[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index] [Xen-devel] COW in Xen
Hello, I had posted this question in Xen-user mailing list three days ago and I did not get a single answer. On a second thought, maybe xen-devel is more appropriate so I am trying again in the hope that I will receive an answer: Does anybody have an experience (good or bad) with using COW (Copy-On-Write) storage in Xen ? I saw that there is a (rather small) wiki page about it : http://wiki.xensource.com/xenwiki/COWHowTo And also some instructions from Michael Lang for using unionfs for COW for Xen: http://wiki.xensource.com/xenwiki/InstructionsFromMichaelLang My question is : There are some altenatives which are discussed in that wiki page: unionfs, blktap ,using qemu: see http://lxr.xensource.com/lxr/source/tools/blktap/, BenRin's Copy-on-Write md device,Translucency , DmUserspace ,parallax, CowNFS , and LVM snapshots (According to MichaelVrable wiki as I understood it). And BTW- does the XenFS has (or is intended to have) COW support ? What are the pros and cons of these options ? is there a preferred one when using Xen ? Regards, Mark Ryden _______________________________________________ Xen-devel mailing list Xen-devel@xxxxxxxxxxxxxxxxxxx http://lists.xensource.com/xen-devel
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