Network Attached Storage​

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  • 1.  Remove SDs from NAS Storage Pool

    Posted 17 days ago

    Hello,

    how can i remove SDs from an NAS Storage Pool? What i have found so far, is to use the span-unmap-vacated-chunks command and then remove the Pool Volumes. But i couldn't find how to remove them in a correct way. Would it be correct to deny access to the SDs i want to remove and then forget the SDs and unmap them on the Storage Controller?

    Regards

    Miran



    ------------------------------
    Miran Kreuzer
    3 Banken IT GmbH
    ------------------------------


  • 2.  RE: Remove SDs from NAS Storage Pool

    Posted 17 days ago

    Hello Miran,

    I'm sure one of you wonderful Global Delivery folks you've worked with could assist in this conversation, but I'm unable to tag them here for awareness.

    What they would tell you is that filesystems are no shrinkable and thus neither is a span.

    Below is an example of what I mean - there is a single span with 32 SD's and multiple filesystems. One cannot 'remove' any SD's, this is fundamentally impossible.

    1. unmount all filesystems
    2. delete all filesystems
    3. recycle all filesystems
    4. unmap all vacated chunks on span (this could take time) as this returns space to the HDP pool
    5. delete span
    6. deny access to all SD's
    7. using Storage Navigator, unmap LUNs from all ports
    8. forget the SD's

    I wager this is not what you would like to do.

    <span-list -fsv for pnode 2>
    Span instance name     OK?  Free  Cap/GiB  Chunks                 Con  Snap  Cod fullness    Cluster  Permanent ID      DWB  HDP free
    ---------------------  ---  ----  -------  ---------------------  ---  ----  --------------  -------  ----------------  ---  --------
    NAS_OBR_DL             Yes   56%   166400   9244 x   19327352832  90%          7%, 12%, 19%  This     2BCB92CD790C15DB  Yes   1330509
    
       On HDP pool 0 with 1330509GiB free, shared with NAS_ORA_DL and NAS_SQL_DL
       Set 0: 32 x 5200GiB = 166400GiB, of which 94454GiB is free, 0GiB is vacated, 94454GiB is available
          SD 128 (rack '448664', SD '0B00')
          SD 129 (rack '448664', SD '0B01')
          SD 130 (rack '448664', SD '0B02')
          SD 131 (rack '448664', SD '0B03')
          SD 132 (rack '448664', SD '0B04')
          SD 133 (rack '448664', SD '0B05')
          SD 134 (rack '448664', SD '0B06')
          SD 135 (rack '448664', SD '0B07')
          SD 136 (rack '448664', SD '0B08')
          SD 137 (rack '448664', SD '0B09')
          SD 138 (rack '448664', SD '0B0A')
          SD 139 (rack '448664', SD '0B0B')
          SD 140 (rack '448664', SD '0B0C')
          SD 141 (rack '448664', SD '0B0D')
          SD 142 (rack '448664', SD '0B0E')
          SD 143 (rack '448664', SD '0B0F')
          SD 144 (rack '448664', SD '0B10')
          SD 145 (rack '448664', SD '0B11')
          SD 146 (rack '448664', SD '0B12')
          SD 147 (rack '448664', SD '0B13')
          SD 148 (rack '448664', SD '0B14')
          SD 149 (rack '448664', SD '0B15')
          SD 150 (rack '448664', SD '0B16')
          SD 151 (rack '448664', SD '0B17')
          SD 152 (rack '448664', SD '0B18')
          SD 153 (rack '448664', SD '0B19')
          SD 154 (rack '448664', SD '0B1A')
          SD 155 (rack '448664', SD '0B1B')
          SD 156 (rack '448664', SD '0B1C')
          SD 157 (rack '448664', SD '0B1D')
          SD 158 (rack '448664', SD '0B1E')
          SD 159 (rack '448664', SD '0B1F')
    
       fs LNZFS01_3banken_1    RepTg, EVS    1, cap   10224, con   10240  , perm 2BCB917C14983D34, dev 1024,  4KiB, WFS-2, DSBs: 128, DWB: Yes , Thin:  No, AX: ????
      Filesystem LNZFS01_3bankenintras_1:
       fs LNZFS01_..nintras_1  RepTg, EVS    1, cap     306, con     550  , perm 2BC85008120B35F2, dev 1026,  4KiB, WFS-2, DSBs: 128, DWB: Yes , Thin:  No, AX: ????
       fs LNZFS01_CIFSDIV      RepTg, EVS    1, cap    1278, con    1536  , perm 2BC8510398D17EE8, dev 1027,  4KiB, WFS-2, DSBs: 128, DWB: Yes , Thin:  No, AX: ????
       fs LNZFS01_LNZWRKFLX01  RepTg, EVS    1, cap    2178, con    3072  , perm 2BC341A35ACABBA8, dev 1049,  4KiB, WFS-2, DSBs: 128, DWB: Yes , Thin:  No, AX: ????
       fs LNZFS01_btvdaten_1   RepTg, EVS    1, cap    2232, con    2458  , perm 2BC80254C65F85CC, dev 1030,  4KiB, WFS-2, DSBs: 128, DWB: Yes , Thin:  No, AX: ????
       fs LNZFS01_dbedaten_1   RepTg, EVS    1, cap    5112, con    6144  , perm 2BC8BBCDC4E25CAF, dev 1033,  4KiB, WFS-2, DSBs: 128, DWB: Yes , Thin:  No, AX: ????
       fs LNZFS01_dbedaten_2   RepTg, EVS    1, cap   11952, con   12288  , perm 2BC34416A56011FE, dev 1050,  4KiB, WFS-2, DSBs: 128, DWB: Yes , Thin:  No, AX: ????
       fs LNZFS01_dbvdaten_1   RepTg, EVS    1, cap     432, con     862  , perm 2BC86F120FCF0A1E, dev 1025,  4KiB, WFS-2, DSBs: 128, DWB: Yes , Thin:  No, AX: ????
       fs LNZFS01_obkdaten_1   RepTg, EVS    1, cap   18720, con   20480  , perm 2BC841709C478675, dev 1029,  4KiB, WFS-2, DSBs: 128, DWB: Yes , Thin:  No, AX: ????
       fs LNZFS01_obkdaten_2   RepTg, EVS    1, cap   10980, con   14336  , perm 2BC8F0625C01DBFF, dev 1032,  4KiB, WFS-2, DSBs: 128, DWB: Yes , Thin:  No, AX: ????
       fs LNZFS01_obkdaten_3   RepTg, EVS    1, cap    8532, con    9421  , perm 2BC344B47D8779B7, dev 1051,  4KiB, WFS-2, DSBs: 128, DWB: Yes , Thin:  No, AX: ????


    ------------------------------
    Albert Hagopian
    Software Development Engineer - Specialist
    Hitachi Vantara
    ------------------------------



  • 3.  RE: Remove SDs from NAS Storage Pool

    Posted 16 days ago

    Hello Albert!

    Thanks for your quick reply and all the detailed Info you gave me! In the meantime i also got nearly the same response from our HNAS Consultant, which confirms your described Order of solving the SD Problem.

    Regards

    Miran



    ------------------------------
    Miran Kreuzer
    3 Banken IT GmbH
    ------------------------------