Dowgrade Kernel of OMV4

  • Hi,

    My raid 6 array won't work on kernel higher than 4.14 bpo3.
    If I try 4.19, my Raid array block:

    Jan 18 14:59:52 BigNAS kernel: [ 363.708804] INFO: task md127_raid6:270 blocked for more than 120 seconds.
    Jan 18 14:59:52 BigNAS kernel: [ 363.708873] Tainted: G U E 4.19.0-0.bpo.1-amd64 #1 Debian 4.19.12-1~bpo9+1
    Jan 18 14:59:52 BigNAS kernel: [ 363.708953] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
    Jan 18 14:59:52 BigNAS kernel: [ 363.709030] md127_raid6 D 0 270 2 0x80000000

    I try all 4.18 and 4.19 kernel and it block my Raid array
    The 4.14 kernel is no more available in OMVExtra on my OMV Gui
    Is there a way for reinstall this kernel??

  • Try apt-cache search linux-image. Pick one you like and apt-get install it. Try it and see if it works. If it does set it as the default boot kernel. There is a way to pin that version so it wont get updated. Google will show you how.

    What hardware is this?

  • Finally, I installed OMV 4 on another disk available to do my tests.Here I am in 4.14 and I find my RAID clean, accessible and error free ...I am making copies of my data then I will delete and put back a new RAID 6 under linux 4.19, which normally should settle things ... I hope.I'm just worried that my SATA card will not be properly handled by Linux updates ... I'm using this 10xSATA card (
    Thks, I follow the evolution...

  • I'm giving up...
    I tried a lot of different thing:
    . I change my SataCard with a Marvell 9215 for test
    . I have done a clean installation of OMV 4.14
    . I made all OMV and OMV-Extra updates.
    . Erase all disks and make a Raid6 Array in 4.19 bpo2. and... got the same error: mdadm blocked for more than 120sec Not tainted for 4.19 bpo2
    . I try adding GRUB_CMDLINE_LINUX="scsi_mod.use_blk_mq=0 dm_mod.use_blk_mq=0" in /etc/default/grub. Nothing change...
    . So I downgrade kernel to 4.14, pin it with apt-mark hold 4.14.0-0.bpo.3-amd64
    . The array resync work well without any freeze or error message.
    . Every disk is OK with Smart status
    . I check every Sata cableSo I can stay in 4.14 but I prefer be up to date...
    Any advice??

  • Any advice??

    Unfortunately, I don't have any good way to test this and I'm not have the issue on the systems of mine still using mdadm raid. Use the proxmox kernel is the first thing I would try. I run it on about half of my systems now.

    omv 5.5.6 usul | 64 bit | 5.4 proxmox kernel | omvextrasorg 5.3.5 plugins source code and issue tracker - github

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