General Discussion

  • 1.  Disk usage different in Solaris OS and Hitachi storage

    Posted 16 days ago

    Dear all,

    I removed all files of a LUN on Solaris OS.
    Hitachi storage device still shows 99% used. I have reclaimed the LUN, but it doesn't change the status.
    Solaris OS: 11.4.
    Hitachi Storage: VSP E990.
    How to solve the problem?

    Thanks!





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    Nguyen Duc Loi
    Systems Engineer
    Office Equipment And Information Technology Co., Ltd
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  • 2.  RE: Disk usage different in Solaris OS and Hitachi storage

    Posted 13 days ago
    See the "About Releasing DP Pages in a DP VOL" section here:

    Creating and managing DP-VOLs - Hitachi Vantara Knowledge

    -r

    ------------------------------
    Ross Britt
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  • 3.  RE: Disk usage different in Solaris OS and Hitachi storage

    Posted 13 days ago
    See the "About Releasing Pages in DP Volumes" here:

    Creating and managing DP-VOLs - Hitachi Vantara Knowledge

    -r

    ------------------------------
    Ross Britt
    ------------------------------



  • 4.  RE: Disk usage different in Solaris OS and Hitachi storage

    Posted 13 days ago
    Hi,

    Assuming the LUN is a zfs zpool, if you have an snapshot, the storage blocks are being held by it.

    Also can you confirm if the HMO is set to 09 Solaris?

    Kind Regards,
    Owais


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    Owais Hyder
    Systems Engineer
    Synergy Computers (Pvt.) Ltd
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  • 5.  RE: Disk usage different in Solaris OS and Hitachi storage

    Posted 11 days ago
    Hi all,
    When you delete a file in Solaris, it actually is not physically deleted. So the pool does not show this as free space.
    The TRIM command is to reclaim unused space on thin-provisioned storage. It helps by actually deleting
    the free'd pages when a file is deleted.


    ------------------------------
    Nguyen Duc Loi
    Systems Engineer
    Office Equipment And Information Technology Co., Ltd
    ------------------------------