toasters September 2011

toasters@lists.teaparty.net

59 participants
25 discussions

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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Oracle and VMware Datastores
by Tommy.Fallsen＠kongsberg.com 01 Oct '11

01 Oct '11

Hi Im setting a new Oracle Database solution to replace a old Oracle RAC on EVA8400. After reading Oracle Databases on VMware vSphere 4 - Essential Deployment Tips i got a few question still needs answered. Our new storage is a FAS 3240 7-Mode We have a SATA and SAS aggregate and 1TB Flash cache available. SAS 1 Raid Group (16 disks) SATA 4 Raid Group (56 disks) Whats the recommendations for Datastores and VMDK's? >From i can gather i need to create a volume dedicated to Oracle and present(NFS) it as Datastore for Oracle only. And create VMDK's like this: VMDK-1 OS from another Datastore Oracle Datastore VMDK-2 Oracle Binaries VMDK-3 Oracle data VMDK-4 Oracle Redo VMDK-5 Oracle Archivelogs I have 5 databases so 5 VM's where i create a volume with Datastore for each? Would like input from the list how others have done it. - Tommy Fallsen SA/DBA Grunt ________________________________ CONFIDENTIALITY This e-mail and any attachment contain KONGSBERG information which may be proprietary, confidential or subject to export regulations, and is only meant for the intended recipient(s). Any disclosure, copying, distribution or use is prohibited, if not otherwise explicitly agreed with KONGSBERG. If received in error, please delete it immediately from your system and notify the sender properly.

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Re: SMO dumping java hprof files
by Dan Finn 30 Sep '11

30 Sep '11

Thanks Jeffrey, Do you know how I could go about getting more info on those bugs? I just checked on the now site and it does seem like we are running the latest version of SMO, 3.1. Thanks, Dan ________________________________ From: "Steiner, Jeffrey" <Jeffrey.Steiner(a)netapp.com> To: Dan Finn <dan_j_finn(a)yahoo.com> Sent: Friday, September 30, 2011 6:27 AM Subject: RE: SMO dumping java hprof files There is a bug or two fixed in one of the SMO P releases that can lead to java crashes during operations, and the result is this big hprof files left behind. You definitely should investigate. That only happens when a java process crashes. From:Dan Finn [mailto:dan_j_finn@yahoo.com] Sent: Thursday, September 29, 2011 7:09 PM To: toasters(a)teaparty.net Subject: SMO dumping java hprof files Hello, We recently noticed that our / partition on one of our oracle RAC servers was filling up. While investigating I noticed that snap manager for oracle seems to be dumping files under /opt/Netapp/smo named java_pidXXXX.hprof. These files are all around 90 meg. It appears that this has something to do with java being run with the "-XX:+HeapDumpOnOutOfMemoryError". I'm very new to this environment but from what I'm being told, there is no issues with SMO, it's functioning correctly and as it always has. I am a little concerned though that these dumps are being generated due to an out of memory error. Someone did mention that they thought during the initial setup they may have turned on debug logging but they aren't positive and they don't remember how it was turned it on. Has anyone else ever run into this? We are running: SMO 3.1 SnapDrive 4.2 Oracle 11g RHEL 5.4 Using both NFS and FCP ASM is mounting the FCP luns Thanks, Dan

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SMO dumping java hprof files
by Dan Finn 29 Sep '11

29 Sep '11

Hello, We recently noticed that our / partition on one of our oracle RAC servers was filling up. While investigating I noticed that snap manager for oracle seems to be dumping files under /opt/Netapp/smo named java_pidXXXX.hprof. These files are all around 90 meg. It appears that this has something to do with java being run with the "-XX:+HeapDumpOnOutOfMemoryError". I'm very new to this environment but from what I'm being told, there is no issues with SMO, it's functioning correctly and as it always has. I am a little concerned though that these dumps are being generated due to an out of memory error. Someone did mention that they thought during the initial setup they may have turned on debug logging but they aren't positive and they don't remember how it was turned it on. Has anyone else ever run into this? We are running: SMO 3.1 SnapDrive 4.2 Oracle 11g RHEL 5.4 Using both NFS and FCP ASM is mounting the FCP luns Thanks, Dan

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Changing snapmirror destination to a new filer
by Davies, Matt 29 Sep '11

