Hello there
I want to reduce the consumption of my server and so, to reduce access to hard drives

But I suspect mdadm to access the drives frequently and wake them up.

Because even when the drives are not mounted, they wake up frequently and I can’t find the reason.

Because the are not mounted, it’s not due to a process.

I’ve temporarily disabled smartd so it’s not that.

remains the software raid, who can potentially do regular checks, if that’s the case how to fix it?
?

ps: I know spin down/up isn’t good

  • fozid@feddit.uk
    1·
    1 day ago

    I have 2x it hdd’s in software raid with mdadm which I use as my backup storage. My server mounts the array, writes the backup, unmounts the array, spins down the disks and puts them to sleep completely automatically every night at 1am. They never wake or spin up at all during the day.

  • Taasz/Woof@lemmy.blahaj.zoneEnglish
    2·
    2 days ago

    You can try and figure out what’s accessing the array:

    Change to a directory inside your mdadm mount: cd /mnt/mountpoint/myfolder

    Then fatrace -c

    The -c limits it to the current mount point, otherwise you’ll get a ton of stuff from the root mount point.

  • Shimitar@downonthestreet.euEnglish
    2·
    2 days ago

    Never had mdadm causing that. I have a raid5 array that’s used only for backup once a day and it is mounted 24/7, and the disks are off for 23hba day more or less …

  • gnufuu@lemmy.ca
    2·
    2 days ago

    mdadm --stop /dev/mdX should at least tell you whether or not mdadm is causing the spinning.