ZFS on OMV

1st Official Post

    I was using OMV from version 6 to 7 with ZFS and Windows VSS, and everything worked fine—until one day, VSS suddenly stopped working. When trying to access Previous Versions from Windows, OMV would hang completely, except for the web GUI. SMB shares and SSH would become unresponsive, and I had to power off OMV repeatedly just to troubleshoot.


    So, my suggestion: if you plan to use ZFS, you might want to avoid OMV. I also hope that one day ZFS will be supported as a native file system in OMV, rather than just through a plugin.

    use BTRFS instead.

    • Official Post
    Quote from charles.yang

    if you plan to use ZFS, you might want to avoid OMV. I also hope that one day ZFS will be supported as a native file system in OMV, rather than just through a plugin.

    It would make no difference if zfs was native to OMV. That is the whole point of a plugin - to integrate into the web interface natively.


    I know the zfs plugin has issues. Partly my fault because I don't know zfs extremely well and don't use it. But the shortcomings of the plugin are just lack of features not anything that causes data loss or definitely not hardware issues. The way the plugin is designed, there is no reason you can't do setup of the missing features from the command line and then just consume the filesystem from OMV.


    If people want the zfs plugin to get better, they will have to contribute.

    omv 8.2.7-1 synchrony | 6.17 proxmox kernel

    plugins :: omvextrasorg 8.0.2 | kvm 8.2.4 | compose 8.1.13 | cterm 8.0 | borgbackup 8.1.9 | tempmon 8.0.3 | mergerfs 8.0.1 | scripts 8.0.3 | writecache 8.1.10


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


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    Like 1

    charles.yang I have to agree with ness1602 and suspect you have a zfs configuration problem.


    Looking back at your previous posts you described how you setup autosnap and enabled "shadow copies" in SAMBA shares for Windows clients. I don't believe this is same thing as "Windows VSS". I wonder if your saw the last entry on that old thread which gave the syntax for getting it to work with hourly, daily, weekly, monthly.


    Without out more details of your hardware/OMV config no one can offer any meaningful advice, just as your own general comment re: zfs plugin in OMV is to vague to be helpful to others who continue to use successfully.

    Absolutely not a ZFS configuration problem — I had been using ZFS for three years without issues until I updated the ZFS plugin.

    I discovered that OMV was scheduled to enter sleep mode when there was no access. I believe that could be the reason, as going to sleep might break the ZFS snapshots. It's my bad, I set it up and forgot to disable the sleep schedule after building zfs pool.

    However, no alerts or error messages were received from the ZFS plugin, and OMV hung when accessing the snapshots.

    • Official Post
    Quote from charles.yang

    without issues until I updated the ZFS plugin.

    Updating the zfs plugin could potentially change zfs-zed config but I doubt it. That should only affect notification emails at worst.

    Quote from charles.yang

    OMV hung when accessing the snapshots.

    Not sure what that means. Did the OMV system hang or the browser or the snapshots tab? How many snapshots do you have?

    omv 8.2.7-1 synchrony | 6.17 proxmox kernel

    plugins :: omvextrasorg 8.0.2 | kvm 8.2.4 | compose 8.1.13 | cterm 8.0 | borgbackup 8.1.9 | tempmon 8.0.3 | mergerfs 8.0.1 | scripts 8.0.3 | writecache 8.1.10


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


    Please try ctrl-shift-R and read this before posting a question.

    Please put your OMV system details in your signature.
    Please don't PM for support... Too many PMs!

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