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As I create new VM for web site I'm in doubt if I should use kvm64 vs host type of CPU for VM. Choose host should looks like can give me more real cpu power (but I limited by real physical cores number), while kvm64 can be set to as high as 128, and (as I can imagine) will share the same...

Great, thank you, will do! I tried RAID1 and it said I need 2 drives, never tested RAID0 as an option.

I do like ZFS and PVE approach to use native ZFS features. Now I need to set up small server with bing RAM (32 Gb) and with single big drive, but I can't install PVE 5.0 on it with ZFS. It say it needs two drives to set up ZFS. Are there any way to install PVE on single drive with ZFS using PVE...

Fabian, just a word of caution for me: if I put use exported zvols as my block devices for VM disk, then I suspect I'll see fragmentation not o my VM disk only but on zvols as well, right? I ask since I know zfs will become pretty slow over time for fragmentation rise. I use HDDs (now SSDs) as...

Thank you, now it is clear for me!

Thank you Fabian, but this is exactly the point I can't figure out. Here is the default storage.conf: dir: local path /var/lib/vz content iso,vztmpl,backup zfspool: local-zfs pool rpool/data sparse content images,rootdir If I add 'images' to the...

Looks like it should be pretty fast, beside NFS which may be pretty slow if not tuned well (hope not your case). I'd love to know how the same h/w and VM setup would work with ZFS underneath but ZFS more likely be of local attached disks, not over NFS (or over network, but with iSCSI, not NFS).

What's the underling storage for the VM disks? have you tried with zfs? I ask since zfs won't work with qcow, only raw, but snapshots etc is done by zfs itself (not that bad idea after all) and looks like this may work. zfs also promises thin provision. At your disks size (I wonder if these 5Tb...

I just installed PVE 5.0 on zfs to play with (used to use LVM before this moment), and I'm in doubt now: if I should create VM disks on zfspool pool (this will not be visible as e.g. *.raw file), or I can create VM disks as files under /var/lib/vz/images/<VM-number>/. Latter way is easier to...

Oh, I haven't told that, I tried to boot from 4.1 iso and got the same result :( The machine is Supermicro one, not Dell/HP.

I used to install various versions (since 1.8) of PVE over IPMI to number of servers and everything was fine every time I need that. But this time I need to install PVE 4.2 to some a bit outdated server over IPMI. The problem is that IPMI won't show me the some graphics mode that PVE install...

Hello, I try to figure out if it is possible to create a Proxmox (pve, not system) user that can login over web, check the state of the KVM VM (but can not change the machine's properties) and also can stop/start/reset the VM. The idea behind is that we have night shift person who's on duty to...

Quite a numbers, indeed! Just wonder what's good in 'discard' flag for virtual disk in KVM VM, should we care for when we deal with SSD underneath?

Thank you, I'll try to follow. But won't the new SSDs are already a bit over-proviosion-aware? I mean won't they are prepered to work speedy out of box and being used for 100%? Older ones were like you've said, but newer?.. I use Intel 3610 disks, they are enterprise-targeted (and a bit...

I added two SSD in my server to have speedy partition to store VM images. I've create mirror over that two SSD with mdadm, then create LVM over that mirror (so I can afford to do snapshot backup of VM). Then I've mkfs.ext4-ted over that LVM. Now I wonder: what if I set or not set 'discard'...

Even that you see above I have 64G of RAM, I really wonder why PVE won't allow to install on md mirrors from the box.

I'm afraid SATA DOM devices are often not that robust so I'd rather not to use it. Even as cache. I'm using my SSD under load only knowing I have them mirrored and have backup of VM to HDD every several hours. Kind of tradeoff between price of Intel S37xx series and hope for speed resulted from...

I do love ZFS but on FreeBSD not on Linux for that very reason of being some kind of blackbox: if it fails I don't know to fix it. But ok, let's try and discuss the setup. What I can imagine is to have part of SSD as ZIL and another part as L2ARC and another (bigger) part as drive for VMs. In...

Thanks for the opinion! I will try but as far the approach was a bit different: have VM stored on SSD and back it up to HDD. This is to have separate VM storage and backup storage. In a case of ZFS, what would you recommend: I can create ZFS mirror of HDD and another ZFS mirror of SSD. Or, I...

Hello, For years I lived with the idea that the only underling storage for PVE should be hardware-backed array of disks, which can self-heal, self-cached, and which is guaranteed to be always-in-good-shape. But now I see recent PVE versions are with ZFS out of box (but as I played with some of...