[PVE-User] VM issue when Backup over NAS,
martin at proxmox.com
Tue Jun 14 16:56:28 CEST 2011
Pls provide all information about your boxes like requested below.
From: Muhammad Yousuf Khan [mailto:sirtcp at gmail.com]
Sent: Dienstag, 14. Juni 2011 16:25
To: Martin Maurer
Cc: pve-user at pve.proxmox.com
Subject: Re: [PVE-User] VM issue when Backup over NAS,
here you go
CPU BOGOMIPS: 21332.18
HD SIZE: 94.49 GB (/dev/mapper/pve-root)
BUFFERED READS: 25.19 MB/sec
AVERAGE SEEK TIME: 32.31 ms
DNS EXT: 303.86 ms
DNS INT: 320.81 ms (com)
please tell me what is the ideal approach for controlling the IO delay , ISCSI or local Storage.
right now IO delay is b/w 35 to 50 percent. how can i see the per VM IO so i can manually check what is going on inside rather checking every single VM one by one
On Tue, Jun 14, 2011 at 6:30 PM, Martin Maurer <martin at proxmox.com<mailto:martin at proxmox.com>> wrote:
Looks like your storage/network is overloaded. Try reducing the vzdump bandwith (see 'man vzdump').
Also post the output of 'pveperf' from your Proxmox VE host and give details about the used storage/raid hardware (Proxmox VE host and Openfiler).
From: pve-user-bounces at pve.proxmox.com<mailto:pve-user-bounces at pve.proxmox.com> [mailto:pve-user-bounces at pve.proxmox.com<mailto:pve-user-bounces at pve.proxmox.com>] On Behalf Of Muhammad Yousuf Khan
Sent: Dienstag, 14. Juni 2011 13:49
To: pve-user at pve.proxmox.com<mailto:pve-user at pve.proxmox.com>
Subject: [PVE-User] VM issue when Backup over NAS,
Openfiler : 2.99
NAS LAN : 1GB (through put is 25% i don't know why, at least acceptable)
Proxmox : 1.8
Quadcore : 2.66
Ram : 8GB
Proxmox LAN : 1G
I am using Openfiler as a NAS box. and using NFS and ISCSI both as a storage medium. but i have noticed one thing when i backup a VM on NFS and also copy a huge file inside Running VM which is hosted on ISCSI on same openfiler box. My VM get stuck. i can move the copy window in running VM but can not close task bar or copy window. until the backup task of a VM gets finishes then copy inside VM continue and VM gets usable.
how can i over come that issue. for instance if i run backup backup of my data which is inside VM it will again HANG and thing may unavailable to users during backup which is not an option
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