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xen-users
RE: [Xen-users] XCP storage repository using VHD on top of the LVM (FC s
Hi,
XCP does use VHD format on top of the LVs it creates on iSCSI/FC
storage. The current problem is that it doesn’t support “thin provisioning” (i.e.
not pre-allocating). It’s great for making snapshots and clones but not so good
for space usage… as you observed!
There is an early prototype of an XCP/vhd storage daemon which has
an LVM implementation optimized for being able to quickly resize volumes. When
that stabilizes, we’ll be able to have thin provisioning. We should put the
development repo for the prototype on xenbits somewhere.
Cheers,
Dave
From:
xen-users-bounces@xxxxxxxxxxxxxxxxxxx [mailto:xen-users-bounces@xxxxxxxxxxxxxxxxxxx]
On Behalf Of Martinx - ?????
Sent: 23 March 2010 20:47
To: Xen List
Subject: [Xen-users] XCP storage repository using VHD on top of the LVM
(FC shared too) instead of the NFS.
Hi!
I thinking why the XCP/XenServer has an option to use the VHD format only
for the NFS Servers... How to use the VHD on top of a local or shared LVM?
I mean, I want to create a logical volume of 500G and within this volume,
I'll create the VHDs files instead LVs for each domU.
And I'll use this setup on top of my FC IBM DS4700 shared storage...
It is possible?! I want the good of both worlds, the space efficient
feature of the VHDs (not pre-allocating) with the speed of the local or fiber
channel storage.
Thanks!
Thiago
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