[PVE-User] VM issue when Backup over NAS,

[Muhammad Yousuf Khan]

Thanks Martin. i'll follow your suggestion in future.


On Wed, Jun 15, 2011 at 9:56 PM, Martin Maurer <martin at proxmox.com> wrote:

>  As far as I remember it´s the percentage of time that the CPU was idle
> during which the system had an outstanding disk I/O request.
>
>
>
> So if it is high, your disk subsystem is too slow => use faster disks with
> a hardware raid controller to get it better.
>
>
>
> Martin
>
>
>
>
>
> *From:* Muhammad Yousuf Khan [mailto:sirtcp at gmail.com]
> *Sent:* Mittwoch, 15. Juni 2011 18:08
>
> *To:* Martin Maurer
> *Cc:* pve-user at pve.proxmox.com
> *Subject:* Re: [PVE-User] VM issue when Backup over NAS,
>
>
>
> ok Thanks Martin it is resolved. initially IOdelay shoots to 60 precent but
> gradually it decreases and in a mint or two it reaches 20%  and things got
> fine. Thank anyways. can you please tell me one more thing what is this IO
> delay . it is a IO of HD ,Processor or LAN card or mixture of all together ?
>
>
>
> Thanks
>
>
>
> Myk
>
>
>
>
>
>
>
> On Wed, Jun 15, 2011 at 3:03 PM, Muhammad Yousuf Khan <sirtcp at gmail.com>
> wrote:
>
> ok ill do that an will let you know the update.
>
>
>
>
>
>
>
> On Wed, Jun 15, 2011 at 1:09 PM, Martin Maurer <martin at proxmox.com> wrote:
>
> Based on your hardware the performance is as low as expected. You can limit
> the speed of vzdump.
>
>
>
> Create the /etc/vzdump.conf file with the following content:
>
>
>
> bwlimit: 5000
>
>
>
> for details, see ‘man vzdump’
>
>
>
> Martin
>
>
>
> *From:* Muhammad Yousuf Khan [mailto:sirtcp at gmail.com]
> *Sent:* Dienstag, 14. Juni 2011 17:31
>
>
> *To:* Martin Maurer
> *Cc:* pve-user at pve.proxmox.com
> *Subject:* Re: [PVE-User] VM issue when Backup over NAS,
>
>
>
> Just FYI
>
> the IOdelay problem is only with the machine that i terminated the
> vzdump(backup job) during the test backup. other seems to b working fine.
>
>
>
> Tthanks
>
>
>
>
>
>
>
> On Tue, Jun 14, 2011 at 8:21 PM, Muhammad Yousuf Khan <sirtcp at gmail.com>
> wrote:
>
>
>
> Proxmox
>
> Openfiler
>
> Processors
>
> 2.66 Quad Core
>
> P4 3.0 Server board
>
> LAN
>
> 8GB
>
> 4GB
>
> HD
>
> 1TB
>
> 250 GB
>
> RAID
>
> No
>
> No
>
> RAM
>
> 1GB
>
> 1GB
>
>
>
>
>
> On Tue, Jun 14, 2011 at 7:56 PM, Martin Maurer <martin at proxmox.com> wrote:
>
> Pls provide all information about your boxes like requested below.
>
> Martin
>
>
>
> *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
>
> REGEX/SECOND:      521349
>
> HD SIZE:           94.49 GB (/dev/mapper/pve-root)
>
> BUFFERED READS:    25.19 MB/sec
>
> AVERAGE SEEK TIME: 32.31 ms
>
> FSYNCS/SECOND:     3.24
>
> 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> 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).
>
>
>
> Martin
>
>
>
> *From:* 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
> *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)
>
> RAM :4gb
>
>
>
> 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
>
> any help?
>
>
>
>
>
> Thanks you
>
> MYK
>
>
> _______________________________________________
> pve-user mailing list
> pve-user at pve.proxmox.com
> http://pve.proxmox.com/cgi-bin/mailman/listinfo/pve-user
>
>
>
>
> _______________________________________________
> pve-user mailing list
> pve-user at pve.proxmox.com
> http://pve.proxmox.com/cgi-bin/mailman/listinfo/pve-user
>
>
>
>
>
>
> _______________________________________________
> pve-user mailing list
> pve-user at pve.proxmox.com
> http://pve.proxmox.com/cgi-bin/mailman/listinfo/pve-user
>
>
>
>
>
> _______________________________________________
> pve-user mailing list
> pve-user at pve.proxmox.com
> http://pve.proxmox.com/cgi-bin/mailman/listinfo/pve-user
>
>
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.proxmox.com/pipermail/pve-user/attachments/20110616/5d2bd365/attachment.htm>