29 Sep '11

Hi, We currently 3 filers, and are looking to move a snap mirrored volume to another filer, we would like to do this without having to recreate a new snapmirror and all the traffic associated with with it. The example is: Filer1 has Vol1 witch is snap mirrored to drfiler1 Vol1 We would like to copy/move Vol1 on drfiler1 to drfiler2, and continue with it being a snap mirror of Vol1 on Filer1, without having to reinitialise the snap mirror Drfiler1 and Drfiler2 are both on the same site so we have no bandwidth restrictions. Is this possible and could someone point me in the right direction of how to do it. Thanks Matt ____________________________ Matt Davies Director of International IT Operations General Atlantic 23 Savile Row London W1S 2ET Tel: +44 207 484 3203 Fax: +44 207 484 2803 Mobile: +44 777 559 4265 ____________________________ ________________________________ _____________________________________________________________ This e-mail (including all attachments) is confidential and may be privileged. It is for the exclusive use of the addressee only. If you are not the addressee, you are hereby notified that any dissemination of this communication is strictly prohibited. If you have received this communication in error, please erase all copies of the message and its attachments and notify us immediately at help(a)generalatlantic.com . Thank You.

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EMC Networker, NetApp CIFS shares
by Andrew Laurence 28 Sep '11

28 Sep '11

Hi all, We're starting to provide CIFS service out of a FAS2040, and we want to establish conventional backups with our existing EMC Networker setup, or our other NetBackup setup. If we use NDMP, is the folder/permissions data in the CIFS volume sucked across, with valid integrity, in the NDMP backups? Our Networker servers are based on Linux. Can Networker attach to the CIFS share directly, and haul across the backups? (Maintaining share/security data per above.) Otherwise, does the Networker/Windows client back up mount points? We could mount the CIFS shares inside a Windows VM, and run the Networker client there, right? Thanks for the help! -Andrew -- Andrew Laurence atlauren(a)uci.edu

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Dir size
by Kennedy, Jeffrey 26 Sep '11

26 Sep '11

drwxrwsr-x 7 owner group 4096 Sep 7 12:39 ./ drwxrwsr-x 4 owner group 4096 Sep 7 10:14 ../ drwxrwsr-x 2 owner group 4096 Sep 7 10:54 dir1/ drwxrwsr-x 2 owner group 335544320 Sep 26 00:30 dir_getsome/ drwxrwsr-x 2 owner group 4096 Sep 7 12:43 dir3/ drwxrwsr-x 4 owner group 4096 Sep 7 10:25 dir4/ drwxrwsr-x 2 owner group 4096 Sep 23 18:12 dir5/ dir_getsome is larger than anything I've ever seen. I did a du on the directory and there is about 15GB of data with just over 3.8M files. I suspect this is a sub-optimal ratio but is it so bad that the metadata for the directory needs to be so large? Jeff Kennedy Qualcomm, Incorporated QCT Engineering Compute 858-651-6592

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RE: Oracle and VMware Datastores
by Page, Jeremy 25 Sep '11

25 Sep '11

If you are concerned about ease of mgmt I would go with NFS ass Jeff recommended, its as easy as VMDK files with out the overhead and additional points of failure (well, assuming IP storage at all). Jeremy Page Andrew Hancock <andrew.hancock(a)cyrus-consultants.co.uk> wrote: I thought I would chip in here, often we use VMDKs for ease, and "we are told" to use RDM for performance. My advice would be to test yourself and benchmark, using IOMeter etc, but also have a read of this article. RDM versus VMDK performance Conclusion: VMFS and RDM have similar performance. Don't choose RDM for performance. Source:http://www.vfrank.org/2011/03/22/performance-rdm-vs-vmfs/ Andrew From: toasters-bounces(a)teaparty.net [mailto:toasters-bounces@teaparty.net] On Behalf Of Steiner, Jeffrey Sent: 23 September 2011 15:14 To: Bill Holland; toasters(a)teaparty.net Subject: RE: Oracle and VMware Datastores I would strongly discourage placing an Oracle database on a VMDK unless it's very small and has very low IO. It might work for you, but the sort of random write IO that happens on an Oracle database doesn't do especially well through a VMDK. In 5 years, I've only had one customer go forward with Oracle on a VMDK and I'm still trying to talk them out of it. NFS mounts right to the guests, iSCSI mounts right to the guest, or an FC RDM will give you much better performance, efficiency, and administrative flexibility. From: Bill Holland [mailto:hollandwl@gmail.com] Sent: Friday, September 23, 2011 2:41 PM To: toasters(a)teaparty.net Subject: Re: Oracle and VMware Datastores 1. Be aware that Oracle's official position is that they do not support Oracle in a virtualized environment beyond the operating system. If there is a problem and you need Oracle's support, they may very well tell you to put it on a physical server before they will support you. 2. Whether you use VMDK's, NFS, or LUNs is going to depend a lot on which OS Oracle is running on and how you plan to protect the data. Also, which version of Oracle you are running. For instance if you are running Oracle 10g in a Windows environment then NFS is out of the question. If running 11g in the same environment, then one could use Direct NFS with Oracle. In a Windows environment Snapdrive for Windows 6.3 has no issue with taking snapshots of LUNs or NFS volumes, prior versions could not deal with NFS so you had to use LUNs if you wanted to use Snapdrive for Windows to handle taking snapshots of your databases. On Fri, Sep 23, 2011 at 4:49 AM, <Tommy.Fallsen(a)kongsberg.com> wrote: Hi Im setting a new Oracle Database solution to replace a old Oracle RAC on EVA8400. After reading Oracle Databases on VMware vSphere 4 - Essential Deployment Tips i got a few question still needs answered. Our new storage is a FAS 3240 7-Mode We have a SATA and SAS aggregate and 1TB Flash cache available. SAS 1 Raid Group (16 disks) SATA 4 Raid Group (56 disks) Whats the recommendations for Datastores and VMDK's? >From i can gather i need to create a volume dedicated to Oracle and present(NFS) it as Datastore for Oracle only. And create VMDK's like this: VMDK-1 OS from another Datastore Oracle Datastore VMDK-2 Oracle Binaries VMDK-3 Oracle data VMDK-4 Oracle Redo VMDK-5 Oracle Archivelogs I have 5 databases so 5 VM's where i create a volume with Datastore for each? Would like input from the list how others have done it. - Tommy Fallsen SA/DBA Grunt _____ CONFIDENTIALITY This e-mail and any attachment contain KONGSBERG information which may be proprietary, confidential or subject to export regulations, and is only meant for the intended recipient(s). Any disclosure, copying, distribution or use is prohibited, if not otherwise explicitly agreed with KONGSBERG. If received in error, please delete it immediately from your system and notify the sender properly. _______________________________________________ Toasters mailing list Toasters(a)teaparty.net http://www.teaparty.net/mailman/listinfo/toasters 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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Re: Oracle and VMware Datastores
by Bill Holland 24 Sep '11

