[Users] Problem with Load with Servers Connected to a SAN

Martin Maurer martin at proxmox.com
Thu May 26 08:19:32 EDT 2011


Hi,

I would just benchmark the filesystem (/vz or var/lib/vz) - is this running as expected?
Br, Martin

> -----Original Message-----
> From: users-bounces at openvz.org [mailto:users-bounces at openvz.org] On
> Behalf Of Mark Johanson
> Sent: Mittwoch, 25. Mai 2011 21:08
> To: users at openvz.org
> Subject: [Users] Problem with Load with Servers Connected to a SAN
> 
> Having troubles getting a problem diagnosed with load issues during VPS
> creations. The template that causes the issues is a cPanel template that is 2G in
> size (not my choice in the template size it is how management wants the VPS
> ready to go with minimal config change so cPanel is pre-installed rather then
> installing after the VPS is created).
> 
> When the VPS creates it causes a extreme amount of load (ie upwards of
> 120-300) until it finishes with the untaring of the template. We are running out
> of ideas on things to check for possible causes behind the load, or even if it
> might just be OpenVZ running VPS's on a SAN. I've included the server and SAN
> information below. I can provide other information as well (not sure what all
> you might need for information and didn't want to make an overloading
> message.
> 
> We have tried two different kernels to see if it might be kernel related, but
> (while still not ruled out) does not seem to be the cause unless it happens to be
> a issue in both kernels we have tried.
> 
> Any assistance would be great.
> 
> Sever 1:
> MOTHERBOARD VENDOR: Supermicro
> MOTHERBOARD MODEL: X8DTL
> CPU: (2 x physical) (16 x logical)  Intel(R) Xeon(R) CPU E5620 @ 2.40GHz
> RAM:  16427432 kB
> Linux server 2.6.32-feoktistov.1 #1 SMP Fri Mar 4 19:19:45 MSK 2011
> x86_64 x86_64 x86_64 GNU/Linux
> vzctl version 3.0.26.2
> 
> Server 2:
> MOTHERBOARD VENDOR: Supermicro
> MOTHERBOARD MODEL: X8DTL
> CPU: (2 x physical) (16 x logical)  Intel(R) Xeon(R) CPU E5620 @ 2.40GHz
> RAM:  16427452 kB
> Linux server vmlinuz-2.6.18-238.9.1.el5.028stab089.1  #1 SMP Fri Mar 4
> 19:19:45 MSK 2011 x86_64 x86_64 x86_64 GNU/Linux vzctl version 3.0.26.3
> 
> San Information:
> FreeBSD 8.2-RELEASE
> ZFS v15
> istgt iSCSI target
> RAID50 7 RAID5's in the RAID0
> 21 drives
> 
> 
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