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it depends heavily on the Windows Version, any version before Server 2012 or 8 does not support the scsi Unmap command Also it does not clean up immediately, you should also look for this: fsutil behavior query disabledeletenotify If the parameter is set to "1" trim/unmap is disabled and...

if you move with P2V the empty blocks are copied over too. You should probably set "discard" in the disk definition, so you can regain the zero blocks. But be aware: this works only with Windows 10 or 2012 up Windows 7/2008R2 only support discard with ATA not with SCSI

Do not run CEPH with just 1 node it is not and was never intended for such a use. CEPH needs at least 3 Nodes with OSD's. No exception

if you want to extend a RaidZ2, you have to extend it by a same size VDEV. So with 4 * 1TByte RaidZ2 you have to add again a VDEV with 4 * TByte. But: Z2 means 2 drives for redundancy. From a capacity point of view it is not better than 2 Mirror VDEV's Z2 makes sense for high capacity with at...

it is supported very fine. the management is simple. I run 4 Clusters each with CEPH As you are versed in CEPH you should know what to do to get it running fast. Just keep off the fingers from rotating disks and use a fast backend network >= 10 GBit/sec

I do not understand why you want a separate Journal for a full flash deployment. if your journal SSD fails you loose immediately all 6 OSD's depending on it. Also the write load on the journal will be 6 times the OSD's compare: 0.8 DWPD to 3 DWDP -> so if you are really hitting the DWDP Limit...

Sorry, just hit the post button to early, now here the relevant information: Write Configuration When Not Quorate If you need to change /etc/pve/corosync.conf on an node with no quorum, and you know what you do, use: pvecm expected 1 This sets the expected vote count to 1 and makes the cluster...

Look here: https://pve.proxmox.com/wiki/Cluster_Manager the relevant part for you: https://pve.proxmox.com/wiki/Cluster_Manager

Very curious, we have many disks of different types and vendors running with ZFS since years (RaidZ2 and Mirror). Of course we see disks passing away, but with normally expected rates ( usually < 1 per month out of around 500 disks ). So I bet your hoster has just no luck with these disks.

Hi I do have the same problem. i have to edit /usr/share/perl5/PVE/Storage/CIFSPlugin.pm Making the timeout, or configurable would be a greate plea !

It depends heavily on the switch you use. With an dumb switch there is just Active/passive possible (anything else will not work reliable). you need a managed switch on which you can setup LACG groups (or you can setup a full mesh with direct connections, openvswitch can do that) _but_ don't...

Hi, you mention 16 G ARC size, did you limit it in a conf file in /etc/modprobe.d (and rebuild the initram) so it get set again after reboot? And for the disks: you setup a 4 way mirror, was this intentional?

The samba Server is running on a different dedicated hardware ( it is running there in a container for some reasons, but the whole hardware is dedicated for storage) guest user is definitly no solution for security reasons, but I will look into password caching

Hi, we use CIFS Protocol for Backup, but the check if the Storage is online produces high load on our Samba file servers. The samba fileserver is bound to our Active Directory, in the log you can see, that the online checker tries an login every 10 seconds: [2019/01/28 13:46:13.847175, 2]...

you need always a quorum of > 50 %, otherwise you can run into split brain situations (you really do not want that!) so expected vote is n/2+1 so: 3 Nodes -> Expected Vote = 2 4 Nodes -> Expected Vote = 3 5 Nodes -> Expected Vote = 3 (and so on) So only in a cluster with at...

Look in the Bios for AMD-V. Iommu is only necessary if you want to give VM's Access to PCIe Cards. But it doesn't harm.

restart networking with the old ifup tools did never work as expected with bridges. If you manually stop the bridge and then start networking again it possibly works, but to be sure reboot the server

This is the correct place to change. Did you put the cable into the correct connector on the x710 Card?

from your post I suspect you have HDD's as OSD'S ? No SSD caching? CEPH is very latency sensitive. A setup with HDD's only may have a very good bandwith, but it is bad in terms of latency, which will kill you in the lxc i/O patterns. SSD's will be definitly faster, but to get decent results...

Are you sure that you are looking for the correct ethernet link? enp8s0f0 is usually the onboard adapter, i would expect something like ens? Compare the businfo in "ethtool -i" with lspci" "ip link show" will show you all the available links.