RE: [Xen-users] disk devices are always /dev/xvdX

["Fan, Huaxiang" <hufan@xxxxxxxxxxxx>]

Thanks Erwan. since all partitions or raw disk on the domu use blkfront driver, I don’t see where the conflict is. Did you mean the domu would use scsi driver for its mapped partitions or disks from dom0?

Thanks,

Huaxiang

 

From: Erwan RENIER [mailto:erwan.renier@xxxxxxxxxxx]
Sent: Thursday, May 12, 2011 9:14 PM
Cc: Fan, Huaxiang; xen-users@xxxxxxxxxxxxxxxxxxx
Subject: Re: [Xen-users] disk devices are always /dev/xvdX

 

As i had time to lose, i tested it and... it works :)
Well at least , it seems to work, the VM launch and i see no errors
be carfull to not use scsi_mod in the same time.

Le 12/05/2011 12:32, Erwan RENIER a écrit :

To change it, I think you can try to change this line in the kernel source : drivers/block/xen-blkfront.c
#define DEV_NAME        "xvd"   /* name in /dev */

But i think there is a good reason to it,
probably to avoid conflicts with the scsi driver,
so i'm waiting for your feedback :)


Le 12/05/2011 06:50, Fan, Huaxiang a écrit :

Hi gurus,

 

The page http://wiki.xensource.com/xenwiki/XenParavirtOps says disk devices on domu are always /dev/xvdX. And I failed when I try to map a raw disk to domu with the name /dev/sdb. The line  ‘phy:sdb,sdb,w’ in domu config file doesn’t take effect. Actually I found a raw disk named /dev/xvdf on the domu.

Anybody got any idea why xen4 put such restriction? How to map to other names such as /dev/sdb on domu?

 

Thanks,

 

HUAXIANG FAN
Software Engineer II

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