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  • 1.  Maximum extents error

    Posted 3 hours ago

    IHAC with a FS5045 in a Hyperswap setup.  They currently have a single pool on each array, each pool has a single mdisk.  The extent allocation was configured at 1G,

    We wanted to create a new pool per array at an 8G Extent size as this is used to store video and will house much more than it does currently.  We added new drives to their 92F expansion and created the pools, but when attempting to add storage we are getting the error:

    CMMVC9000E The action was not completed because the cluster has reached the maximum number of extents in storage pools.

    Reviewing their Extent allocation:

    :superuser>lsmdiskextent 0 :superuser>lsmdiskextent 16
    id  number_of_extents id  number_of_extents
    0  62923 11 1313
    1  62760 12 2    
    2  62729 14 62799
    3  62804 15 2    
    4  62797 17 62798
    5  62798 18 2    
    6  1313 20 62806
    13 2 21 2    
    16 2 23 62730
    19 2 24 2    
    22 2 26 62762
    25 2 27 2    
    28 2 29 62925
    31 2 30 2    

    Based on my quick math we are shy of 768K Extents utilized between both systems.  Extents on a 5045 are still 2^22 right?  Wouldn't we have 3+Million extents to utilize at the system level?  

    :superuser>lsmdiskgrp 2 | grep -e 8G -e extent -e name
    name CCC_NL-8Gext-Pool
    extent_size 8192

    :superuser>lsmdiskgrp 3 | grep -e 8G -e extent -e name
    name JCCH_NL-8Gext-Pool
    extent_size 8192

    Ultimately I want to create these new pools, move the existing data into them and remove the old pools so we can ingest those drives into the 8G extent pools. 

    It would be possible (not excited about this option) to delete the hyperswapped copy of the volumes to free those extents up, but based on my math we should have sufficient extents to create these pools at 8G and then be able to perform some of the needed data moves to get back to full redundancy.

    Any help would be appreciated.  Thanks all.



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    Shaun Anderson
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