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    PERC H730P Mini - Multiple LV's

    IT Discussion
    lvm raid perc h730 raid controller hardware raid storage
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    • DustinB3403D
      DustinB3403 @BRRABill
      last edited by

      @BRRABill I believe it's the XenServer Practical Guides and Tips book . . .

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      • momurdaM
        momurda @BRRABill
        last edited by

        @BRRABill
        • XenServer Administration Handbook: Practical Recipes for Successful Deployments

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        • DustinB3403D
          DustinB3403
          last edited by

          Ha. . . . .

          So everyone get ready for a kicker.

          Did a 6.5 install to a 16GB usb with the same OBR10 array (15TB) and selected it as the default SR during installation.

          And I now have a Local SR of 15TB on an XS6.5 installation, with no additional configuration....

          Um WTF did we all do wrong before?

          momurdaM 1 Reply Last reply Reply Quote 1
          • momurdaM
            momurda @DustinB3403
            last edited by

            @DustinB3403
            You were trying to use ext type for thin provisioning rather than the default for large SR of type lvm

            DustinB3403D 1 Reply Last reply Reply Quote 0
            • DustinB3403D
              DustinB3403 @momurda
              last edited by

              @momurda said in PERC H730P Mini - Multiple LV's:

              @DustinB3403
              You were trying to use ext type for thin provisioning rather than the default for large SR of type lvm

              You'd think, but I went through this not to long ago, and I specifically didn't choose thin provisioning to test and had to add the SR manually.

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              • momurdaM
                momurda
                last edited by

                Yes I remember, but it did work as type lvm eventually. Not sure why it didn't on install, ive not had a problem with it yet myself.
                Also, is there a 'Guided using entire disk with lvm' option in XS installer?(I cant remember) perhaps that option is where the magic happens. Without it maybe you have to add the large SR manually.

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                • stacksofplatesS
                  stacksofplates @momurda
                  last edited by stacksofplates

                  @momurda said in PERC H730P Mini - Multiple LV's:

                  ext2 and ext3 don't know anything over the existence of 2TB, but you can use type lvm to do this locally(looks like you have done this). If XS doesn't have support for ext4 natively I don't think you can use ext4 file systems for anything in XS.
                  ext4 would work if you can mount it as an ext type SR in XS, but you probably cant, and will have to use lvm type locally for large SR
                  If you want thin provisioning on large shared SRs, use NFS instead of iscsi.

                  This was all in that Xenserver book I just got and read through.

                  There is also The Tobias reply to this topic
                  http://discussions.citrix.com/topic/373709-adding-storage-to-xenserver/

                  This Xenserver 7 blog that states why ext4 support is missing in XS 7 (although it is coming in the future)
                  https://www.citrix.com/blogs/2016/06/30/xenserver-7-building-the-foundations-of-a-great-future/

                  You may be wondering why the move to CentOS 7 didn’t automatically mean that XenServer 7 acquired various features and mechanisms that CentOS 7 happens to have, such as SELinux or the XFS filesystem. This is because the domain 0 Linux platform is a component of the XenServer system (rather than XenServer being an application that runs on top of Linux) and is therefore tightly integrated into the overall system – when we upgrade components of the system our first priority is to ensure a like-for-like upgrade which preserves the integrity, functionality, quality, performance and security of the system. If the new component comes with new mechanisms that didn’t exist in the older version, we carefully consider if and how we can integrate those new mechanisms into the XenServer system (for example moving from ext3 to XFS would require careful consideration for XenServer upgrade and rollback use-cases and therefore isn’t a transparent change) – these additional integrations may come in later releases than the underlying component upgrade.

                  That's ridiculous. Id much rather have SELinux, XFS, and other advancements over backwards/forward compatibility. Give people real V2V tools and with that and xva's backwards/forward compatibility won't matter.

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                  • momurdaM
                    momurda
                    last edited by

                    Hey, I'm just italicizing what XS blog guy said.

                    stacksofplatesS 1 Reply Last reply Reply Quote 1
                    • stacksofplatesS
                      stacksofplates @momurda
                      last edited by

                      @momurda said in PERC H730P Mini - Multiple LV's:

                      Hey, I'm just italicizing what XS blog guy said.

                      I know. Sorry on my phone and didn't feel like trying to quote just his quote.

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                      • DashrenderD
                        Dashrender
                        last edited by

                        What are XVAs?

                        stacksofplatesS 1 Reply Last reply Reply Quote 0
                        • momurdaM
                          momurda
                          last edited by momurda

                          Xen Virtual Appliance file. I think it is just a container for ovf types.
                          edit: it is a container for ova types, which are containers for ovf types.

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                          • stacksofplatesS
                            stacksofplates @Dashrender
                            last edited by

                            @Dashrender said in PERC H730P Mini - Multiple LV's:

                            What are XVAs?

                            Its the format that XenServer exports snapshots to. Some compressed format that has to be stitched back together to get a usable disk out of it. So the only way to export from XenServer to something else is to uncompress the file and untar it. Then stitch all of the files back together.

                            1 Reply Last reply Reply Quote 1
                            • T
                              Texkonc
                              last edited by

                              I thought you were the Xen god?
                              I heard you knock on doors to spread the gospel.

                              stacksofplatesS 1 Reply Last reply Reply Quote 1
                              • stacksofplatesS
                                stacksofplates @Texkonc
                                last edited by

                                @Texkonc said in PERC H730P Mini - Multiple LV's:

                                I thought you were the Xen god?
                                I heard you knock on doors to spread the gospel.

                                Me or Dash?

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                                • T
                                  Texkonc
                                  last edited by

                                  Dustin

                                  stacksofplatesS 1 Reply Last reply Reply Quote 0
                                  • stacksofplatesS
                                    stacksofplates @Texkonc
                                    last edited by

                                    @Texkonc said in PERC H730P Mini - Multiple LV's:

                                    Dustin

                                    Oh ok

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