Hello, I'm trying to dig a bit deeper into https://github.com/openzfs/zfs/issues/11688 . Briefly, moving to 2.0 causes a "Permanent errors have been detected in the following files:" during a snapshot/send workload (this happened twice). I suspect I can reproduce this again by booting back into 5.10 with ZFS 2.0, but I don't want to do this recklessly. (I destroyed the snapshots before looking at them, unfortunately).
My first order of business is to try to replicate this in a VM---I want to copy my partition (which is 1 tb) to a qcow, and I'd like to get a sanity-check on my approach: zpool snapshot mypool qemu-nbd --connect=/dev/nbd0 somefile.qcow cp /dev/devforpool /dev/nbd0 zpool snapshot -d mypool and then, within the vm: zpool import --rewind-to-checkpoint mypool I feel like this should be very safe (and should work) but I'd appreciate knowing I'm not shooting myself in the foot. Also, is there a way to, given a objset/object/level/blkid, get zdb to read out the block contents? And finally, is it safe to use zdb -R on a mounted pool, or does that risk corrupting the pool? Thanks, Antonio Russo ------------------------------------------ openzfs: openzfs-developer Permalink: https://openzfs.topicbox.com/groups/developer/T757cc84fc859f776-Me48f11aec330fc643824a8bc Delivery options: https://openzfs.topicbox.com/groups/developer/subscription
