RolandK's latest activity

  • RolandK
    RolandK replied to the thread MDRAID & O_DIRECT.
    >afaik, i/o errors typically happen on read, not on write. addon note for this: https://www.enterprisestorageforum.com/hardware/drive-reliability-studies/ "The authors found that final read errors (read errors after multiple retries) are about...
  • RolandK
    RolandK replied to the thread MDRAID & O_DIRECT.
    yes, you are right, chances ar low, but i'm not not sure if we should really call it "over engineered" to check boot env for disk issues and to have "zfs|btrfs scrub" equivalent for bootenv. for all those who worry, here are some ideas how check...
  • RolandK
    RolandK replied to the thread MDRAID & O_DIRECT.
    yes, but while zfs is getting regular scrub, silent bitrot could indeed happen on partition1+2 on system which is rarely getting touched/updated. such issue will hit you when you don't expect it. chances are low indeed, but the sectors of...
  • RolandK
    RolandK reacted to t.lamprecht's post in the thread MDRAID & O_DIRECT with Like Like.
    We explicitly mirror the UEFI partitions outside of ZFS though. And not noticing with many months of uptime means one did not apply any updates for the same period of time, as else IO errors on setting up a new kernel there would get noticed, and...
  • RolandK
    RolandK replied to the thread MDRAID & O_DIRECT.
    good and valid point. would you like to open a bugticket for this @emunt6 ?
  • RolandK
    RolandK replied to the thread MDRAID & O_DIRECT.
    this is also affected. https://bugzilla.kernel.org/show_bug.cgi?id=99171#c24
  • RolandK
    RolandK replied to the thread New Windows VM Startup Recovery.
    it seems newly created qcow2 on lvm do not initialize the storage with zero but assume the storage is all zero. so you provide the same data to the qcow2 on re-adding which was there before. try deleting the windows vm and before recreating...
  • RolandK
    clearing nvram via setting jumper on mainboard also solved this problem for me on dell r620