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Retired_Member's avatar
Retired_Member
Jun 06, 2017
Solved

Snapshots ReadyNas 316

Hello,
I have a problem, yesterday deleted all my snapshots.
The volume displayed =>
data 20.31 TB
Snapshots: 0 TB
Free: 8.30 TB

I started balancing and defragmenting.

 

This morning I reconnect and the interface displays =>
data 18.62 TB
Snapshots: 2.16 TB
Free: 8.30 TB

 

There is now 1 snapshot in each of my 6 volumes.
I have no files modified since yesterday, why this snapshot space used?

  • Retired_Member's avatar
    Retired_Member
    Feb 02, 2018

    I try btrfs balance start -dusage=100 /data

    And try disable and enable quota.

    It's ok now !!!

    I think quota it's the solution for my problem !!

    Thanks everyone

31 Replies

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  • StephenB's avatar
    StephenB
    Guru - Experienced User


    There is little change in your volume size.  What's happened is that some space that was in your main shares has shifted to the snapshot.

     

    This could be because of the defrag.  

     

    Another possibility is that you enabled quotas yestderday.  Did you do that?

    • Retired_Member's avatar
      Retired_Member

      Why has space not moved into free space?


      No I have not enabled the quotas.

       

      I thought the complete removal of snapshots will free space.

      • StephenB's avatar
        StephenB
        Guru - Experienced User

        Retired_Member wrote:

        Why has space not moved into free space?

         


        Why would you expect that?  

         

        If I understand your post right, you were using 20.31 TB of data after you deleted the snapshots.  Then after the defrag you were using 18.62+2.16 (or 20.78 total).

         

        Am I misunderstanding?

         

        Try deleting the snapshots again.  Then run a balance. 

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