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theonewithin

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Posts posted by theonewithin

    Slow performance?

    in General Support

    Posted

    Hello all!

    Trying to diagnose why the performance of my setup is slower than expected.

    Have 10x 8TB SAS drives connected through a SAS expander to a typical LSI 8 Channel HBA.

    Previously when using SATA based driver performance was stellar and during parity operations I could achieve well over 1.5GB/sec

    With these SAS drives I appear to be hitting some sort of bottleneck.

    Only maxing out at around 900MB/s total transfer rate.

    Each drive when tested alone can achieve over 200MB/s.


    Adding 4 drives directly to the HBA and bypassing the expander shows no change at all.

    If I do a scrub of a set of 3 SAS 15K cache drives running on the same setup the speed of this is very slow.

    Once pausing the parity check the performance shoots over 700MB/s which is the expected speed of these drives.

     

    Have run out of things to try and am now here to find help!

    I hope someone can figure out where the bottleneck of my system is.

    Thanks all!


    Have attached diagnostics.

    big-server-diagnostics-20221022-0038.zip

    Selling my license

    in General Support

    Posted

    What I would love is the ability to transfer a licence to someone else.

     

     

    But I do not expect this to be free.

     

    A fee to do it would be perfectly fine.

    Limetech get a little money that way vs nothing at all with current setup. 

     

    ZFS plugin for unRAID

    in Plugin Support

    Posted · Edited by theonewithin

    I was actually able to import the pools fine and access the data just as you would any mounted drive.

    But i made a mistake of where i mounted the pools and they now overlap and don't work...

    Have to figure out how to stop it from mounting them on startup.

    Any tips?

    Ok got that sorted actually... Just imported the pools back into TrueNAS and Unraid allowed me to import them manually.

    Got rid of all my VM's and moved to dockers so now should be nice and easy to get this to work...

     

    • Like 1

    ZFS plugin for unRAID

    in Plugin Support

    Posted · Edited by theonewithin

    Is there a way to import pools from TrueNAS 12.2?

    Plugin shows no pools.

    Would rather run my pools direct in unRAID instead of passing through my HBA into a truenas VM.

    Cheers!

    Nevermind....

    Eventually figured it out.

    Had to import manually using the pool name...

     

    Now i just wish i knew how to pass the pool mnt's through to a VM...


     

    HBA passthrough?

    in VM Engine (KVM)

    Posted

    Ok now I am having an issue of the VM "pausing"...

    Best i can tell from googling this is caused by the disk being full.

    So expanded the disk in the unraid gui and followed through with that on the vm itself.

    Still pauses...

    What the hell is the go with this???

     

    HBA passthrough?

    in VM Engine (KVM)

    Posted

    Had a read through the manuals etc but didn't find anything about this.

    I have a HBA in my server and am wanting to pass it through to a VM.

    However it doesn't show up in the pci devices.

    Is this going to just be bad luck for me that the HBA doesn't support doing this?

    Basically running a TrueNAS server and wanting to use Unraid instead but don't want to lose all my data so VM TrueNAS and then create other VM's to do everything else i want.

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