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How ?

This ZFS layout was the result of Proxmox installation. I don't remember an option in Proxmox installation to do what you are telling me, could you please elaborate more on your suggestion ?

This is ST2000DM008 (I'm using 4 of them in a RAID10 configuration) datasheet and product manual I'm using this HDD because datasheet said this HDD have 4096 bytes per sector and 220MB/s Max. Sustained Transfer Rate OD. Motherboard is an ASUS P6T CPU is Intel(R) Core(TM) i7 CPU 950 @ 3.07GHz 6...

Will do, what exactly should I look for ?

@LnxBil thanks for helping out, here is the output # zpool list NAME SIZE ALLOC FREE EXPANDSZ FRAG CAP DEDUP HEALTH ALTROOT rpool 3,62T 1,73T 1,90T - 16% 47% 1.00x ONLINE - # zpool status -v pool: rpool state: ONLINE scan: scrub repaired 0B in...

When you use SMB, NFS, or any other network/protocol, your cache memory free -hw starts to grow up, at some point is going to compete with ARC cache, which will eventually cause your a drop. You can fix this with ... # Insert this line in /etc/modprobe.d/zfs.conf options zfs...

So what might be causing a low peformance issue? Wherever I made a big copy (50 GB or more) the copy speed drops suddenly, and after a while it goes back again, this repeats over and over. And also some of my KVM servers start to have low peformance too. Could you help me ?

Are you making backups remotely (Using NFS, SMB, etc)

# fdisk -l Disk /dev/sda: 1,8 TiB, 2000398934016 bytes, 3907029168 sectors Units: sectors of 1 * 512 = 512 bytes Sector size (logical/physical): 512 bytes / 4096 bytes I/O size (minimum/optimal): 4096 bytes / 4096 bytes Disklabel type: gpt Disk identifier: 6CE03003-5475-4CFC-8ED1-8DBC1DEBB92E...

According to that link: I'm seeing here: That my partitions are not aligned to a 4K boundary. Before this setup, I used to have 4 Seagate ST1000DM003 on ZFS with ashift=9, and I had better peformance (Less I/O delay percent). Am I missing something here?

Thanks for helping Then why this Units: sectors of 1 * 512 = 512 byte line is telling that each sector has a size of 512 bytes? What does that means ?

I bought 4 Seagate Barracuda ST2000DM008 (Bytes per sector: 4096 according to datasheet) to be used in a Proxmox 5.4 with ZFS, during installation I choosed ashift=12, however after installation, I decided to check the bytes per sector using: fdisk -l /dev/sd[abcd] This gives me: Disk /dev/sda...

Thanks for helping out, @Dominic .How about this one: pvesh get /nodes/asgard/qemu/1080/agent/file-read --file /path/to/file I'm getting the following error: Agent error: The command guest-file-open has been disabled for this instance I'm logged as root

I want to execute several commands to each one of my nodes, looking at Proxmox API is possible to send commands to a node using: pvesh create /nodes/{node}/execute --commands '["apt update", "apt upgrade pkg1, pkg2, pkg3"]' However I can't seem to find a proper way to create the JSON. Can...

@dietmar and @wbumiller thanks for the answer, one last thing, does Proxmox has a proven hardware list of some kind for servers?

That's a shame, I really like the idea of having ARM CPU servers with Proxmox, as they are cheaper and consume less power, for small business with low workloads, this is something to worth having. Anyway, I would like this info you gave to be confirmed by Proxmox itself.

Can Proxmox VE be installed on ARM server? If so, those anyone has done it yet? And finally, I'm currently working in a small factory (less than 100 users), we want to setup a High Aviability Cluster with 3 nodes, since our workload per user is not high, we thought of using ARM servers, is this...

Following this guide I created a KVM by using this: qm importovf 999 Win2003.ovf local-lvm I want to access the system disk to use chntpw to see the windows registry, see if which of this registry branch exists: [HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\] OR...

I finally solved the problem, I was using writeback as KVM HDD cache. According to this guide, when you use this type of cache: This mode causes qemu-kvm to interact with the disk image file or block device with neither O_DSYNC nor O_DIRECT semantics, so the host page cache is used and writes...

Another update