 Home |
Products |
Support |
Community |
News |
xen-api
Re: [Xen-API] How snapshot work on LVMoISCS SR
| To: | Anthony Xu <anthony@xxxxxxxxx>, Ian Pratt <Ian.Pratt@xxxxxxxxxxxxx>, Dave.Scott@xxxxxxxxxxxxx, Julian Chesterfield <Julian.Chesterfield@xxxxxxxxxxxxx>, "xen-api@xxxxxxxxxxxxxxxxxxx" <xen-api@xxxxxxxxxxxxxxxxxxx> |
|---|---|
| Subject: | Re: [Xen-API] How snapshot work on LVMoISCS SR |
| From: | Ian Blenke <ian@xxxxxxxxxx> |
| Date: | Tue, 26 Jan 2010 17:37:51 -0500 |
| Cc: | |
| Delivery-date: | Tue, 26 Jan 2010 14:37:46 -0800 |
| Dkim-signature: | v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=gamma; h=domainkey-signature:mime-version:sender:received:in-reply-to :references:date:x-google-sender-auth:message-id:subject:from:to :content-type; bh=YpJWCFI7J8mCmZfSs46SARljAXY1zefGUxX/1sCsC8o=; b=Hde19ffwa0sJ3XpFYn3D9ZOuQkCplIZjLJmymFrxEmMWCZQGYtgEziZYMAcvoFPNJh negrD1DhgDlq2otKZz28u5G1000mYIvPu2dp6mD6esKxIP5XVfsM/dgLM/zb6mie2HF4 nElVT3G5pLo/H9cjBZrE+2FfXuK5e0KNkFrtk= |
| Domainkey-signature: | a=rsa-sha1; c=nofws; d=gmail.com; s=gamma; h=mime-version:sender:in-reply-to:references:date :x-google-sender-auth:message-id:subject:from:to:content-type; b=bKNAaWXK9ql+KcigbFOBt9BfOfVx92ZXynnPqnmcKT97Zg7EvMV0MgkOl5Pnp212eU LaKQkncFDZiqm3zDSge3HflioQNxDVB+EdA4fSflhk43PHqIHesbF/ieCJU7Vb79LgPi zsMF/dh+6gDXC+Gt/gZqurvQxj3ifFxuV7Qeo= |
| Envelope-to: | www-data@xxxxxxxxxxxxxxxxxxx |
| In-reply-to: | <1264544315.29805.2054.camel@xxxxxxxxxxxxxxxxxxxxxxx> |
| List-help: | <mailto:xen-api-request@lists.xensource.com?subject=help> |
| List-id: | Discussion of API issues surrounding Xen <xen-api.lists.xensource.com> |
| List-post: | <mailto:xen-api@lists.xensource.com> |
| List-subscribe: | <http://lists.xensource.com/mailman/listinfo/xen-api>, <mailto:xen-api-request@lists.xensource.com?subject=subscribe> |
| List-unsubscribe: | <http://lists.xensource.com/mailman/listinfo/xen-api>, <mailto:xen-api-request@lists.xensource.com?subject=unsubscribe> |
| References: | <1264477399.2927.58.camel@mobl-ant> <4B5EC521.5070401@xxxxxxxxxxxxx> <1264536284.2901.103.camel@mobl-ant> <4FA716B1526C7C4DB0375C6DADBC4EA342D83D9BAC@xxxxxxxxxxxxxxxxxxxxxxxxx> <1264543648.2901.109.camel@mobl-ant> <1264544315.29805.2054.camel@xxxxxxxxxxxxxxxxxxxxxxx> |
| Sender: | xen-api-bounces@xxxxxxxxxxxxxxxxxxx |
On Tue, Jan 26, 2010 at 5:18 PM, Daniel Stodden <daniel.stodden@xxxxxxxxxx> wrote: > On Tue, 2010-01-26 at 17:07 -0500, Anthony Xu wrote: >> The other thing I'd like to do is how XCP handle disk cache inside VM >> when creating a snapshot? I saw from Xencenter seem the VM is stopped >> temporarily when creating a snapshot. >> >> Does VM flush dirty disk cache when creating snapshot? > > Depends what you mean by disk caches. All I/O performed by the backend > non-buffered, so there's presently no need to flush. As soon as a guest > I/O request is processed, it essentially goes directly to the disk. If you're asking whether the VM is advised to quiesce its filesystem by the frontend driver device being snapshotted on the backing store, I believe the answer to that question is "no". Please correct me if I'm wrong. - Ian Blenke <ian@xxxxxxxxxx> _______________________________________________ xen-api mailing list xen-api@xxxxxxxxxxxxxxxxxxx http://lists.xensource.com/mailman/listinfo/xen-api |
| <Prev in Thread] | Current Thread | [Next in Thread> |
|---|---|---|
| ||
| Previous by Date: | RE: [Xen-API] How snapshot work on LVMoISCS SR, Anthony Xu |
|---|---|
| Next by Date: | RE: [Xen-API] How snapshot work on LVMoISCS SR, Daniel Stodden |
| Previous by Thread: | Re: [Xen-API] How snapshot work on LVMoISCS SR, Anthony Xu |
| Next by Thread: | Re: [Xen-API] How snapshot work on LVMoISCS SR, Julian Chesterfield |
| Indexes: | [Date] [Thread] [Top] [All Lists] |
