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  • 6.12.4 - data loss and unraid crash while moving data on zfs drive within same dataset/folder

    • Closed

    I 1st observed this while moving some data around on one of my disks.
    - 4 disk array (1x parity, 3x data).

    I observe this behaviour on the drive with zfs file system.

    Running the following command I moved multiple copies of a Windows10.iso file one folder up.


    I can see that RAM is filling up:


    Unraid GUI only shows read activity on the disk3 and NO writes.

    Unitl I get this:

    The moved files are lost!
    3 out of 5 files were moved and nothing can be found in the target folder.

    And Unraid UI is crashing due to lack of free RAM.

    Any ideas?
    I know that zfs is using RAM to buffer file transfer, but this does not make any sense.

    I lost an unknown number of files due to this issue...
    Luckily, I just moved between servers and the old one still holds a copy ....

    User Feedback

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    The command that was used moved the files to / which is the root of the file system and which is in RAM.    That would fill up the RAM and eventually crash the server, and on reboot the files would be gone.

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  • Status Definitions


    Open = Under consideration.


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    Solved version = The issue has been resolved in the indicated release version.


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