Performance and stability issues Openmediavault
(09-24-2018, 09:26 PM)jgpacc Wrote: I have been running a OMV on a HC1, XU4 and now Rock64.  I decided to do performance comparisons.  This then exposed my instability issue with Rock64.  The HC1 gave 110 MB/s write speed.  The XU4 only did 70 MB/s.  The Rock64 might be the star I thought but it only did about 80 MB/s before it crashed.  This now is the problem.

I try coping about 10 GBs from W10 to the Rock64 via ethernet and it fails every time at around 6 GBs. The box crashes and must be power cycled.  There is no message in the OMV log.  Smaller copies work and if I connect my USB 3.0 attached HDD to the USB 2 port the copy works but at 30 MB/s.

I have tried a HDD, a SSD and a M.2 SSD in a M.2 to USB enclosure. All 3 fail approximately the same. Makes me think the load is crashing something.  
One error in the log I see occasionally is something like  Fatal  Watchdog not found.  
I am running OMV 4.1.11  Linux version 4.4.132 on the eMMC.  I have the correct power supply.

Anyone have any ideas on this problems?  What other testing could I do to trap some meaningful error messages? 

Im using ATM OMV on rock64 installed from an image downloaded from here and its working fine, no matter what file size, if all disks you use are connected with the same enclosure then maybe there are compatibility issues, i cant find the post from tkaiser on the armbian forum where he analized external hdd enclosure/adapter chipsets but basically a lot of those where unstable to say the least and its not a rock64 or omv fault, on most cases he solve the problems by disabling UAS wich in fact is disabled by default on the build from the link i posted for allmost all adapters exept the ones they know that work...

Also for most SBC OMV builds they have a plugin enabled by default (openmediavault-flashmemory) that basically dont write logs on disk, only on memory, its kinda hard to analyze if the device crash completelly, i never tried it but disabling that addon you can maybe get actual disk logs that can help after a major crash...(i never try it, do your googling)

TLDR: try disabling UAS on the disk, check if there is no temperature problem, both on the rock64 and the hdd enclosure/adapter, disable the flashmemory plugin for proper logs

Messages In This Thread
RE: Performance and stability issues Openmediavault - by Trash_Can_Man - 09-25-2018, 07:29 AM

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