mdadm

May 22, 2016
596
19
18
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Sure, but PVE is based on zfs on linux......

So, saying that ZFS is much more secure than mdadm just because it has bitrot protection, is false.
Between two scrubs, you can loose data.

This doesn't happen with hw raid or mdadm because both trigger a rewrite in case of unreadable sector
 

feldi

New Member
Oct 26, 2010
6
0
1
We don't use anymore hardware raid because of a lot of firmware issues.
On other installation (no proxmox) we are using mdadm
Because of this discussion we are trying to use zfs with proxmox.

After a hour load test on proxmox V5.4.3 we got this error:
May 12 11:17:24 serv1020 kernel: [419044.195091] INFO: task zvol:2398 blocked for more than 120 seconds.
May 12 11:17:24 serv1020 kernel: [419044.195125] Tainted: P O 4.15.18-12-pve #1
May 12 11:17:24 serv1020 kernel: [419044.195142] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
May 12 11:17:24 serv1020 kernel: [419044.195164] zvol D 0 2398 2 0x80000000
......
And the zfs is dead.

Sorry to say that, but zfs is not ready for production use....
 

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