Hi Everyone,
As Proxmox VE has grown quite substantially since I began using it, I thought I'd blend together my Wikipedia editing with my in-depth knowledge of the software and my general awareness of the company behind it. Having received the...
Im going to take the weekend to check some of this out and digest it a bit.
So far since the GUI crashes I haven't touched my storage at all and we've been 100% stable which is great though I am at a point where I need to either adjust or create...
Hi Huganega,
Ok, that 128/128 result is probably the most interesting thing you've found yet. The fact that the active SCSI path reaches exactly 128 outstanding requests, stops completing them for 12-14 seconds, and then sdk_ioerr_cnt increases...
Thanks for the links. I have looked into both of them in more detail now.
The fleecing patch is interesting because it demonstrates that a QEMU block-drain condition can indeed leave guest I/O stuck if the drained section is not terminated...
Hey Frankz,
Realtek cards "work" on most Linux hosts, but server admins don't trust them due to well-earned stigma. NICs are very affordable, I have a pile of them. But an I340-T4 for under $40 CAD or PRO/1000 4 Port for the same price will be...
Hey NoriCopperBrand,
Good news, nothing wrong with your equipment! In other news, you are in for some pleasant learning. First major thing: Do not run these commands on every PVE node:
rescan-scsi-bus.sh
multipathd resize map mpathX
pvresize...
Virtual machine support is better classified first by CPU architecture rather than by the guest OS itself. At this point, the relevant architectures are x86 and ARM.
The next question is whether the guest OS supports the virtual hardware...
Hi Frankz,
Ok, now I understand, thank you. Yes, in studying those CPUs, I can see clearly that three of them would offer you a substantial upgrade:
Host CPUCores / threadsTurboTDPPassMark CPU MarkSingle-thread bench
i7-97008 /84.7 GHz65...
If you want to repair the original installation, I would first inspect the old disk from the new Proxmox install before making any changes.
For example, check whether the old root filesystem, /boot, and VM configuration files are still present...
Hi Frankz,
Wow what a mishmash of random computers you have. I don't quite understand your problem, however. What is it you're looking for someone to advise you on? The storage, the CPU specs? If it's a laboratory, the best thing is to...
In the past, we did the same, but with thick-LVM of all storage space and use the ZFS-over-iSCSI appliance for all stuff, that needs a snapshot. We migrated the VM online to the other storage, did the intended stuff and migrate it back.
IIRC...
Hey NoriCopperBrand,
Sounds like a storage slow down to me. Something is unhappy about the rescan as you point out. When PVE shows a question mark on a storage device it means it has lost contact with it- or more specifically pvestatd is unable...
Most likely something network related or storage related. If it's shared storage, then you're just migrating RAM while a VM is running. If it's an LXC or the VM is off, hardly anything is actually moved so something to do with the locking on the...
Thanks, this was very useful.
I have now captured another NOP timeout with both the rolling PCAP and an extended 1-second host-side logger, and some of your questions can now be answered more precisely.
The advertised Linux TCP receive window...
Hey H@rald,
Community members have shared scripts in the past, so unless a policy change has occurred, I'm sure you'd be welcome to link to a GitHub repository or something similar. I suspect that as China is moving away from the likes of...
Hi Everyone,
I think I may have come across a bug? When configuring MTU on PVE, whether the GUI or CLI is synonymous, I checked both and MTU was setup to 1450, it doesn't actually apply to an LXC in the latest PVE- actually I am moments from...
Hmm well there goes my PAUSE frames storm hypothesis. There was no corresponding jump in link_xoff_rx.nic, no CRC errors, no drops, no E810 reset and no physical link loss. So I was wrong... But that narrowing TCP window is TCP-layer...
Had a similar experience when trying to download updates for our cluster in China.
I ended up singeling out the IP address for the Proxmox CDN in Singapore and added that IP address to the /etc/hosts file. (each host)
I basically pinned the...
Hi Everyone, Hey PVE Staff,
Is it just me, or are the web servers for download.proxmox.com unbelievably slow? I'm updating a PBS instance after several months and realizing it will take hours.... This is naturally, inconveniently interfering...