Thanks udo, that's more like it.
Moving PVE off that disk array and allowing another span/pair for the VMs added ~100 MB/s read speed from the previous 2x2 configuration, which in part yielded this:
BUFFERED READS: 206.95 MB/sec
AVERAGE SEEK TIME: 9.20 ms
FSYNCS/SECOND: 2544.88New Test...
PVE's up & running with pve-root on the Kingston E-series SATA II SSD now.
The RAID controller is now freed up to do >2TB LVM and now there are +2 HDD on the RAID10 (2 x 2 x 2).
The SSD is a little slower reading than when pve-root was on 2 x 2 RAID10, even with the much higher seek times, oh...
No- should be no problem.
When I had problems with packages that should have been available having no candidate to install, it too made no sense.
Nevertheless, adding an additional mirror from a neighboring country to sources.list resolved the issue.
I'm reading up on my NICs, and see that they support some interesting virtualization-centric features.
I'd like to know if PVE makes use of components which support these features.
SR-IOV: Virtualized PCI functions
VMDq: Per-guest/vlan hardware queueing
Does anyone have experience with any...
I think it's an awkward feeling going from a more traditional filesystem-based path structure- where it's possible to browse the contents via GUI like Filezilla for example, to a LVM group storage where the contents are more-less 'hidden' to someone not knowing how to browse the contents of...
I did, and it didn't help.
The sections where any disk ordering is mentioned is part of the boot section.
The boot menu includes an sub-entry where it can be defined either "Virtual Disk" (RAID Controller), or "SATA Device" that it boots from.
Then the entry right under that, which is the second...
I wanted to do a similar configuration to acheive wider RAID10 spanning for the data partition(s), and it didn't work.
On my RAID controller, it doesn't allow slicing RAID10 disk sizes, and to have >2 pair span I end up with >2TB & PVE doesn't install.
So I tried installing PVE to a fast...
There are quite a few tools to help to do this, but what I've found is even when they do work there's sometimes an issue of the USB drive the OS is installed from, once removed, ends up creating an offset in your disk naming (ie. sda, sdb, sdc, etc.), and the installation doesn't boot anyhow...
Whichever method you choose, I imagine disk I/O will be a concern.
In the event you choose KVM over OpenVZ, you can still provide your VM with direct access to the disk(s), as described here.
I've seen similar issues not with PVE in particular, but while installing various linuxes onto disks which contain either LVM2 or software RAID metadata residue from previous installations.
In every case zeroing the affected disk(s) using dd from the 'Disk Erase' tool on the PartedMagic LiveCD...
I think it's worth-while, for access to the KSM feature.
Relatively few issues are being reported with it AFAIK, and what does get reported seems to receive appropriate attention from the devs and is resolved.
Of course there's always the option to boot into another branch if need be- they...
I noticed that I/O 'felt' a little worse now on the 2.6.35 than quite some time ago with the 2.6.32 branch.
It's discussed briefly in this thread.
I don't have records or data from back then to support my 'hunch', so I ran a couple basic tests using the pveperf command to compare the 3 branches...
I just gave it a shot and got this in return:
Bascule:~# vzcpucheck
cat: /proc/fairsched: No such file or directory
Maybe it's because of the 2.6.35 branch, I'm not sure.
By default Proxmox relies on the kernel's 'fair scheduling' function to distribute energy between VMs.
You'll see a setting under the "Options" tab in a KVM machine's confguration section called "CPU Units".
This adjusts the relative importance of that machine compared to the others running on...
Apparently something's amiss causing an intermittent problem.
3 days later now & the scheduled backup is once again an issue.
This time rather instead of logging a start then disappearing off the radar, there's no sign of even a start. (???)
There should be a backup job starting here, instead...
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