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Re: [PLUG] Need Troubleshooting Advice: Disk Errors in Virtual Machines
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- From: Doug Stewart <zamoose@gmail.com>
- To: Philadelphia Linux User's Group Discussion List <plug@lists.phillylinux.org>
- Subject: Re: [PLUG] Need Troubleshooting Advice: Disk Errors in Virtual Machines
- Date: Tue, 21 Sep 2010 21:53:36 -0400
- Cc: Philadelphia Linux User's Group Discussion List <plug@lists.phillylinux.org>
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Do you have entries from /var/log/messages from either the host or the VMs from around the time of the crashes? Are you seeing actual IOerror entries?
--
Doug Stewart
On Sep 21, 2010, at 8:00 PM, Casey Bralla <MailList@nerdworld.org> wrote:
> On Tuesday 21 September 2010 7:25:26 pm Lee Marzke wrote:
>> On 09/21/2010 06:04 PM, Casey Bralla wrote:
>>> I've got a weird problem which I hope somebody here can help me figure
>>> out.
>>>
>>> I'm running about a dozen virtual machines (mostly web servers) on a
>>> triple- core AMD system running Debian Lenny (ie: "Stable"). Each of
>>> the virtual machines is also running Debian Lenny.
>>>
>>> I am having repeated disk errors on the Virtual Machines, but no disk
>>> errors on the host machine. These disk errors often cause a Kernel
>>> Panic within the VM, or otherwise crash the web server on the VM.
>
>>
>> What are the specs on the host, memory, number/type of disks, vmware
>> server version
>> amount of RAM allocated to VM's and amount left over for the host.
>
>
>
> Host Specs:
>
> AMD Phenom Triple Core 2.4 GHz
> ASRock Motherboad with AMD RS870L chipset
> 4 GBytes G.Skill RAM (2 DIMMS)
>
> Debian Lenny
> VMware Server 2.0.2 Build 203138
>
>
> free reports:
> total used free shared buffers cached
> Mem: 3935036 3902036 33000 0 154324 2704932
> -/+ buffers/cache: 1042780 2892256
> Swap: 11807732 748 11806984
>
> df -h reports:
> Filesystem Size Used Avail Use% Mounted on
> /dev/sda1 576G 184G 363G 34% /
> tmpfs 1.9G 0 1.9G 0% /lib/init/rw
> udev 10M 748K 9.3M 8% /dev
> tmpfs 1.9G 0 1.9G 0% /dev/shm
>
>
>
> Most VM's given 64 MBytes RAM and 3 GByte SATA disks (which are fully
> allocated when they are created)
>
> Here's a mem and free from within a "typical" VM:
>
> total used free shared buffers cached
> Mem: 61480 58980 2500 0 26456 12560
> -/+ buffers/cache: 19964 41516
> Swap: 176672 540 176132
>
>
> Filesystem Size Used Avail Use% Mounted on
> /dev/sda1 2.8G 676M 2.0G 25% /
> tmpfs 31M 0 31M 0% /lib/init/rw
> udev 10M 600K 9.5M 6% /dev
> tmpfs 31M 0 31M 0% /dev/shm
>
>
>
> --
>
> Casey Bralla
> Chief Nerd in Residence
> The NerdWorld Organisation
> http://www.NerdWorld.org
> ___________________________________________________________________________
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___________________________________________________________________________
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