IO speed or network speed restricting ?

[powersupport]

Hi,

bwlimit: 100000 KBPS
"/etc/vzdump.conf"

May I know if this configuration restricts IO speed or the network speed or both, Also, do we need to make any changes after modifying this conf file like reboot the node etc.

Do we need to modify the same in all the cluster nodes ?

Our situation is we have Proxmox cluster with more than node, and the public bandwidth limit is 1 GB, when running backup with Proxmox backup server, the limit reaching servers hangs, so we would like to know if the backup bandwidth usage can be managed with this configuration

Thank you

 

[shrdlicka]

Hi,

vzdump.conf should be read for every vzdump call. In the documentation for vzdump (https://pve.proxmox.com/pve-docs/vzdump.1.html) you can find that it limits the IO Bandwidth:

...
bwlimit: <integer> (0 - N) (default =0)
Limit I/O bandwidth (KBytes per second).
...

To me, it looks like you would need to modify this on all nodes in the cluster separately.

Hope this helps .

 

[powersupport]

Hi,

vzdump.conf should be read for every vzdump call. In the documentation for vzdump (https://pve.proxmox.com/pve-docs/vzdump.1.html) you can find that it limits the IO Bandwidth:

To me, it looks like you would need to modify this on all nodes in the cluster separately.

Hope this helps .

So, IO Bandwidth restricts IO bandwidth speed not the network, right?

Thank you

 

[shrdlicka]

That's how I would interpret it