mergerfs - distribution over several disks

    • Offizieller Beitrag

    I am awfully sorry for annoying but i just want to understand it right...

    is this clearly not possible?!?! i am sure i got this working on my old omv 5

    trapexit (author of mergerfs) would have to explain how that works more. I would guess it is trying to keep "SomeFolder" together.


    I don't know why it would work on omv 5.x and not 6.x because the mergerfs is exactly the same. The plugin just puts the policy in the options. mergerfs does everything else.

    omv 7.0.5-1 sandworm | 64 bit | 6.8 proxmox kernel

    plugins :: omvextrasorg 7.0 | kvm 7.0.13 | compose 7.1.6 | k8s 7.1.0-3 | cputemp 7.0.1 | mergerfs 7.0.4


    omv-extras.org plugins source code and issue tracker - github - changelogs


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  • okay.... thank u anyway.


    thank u very much for your patience ryecoaaron

    7.0.4-2 (Sandworm) // ASRock J5040-ITX with Intel(R) Pentium(R) Silver J5040 CPU @ 2.00GHz // be quiet! ATX 500W (BN46) // 2x4GB Samsung M471A5244BB0-CRC

    Fractal Design Node 304 // 4-Port PCIE to SATA 3.0 ControllerCard // 1x 128GB SSD for OS and 2x 4TB, 1x 5TB and 3x 8TB HDD as one big fuse.mergerfs space (no need for raid parity)

  • Hello (again :) ).


    How does mergerfs Interpret "most free space" (or "least used space", etc...).


    Does it use percentage (%) or does it interprete the amount (Gigabyte for example) of the disc?


    So if I have four discs:

    1) 4000GB total

    2) 4000GB total

    3) 5000GB total

    4) 8000GB total


    **********

    how does mergerfs interpret "least used space" when all of them has a balance of 2000GB used space?


    1) 50% (2000GB) used space

    2) 50% (2000GB) used space

    3) 40% (2000GB) used space

    4) 20% (2000GB) used space


    So in this case with settings "least used space" mergerfs should write at HDD no. 4 - is this right?

    **********

    And what is the difference to "most free space" (still all 2000GB used space)

    1) 50% (2000GB) free space

    2) 50% (2000GB) free space

    3) 60% (3000GB) free space

    4) 80% (6000GB) free space


    In this case mergerfs would also choose HDD no. 4

    **********


    "least free space" will be the opposite, right?

    mergerfs would choose HDD no. 1 or 2



    So only question is PERCENTAGE or netto AMOUNT :)


    Thank U 8)

    7.0.4-2 (Sandworm) // ASRock J5040-ITX with Intel(R) Pentium(R) Silver J5040 CPU @ 2.00GHz // be quiet! ATX 500W (BN46) // 2x4GB Samsung M471A5244BB0-CRC

    Fractal Design Node 304 // 4-Port PCIE to SATA 3.0 ControllerCard // 1x 128GB SSD for OS and 2x 4TB, 1x 5TB and 3x 8TB HDD as one big fuse.mergerfs space (no need for raid parity)

  • yeah for sure... I tried to understand the

    Policy descriptions, but can't figure it out clearly...


    Only at policy

    • eppfrd (existing path, percentage free random distribution)
    • msppfrd (most shared path, percentage free random distribution)
    • pfrd (percentage free random distribution)

    there are some words about percentage...

    7.0.4-2 (Sandworm) // ASRock J5040-ITX with Intel(R) Pentium(R) Silver J5040 CPU @ 2.00GHz // be quiet! ATX 500W (BN46) // 2x4GB Samsung M471A5244BB0-CRC

    Fractal Design Node 304 // 4-Port PCIE to SATA 3.0 ControllerCard // 1x 128GB SSD for OS and 2x 4TB, 1x 5TB and 3x 8TB HDD as one big fuse.mergerfs space (no need for raid parity)

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