10 Replies Latest reply: Jul 10, 2013 10:34 AM by martin.fisher RSS

Unable to expand lun with Snapdrive 6.5.0.5474

deshaw
Currently Being Moderated

Hi,

 

We have SQL cluster with two nodes. We have lun of 1000 GB and we unable to expand the lun any further. There is enough space in the volume but the snapdrive doesn't recognize the available space and doesn't and we are running Snapdrive 6.5.0.5474 on both the nodes. Are there any limitations with the version of snapdrive we are running? I believe this is latest version available for download on Netapp site. Please advise.

 

Thanks.

  • Re: Unable to expand lun with Snapdrive 6.5.0.5474
    ASHWANI8HIGHS
    Currently Being Moderated

    Hi ,

    Can you please provide the status of the volume which holding this lun like

    volume current usage  (df -g )  , vol status ,vol options and if that volume is also holding any other lun  ?

     

    Thanks ,

    Ashwani

  • Re: Unable to expand lun with Snapdrive 6.5.0.5474
    martin.fisher
    Currently Being Moderated

    Surprised if this doesnt work in the latest release of SnapDrive!! As Ashwani asked. whats the output of df-g for the affected volume

    • Re: Unable to expand lun with Snapdrive 6.5.0.5474
      deshaw
      Currently Being Moderated
      Filesystem           total   used  avail Capacity Mount
      /vol/volXXX_data0/ 3328GB 2347GB  980GB  71% 
      /vol/volXXX_data0/.snapshot    0GB  413GB    0GB ---% 

       

      Above is df -g output for the volume.

      • Re: Unable to expand lun with Snapdrive 6.5.0.5474
        ASHWANI8HIGHS
        Currently Being Moderated

        Hi ,

         

        Sorry for not  asking  the below  things 1st time  .

        Please also provide the  ">vol option volume_name "  output &  details of other lun if any in this volume

         

        Thanks

        Ashwani

      • Re: Unable to expand lun with Snapdrive 6.5.0.5474
        martin.fisher
        Currently Being Moderated

        Could you post the output of "lun show -v <lun name>" for the LUN's in the SQL cluster

        Thanks

        • Re: Unable to expand lun with Snapdrive 6.5.0.5474
          deshaw
          Currently Being Moderated

          I dont think there are any other luns in the volume. Below is the output. Thanks for the response.

           

          fs*> vol options  /vol/XXX_data0

          nosnap=off, nosnapdir=off, minra=off, no_atime_update=on, nvfail=off,

          ignore_inconsistent=off, snapmirrored=off, create_ucode=on,

          convert_ucode=on, maxdirsize=335462, schedsnapname=ordinal,

          fs_size_fixed=off, compression=off, guarantee=volume, svo_enable=off,

          svo_checksum=off, svo_allow_rman=off, svo_reject_errors=off,

          no_i2p=off, fractional_reserve=100, extent=off, try_first=volume_grow,

          read_realloc=off, snapshot_clone_dependency=off, nbu_archival_snap=off

           

          fs*> lun show -v  /vol/XXX_data0/data0/data0.lun

              /vol/XXX_data0/data0/data0.lun 1004.0g (1078087449600) (r/w, online, mapped)

                  Comment: " "

                  Serial#: Hn/8N4c1s6L4

                  Share: none

                  Space Reservation: enabled

                  Multiprotocol Type: windows_2008

                  Maps: dbnyc2d=3 dbnyc2c=10 viaRPC.iqn.1991-05.com.microsoft:dbnyc2a.deshaw.com=11 dbnyc2b=11

                  Occupied Size:  924.3g (992494899200)

                  Creation Time: Mon Apr  4 16:58:42 EDT 2011

                  Alignment: aligned

                  Cluster Shared Volume Information: 0x1

          • Re: Unable to expand lun with Snapdrive 6.5.0.5474
            deshaw
            Currently Being Moderated

            Well, I found this article. And the Maxsize of the lun it set to 1 TB. Is there a way to change the max limit for the lun?

             

            http://mtellin.com/2010/02/04/maximum-lun-resize-limits-on-netapp/

             

            SCSI Disk Geometry:
                         512 bytes/sector
                         126 sectors/track
                         255 tracks/cylinder (heads)
                       32130 sectors/cylinder
                       65535 cylinders
                  2105639550 sectors
                    16450560 cylinder size (15 MB)
               1078087449600 device size (1028144 MB)
               1078087449600 max resize size (1028144 MB)

            • Re: Unable to expand lun with Snapdrive 6.5.0.5474
              martin.fisher
              Currently Being Moderated

              Hi deshaw. Please run the following coomand:
              lun maxsize <path>

               

              This should give an output like this:

              lun maxsize /vol/LS_ESX5i_SC01_DATASTORE_vol

              Space available for a LUN of type: solaris, aix, hpux, linux, netware, vmware, openvms, xen, solaris_efi or image

                      Without snapshot reserve: 204g (219043332096)

                      With snapshot reserve: 204g (219043332096)

                      With complete snapshot reserve: 102g (109521666048)

              Space available for a LUN of type:  windows, windows_gpt, windows_2008 or hyper_v

                      Without snapshot reserve: 203g (219039206400)

                      With snapshot reserve: 203g (219039206400)

                      With complete snapshot reserve: 101g (109511377920)

               

               

              Looking at the outputs below you have space guarantee's at the volume level and your fractional reserve also set at 100%

               

              I dont think there are any other luns in the volume. Below is the output. Thanks for the response.

               

              fs*> vol options  /vol/XXX_data0

              nosnap=off, nosnapdir=off, minra=off, no_atime_update=on, nvfail=off,

              ignore_inconsistent=off, snapmirrored=off, create_ucode=on,

              convert_ucode=on, maxdirsize=335462, schedsnapname=ordinal,

              fs_size_fixed=off, compression=off, guarantee=volume, svo_enable=off,

              svo_checksum=off, svo_allow_rman=off, svo_reject_errors=off,

              no_i2p=off, fractional_reserve=100, extent=off, try_first=volume_grow,

              read_realloc=off, snapshot_clone_dependency=off, nbu_archival_snap=off

               

              fs*> lun show -v  /vol/XXX_data0/data0/data0.lun

                  /vol/XXX_data0/data0/data0.lun 1004.0g (1078087449600) (r/w, online, mapped)

                      Comment: " "

                      Serial#: Hn/8N4c1s6L4

                      Share: none

                      Space Reservation: enabled

                      Multiprotocol Type: windows_2008

                      Maps: dbnyc2d=3 dbnyc2c=10 viaRPC.iqn.1991-05.com.microsoft:dbnyc2a.deshaw.com=11 dbnyc2b=11

                      Occupied Size:  924.3g (992494899200)

                      Creation Time: Mon Apr  4 16:58:42 EDT 2011

                      Alignment: aligned

                      Cluster Shared Volume Information: 0x1

               

               

              if you put the CLI in diag mode, you can run a LUN Geometry and this will tell you the max size that the LUN can be grown to, example:

              lun geometry /vol/LS_ESX5i_SC01_DATASTORE_vol/LS_ESX5i_SC01-DATASTORE

              SCSI Disk Geometry:

                           512 bytes/sector

                          2048 sectors/track

                            16 tracks/cylinder (heads)

                         32768 sectors/cylinder

                          9600 cylinders

                     314572800 sectors

                      16777216 cylinder size (16 MB)

                  161061273600 device size (153600 MB)

                 1099494850560 max resize size (1048560 MB)

               

              If you can grow your LUN further, then you need to amend your Fractional Reserve and Guarantee settings.

              Martin

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