WARNING - OLD ARCHIVES

This is an archived copy of the Xen.org mailing list, which we have preserved to ensure that existing links to archives are not broken. The live archive, which contains the latest emails, can be found at http://lists.xen.org/
   
 
 
Xen 
 
Home Products Support Community News
 
   
 

xen-devel

[Xen-devel] Poor write performance with physical disk on DomainU freebsd

To: xen-devel@xxxxxxxxxxxxxxxxxxx
Subject: [Xen-devel] Poor write performance with physical disk on DomainU freebsd
From: lepton <ytht.net@xxxxxxxxx>
Date: Sat, 6 Aug 2005 12:24:37 +0800
Delivery-date: Sat, 06 Aug 2005 10:14:09 +0000
Domainkey-signature: a=rsa-sha1; q=dns; c=nofws; s=beta; d=gmail.com; h=received:date:from:to:subject:message-id:mime-version:content-type:content-disposition:user-agent; b=Q/grhhjGBVhHPSUAzFhqHyOv8rOLpD92khd6Y3BIchipQ2Jkl91XpOjHxfwJSXckyB0a+/f/wdzqlDQ+5ri+GFbcx2m4VCc5Wq8yso64EqDuN7dm8aoSyQFenbdfLO7YLdDZ2GeluPOSmbneSGUJq5YNAZETLYmDiqVheE8lBY8=
Envelope-to: www-data@xxxxxxxxxxxxxxxxxxx
List-help: <mailto:xen-devel-request@lists.xensource.com?subject=help>
List-id: Xen developer discussion <xen-devel.lists.xensource.com>
List-post: <mailto:xen-devel@lists.xensource.com>
List-subscribe: <http://lists.xensource.com/cgi-bin/mailman/listinfo/xen-devel>, <mailto:xen-devel-request@lists.xensource.com?subject=subscribe>
List-unsubscribe: <http://lists.xensource.com/cgi-bin/mailman/listinfo/xen-devel>, <mailto:xen-devel-request@lists.xensource.com?subject=unsubscribe>
Sender: xen-devel-bounces@xxxxxxxxxxxxxxxxxxx
User-agent: Mutt/1.5.9i
I get freebsd xen port from http://www.fsmware.com/xenofreebsd/5.3/

After I get it to work, I think using a loop file is slow. So I decided to
move all files to a physical disk.
I changed my xen configuration file, add a 'phys:hda2,hda2,w' in my
disks configration.

then in freebsd, I newfs /dev/xbd1, mount it, and use

tar -cvpf- /|(cd /mnt;tar -xf-) to move files from loop device to
physical device.

I found the tar process will block (use ps, I will see it is in 'D'
status) after some work.

I have tried async mount and softupdate, the result is same.
I tried dump and restore too, the result is same.

And the system whil not response to remote ssh login when tar block.
But it will reply to ping.

Is this a known problem to freebsd on xen?

_______________________________________________
Xen-devel mailing list
Xen-devel@xxxxxxxxxxxxxxxxxxx
http://lists.xensource.com/xen-devel

<Prev in Thread] Current Thread [Next in Thread>