Very slow cloning VM (file-system RAID0)

cdarsac

New Member
May 28, 2021
22
4
3
57
Toulouse (in France)
Hi,

I run into problèmes when I clone a VM into the file-system of my HP Proliant Server.
It took a very long time (about 48 mn)

The transfert rapidely goes to 100% (took about 4 mn), then nothing happens during a very long time.

1623991213788.png

During this time, Proxmox even stops displaying "utilisation CPU" and so on.
1623991760916.png


Ex: The cloning of a VM of 32Go from a HDD-Usb to the file-system Raid0 of the hôte is during 48 minutes.
I think it's very slow.

Alternatively, the reversely cloning of the same VM (from file-system Raid0 of the hôte to the HDD-Usb) is during 43 seconds.
It's good.

I don't understand this great difference!


From HDD to file-system, the transfert rapidely goes to 100% (took about 4 mn), then nothing happens during a very long time.

1623991213788.png

During this time, Proxmox even stops displaying "utilisation CPU" and so on.
1623991760916.png

During cloning:
  • CPU Usage: about 0.10%
  • IO Delay: 3.20 %
  • Load average: about 2.00
  • RAM usage: about 3.5%

File-system:
- RAID0 with 7 disques SAS 2.5'' 10krpm, 660 Go (NETAPP X422A-R5)
- controleur RAID: P420i, with no "RAM module"
- Server HP Proliant DL360P G8 ( https://www.serveur-occasion.com/fr...-x-xeon-eight-core-e5-2650-64-go-rack-1u.html )
CPU(s)

32 x Intel(R) Xeon(R) CPU E5-2650 0 @ 2.00GHz (2 Sockets)
Kernel Version

Linux 5.4.106-1-pve #1 SMP PVE 5.4.106-1 (Fri, 19 Mar 2021 11:08:47 +0100)
PVE Manager Version

pve-manager/6.4-4/337d6701





Would you like some others informations to help me ?

Best regards,
 
Last edited:

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