1. C

    ZFS scrub too fast and impacting VM's

    Hi all, We have a storage cluster running with NVME drives using ZFS to have a RaidZ2 pool. The pool is 84TB and while it is nice to see 84TB scrubbing finished in 39 minutes while reaching speeds up to 2.1GB p/sec, i would like to slow it down a bit or at least doing something to not let VM's...
  2. Toxik

    PBS verfication vs. zfs scrub

    Hi, PBS documentation about backup verification says: IMHO it would be a better idea to do a "zfs scrub" on the data store on a regular basis instead of re-verification of backups, wouldn't it? ZFS has everything included to save your data (and even fix it again, when on a redundant array)...
  3. S

    Solved my ZFS scrub problems.

    it seems that a "new" sequential scrub algorithm for ZFS is causing head aches on some of our Nested systems. The "new" metadata scan reads through the structure of the pool and gathers an in-memory queue of I/Os, sorted by size and offset on disk. The issuing phase will then issue the scrub...
  4. C

    [SOLVED] Is ZFS scrub required/needed in a VM if the host already does scrubbing?

    Hi all, This one has been on the back of my mind for a while. So we have our hosts with ZFS RAID10 arrays which do their scheduled ZFS scrub every month. On top of those arrays we have FreeBSD VMs using ZFS again, however the scrubbing schedule there is disabled. Is there any benefit from...
  5. F

    [SOLVED] ZFS pool data loss after power outage

    I'm still fairly new to running a proxmox server and just hit a major issue. Recently my proxmox server suffered a sudden power loss and when it came back online, all data in a directory was lost. Strangely, not all directories were affected because my VMs and containers were unaffected and...
  6. R

    [SOLVED] ZFS scrub_start event for rpool?

    Hi, I've configured mail notifications via ZFS Event Daemon / ZED and mail notifications for "ZFS scrub_finish event for rpool ..." work just fine. I would like to receive mails when ZFS starts scrubbing as well. How can I set this? Thank you for Proxmox!
  7. E

    zpool errors: Permanent errors have been detected in the following files:

    Hi Everybody. I have been using proxmox for about 3 years. I have about 40 proxmox dedicated servers I've created about 400 virtual servers in these 40 servers and i had no problems. I started to see errors in some of the proxmox servers last week ZFS mirror 1 two SSD Disk. and i tried...
  8. G

    [SOLVED] zfs/zed.d not sending email

    I have decided to automate the scrubbing of my pool with the advice provided by @tom from this post ZFS Health and because it is no good scrubbing if you aren't notified of a problem looked in the suggestion at the end of that post about using /etc/zfs/zed.d/zed.rc. Information about this ZFS...


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