24 Sep '11

1. Be aware that Oracle's official position is that they do not support Oracle in a virtualized environment beyond the operating system. If there is a problem and you need Oracle's support, they may very well tell you to put it on a physical server before they will support you. 2. Whether you use VMDK's, NFS, or LUNs is going to depend a lot on which OS Oracle is running on and how you plan to protect the data. Also, which version of Oracle you are running. For instance if you are running Oracle 10g in a Windows environment then NFS is out of the question. If running 11g in the same environment, then one could use Direct NFS with Oracle. In a Windows environment Snapdrive for Windows 6.3 has no issue with taking snapshots of LUNs or NFS volumes, prior versions could not deal with NFS so you had to use LUNs if you wanted to use Snapdrive for Windows to handle taking snapshots of your databases. On Fri, Sep 23, 2011 at 4:49 AM, <Tommy.Fallsen(a)kongsberg.com> wrote: > Hi > > Im setting a new Oracle Database solution to replace a old Oracle RAC on > EVA8400. > > After reading Oracle Databases on VMware vSphere 4 - Essential Deployment > Tips i got a few question still needs answered. > > Our new storage is a FAS 3240 7-Mode > > We have a SATA and SAS aggregate and 1TB Flash cache available. > > SAS 1 Raid Group (16 disks) > > SATA 4 Raid Group (56 disks) > > > > > > > > Whats the recommendations for Datastores and VMDK's? > > From i can gather i need to create a volume dedicated to Oracle and > present(NFS) it as Datastore for Oracle only. > > And create VMDK's like this: > > > > VMDK-1 OS from another Datastore > > > > Oracle Datastore > > VMDK-2 Oracle Binaries > VMDK-3 Oracle data > VMDK-4 Oracle Redo > VMDK-5 Oracle Archivelogs > > > > I have 5 databases so 5 VM's where i create a volume with Datastore for > each? > > > > Would like input from the list how others have done it. > > > > - Tommy Fallsen > > SA/DBA Grunt > > > > ------------------------------ > > CONFIDENTIALITY > This e-mail and any attachment contain KONGSBERG information which may be > proprietary, confidential or subject to export regulations, and is only > meant for the intended recipient(s). Any disclosure, copying, distribution > or use is prohibited, if not otherwise explicitly agreed with KONGSBERG. If > received in error, please delete it immediately from your system and notify > the sender properly. > > _______________________________________________ > Toasters mailing list > Toasters(a)teaparty.net > http://www.teaparty.net/mailman/listinfo/toasters > >

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Theoretical mixing of disks
by Nick Bernstein 20 Sep '11

20 Sep '11

Hi all, I know the DS2246 supports both SSDs and SAS drives, and I know this is not recommended, but for the purposes of answering a hypothetical question posed to me, is it technically possible to mix ssds and sas drives in the same shelf? Thanks in advance, Nick

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toasters September 2011