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-users

Re: [Xen-users] Xen on USB Key

To: "Petersson, Mats" <mats.petersson@xxxxxxx>
Subject: Re: [Xen-users] Xen on USB Key
From: Jayesh Salvi <jayeshsalvi@xxxxxxxxx>
Date: Mon, 23 Jan 2006 09:17:06 -0600
Cc: Henning Sprang <henning_sprang@xxxxxxx>, xen-users@xxxxxxxxxxxxxxxxxxx
Delivery-date: Mon, 23 Jan 2006 15:25:39 +0000
Domainkey-signature: a=rsa-sha1; q=dns; c=nofws; s=beta; d=gmail.com; h=received:message-id:date:from:to:subject:cc:in-reply-to:mime-version:content-type:references; b=A5DLwNxmx+FuXYAhyKqdfafIO2d+gPJYmEGb1GOa1BdMNMGpocwXNwUQYMLT3FQtJc196nJl7aGHXjfbYH0YvvNC+QH1I6BHeo8S3TNYiWSCFF9AJMEdJmpbPJjPAc6ylR6/yvO2XXwtotniyf3NXyYRns1JIu63CnFNYjS08f0=
Envelope-to: www-data@xxxxxxxxxxxxxxxxxxx
In-reply-to: <907625E08839C4409CE5768403633E0B0EAB99@xxxxxxxxxxxxxxxxx>
List-help: <mailto:xen-users-request@lists.xensource.com?subject=help>
List-id: Xen user discussion <xen-users.lists.xensource.com>
List-post: <mailto:xen-users@lists.xensource.com>
List-subscribe: <http://lists.xensource.com/cgi-bin/mailman/listinfo/xen-users>, <mailto:xen-users-request@lists.xensource.com?subject=subscribe>
List-unsubscribe: <http://lists.xensource.com/cgi-bin/mailman/listinfo/xen-users>, <mailto:xen-users-request@lists.xensource.com?subject=unsubscribe>
References: <907625E08839C4409CE5768403633E0B0EAB99@xxxxxxxxxxxxxxxxx>
Sender: xen-users-bounces@xxxxxxxxxxxxxxxxxxx
If you do a write every second (to the same place), one million seconds
is about 11 days (277 hours), but it's very unlikely that a clever Flash
File-system would allow you to write to the same area over and over
again, as it's normally remapping sectors when they are written, rather
than doing a erase/write cycle, so it should last a lot longer than
that. [Caching in the OS will also help if you're writing to the same
place].

--
Mats

I think yes, OS is smart reagarding mounted devices (or USB devices I don't know). While working on the USB drives, when I do major copies to USB drive, it takes pretty long time when I unmount that device. I guess, it is at that time when the OS/USB driver does actual I/O. If anyone has some definite info/pointers on this aspect, I will be greatful to know.

Thanks,
Jayesh
_______________________________________________
Xen-users mailing list
Xen-users@xxxxxxxxxxxxxxxxxxx
http://lists.xensource.com/xen-users
<Prev in Thread] Current Thread [Next in Thread>