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Dear all, after update lxc-pve with apt-get distr upgrade it works!

Dear all, I have read the wiki After that I have setup pve 4.4 and do the following: root@dab:~/ubuntu# cat dab.conf Suite: trusty CacheDir: ../cache #Source: http://archive.ubuntu.com/ubuntu SUITE main restricted universe multiverse #Source: http://archive.ubuntu.com/ubuntu SUITE-updates...

I have used zfs, it still has many bug. It still uses a separate ARC cache on linux and so on. lvm can reduce/extend too. lvm has a lvmcache. lvm doesn't use a lot of ram.

Just don't use ZFS. ZFS is still a technical preview. You need high RAM, and you can have a lot of problem with zfs.

It is so easy, but with downtime. I have a mistake in my mind, so, correct size, step by step: shutdown a CT. edit /etc/pve/lxc/xxx.conf - with a new correct size. Backup CT by gui Delete CT Restore CT from backup. Profit! before: root@pve-mtce01:~# lvs .... vm-5001-disk-1 pve Vwi-a-tz--...

You need a more RAM for ARC in this case. There is no other moment with it. 8k - is good size for zvol too. And I don't use zfs on linux anymore, bacause it has some bugs (my VMs hangs in during heavy disk i/o). I use lvmcache now.

yes, but you still have problem with an effectivity of ARC.

I think it is a bad idea! It will kill your performance and effectivity of your ARC!

I can't to do it now, but in the future - may be. I think there is no need to test it. Because a maintainer of zfs tell about wrong of 8k zvol for ARC!!! Can I tune it?

Dear all, I think it is a very bad idea, to create zvol with 8k volblocksize. Can I change a default block size of zvol when created a vm from web gui? I want to change it from 8k to 128k. If you want to see a more about problem, you can go to: https://github.com/zfsonlinux/zfs/issues/824

I don't have many slots in my server, so I have devied SSD: mdadm+LVM is just for OS only and other space on my SSD for ZiL+L2ARC. Do you know about best block size for zvol? And what about default blocksize zvol when I create a vm by proxmox gui?

So, DEAR ALL! THANK a lot for your answer to me! I have a lot of google about it. And I can say my final opinion about that question: So, zfs in proxmox doesn't have any preconfigured settings yet. You need to know what about you doing! The first is about ZiL: ZiL must in a mirror partition...

Don't use directory storage if you want to have a good performance

Dear jdrews, please note, that ARC/L2ARC - are ADAPTIVE cache. So, I think you can't get the speed about SSD from your magnetic drives! For ZiL (in general) will be enought 3GB part. ZiL is use ONLY for event of power cut situation. Zfs will move from ARC to L2ARC WHEN ARC is FULL, e.g. I think...

You can see: I have doubt about it. I want to ask about this from a maintainer of proxmox. Proxmox distro has no tuned about zfs arc size. Why? I have two variant about it: The first is: that is a normal and maintainers of proxmox know about that is good. The second: maintainers of proxmox...

Dear all! I have to plan use a local zfs pool as a my production local_storage. So, I have configure log + cache on a SSD drive. It works very very fast and stable. What about configure ARC size? I have 48GB of RAM From the default setting ARC is: from 32M to 24GB. I want to run about 35 GB...

Can you give me configs your VMs?

I have USB-dongles too, it works fine. USB2Serial - doesn't works - it is FTDI vendor device - It looks as a new device, the drivers install fine, but COM virtual adapter does not able to recive or send any data. Please tell me, how do some test performance? Esxi out of the box give me...

I think problems with USB, COM - is global problem for qemu. For example: I need COM port for "Keri Systems", it doesn't work. I need USB port for get "status electrical conut", It uses USB. - It create a virtual COM port. - It doesn't works. I'm sorry for OFFTOP, but I tnink it is a...

Hi! I had compared KVM software vs VMvare ESXi. I cry... KVM is weak software. For example: USB? - I didn't test ESXi, but KVM/qemu works bad with my old device. I cry, cry, cry... I like OpenSource. Developers of KVM know about Win98 and so on... If you have some...