Maybe it has something to do with the RAID controller of the HP microserver, even if we use the drives as SATA AHCI ones. I never had this problem with other server hardware (e.g. Supermicro with no RAID controller) so far.
pveversion -v
=> 4.x, cannot check at the moment since I booted the Proxmox Debug Console
zpool layout
=> 2 drives as ZFS mirror
disks as seen by grub ('ls', and 'ls (hdX,gptY)' for all X and Y)
except for (hd0,gpt2) and (hd1,gpt2) "unknow filesystem"
boot with (hd0,gpt2) => checksum...
BTW, that was the second Proxmox server within 1 week. Same problem with the same hardware which is HP Microserver Gen8 with Xeon CPU and 16 GB RAM. Both drives are connected as SATA AHCI devices.
I am having the same experience. Booting a server after quite a while and the system is not starting up with the error messages "no such device" and "unknown filesystem". The "ls" command gives the output "unknow filesystem". Proxmox version is 4.4 and I did not update the packages before...
Hey guys,
we experienced an awkward problem where running VM files suddenly disappears from a QNAP NFS share.
This happened now twice, first time end of February with 2 less important VM’s and now 3,5 months later with one productive VM. They are on the same node. There are around 20 VM’s...
Hey Tim,
thanks for your opinion, I will consider it for next small Proxmox setups without hardware RAID.
Sadly there's no MDADM option with Proxmox guided installation and I wanted a "clean" installation.
The zfs_arc_max parameter seems to stabilize the systems. Big thanks to you iffi so far!
Thanks guys for your answers!
No, dedup is "off".
rpool dedup off default
rpool/ROOT dedup off default
rpool/ROOT/pve-1 dedup off default
rpool/swap dedup...
How to check if dedup is running correct? Yeah could be that the servers with more VM's and more RAM usage of the VM's rebooting more often, especially seen after backup tasks.
So are there settings for zfs you are using for more stability? Any advice of how much RAM in percent should max be...
Hey adamb,
it's different, cause we've got this setup for different customers with different amount of VM's and systems.
From one VM with 4GB RAM (Windows) to 3 Linux VM's with total 7GB RAM to 6 Linux VM's with a total amount of 11GB RAM.
Hey guys,
since the first Proxmox 4 release we've got problems with reboots, especially during nightly backup jobs and high load. Most of the used servers are the HP Microserver Gen8 version with Xeon E3-1220L v2, 16 GB RAM, 2x4TB HDD’s with ZFS Raid and newest available BIOS. These issues...
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