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Yes, this is why I used to run qcow2 to run linux VMs ) So to say, I wasn't able to find any numbers how big is the difference. If it is 1-3%, then no problem, if it is 10-30% then the choice is obvious. Maybe you have any calculations on that? I can only find rumors on that, and I also heard...

Recently my colleagues asked me to set up several Windows Server (they need both 2008R2 and 2019) and FreeBSD (10 and 12.1) on our Proxmox hosts. The host server is brand new server free of anything so we go with 6.2 install, and it has h/w raid with LVM and ext4 on it (yes, old-schooler, I...

Nice move, never given a try, will consider. Really good approach when no other way works! What's your experience, if there big speed overhead because of that?

I have to politely admit this is quite old software but we have to use it nevertheless. And it won't tell the difference between VM and physical host. These guys used to bind to both hardware and software, so OS version and all packages have to be intact, too. You can imagine how happy we are to...

Hello, I used to run KVM VM with some licensed software in it (there is Debian and the software run in it). When the VM was setup the CPU was set to kvm64 and never changed. The software itself used to bind its license to hardware list of the PC (that is, VM), and the problem is, if I somehow...

Yes I can see symlinks: But actually I overcome this (to be on the safe side) by adding another similiar sized disk to VM and restore files that are to be on zvol from backup, so this list includes this zvol too. What's strange is that I have 2 HDDs in mirror, but I can boot from 2nd disk...

No and yes. As we replaced board and one of hdds, server seems to run well, the mirror restore process finished well too (this was yesterday night, actually, so not long ago), so I can say "no problem so far". But last night backup job given me strange output, and I can reproduce it manually by...

No, not at all. Only sata3 ports as Intel chipset provides. This is blade server, it has no space for any hw cards and buses.

Yes, here is it: Blade server SYS-5039MC-H12TRF 2 disks Exos 7E8 4TB 512e SATA 1 disk Samsung m.2 970 Pro Xeon E-2288-G 64 GB of RAM (onboard IPMI) Can check motherboard devices but nothing custom. m.2 disk used as separate disk (zfs pool), not as cache for mirror made of HDDs.

I'd wish to believe it is me who's no luck but I know other clients are happy with the same disks. I doubt hoster will collect bad-looking disks only to supply it to my server :) ZFS did its best to predict problems and it warns me each time. First that there are some errors in checksums on one...

And yes the server have no hw raid so all I can do is to resetup it as md mirror but I'd like to try zfs replicate feature to send VM state to another server. We planned to rent several such blades (the same config), so zfs replicate can be good to try and use, but as we stick with this issue...

Bad batch (maybe) was the reason they replaced disks that many times so easily (they are nice, really), but they told me many other clients use the same disks from the same batch without any problems. That also tried to install disks of the same series but from different batch to overcome that...

Hello, I rented a blade server with two 3.5" 4 Tb SATA disks, added both as ZFS mirror. No problem was seen initially, but soon I got one of drives failed (physically), so hosting company replaced it promptly and I have pool resilvered. After 3 days second disk died physically, and again I have...

It as a bit unusual to configure such a host but I did the server setup (ZFS is used to be self-minded somewhat like "ok, I know how to do that, don't mind" and it just works - not to mention that is should be tuned for load). It you permit I'd ask the question for idea I heard one day: is I...

:) I suspect ZFS over SSD (or SSD under ZFS) will be much slower that SSD itself. Even that SSD is NVME one. You see, ordinary way to use SSD for me will be create LVM, create a partionion over it, format is as (ok, let's give a try, instead of ext4) xfs, then mount it in PVE, and add this...

Thank you very much. This was a point I missed (and it was quite a problem for me to consider ZFS. I've heard a lot of times that while ZFS stores disks as raw it is more efficient due to it has native snapshot/compression support. I would one day check if deduplication is that great thing when...

Funny thing is that I prefer to keep VM's data in .qcow2 files, not in LVM-thin or (not tried yet) ZFS. The reason is simple and it more important that extra layers for data: I can easily copy over these files, even to different host server, even to external HDD, and it'll still be "file", not...

Thank you for your recommendations! You see, I'd prefer MD as it is possible to recover it easily (while ZFS recover is hard to understand thing if something go wrong). Sadly, PVE setup won't handle MD mirror out of box, so need to set it up manually (or set up Debian and put PVE as package)...

I only say PVE won't migrated to XFS so far (and not appears to do so), and they do aware of any FS "goodness" I suspect. Ok, anyway you vote for MD not ZFS?

XFS even that Debian tends to use ext3/4?