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Unfortunately I installed proxmox on the same pool so that will have to wait for a full reinstall. Normally I install on a raid 1 mdadm disk, but on this server I decided to give the full zfs install a go. Live and learn. Based on the numbers you were showing and other research I expected the...

First of all Dunuin, thank you very much for the pointers. I greatly appreciate the help. I just wanted to report back and state that I tested this on a Win10 Pro virtual machine, then I did this on Server 2012R2 (two Vm's) 1. Add a scsi1 disk to windows (to make sure the driver was there)...

That's interesting. It looks like I'll be rebuilding the machine during a maintenance window. :-/ It looks like had I set atime=0 instead of 12, everything might have been aligned properly (from what I've read today atime=0 lets linux autodetect the correct volblocksize), but I don't know how...

I'm confused here. I can see the option to enable discard (and I guess I should do that), but virtio disks are recommended everywhere I look for windows performance. I'm not seeing anything suggesting that windows virtio drivers don't suppport this, but perhaps I'm reading the wrong things. Do...

raidz2 zpool status pool: rpool state: ONLINE status: Some supported features are not enabled on the pool. The pool can still be used, but some features are unavailable. action: Enable all features using 'zpool upgrade'. Once this is done, the pool may no longer be...

bah, wrong setting. it is 8k: zfs get volblocksize NAME PROPERTY VALUE SOURCE rpool volblocksize - - rpool/ROOT volblocksize - - rpool/ROOT/pve-1 volblocksize -...

zfs get recordsize NAME PROPERTY VALUE SOURCE rpool recordsize 128K default rpool/ROOT recordsize 128K default rpool/ROOT/pve-1 recordsize 128K default rpool/data...

I'm seeing some odd things happen on a VM. I've been doing auto snapshots with cv4pve-autosnap, then copying the data across to another location using pve-zsync. The VM running is using rpool/data/vm-100-disk0; however cv4pve-autosnap is taking snapshots on a disk that seems to be from a...

So there's no way to do it with proxmox or something like cv4pve-autosnap so it shows up in the GUI for easy rollbacks? I can obviously do something like 'zfs snapshot rpool/foo' but it's less desireable. Thanks!

If I have a linux LXC container installed on ZFS, with some bindmounts manually added to the configuration (also zfs, but a different dataset on the same pool), I cannot take zfs snapshots any more. Is there a way around this? I don't care about snapshotting the datasets. I'm doing that...

This basically worked a treat! Thank you. pve-zsync sync --source 110 --dest 192.168.1.22:rpool/data --verbose --name win10test After this went across on the original proxmox machine (windows 10 guest) I edited a text file on the desktop. Then I re-ran the above command and started up the VM...

So pve-zsync doesn't require a cluster? I must have misread something somewhere, because I thought that it did. Thanks! James

Hi, I have a temporary server configured running a couple of windows server VMs on ZFS. I've rebuilt the main server, and I'm wondering if it is possible to do a migration of the VM's with ZFS without doing a cluster. Ideally, I'd like to do an initial sync to get the majority of the data, and...

MSSQL is part of an application suite that requires windows. No choice in the matter.

The CPU isn't the fastest. The assumption on my part was that this might bottleneck performance. It's worth testing again with it enabled. Meh, I already have a license for passmark. It's easy to use on windows, gives pretty graphs, etc. Didn't know that FIO was available for windows. Thanks...

As an added test, I ran passmark advanced disk testing with some custom threads based on their database testing config. 4 Threads, Each is a 500K file size, with block size of 64K. The rest of the settings I left the same. I'm not sure that this is a particularly valid test though. Average...

I've decided to go forward and test. In general I've noticed that read speeds are quite good, but some writes (4k especially) can be sub par. I've used passmark to test the drives, and as a baseline, I'm comparing that to my desktop with an NVMe. Attached is a PDF that shows the results from...

Hi, I'm looking to install Windows Server 2019 Std with MSSQL Sql Server Express (probably 2017). Drives: Raid10 SSD 1TB drives (samsung 850 Pro MZ-76P1T0BW) Historically I've used raw filesystems for mssql as suggested. I'd really like to have the ability to use snapshots. Can this...

Had this come up again, and found a better solution. If you open the disk management tool in windows server (instead of the server manager) you can create new volumes.

I found the answer. I hope this helps somebody... virtio1 (bak:101/vm-101-disk2.qcow2,size=500G) Was the first drive I added after the C:\ Drive. I did this on both machines. In order to get those to read, I had to upgrade the virtio drivers from stable to latest. These virtual disks are...