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Log device is needed to check missing data on pool import action. If your Log device is crashed you can import pool manually by force .

The error you think you hitted is more related to Linux kernel 3.x and may be older versions. Do this test # rm -rf SRC; mkdir SRC; for i in $(seq 1 10000); do echo $i > SRC/$i ; done; find SRC | wc -l #for i in $(seq 1 10); do cp -r SRC DST$i; find DST$i | wc -l; done

Let him try it.

# zpool attach Example: 1. Lets create stripe pool # zpool create test /zfs_test/file1 /zfs_test/file2 # zpool status test pool: test state: ONLINE scan: none requested config: NAME STATE READ WRITE CKSUM test ONLINE 0 0 0...

Try to create Ceph mannualy on zvol.

But RAID10 is possible to 'upgrade'

You must do what you must just you need to adjust your needs with Proxmox

Set mountpoint. PROXMOX do not look at current mountpoint of ZFS volume. It have static build in settings. example: if you want to use pool zfs_pool/vm_volume it must be mountpoint to /zfs_pool/vm_volume/ not like /my_vm_directory/

As bad I/O your Raidz2 is bad. Look at the picture for allocation overhead. You are running out of space insive VM (KVM?) or in host ?

First can you print results of # zpool status

From ZFS striped you can convert to ZFS striped/mirror like RAID10 You need only attach disks to existing disks. BTW. Google about RAID controllers and ZFS for bad work

News about bugs # ./spectre-meltdown-checker.sh Spectre and Meltdown mitigation detection tool v0.37+ Checking for vulnerabilities on current system Kernel is Linux 4.15.17-1-pve #1 SMP PVE 4.15.17-9 (Wed, 9 May 2018 13:31:43 +0200) x86_64 CPU is Intel(R) Xeon(R) CPU E5-2603 v3 @ 1.60GHz...

You have to share host catalog. Set full path like /lxc/110/mnt/Test777

Share storage using 9p https://forum.proxmox.com/threads/virtfs-virtio-9p-plans-to-incorporate.35315/#post-184993

I dont use NFS but I found old line in /etc/exports /media/zfs_pool/cloud/mk 10.10.10.16(rw,sync,no_subtree_check)

Set sharenfs off on ZFS and add it to the /etc/exports

Edit /etc/exports file and reload NFS service #exportfs -a

If you want to configure SAMBA use google. IF your two LXC containers are in the same server you can try folder share https://pve.proxmox.com/wiki/Linux_Container#_bind_mount_points

I guess ZFS NFS and SAMBA export is broken. Try to edit manually and export.

Looking to your ZFS status I can suggest you to make a scrub after resilvering will be done.