 Home |
Products |
Support |
Community |
News |
xen-users
Re: [Xen-users] Hot Copy file based VMs
| To: | Javier Guerra <javier@xxxxxxxxxxx> |
|---|---|
| Subject: | Re: [Xen-users] Hot Copy file based VMs |
| From: | Jan Kalcic <jandot@xxxxxxxxxxxxxx> |
| Date: | Thu, 19 Mar 2009 16:20:57 +0100 |
| Cc: | Jan Kalcic <jandot@xxxxxxxxxxxxxx>, xen-users@xxxxxxxxxxxxxxxxxxx |
| Delivery-date: | Thu, 19 Mar 2009 08:21:43 -0700 |
| Dkim-signature: | v=1; a=rsa-sha256; c=relaxed/relaxed; d=googlemail.com; s=gamma; h=domainkey-signature:received:received:message-id:date:from :user-agent:mime-version:to:cc:subject:references:in-reply-to :content-type:content-transfer-encoding; bh=ZD2y5HkVs7ctytauOlcBGPAQ5mKJzqD6/c9dN/x72FU=; b=ssdxrBDIQ1DFvmtaukmOkECNfWagDDVRaMXsXoMoids+IrHK4UzD56cf02L/oetXCp VrP/klmcHNNaQExQaiecrLwFngF7hRlGaO96SLQ+jtAgw0eApDriZwng5hce6gLbj21D UXQRbknNCrBSiVxR0Q7dXK/oqAUEMBMTSY6bQ= |
| Domainkey-signature: | a=rsa-sha1; c=nofws; d=googlemail.com; s=gamma; h=message-id:date:from:user-agent:mime-version:to:cc:subject :references:in-reply-to:content-type:content-transfer-encoding; b=VCFinfizommWBtbbSbhDmTEf5Pl/eGj1uC4z/kTKRhXqFrmj4O0pE/b6yCIClTHldu Ra71TexlA73ZGUv01Wy9uj9N0sQfcSvL3u2fEErEUTnQgyFcfFvYdUgXUI/owTMwviP9 SSTs7FOpl92L9DVrJmF783YfxoDwYLpxXELDc= |
| Envelope-to: | www-data@xxxxxxxxxxxxxxxxxxx |
| In-reply-to: | <90eb1dc70903180857m3b93e5a3kac9f85ee0cd9c624@xxxxxxxxxxxxxx> |
| 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/mailman/listinfo/xen-users>, <mailto:xen-users-request@lists.xensource.com?subject=subscribe> |
| List-unsubscribe: | <http://lists.xensource.com/mailman/listinfo/xen-users>, <mailto:xen-users-request@lists.xensource.com?subject=unsubscribe> |
| References: | <49C0C1D9.4020505@xxxxxxxxx> <90eb1dc70903180716p29e38044se5d1fec33b199545@xxxxxxxxxxxxxx> <49C1174A.30907@xxxxxxxxx> <90eb1dc70903180857m3b93e5a3kac9f85ee0cd9c624@xxxxxxxxxxxxxx> |
| Sender: | xen-users-bounces@xxxxxxxxxxxxxxxxxxx |
| User-agent: | Thunderbird 2.0.0.19 (Windows/20081209) |
Javier Guerra wrote: On Wed, Mar 18, 2009 at 10:46 AM, Jan Kalcic <jandot@xxxxxxxxxxxxxx> wrote:What do you mean with "atomic" copy?when talking about storage (or data access in general), an operation is 'atomic' from some point of view if it's 'indivisible'. that is, there wasn't any point in time when it was 'halfway done'. LVM snapshots manage this, because it's not a real copy (it's more like a fork, but it works like a copy in most cases), and because it taps the main stream of storage operations. most other kinds of copy can't be really atomic, that's why Fajar tells you to suspend the guest while you do the copy. that way, even if there was a time when the copy was half-done, the guest wasn't really there, so from it's point of view, the copy was atomic. I see. Really thanks, Jan _______________________________________________ Xen-users mailing list Xen-users@xxxxxxxxxxxxxxxxxxx http://lists.xensource.com/xen-users |
| <Prev in Thread] | Current Thread | [Next in Thread> |
|---|---|---|
| ||
| Previous by Date: | Re: [Xen-users] To avoid Bridging, Fajar A. Nugraha |
|---|---|
| Next by Date: | [Xen-users] New DomU on older Dom0, Danilo Godec |
| Previous by Thread: | Re: [Xen-users] Hot Copy file based VMs, Javier Guerra |
| Next by Thread: | Re: [Xen-users] Hot Copy file based VMs, Fajar A. Nugraha |
| Indexes: | [Date] [Thread] [Top] [All Lists] |
