collins, Colorado 80525 970-288-4611

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TOE fun?
by Mark Flint 21 Oct '11

21 Oct '11

Hi all, I recently upgraded a V3140 to 8.0.2P1, and all went well apparently. I'n now seeing strange NFS/CIFS behaviour, where a client will make a connection succesfully, but when the client requests a read, the filer FIN ACK's instantly, for no reason I can work out. Got a call open with netapp, but they seem a little fazed by it as well. Anyone seen something similar and can point me? It does seem like it's a TOE problem, but I have TOE turned off on the NIC's, but am wondering if ONTAP is doing something behind the scenes maybe? Thanks, ~Mark mf1(a)sanger.ac.uk -- The Wellcome Trust Sanger Institute is operated by Genome Research Limited, a charity registered in England with number 1021457 and a company registered in England with number 2742969, whose registered office is 215 Euston Road, London, NW1 2BE.

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head swap in a fas2050a in a nfs only environment
by Luca Domenella 13 Oct '11

13 Oct '11

Hi guys, i have 2 fas2050a used only with NFS protocol. I need to reinstall one from scratch and snapmirror the data in it. After that I want to swap (one by one) the heads from the other fas2050a in order to dont change the support contract from this storage. Do you see any issue in performing the head swap ? Best regards, Luca Domenella T: +39 0698962316 E: <mailto:luca.domenella@bwinparty.com> luca.domenella(a)bwinparty.com bwin Italia Via Adolfo Ravà, 124 00142 Roma (RM) <http://www.bwinparty.com/> www.bwinparty.com This email and any attachments are confidential, and may be legally privileged and protected by copyright. If you are not the intended recipient dissemination or copying of this email is prohibited. If you have received this in error, please notify the sender by replying by email and then delete the email completely from your system. Any views or opinions are solely those of the sender. This communication is not intended to form a binding contract unless expressly indicated to the contrary and properly authorised. Any actions taken on the basis of this email are at the recipient's own risk.

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weird name mapping issues - using LDAP for name services
by Page, Jeremy 13 Oct '11

13 Oct '11

We are using Active Directroy for LDAP on our Linux clients. I'd like to set up the filer to be able to resolve the usernames both directions but I'm having a couple of issues. Filers are running 7.3.3. I have had this working before at a previous job but I am missing something & the docs are not quite as helpful as I'd like. 1) I can't get LDAP working at all (getXXbyYY is not working even though I see the filer connecting to the DC on the appropriate port but I'm missing something. 2) Not all users have rfc2307 information set, ideally I'd use their samaccountname for both (it always matches). 3) I am in a multiforest environment, I'd like to use Global Catalogs for my lookups instead of normal DC's & do it on the GC port so it can retrieve info for any user on my network. This may not be possible, I am not sure. NIS works fine, if I am not able to get this to work I'm either going to have to script a dump of AD to NIS or use the MS tools to do the same thing and do this with a usermap.cfg. Either possibility is ugly so any suggestions would be appreciated. I've tried changing the ldap.minimum_bind_level to simple but it does not appear to help. dr-array02*> options ldap ldap.ADdomain ldap.base dc=site,dc=company,dc=com ldap.base.group dc=site,dc=company,dc=com ldap.base.netgroup ldap.base.passwd dc=site,dc=company,dc=com ldap.enable on ldap.minimum_bind_level anonymous ldap.name cn=ldap-auth-proxy,ou=ldap,ou=services,dc=site,dc=company,dc=com ldap.nssmap.attribute.gecos gecos ldap.nssmap.attribute.gidNumber gidNumber ldap.nssmap.attribute.groupname cn ldap.nssmap.attribute.homeDirectory unixHomeDirectory ldap.nssmap.attribute.loginShell loginShell ldap.nssmap.attribute.memberNisNetgroup memberNisNetgroup ldap.nssmap.attribute.memberUid memberUid ldap.nssmap.attribute.netgroupname cn ldap.nssmap.attribute.nisNetgroupTriple nisNetgroupTriple ldap.nssmap.attribute.uid uid ldap.nssmap.attribute.uidNumber uidNumber ldap.nssmap.attribute.userPassword userPassword ldap.nssmap.objectClass.nisNetgroup nisNetgroup ldap.nssmap.objectClass.posixAccount posixAccount ldap.nssmap.objectClass.posixGroup posixGroup ldap.passwd ****** ldap.port 389 ldap.servers vm-sitedc01.site.company.com ldap.servers.preferred ldap.skip_cn_unescape.enable on ldap.ssl.enable off ldap.timeout 20 ldap.usermap.attribute.unixaccount uid ldap.usermap.attribute.windowsaccount sAMAccountName ldap.usermap.base ldap.usermap.enable on Please be advised that this email may contain confidential information. If you are not the intended recipient, please notify us by email by replying to the sender and delete this message. The sender disclaims that the content of this email constitutes an offer to enter into, or the acceptance of, any agreement; provided that the foregoing does not invalidate the binding effect of any digital or other electronic reproduction of a manual signature that is included in any attachment.

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Migrate Solaris FC LUN to Linux iSCSI ?
by Steve Losen 11 Oct '11

11 Oct '11

Hi toasters, Is it possible to take a Solaris FC LUN and attach it to Linux via iSCSI? I suspect problems since the "lun create" command needs to know the OS type (solaris in this case). I don't think FC to iSCSI is a problem, though. Naturally we would love to "just move" the LUNs without creating new Linux LUNs and copying the data from Solaris to Linux. In case you are wondering about the FS on the LUNs, this is disk cache for a StorNext filesystem and we want to replace our very old Solaris hardware with Linux "in place". Otherwise it would take literally months to migrate the data since StorNext is a tape backed hierarchical FS. If we can't do this hardware upgrade in place, then we will soldier on on the old Solaris hardware and cross our fingers. We intend to replace StorNext eventually but want to get off the old Solaris hardware in the interim if possible. Steve Losen scl(a)virginia.edu phone: 434-924-0640 University of Virginia ITC Unix Support

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Snapvault advice
by Unnikrishnan KP 07 Oct '11

07 Oct '11

Hello all, We are planing a snapvault backup of data from a snapmirror destination. Most of the volumes that are to be snapvaulted are luns in qtrees. The rest are nas data. I was looking at different ways to do this and came up with the following conclusion for block data: 1. Run a snapvault update on the _recent copy. Schedule a snapvault snap sched on the secondary after the update. This require a bit of scripting and schedules. 2. The best practises guide recommends using the SnapManager product for sv backups. Since this too require a level of scripting; I am not sure what difference it would make. Also this requires rsh access to the filers which we do not permit. As for the NAS volumes; the snapmirror source will need to be setup with a snavault snap sched schedule (something that happens before a snapmirror transfer). This snapshot will then be snapmirrored to the SM destination. The SV secondary snapvault schedule will have a snapvault -x schedule that happens after the SM transfers complete. The other option would be to follow the same pattern as option 1 used for block data. Just wondering if any of you have faced this issue and what was done in your environment? Any feedback on this will be apprecated. Regards, Unnikrishnan KP

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toasters October 2011