Open Stack

On Tue, Nov 11, 2014 at 01:59:12PM +0800, Chen CH Ji wrote:
> 
> see the error value of diagnostics is huge , but I don't think my disk is
> that bad ... is this wrong info or wrong usage of libvirt?
> Also, all the disk has same error number curious me , any guide ?

Considering you are using libvirt/KVM, libvirt asks qemu to get
information about block stats.

You can begin by executing the command from libvirt and compare the
result.

  virsh domstats <domain>

If results are equivalent we can probably avoid that the problem comes
from Nova.

Also you could connect yourself to the VM or using libguestfs to
execute some commands and get information about errors.

s.

> jichen at cloudcontroller:/opt/stack/nova/nova$ nova diagnostics jieph1
> +---------------------------+----------------------+
> | Property                  | Value                |
> +---------------------------+----------------------+
> | cpu0_time                 | 10710000000          |
> | hdd_errors                | 18446744073709551615 |
> .......................
> | tapf1ce9c02-01_tx_packets | 24                   |
> | vda_errors                | 18446744073709551615 |
> | vda_read                  | 2848768              |
> | vda_read_req              | 453                  |
> | vda_write                 | 348160               |
> | vda_write_req             | 105                  |
> | vdb_errors                | 18446744073709551615 |
> | vdb_read                  | 829440               |
> | vdb_read_req              | 30                   |
> | vdb_write                 | 4096                 |
> 
> Best Regards!
> 
> Kevin (Chen) Ji 纪 晨
> 
> Engineer, zVM Development, CSTL
> Notes: Chen CH Ji/China/IBM at IBMCN   Internet: jichenjc at cn.ibm.com
> Phone: +86-10-82454158
> Address: 3/F Ring Building, ZhongGuanCun Software Park, Haidian District,
> Beijing 100193, PRC

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